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authorcvs2svn <>2008-11-19 18:25:20 +0000
committercvs2svn <>2008-11-19 18:25:20 +0000
commitee40f8d491c436074cc576643f9d988b67319e8a (patch)
tree2497a7463a68744ea4f715f0ac57f7798813d92d /newlib/libc/sys/linux/malloc.c
parent7562a08bb4d038699468d4c592a9f856f8e36c48 (diff)
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This commit was manufactured by cvs2svn to create branchmultiprocess-20081120-branchpoint
'multiprocess-20081120-branch'. Sprout from master 2008-11-19 18:25:19 UTC Bob Wilson <bob.wilson@acm.org> 'include/' Cherrypick from cygnus 1999-05-03 07:29:06 UTC Richard Henderson <rth@redhat.com> '19990502 sourceware import': README config/mt-d30v config/mt-netware config/mt-ospace etc/add-log.el etc/add-log.vi etc/configbuild.ein etc/configbuild.fig etc/configbuild.jin etc/configbuild.tin etc/configdev.ein etc/configdev.fig etc/configdev.jin etc/configdev.tin include/aout/hppa.h include/coff/sym.h include/fopen-bin.h include/fopen-same.h include/opcode/tahoe.h makefile.vms Delete: libgloss/ChangeLog libgloss/Makefile.in libgloss/README libgloss/acinclude.m4 libgloss/aclocal.m4 libgloss/arm/Makefile.in libgloss/arm/_exit.c libgloss/arm/_kill.c libgloss/arm/aclocal.m4 libgloss/arm/coff-iq80310.specs libgloss/arm/coff-pid.specs libgloss/arm/coff-rdimon.specs libgloss/arm/coff-rdpmon.specs libgloss/arm/coff-redboot.ld libgloss/arm/coff-redboot.specs libgloss/arm/configure libgloss/arm/configure.in libgloss/arm/crt0.S libgloss/arm/elf-iq80310.specs libgloss/arm/elf-linux.specs libgloss/arm/elf-pid.specs libgloss/arm/elf-rdimon.specs libgloss/arm/elf-rdpmon.specs libgloss/arm/elf-redboot.ld libgloss/arm/elf-redboot.specs libgloss/arm/libcfunc.c libgloss/arm/linux-crt0.c libgloss/arm/linux-syscall.h libgloss/arm/linux-syscalls0.S libgloss/arm/linux-syscalls1.c libgloss/arm/redboot-crt0.S libgloss/arm/redboot-syscalls.c libgloss/arm/swi.h libgloss/arm/syscall.h libgloss/arm/syscalls.c libgloss/arm/trap.S libgloss/bfin/Makefile.in libgloss/bfin/aclocal.m4 libgloss/bfin/basiccrt.S libgloss/bfin/bf522.ld libgloss/bfin/bf523.ld libgloss/bfin/bf524.ld libgloss/bfin/bf525.ld libgloss/bfin/bf526.ld libgloss/bfin/bf527.ld libgloss/bfin/bf531.ld libgloss/bfin/bf532.ld libgloss/bfin/bf533.ld libgloss/bfin/bf534.ld libgloss/bfin/bf536.ld libgloss/bfin/bf537.ld libgloss/bfin/bf538.ld libgloss/bfin/bf539.ld libgloss/bfin/bf542.ld libgloss/bfin/bf544.ld libgloss/bfin/bf547.ld 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libgloss/bfin/include/sys/_adi_platform.h libgloss/bfin/include/sys/anomaly_macros_rtl.h libgloss/bfin/include/sys/excause.h libgloss/bfin/include/sys/exception.h libgloss/bfin/include/sys/mc_typedef.h libgloss/bfin/include/sys/platform.h libgloss/bfin/include/sys/pll.h libgloss/bfin/include/sysreg.h libgloss/bfin/syscalls.c libgloss/close.c libgloss/config/default.mh libgloss/config/default.mt libgloss/config/dos.mh libgloss/config/mips.mt libgloss/config/mn10200.mt libgloss/config/mn10300.mt libgloss/config/ppc.mh libgloss/configure libgloss/configure.in libgloss/cris/Makefile.in libgloss/cris/aclocal.m4 libgloss/cris/configure libgloss/cris/configure.in libgloss/cris/crt0.S libgloss/cris/crti.c libgloss/cris/crtn.c libgloss/cris/gensyscalls libgloss/cris/irqtable.S libgloss/cris/lcrt0.c libgloss/cris/linunistd.h libgloss/cris/outbyte.c libgloss/cris/setup.S libgloss/crx/Makefile.in libgloss/crx/_exit.c libgloss/crx/_getenv.c libgloss/crx/_rename.c libgloss/crx/aclocal.m4 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libgloss/m32c/sample.c libgloss/m32c/sbrk.c libgloss/m32c/stat.S libgloss/m32c/time.S libgloss/m32c/times.S libgloss/m32c/unlink.S libgloss/m32c/utime.S libgloss/m32c/varvects.S libgloss/m32c/varvects.h libgloss/m32c/write.S libgloss/m32r/Makefile.in libgloss/m32r/aclocal.m4 libgloss/m32r/chmod.c libgloss/m32r/close.c libgloss/m32r/configure libgloss/m32r/configure.in libgloss/m32r/crt0.S libgloss/m32r/eit.h libgloss/m32r/eva-stub.ld libgloss/m32r/eva.ld libgloss/m32r/exit.c libgloss/m32r/fstat.c libgloss/m32r/getpid.c libgloss/m32r/isatty.c libgloss/m32r/kill.c libgloss/m32r/lseek.c libgloss/m32r/m32r-lib.c libgloss/m32r/m32r-stub.c libgloss/m32r/mon.specs libgloss/m32r/open.c libgloss/m32r/raise.c libgloss/m32r/read.c libgloss/m32r/sbrk.c libgloss/m32r/stat.c libgloss/m32r/trap0.S libgloss/m32r/trapmon0.c libgloss/m32r/unlink.c libgloss/m32r/utime.c libgloss/m32r/write.c libgloss/m68hc11/Makefile.in libgloss/m68hc11/aclocal.m4 libgloss/m68hc11/configure libgloss/m68hc11/configure.in 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newlib/libc/string/strerror.c newlib/libc/string/strerror_r.c newlib/libc/string/strings.tex newlib/libc/string/strlcat.c newlib/libc/string/strlcpy.c newlib/libc/string/strlen.c newlib/libc/string/strlwr.c newlib/libc/string/strncasecmp.c newlib/libc/string/strncat.c newlib/libc/string/strncmp.c newlib/libc/string/strncpy.c newlib/libc/string/strndup.c newlib/libc/string/strndup_r.c newlib/libc/string/strnlen.c newlib/libc/string/strpbrk.c newlib/libc/string/strrchr.c newlib/libc/string/strsep.c newlib/libc/string/strspn.c newlib/libc/string/strstr.c newlib/libc/string/strtok.c newlib/libc/string/strtok_r.c newlib/libc/string/strupr.c newlib/libc/string/strxfrm.c newlib/libc/string/swab.c newlib/libc/string/u_strerr.c newlib/libc/string/wcpcpy.c newlib/libc/string/wcpncpy.c newlib/libc/string/wcscat.c newlib/libc/string/wcschr.c newlib/libc/string/wcscmp.c newlib/libc/string/wcscoll.c newlib/libc/string/wcscpy.c newlib/libc/string/wcscspn.c newlib/libc/string/wcslcat.c newlib/libc/string/wcslcpy.c newlib/libc/string/wcslen.c newlib/libc/string/wcsncat.c newlib/libc/string/wcsncmp.c newlib/libc/string/wcsncpy.c newlib/libc/string/wcsnlen.c newlib/libc/string/wcspbrk.c newlib/libc/string/wcsrchr.c newlib/libc/string/wcsspn.c newlib/libc/string/wcsstr.c newlib/libc/string/wcstrings.tex newlib/libc/string/wcswidth.c newlib/libc/string/wcsxfrm.c newlib/libc/string/wcwidth.c newlib/libc/string/wmemchr.c newlib/libc/string/wmemcmp.c newlib/libc/string/wmemcpy.c newlib/libc/string/wmemmove.c newlib/libc/string/wmemset.c newlib/libc/sys.tex newlib/libc/sys/Makefile.am newlib/libc/sys/Makefile.in newlib/libc/sys/a29khif/Makefile.am newlib/libc/sys/a29khif/Makefile.in newlib/libc/sys/a29khif/_alloc.S newlib/libc/sys/a29khif/_close.S newlib/libc/sys/a29khif/_cycles.S newlib/libc/sys/a29khif/_exit.S newlib/libc/sys/a29khif/_fstat.S newlib/libc/sys/a29khif/_getpsiz.S newlib/libc/sys/a29khif/_gettz.S newlib/libc/sys/a29khif/_ioctl.S 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newlib/libc/sys/arm/sys/fcntl.h newlib/libc/sys/arm/sys/param.h newlib/libc/sys/arm/syscalls.c newlib/libc/sys/arm/trap.S newlib/libc/sys/configure newlib/libc/sys/configure.in newlib/libc/sys/d10v/Makefile.am newlib/libc/sys/d10v/Makefile.in newlib/libc/sys/d10v/aclocal.m4 newlib/libc/sys/d10v/configure newlib/libc/sys/d10v/configure.in newlib/libc/sys/d10v/creat.c newlib/libc/sys/d10v/crt0.S newlib/libc/sys/d10v/sys/syscall.h newlib/libc/sys/d10v/syscalls.c newlib/libc/sys/d10v/trap.S newlib/libc/sys/decstation/Makefile.am newlib/libc/sys/decstation/Makefile.in newlib/libc/sys/decstation/_main.c newlib/libc/sys/decstation/aclocal.m4 newlib/libc/sys/decstation/configure newlib/libc/sys/decstation/configure.in newlib/libc/sys/decstation/sys/dirent.h newlib/libc/sys/h8300hms/Makefile.am newlib/libc/sys/h8300hms/Makefile.in newlib/libc/sys/h8300hms/_exit.S newlib/libc/sys/h8300hms/aclocal.m4 newlib/libc/sys/h8300hms/close.S newlib/libc/sys/h8300hms/configure newlib/libc/sys/h8300hms/configure.in newlib/libc/sys/h8300hms/crt0.S newlib/libc/sys/h8300hms/crt1.c newlib/libc/sys/h8300hms/fstat.S newlib/libc/sys/h8300hms/lseek.S newlib/libc/sys/h8300hms/misc.c newlib/libc/sys/h8300hms/open.S newlib/libc/sys/h8300hms/read.S newlib/libc/sys/h8300hms/sbrk.c newlib/libc/sys/h8300hms/setarch.h newlib/libc/sys/h8300hms/stat.S newlib/libc/sys/h8300hms/sys/file.h newlib/libc/sys/h8300hms/sys/syscall.h newlib/libc/sys/h8300hms/syscalls.c newlib/libc/sys/h8300hms/write.S newlib/libc/sys/h8500hms/Makefile.am newlib/libc/sys/h8500hms/Makefile.in newlib/libc/sys/h8500hms/aclocal.m4 newlib/libc/sys/h8500hms/configure newlib/libc/sys/h8500hms/configure.in newlib/libc/sys/h8500hms/crt0.c newlib/libc/sys/h8500hms/misc.c newlib/libc/sys/h8500hms/syscalls.c newlib/libc/sys/linux/Makefile.am newlib/libc/sys/linux/Makefile.in newlib/libc/sys/linux/aclocal.m4 newlib/libc/sys/linux/aio.c newlib/libc/sys/linux/aio64.c newlib/libc/sys/linux/argp/Makefile.am newlib/libc/sys/linux/argp/Makefile.in newlib/libc/sys/linux/argp/argp-ba.c newlib/libc/sys/linux/argp/argp-eexst.c newlib/libc/sys/linux/argp/argp-fmtstream.c newlib/libc/sys/linux/argp/argp-fmtstream.h newlib/libc/sys/linux/argp/argp-fs-xinl.c newlib/libc/sys/linux/argp/argp-help.c newlib/libc/sys/linux/argp/argp-namefrob.h newlib/libc/sys/linux/argp/argp-parse.c newlib/libc/sys/linux/argp/argp-pv.c newlib/libc/sys/linux/argp/argp-pvh.c newlib/libc/sys/linux/argp/argp-xinl.c newlib/libc/sys/linux/bits/initspin.h newlib/libc/sys/linux/bits/libc-lock.h newlib/libc/sys/linux/bits/pthreadtypes.h newlib/libc/sys/linux/bits/typesizes.h newlib/libc/sys/linux/bp-checks.h newlib/libc/sys/linux/brk.c newlib/libc/sys/linux/calloc.c newlib/libc/sys/linux/callocr.c newlib/libc/sys/linux/cfreer.c newlib/libc/sys/linux/cfspeed.c newlib/libc/sys/linux/clock_getres.c newlib/libc/sys/linux/clock_gettime.c newlib/libc/sys/linux/clock_settime.c newlib/libc/sys/linux/cmath/Makefile.am newlib/libc/sys/linux/cmath/Makefile.in newlib/libc/sys/linux/cmath/math_private.h newlib/libc/sys/linux/cmath/s_cacos.c newlib/libc/sys/linux/cmath/s_cacosf.c newlib/libc/sys/linux/cmath/s_cacosh.c newlib/libc/sys/linux/cmath/s_cacoshf.c newlib/libc/sys/linux/cmath/s_cacoshl.c newlib/libc/sys/linux/cmath/s_cacosl.c newlib/libc/sys/linux/cmath/s_casin.c newlib/libc/sys/linux/cmath/s_casinf.c newlib/libc/sys/linux/cmath/s_casinh.c newlib/libc/sys/linux/cmath/s_casinhf.c newlib/libc/sys/linux/cmath/s_casinhl.c newlib/libc/sys/linux/cmath/s_casinl.c newlib/libc/sys/linux/cmath/s_catan.c newlib/libc/sys/linux/cmath/s_catanf.c newlib/libc/sys/linux/cmath/s_catanh.c newlib/libc/sys/linux/cmath/s_catanhf.c newlib/libc/sys/linux/cmath/s_catanhl.c newlib/libc/sys/linux/cmath/s_catanl.c newlib/libc/sys/linux/cmath/s_cbrtl.c newlib/libc/sys/linux/cmath/s_ccos.c newlib/libc/sys/linux/cmath/s_ccosf.c newlib/libc/sys/linux/cmath/s_ccosh.c newlib/libc/sys/linux/cmath/s_ccoshf.c newlib/libc/sys/linux/cmath/s_ccoshl.c newlib/libc/sys/linux/cmath/s_ccosl.c newlib/libc/sys/linux/cmath/s_cexp.c newlib/libc/sys/linux/cmath/s_cexpf.c newlib/libc/sys/linux/cmath/s_cexpl.c newlib/libc/sys/linux/cmath/s_clog.c newlib/libc/sys/linux/cmath/s_clog10.c newlib/libc/sys/linux/cmath/s_clog10f.c newlib/libc/sys/linux/cmath/s_clog10l.c newlib/libc/sys/linux/cmath/s_clogf.c newlib/libc/sys/linux/cmath/s_clogl.c newlib/libc/sys/linux/cmath/s_cpow.c newlib/libc/sys/linux/cmath/s_cpowf.c newlib/libc/sys/linux/cmath/s_cpowl.c newlib/libc/sys/linux/cmath/s_cproj.c newlib/libc/sys/linux/cmath/s_cprojf.c newlib/libc/sys/linux/cmath/s_cprojl.c newlib/libc/sys/linux/cmath/s_csin.c newlib/libc/sys/linux/cmath/s_csinf.c newlib/libc/sys/linux/cmath/s_csinh.c newlib/libc/sys/linux/cmath/s_csinhf.c newlib/libc/sys/linux/cmath/s_csinhl.c newlib/libc/sys/linux/cmath/s_csinl.c newlib/libc/sys/linux/cmath/s_csqrt.c newlib/libc/sys/linux/cmath/s_csqrtf.c newlib/libc/sys/linux/cmath/s_csqrtl.c newlib/libc/sys/linux/cmath/s_ctan.c newlib/libc/sys/linux/cmath/s_ctanf.c newlib/libc/sys/linux/cmath/s_ctanh.c newlib/libc/sys/linux/cmath/s_ctanhf.c newlib/libc/sys/linux/cmath/s_ctanhl.c newlib/libc/sys/linux/cmath/s_ctanl.c newlib/libc/sys/linux/config.h newlib/libc/sys/linux/configure newlib/libc/sys/linux/configure.in newlib/libc/sys/linux/confstr.c newlib/libc/sys/linux/confstr.h newlib/libc/sys/linux/crt1.c newlib/libc/sys/linux/ctermid.c newlib/libc/sys/linux/dl/Makefile.am newlib/libc/sys/linux/dl/Makefile.in newlib/libc/sys/linux/dl/abi-tag.h newlib/libc/sys/linux/dl/atomicity.h newlib/libc/sys/linux/dl/dl-addr.c newlib/libc/sys/linux/dl/dl-cache.c newlib/libc/sys/linux/dl/dl-cache.h newlib/libc/sys/linux/dl/dl-close.c newlib/libc/sys/linux/dl/dl-debug.c newlib/libc/sys/linux/dl/dl-deps.c newlib/libc/sys/linux/dl/dl-dst.h newlib/libc/sys/linux/dl/dl-error.c newlib/libc/sys/linux/dl/dl-fini.c newlib/libc/sys/linux/dl/dl-init.c newlib/libc/sys/linux/dl/dl-iteratephdr.c 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newlib/libc/sys/linux/flockfile.c newlib/libc/sys/linux/fpathconf.c newlib/libc/sys/linux/free.c newlib/libc/sys/linux/freer.c newlib/libc/sys/linux/fstab.c newlib/libc/sys/linux/fstatvfs.c newlib/libc/sys/linux/fstatvfs64.c newlib/libc/sys/linux/ftok.c newlib/libc/sys/linux/ftw.c newlib/libc/sys/linux/ftw64.c newlib/libc/sys/linux/funlockfile.c newlib/libc/sys/linux/getdate.c newlib/libc/sys/linux/getdate_err.c newlib/libc/sys/linux/gethostid.c newlib/libc/sys/linux/gethostname.c newlib/libc/sys/linux/getlogin.c newlib/libc/sys/linux/getopt.c newlib/libc/sys/linux/getopt1.c newlib/libc/sys/linux/getpwent.c newlib/libc/sys/linux/getreent.c newlib/libc/sys/linux/getrlimit64.c newlib/libc/sys/linux/getwd.c newlib/libc/sys/linux/hp-timing.h newlib/libc/sys/linux/iconv/Makefile.am newlib/libc/sys/linux/iconv/Makefile.in newlib/libc/sys/linux/iconv/categories.def newlib/libc/sys/linux/iconv/dummy-repertoire.c newlib/libc/sys/linux/iconv/gconv.c newlib/libc/sys/linux/iconv/gconv_builtin.c 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newlib/libc/sys/linux/include/arpa/inet.h newlib/libc/sys/linux/include/arpa/nameser.h newlib/libc/sys/linux/include/arpa/nameser_compat.h newlib/libc/sys/linux/include/arpa/telnet.h newlib/libc/sys/linux/include/arpa/tftp.h newlib/libc/sys/linux/include/bp-sym.h newlib/libc/sys/linux/include/cmathcalls.h newlib/libc/sys/linux/include/complex.h newlib/libc/sys/linux/include/dl-hash.h newlib/libc/sys/linux/include/dlfcn.h newlib/libc/sys/linux/include/fnmatch.h newlib/libc/sys/linux/include/gconv.h newlib/libc/sys/linux/include/getopt.h newlib/libc/sys/linux/include/glob.h newlib/libc/sys/linux/include/hesiod.h newlib/libc/sys/linux/include/iconv.h newlib/libc/sys/linux/include/ifaddrs.h newlib/libc/sys/linux/include/limits.h newlib/libc/sys/linux/include/link.h newlib/libc/sys/linux/include/ltdl.h newlib/libc/sys/linux/include/malloc.h newlib/libc/sys/linux/include/mcheck.h newlib/libc/sys/linux/include/mqueue.h newlib/libc/sys/linux/include/namespace.h newlib/libc/sys/linux/include/net/bpf.h newlib/libc/sys/linux/include/net/bpf_compat.h newlib/libc/sys/linux/include/net/bpfdesc.h newlib/libc/sys/linux/include/net/bridge.h newlib/libc/sys/linux/include/net/ethernet.h newlib/libc/sys/linux/include/net/fddi.h newlib/libc/sys/linux/include/net/if.h newlib/libc/sys/linux/include/net/if_arc.h newlib/libc/sys/linux/include/net/if_arp.h newlib/libc/sys/linux/include/net/if_dl.h newlib/libc/sys/linux/include/net/if_gif.h newlib/libc/sys/linux/include/net/if_ieee80211.h newlib/libc/sys/linux/include/net/if_llc.h newlib/libc/sys/linux/include/net/if_mib.h newlib/libc/sys/linux/include/net/if_ppp.h newlib/libc/sys/linux/include/net/if_slvar.h newlib/libc/sys/linux/include/net/if_sppp.h newlib/libc/sys/linux/include/net/if_stf.h newlib/libc/sys/linux/include/net/if_tap.h newlib/libc/sys/linux/include/net/if_tapvar.h newlib/libc/sys/linux/include/net/if_tun.h newlib/libc/sys/linux/include/net/if_tunvar.h newlib/libc/sys/linux/include/net/if_types.h newlib/libc/sys/linux/include/net/if_var.h newlib/libc/sys/linux/include/net/if_vlan_var.h newlib/libc/sys/linux/include/net/intrq.h newlib/libc/sys/linux/include/net/iso88025.h newlib/libc/sys/linux/include/net/net_osdep.h newlib/libc/sys/linux/include/net/netisr.h newlib/libc/sys/linux/include/net/pfil.h newlib/libc/sys/linux/include/net/pfkeyv2.h newlib/libc/sys/linux/include/net/ppp_comp.h newlib/libc/sys/linux/include/net/ppp_defs.h newlib/libc/sys/linux/include/net/radix.h newlib/libc/sys/linux/include/net/raw_cb.h newlib/libc/sys/linux/include/net/route.h newlib/libc/sys/linux/include/net/slcompress.h newlib/libc/sys/linux/include/net/slip.h newlib/libc/sys/linux/include/net/zlib.h newlib/libc/sys/linux/include/netconfig.h newlib/libc/sys/linux/include/netdb.h newlib/libc/sys/linux/include/netinet/icmp6.h newlib/libc/sys/linux/include/netinet/icmp_var.h newlib/libc/sys/linux/include/netinet/if_ether.h newlib/libc/sys/linux/include/netinet/igmp.h newlib/libc/sys/linux/include/netinet/igmp_var.h newlib/libc/sys/linux/include/netinet/in.h newlib/libc/sys/linux/include/netinet/in_gif.h newlib/libc/sys/linux/include/netinet/in_pcb.h newlib/libc/sys/linux/include/netinet/in_systm.h newlib/libc/sys/linux/include/netinet/in_var.h newlib/libc/sys/linux/include/netinet/ip.h newlib/libc/sys/linux/include/netinet/ip6.h newlib/libc/sys/linux/include/netinet/ip_dummynet.h newlib/libc/sys/linux/include/netinet/ip_ecn.h newlib/libc/sys/linux/include/netinet/ip_encap.h newlib/libc/sys/linux/include/netinet/ip_fw.h newlib/libc/sys/linux/include/netinet/ip_icmp.h newlib/libc/sys/linux/include/netinet/ip_mroute.h newlib/libc/sys/linux/include/netinet/ip_var.h newlib/libc/sys/linux/include/netinet/ipprotosw.h newlib/libc/sys/linux/include/netinet/tcp.h newlib/libc/sys/linux/include/netinet/tcp_debug.h newlib/libc/sys/linux/include/netinet/tcp_fsm.h newlib/libc/sys/linux/include/netinet/tcp_seq.h newlib/libc/sys/linux/include/netinet/tcp_timer.h newlib/libc/sys/linux/include/netinet/tcp_var.h newlib/libc/sys/linux/include/netinet/tcpip.h newlib/libc/sys/linux/include/netinet/udp.h newlib/libc/sys/linux/include/netinet/udp_var.h newlib/libc/sys/linux/include/netinet6/ah.h newlib/libc/sys/linux/include/netinet6/ah6.h newlib/libc/sys/linux/include/netinet6/esp.h newlib/libc/sys/linux/include/netinet6/esp6.h newlib/libc/sys/linux/include/netinet6/esp_rijndael.h newlib/libc/sys/linux/include/netinet6/icmp6.h newlib/libc/sys/linux/include/netinet6/in6.h newlib/libc/sys/linux/include/netinet6/in6_gif.h newlib/libc/sys/linux/include/netinet6/in6_ifattach.h newlib/libc/sys/linux/include/netinet6/in6_pcb.h newlib/libc/sys/linux/include/netinet6/in6_prefix.h newlib/libc/sys/linux/include/netinet6/in6_var.h newlib/libc/sys/linux/include/netinet6/ip6.h newlib/libc/sys/linux/include/netinet6/ip6_ecn.h newlib/libc/sys/linux/include/netinet6/ip6_fw.h newlib/libc/sys/linux/include/netinet6/ip6_mroute.h newlib/libc/sys/linux/include/netinet6/ip6_var.h newlib/libc/sys/linux/include/netinet6/ip6protosw.h newlib/libc/sys/linux/include/netinet6/ipcomp.h newlib/libc/sys/linux/include/netinet6/ipcomp6.h newlib/libc/sys/linux/include/netinet6/ipsec.h newlib/libc/sys/linux/include/netinet6/ipsec6.h newlib/libc/sys/linux/include/netinet6/mld6_var.h newlib/libc/sys/linux/include/netinet6/nd6.h newlib/libc/sys/linux/include/netinet6/pim6.h newlib/libc/sys/linux/include/netinet6/pim6_var.h newlib/libc/sys/linux/include/netinet6/raw_ip6.h newlib/libc/sys/linux/include/netinet6/scope6_var.h newlib/libc/sys/linux/include/netinet6/tcp6_var.h newlib/libc/sys/linux/include/netinet6/udp6_var.h newlib/libc/sys/linux/include/netns/idp.h newlib/libc/sys/linux/include/netns/idp_var.h newlib/libc/sys/linux/include/netns/ns.h newlib/libc/sys/linux/include/netns/ns_error.h newlib/libc/sys/linux/include/netns/ns_if.h newlib/libc/sys/linux/include/netns/ns_pcb.h newlib/libc/sys/linux/include/netns/sp.h newlib/libc/sys/linux/include/netns/spidp.h newlib/libc/sys/linux/include/netns/spp_debug.h newlib/libc/sys/linux/include/netns/spp_timer.h newlib/libc/sys/linux/include/netns/spp_var.h newlib/libc/sys/linux/include/paths.h newlib/libc/sys/linux/include/pthread.h newlib/libc/sys/linux/include/regex.h newlib/libc/sys/linux/include/resolv.h newlib/libc/sys/linux/include/rpc/Makefile newlib/libc/sys/linux/include/rpc/auth.h newlib/libc/sys/linux/include/rpc/auth_des.h newlib/libc/sys/linux/include/rpc/auth_kerb.h newlib/libc/sys/linux/include/rpc/auth_unix.h newlib/libc/sys/linux/include/rpc/clnt.h newlib/libc/sys/linux/include/rpc/clnt_soc.h newlib/libc/sys/linux/include/rpc/clnt_stat.h newlib/libc/sys/linux/include/rpc/des.h newlib/libc/sys/linux/include/rpc/des_crypt.h newlib/libc/sys/linux/include/rpc/nettype.h newlib/libc/sys/linux/include/rpc/pmap_clnt.h newlib/libc/sys/linux/include/rpc/pmap_prot.h newlib/libc/sys/linux/include/rpc/pmap_rmt.h newlib/libc/sys/linux/include/rpc/raw.h newlib/libc/sys/linux/include/rpc/rpc.h newlib/libc/sys/linux/include/rpc/rpc_com.h newlib/libc/sys/linux/include/rpc/rpc_msg.h newlib/libc/sys/linux/include/rpc/rpcb_clnt.h newlib/libc/sys/linux/include/rpc/rpcb_prot.h newlib/libc/sys/linux/include/rpc/rpcb_prot.x newlib/libc/sys/linux/include/rpc/rpcent.h newlib/libc/sys/linux/include/rpc/svc.h newlib/libc/sys/linux/include/rpc/svc_auth.h newlib/libc/sys/linux/include/rpc/svc_dg.h newlib/libc/sys/linux/include/rpc/svc_soc.h newlib/libc/sys/linux/include/rpc/types.h newlib/libc/sys/linux/include/rpc/xdr.h newlib/libc/sys/linux/include/rune.h newlib/libc/sys/linux/include/runetype.h newlib/libc/sys/linux/include/sched.h newlib/libc/sys/linux/include/semaphore.h newlib/libc/sys/linux/include/setjmp.h newlib/libc/sys/linux/include/setlocale.h newlib/libc/sys/linux/include/stdint.h newlib/libc/sys/linux/include/time.h newlib/libc/sys/linux/include/un-namespace.h newlib/libc/sys/linux/include/unistd.h newlib/libc/sys/linux/include/wordexp.h newlib/libc/sys/linux/inode.c newlib/libc/sys/linux/internal_statvfs.c newlib/libc/sys/linux/intl/Makefile.am newlib/libc/sys/linux/intl/Makefile.in newlib/libc/sys/linux/intl/bindtextdom.c newlib/libc/sys/linux/intl/catgets.c newlib/libc/sys/linux/intl/catgetsinfo.h newlib/libc/sys/linux/intl/config.h newlib/libc/sys/linux/intl/dcgettext.c newlib/libc/sys/linux/intl/dcigettext.c newlib/libc/sys/linux/intl/dcngettext.c newlib/libc/sys/linux/intl/dgettext.c newlib/libc/sys/linux/intl/dngettext.c newlib/libc/sys/linux/intl/explodename.c newlib/libc/sys/linux/intl/finddomain.c newlib/libc/sys/linux/intl/gettext.c newlib/libc/sys/linux/intl/gettext.h newlib/libc/sys/linux/intl/gettextP.h newlib/libc/sys/linux/intl/hash-string.h newlib/libc/sys/linux/intl/l10nflist.c newlib/libc/sys/linux/intl/lcl_stpcpy.c newlib/libc/sys/linux/intl/loadinfo.h newlib/libc/sys/linux/intl/loadmsgcat.c newlib/libc/sys/linux/intl/localealias.c newlib/libc/sys/linux/intl/ngettext.c newlib/libc/sys/linux/intl/open_catalog.c newlib/libc/sys/linux/intl/plural.c newlib/libc/sys/linux/intl/plural.y newlib/libc/sys/linux/intl/textdomain.c newlib/libc/sys/linux/io.c newlib/libc/sys/linux/io64.c newlib/libc/sys/linux/ipc.c newlib/libc/sys/linux/isatty.c newlib/libc/sys/linux/kernel_sigaction.h newlib/libc/sys/linux/libc-internal.h newlib/libc/sys/linux/libc-symbols.h newlib/libc/sys/linux/libc-tsd.h newlib/libc/sys/linux/libintl.h newlib/libc/sys/linux/linux.c newlib/libc/sys/linux/linux_fsinfo.h newlib/libc/sys/linux/linuxthreads/LICENSE newlib/libc/sys/linux/linuxthreads/Makefile.am newlib/libc/sys/linux/linuxthreads/Makefile.in newlib/libc/sys/linux/linuxthreads/aclocal.m4 newlib/libc/sys/linux/linuxthreads/attr.c newlib/libc/sys/linux/linuxthreads/barrier.c newlib/libc/sys/linux/linuxthreads/bits/initspin.h newlib/libc/sys/linux/linuxthreads/bits/libc-lock.h newlib/libc/sys/linux/linuxthreads/bits/libc-tsd.h newlib/libc/sys/linux/linuxthreads/bits/local_lim.h newlib/libc/sys/linux/linuxthreads/bits/posix_opt.h newlib/libc/sys/linux/linuxthreads/bits/pthreadtypes.h newlib/libc/sys/linux/linuxthreads/bits/sigthread.h newlib/libc/sys/linux/linuxthreads/bp-sym.h newlib/libc/sys/linux/linuxthreads/cancel.c newlib/libc/sys/linux/linuxthreads/condvar.c newlib/libc/sys/linux/linuxthreads/config.h newlib/libc/sys/linux/linuxthreads/configure newlib/libc/sys/linux/linuxthreads/configure.in newlib/libc/sys/linux/linuxthreads/defs.awk newlib/libc/sys/linux/linuxthreads/ecmutex.c newlib/libc/sys/linux/linuxthreads/events.c newlib/libc/sys/linux/linuxthreads/getcpuclockid.c newlib/libc/sys/linux/linuxthreads/getreent.c newlib/libc/sys/linux/linuxthreads/internals.h newlib/libc/sys/linux/linuxthreads/join.c newlib/libc/sys/linux/linuxthreads/joinrace.c newlib/libc/sys/linux/linuxthreads/kernel-features.h newlib/libc/sys/linux/linuxthreads/libc-internal.h newlib/libc/sys/linux/linuxthreads/libc-symbols.h newlib/libc/sys/linux/linuxthreads/linuxthreads.texi newlib/libc/sys/linux/linuxthreads/lockfile.c newlib/libc/sys/linux/linuxthreads/machine/Makefile.am newlib/libc/sys/linux/linuxthreads/machine/Makefile.in newlib/libc/sys/linux/linuxthreads/machine/aclocal.m4 newlib/libc/sys/linux/linuxthreads/machine/configure newlib/libc/sys/linux/linuxthreads/machine/configure.in newlib/libc/sys/linux/linuxthreads/machine/generic/generic-sysdep.h newlib/libc/sys/linux/linuxthreads/machine/i386/Makefile.am newlib/libc/sys/linux/linuxthreads/machine/i386/Makefile.in newlib/libc/sys/linux/linuxthreads/machine/i386/aclocal.m4 newlib/libc/sys/linux/linuxthreads/machine/i386/bp-asm.h newlib/libc/sys/linux/linuxthreads/machine/i386/clone.S newlib/libc/sys/linux/linuxthreads/machine/i386/configure newlib/libc/sys/linux/linuxthreads/machine/i386/configure.in newlib/libc/sys/linux/linuxthreads/machine/i386/i386-sysdep.S newlib/libc/sys/linux/linuxthreads/machine/i386/i386-sysdep.h newlib/libc/sys/linux/linuxthreads/machine/i386/pspinlock.c newlib/libc/sys/linux/linuxthreads/machine/i386/pt-machine.h newlib/libc/sys/linux/linuxthreads/machine/i386/sigcontextinfo.h newlib/libc/sys/linux/linuxthreads/machine/i386/stackinfo.h newlib/libc/sys/linux/linuxthreads/machine/i386/sysdep.S newlib/libc/sys/linux/linuxthreads/machine/i386/sysdep.h newlib/libc/sys/linux/linuxthreads/machine/i386/useldt.h newlib/libc/sys/linux/linuxthreads/manager.c newlib/libc/sys/linux/linuxthreads/mq_notify.c newlib/libc/sys/linux/linuxthreads/mutex.c newlib/libc/sys/linux/linuxthreads/no-tsd.c newlib/libc/sys/linux/linuxthreads/oldsemaphore.c newlib/libc/sys/linux/linuxthreads/posix-timer.h newlib/libc/sys/linux/linuxthreads/prio.c newlib/libc/sys/linux/linuxthreads/proc_service.h newlib/libc/sys/linux/linuxthreads/pt-machine.c newlib/libc/sys/linux/linuxthreads/ptclock_gettime.c newlib/libc/sys/linux/linuxthreads/ptclock_settime.c newlib/libc/sys/linux/linuxthreads/ptfork.c newlib/libc/sys/linux/linuxthreads/pthread.c newlib/libc/sys/linux/linuxthreads/ptlongjmp.c newlib/libc/sys/linux/linuxthreads/queue.h newlib/libc/sys/linux/linuxthreads/reent.c newlib/libc/sys/linux/linuxthreads/reqsyscalls.c newlib/libc/sys/linux/linuxthreads/restart.h newlib/libc/sys/linux/linuxthreads/rwlock.c newlib/libc/sys/linux/linuxthreads/semaphore.c newlib/libc/sys/linux/linuxthreads/semaphore.h newlib/libc/sys/linux/linuxthreads/shlib-compat.h newlib/libc/sys/linux/linuxthreads/signals.c newlib/libc/sys/linux/linuxthreads/specific.c newlib/libc/sys/linux/linuxthreads/spinlock.c newlib/libc/sys/linux/linuxthreads/spinlock.h newlib/libc/sys/linux/linuxthreads/sysctl.c newlib/libc/sys/linux/linuxthreads/td_init.c newlib/libc/sys/linux/linuxthreads/td_log.c newlib/libc/sys/linux/linuxthreads/td_symbol_list.c newlib/libc/sys/linux/linuxthreads/td_ta_clear_event.c newlib/libc/sys/linux/linuxthreads/td_ta_delete.c newlib/libc/sys/linux/linuxthreads/td_ta_enable_stats.c newlib/libc/sys/linux/linuxthreads/td_ta_event_addr.c newlib/libc/sys/linux/linuxthreads/td_ta_event_getmsg.c newlib/libc/sys/linux/linuxthreads/td_ta_get_nthreads.c newlib/libc/sys/linux/linuxthreads/td_ta_get_ph.c newlib/libc/sys/linux/linuxthreads/td_ta_get_stats.c newlib/libc/sys/linux/linuxthreads/td_ta_map_id2thr.c newlib/libc/sys/linux/linuxthreads/td_ta_map_lwp2thr.c newlib/libc/sys/linux/linuxthreads/td_ta_new.c newlib/libc/sys/linux/linuxthreads/td_ta_reset_stats.c newlib/libc/sys/linux/linuxthreads/td_ta_set_event.c newlib/libc/sys/linux/linuxthreads/td_ta_setconcurrency.c newlib/libc/sys/linux/linuxthreads/td_ta_thr_iter.c newlib/libc/sys/linux/linuxthreads/td_ta_tsd_iter.c newlib/libc/sys/linux/linuxthreads/td_thr_clear_event.c newlib/libc/sys/linux/linuxthreads/td_thr_dbresume.c newlib/libc/sys/linux/linuxthreads/td_thr_dbsuspend.c newlib/libc/sys/linux/linuxthreads/td_thr_event_enable.c newlib/libc/sys/linux/linuxthreads/td_thr_event_getmsg.c newlib/libc/sys/linux/linuxthreads/td_thr_get_info.c newlib/libc/sys/linux/linuxthreads/td_thr_getfpregs.c newlib/libc/sys/linux/linuxthreads/td_thr_getgregs.c newlib/libc/sys/linux/linuxthreads/td_thr_getxregs.c newlib/libc/sys/linux/linuxthreads/td_thr_getxregsize.c newlib/libc/sys/linux/linuxthreads/td_thr_set_event.c newlib/libc/sys/linux/linuxthreads/td_thr_setfpregs.c newlib/libc/sys/linux/linuxthreads/td_thr_setgregs.c newlib/libc/sys/linux/linuxthreads/td_thr_setprio.c newlib/libc/sys/linux/linuxthreads/td_thr_setsigpending.c newlib/libc/sys/linux/linuxthreads/td_thr_setxregs.c newlib/libc/sys/linux/linuxthreads/td_thr_sigsetmask.c newlib/libc/sys/linux/linuxthreads/td_thr_tsd.c newlib/libc/sys/linux/linuxthreads/td_thr_validate.c newlib/libc/sys/linux/linuxthreads/testrtsig.h newlib/libc/sys/linux/linuxthreads/thread_db.h newlib/libc/sys/linux/linuxthreads/thread_dbP.h newlib/libc/sys/linux/linuxthreads/timer_create.c newlib/libc/sys/linux/linuxthreads/timer_delete.c newlib/libc/sys/linux/linuxthreads/timer_getoverr.c newlib/libc/sys/linux/linuxthreads/timer_gettime.c newlib/libc/sys/linux/linuxthreads/timer_routines.c newlib/libc/sys/linux/linuxthreads/timer_settime.c newlib/libc/sys/linux/linuxthreads/tst-cancel.c newlib/libc/sys/linux/linuxthreads/tst-context.c newlib/libc/sys/linux/linuxthreads/tststack.c newlib/libc/sys/linux/linuxthreads/unload.c newlib/libc/sys/linux/linuxthreads/weaks.c newlib/libc/sys/linux/linuxthreads/wrapsyscall.c newlib/libc/sys/linux/machine/Makefile.am newlib/libc/sys/linux/machine/Makefile.in newlib/libc/sys/linux/machine/aclocal.m4 newlib/libc/sys/linux/machine/configure newlib/libc/sys/linux/machine/configure.in newlib/libc/sys/linux/machine/hp-timing.h newlib/libc/sys/linux/machine/i386/Makefile.am newlib/libc/sys/linux/machine/i386/Makefile.in newlib/libc/sys/linux/machine/i386/aclocal.m4 newlib/libc/sys/linux/machine/i386/atomic.h newlib/libc/sys/linux/machine/i386/configure newlib/libc/sys/linux/machine/i386/configure.in newlib/libc/sys/linux/machine/i386/crt0.c newlib/libc/sys/linux/machine/i386/dl-machine.h newlib/libc/sys/linux/machine/i386/dl-procinfo.c newlib/libc/sys/linux/machine/i386/dl-procinfo.h newlib/libc/sys/linux/machine/i386/get_clockfreq.c newlib/libc/sys/linux/machine/i386/getpagesize.c newlib/libc/sys/linux/machine/i386/hp-timing.c newlib/libc/sys/linux/machine/i386/hp-timing.h newlib/libc/sys/linux/machine/i386/huge_val.h newlib/libc/sys/linux/machine/i386/i386mach.h newlib/libc/sys/linux/machine/i386/include/endian.h newlib/libc/sys/linux/machine/i386/include/param.h newlib/libc/sys/linux/machine/i386/include/setjmp.h newlib/libc/sys/linux/machine/i386/include/termios.h newlib/libc/sys/linux/machine/i386/setjmp.S newlib/libc/sys/linux/machine/i386/sigaction.c newlib/libc/sys/linux/machine/i386/sigstack.h newlib/libc/sys/linux/machine/i386/socketcall.h newlib/libc/sys/linux/machine/i386/syscall.h newlib/libc/sys/linux/machine/i386/sysdep.h newlib/libc/sys/linux/machine/i386/weakalias.h newlib/libc/sys/linux/malign.c newlib/libc/sys/linux/malignr.c newlib/libc/sys/linux/mallinfor.c newlib/libc/sys/linux/malloc.c newlib/libc/sys/linux/mallocr.c newlib/libc/sys/linux/malloptr.c newlib/libc/sys/linux/mallstatsr.c newlib/libc/sys/linux/mcheck.c newlib/libc/sys/linux/mhooks.h newlib/libc/sys/linux/mmap.c newlib/libc/sys/linux/mntent.c newlib/libc/sys/linux/mntent_r.c newlib/libc/sys/linux/mq_close.c newlib/libc/sys/linux/mq_getattr.c newlib/libc/sys/linux/mq_notify.c newlib/libc/sys/linux/mq_open.c newlib/libc/sys/linux/mq_receive.c newlib/libc/sys/linux/mq_send.c newlib/libc/sys/linux/mq_setattr.c newlib/libc/sys/linux/mq_unlink.c newlib/libc/sys/linux/mqlocal.h newlib/libc/sys/linux/msize.c newlib/libc/sys/linux/msizer.c newlib/libc/sys/linux/mstats.c newlib/libc/sys/linux/mtrim.c newlib/libc/sys/linux/mtrimr.c newlib/libc/sys/linux/net/Makefile.am newlib/libc/sys/linux/net/Makefile.in newlib/libc/sys/linux/net/XXX-lookup.c newlib/libc/sys/linux/net/addr2ascii.c newlib/libc/sys/linux/net/alias-lookup.c newlib/libc/sys/linux/net/aliases.h newlib/libc/sys/linux/net/ascii2addr.c newlib/libc/sys/linux/net/base64.c newlib/libc/sys/linux/net/check_pf.c newlib/libc/sys/linux/net/databases.def newlib/libc/sys/linux/net/digits_dots.c newlib/libc/sys/linux/net/ether_aton.c newlib/libc/sys/linux/net/ether_aton_r.c newlib/libc/sys/linux/net/ether_hton.c newlib/libc/sys/linux/net/ether_line.c newlib/libc/sys/linux/net/ether_ntoa.c newlib/libc/sys/linux/net/ether_ntoa_r.c newlib/libc/sys/linux/net/ether_ntoh.c newlib/libc/sys/linux/net/etherent.h newlib/libc/sys/linux/net/ethers-lookup.c newlib/libc/sys/linux/net/function.def newlib/libc/sys/linux/net/getXXbyYY.c newlib/libc/sys/linux/net/getXXbyYY_r.c newlib/libc/sys/linux/net/getXXent.c newlib/libc/sys/linux/net/getXXent_r.c newlib/libc/sys/linux/net/getaddrinfo.c newlib/libc/sys/linux/net/getaliasent.c newlib/libc/sys/linux/net/getaliasent_r.c newlib/libc/sys/linux/net/getaliasname.c newlib/libc/sys/linux/net/getaliasname_r.c newlib/libc/sys/linux/net/gethstbyad.c newlib/libc/sys/linux/net/gethstbyad_r.c newlib/libc/sys/linux/net/gethstbynm.c newlib/libc/sys/linux/net/gethstbynm2.c newlib/libc/sys/linux/net/gethstbynm2_r.c newlib/libc/sys/linux/net/gethstbynm_r.c newlib/libc/sys/linux/net/gethstent.c newlib/libc/sys/linux/net/gethstent_r.c newlib/libc/sys/linux/net/getnameinfo.c newlib/libc/sys/linux/net/getnetbyad.c newlib/libc/sys/linux/net/getnetbyad_r.c newlib/libc/sys/linux/net/getnetbynm.c newlib/libc/sys/linux/net/getnetbynm_r.c newlib/libc/sys/linux/net/getnetent.c newlib/libc/sys/linux/net/getnetent_r.c newlib/libc/sys/linux/net/getnetgrent.c newlib/libc/sys/linux/net/getnetgrent_r.c newlib/libc/sys/linux/net/getnssent.c newlib/libc/sys/linux/net/getnssent_r.c newlib/libc/sys/linux/net/getproto.c newlib/libc/sys/linux/net/getproto_r.c newlib/libc/sys/linux/net/getprtent.c newlib/libc/sys/linux/net/getprtent_r.c newlib/libc/sys/linux/net/getprtname.c newlib/libc/sys/linux/net/getprtname_r.c newlib/libc/sys/linux/net/getrpcbyname.c newlib/libc/sys/linux/net/getrpcbyname_r.c newlib/libc/sys/linux/net/getrpcbynumber.c newlib/libc/sys/linux/net/getrpcbynumber_r.c newlib/libc/sys/linux/net/getrpcent.c newlib/libc/sys/linux/net/getrpcent_r.c newlib/libc/sys/linux/net/getservent.c newlib/libc/sys/linux/net/getservent_r.c newlib/libc/sys/linux/net/getsrvbynm.c newlib/libc/sys/linux/net/getsrvbynm_r.c newlib/libc/sys/linux/net/getsrvbypt.c newlib/libc/sys/linux/net/getsrvbypt_r.c newlib/libc/sys/linux/net/grp-lookup.c newlib/libc/sys/linux/net/herrno.c newlib/libc/sys/linux/net/hosts-lookup.c newlib/libc/sys/linux/net/ifaddrs.h newlib/libc/sys/linux/net/ifname.c newlib/libc/sys/linux/net/ifreq.c newlib/libc/sys/linux/net/ifreq.h newlib/libc/sys/linux/net/in6_addr.c newlib/libc/sys/linux/net/inet6_option.c newlib/libc/sys/linux/net/inet_addr.c newlib/libc/sys/linux/net/inet_lnaof.c newlib/libc/sys/linux/net/inet_mkadr.c newlib/libc/sys/linux/net/inet_net.c newlib/libc/sys/linux/net/inet_net_ntop.c newlib/libc/sys/linux/net/inet_net_pton.c newlib/libc/sys/linux/net/inet_neta.c newlib/libc/sys/linux/net/inet_netof.c newlib/libc/sys/linux/net/inet_ntoa.c newlib/libc/sys/linux/net/inet_ntop.c newlib/libc/sys/linux/net/inet_pton.c newlib/libc/sys/linux/net/issetugid-stub.c newlib/libc/sys/linux/net/key-lookup.c newlib/libc/sys/linux/net/local.h newlib/libc/sys/linux/net/netgroup.h newlib/libc/sys/linux/net/netgrp-lookup.c newlib/libc/sys/linux/net/network-lookup.c newlib/libc/sys/linux/net/not-cancel.h newlib/libc/sys/linux/net/ns_name.c newlib/libc/sys/linux/net/ns_netint.c newlib/libc/sys/linux/net/ns_parse.c newlib/libc/sys/linux/net/ns_print.c newlib/libc/sys/linux/net/ns_samedomain.c newlib/libc/sys/linux/net/ns_ttl.c newlib/libc/sys/linux/net/nsap_addr.c newlib/libc/sys/linux/net/nscd-types.h newlib/libc/sys/linux/net/nscd/nscd-client.h newlib/libc/sys/linux/net/nscd/nscd_proto.h newlib/libc/sys/linux/net/nss.h newlib/libc/sys/linux/net/nsswitch.c newlib/libc/sys/linux/net/nsswitch.h newlib/libc/sys/linux/net/opensock.c newlib/libc/sys/linux/net/proto-lookup.c newlib/libc/sys/linux/net/pwd-lookup.c newlib/libc/sys/linux/net/rcmd.c newlib/libc/sys/linux/net/rcmdsh.c newlib/libc/sys/linux/net/recv.c newlib/libc/sys/linux/net/res_comp.c newlib/libc/sys/linux/net/res_data.c newlib/libc/sys/linux/net/res_debug.c newlib/libc/sys/linux/net/res_debug.h newlib/libc/sys/linux/net/res_hconf.c newlib/libc/sys/linux/net/res_hconf.h newlib/libc/sys/linux/net/res_init.c newlib/libc/sys/linux/net/res_libc.c newlib/libc/sys/linux/net/res_mkquery.c newlib/libc/sys/linux/net/res_query.c newlib/libc/sys/linux/net/res_send.c newlib/libc/sys/linux/net/rexec.c newlib/libc/sys/linux/net/rpc-lookup.c newlib/libc/sys/linux/net/ruserpass.c newlib/libc/sys/linux/net/send.c newlib/libc/sys/linux/net/service-lookup.c newlib/libc/sys/linux/net/spwd-lookup.c newlib/libc/sys/linux/net/un-namespace.h newlib/libc/sys/linux/ntp_gettime.c newlib/libc/sys/linux/pathconf.c newlib/libc/sys/linux/pread.c newlib/libc/sys/linux/pread64.c newlib/libc/sys/linux/process.c newlib/libc/sys/linux/prof-freq.c newlib/libc/sys/linux/profile.c newlib/libc/sys/linux/psignal.c newlib/libc/sys/linux/pvallocr.c newlib/libc/sys/linux/pwrite.c newlib/libc/sys/linux/pwrite64.c newlib/libc/sys/linux/raise.c newlib/libc/sys/linux/readdir64.c newlib/libc/sys/linux/realloc.c newlib/libc/sys/linux/reallocr.c newlib/libc/sys/linux/realpath.c newlib/libc/sys/linux/rename.c newlib/libc/sys/linux/resource.c newlib/libc/sys/linux/scandir64.c newlib/libc/sys/linux/sched.c newlib/libc/sys/linux/select.c newlib/libc/sys/linux/seteuid.c newlib/libc/sys/linux/sethostid.c newlib/libc/sys/linux/sethostname.c newlib/libc/sys/linux/setrlimit64.c newlib/libc/sys/linux/shared.ld newlib/libc/sys/linux/shlib-compat.h newlib/libc/sys/linux/shm_open.c newlib/libc/sys/linux/shm_unlink.c newlib/libc/sys/linux/sig.c newlib/libc/sys/linux/sigaction.c newlib/libc/sys/linux/siglongjmp.c newlib/libc/sys/linux/signal.c newlib/libc/sys/linux/sigqueue.c newlib/libc/sys/linux/sigset.c newlib/libc/sys/linux/sigwait.c newlib/libc/sys/linux/sleep.c newlib/libc/sys/linux/socket.c newlib/libc/sys/linux/sockops.h newlib/libc/sys/linux/stack.c newlib/libc/sys/linux/statvfs.c newlib/libc/sys/linux/statvfs64.c newlib/libc/sys/linux/strsignal.c newlib/libc/sys/linux/strverscmp.c newlib/libc/sys/linux/sys/_types.h newlib/libc/sys/linux/sys/cdefs.h newlib/libc/sys/linux/sys/dirent.h newlib/libc/sys/linux/sys/dlfcn.h newlib/libc/sys/linux/sys/elfclass.h newlib/libc/sys/linux/sys/errno.h newlib/libc/sys/linux/sys/event.h newlib/libc/sys/linux/sys/fcntl.h newlib/libc/sys/linux/sys/features.h newlib/libc/sys/linux/sys/file.h newlib/libc/sys/linux/sys/ioccom.h newlib/libc/sys/linux/sys/ioctl.h newlib/libc/sys/linux/sys/libc-lock.h newlib/libc/sys/linux/sys/libc-tsd.h newlib/libc/sys/linux/sys/link.h newlib/libc/sys/linux/sys/linux_time.h newlib/libc/sys/linux/sys/lock.h newlib/libc/sys/linux/sys/param.h newlib/libc/sys/linux/sys/resource.h newlib/libc/sys/linux/sys/select.h newlib/libc/sys/linux/sys/signal.h newlib/libc/sys/linux/sys/socket.h newlib/libc/sys/linux/sys/sockio.h newlib/libc/sys/linux/sys/stat.h newlib/libc/sys/linux/sys/stdint.h newlib/libc/sys/linux/sys/stdio.h newlib/libc/sys/linux/sys/string.h newlib/libc/sys/linux/sys/termios.h newlib/libc/sys/linux/sys/time.h newlib/libc/sys/linux/sys/types.h newlib/libc/sys/linux/sys/unistd.h newlib/libc/sys/linux/sys/utime.h newlib/libc/sys/linux/sys/utmp.h newlib/libc/sys/linux/sys/utsname.h newlib/libc/sys/linux/sys/wait.h newlib/libc/sys/linux/sysconf.c newlib/libc/sys/linux/sysctl.c newlib/libc/sys/linux/systat.c newlib/libc/sys/linux/system.c newlib/libc/sys/linux/tcdrain.c newlib/libc/sys/linux/tcsendbrk.c newlib/libc/sys/linux/termios.c newlib/libc/sys/linux/thread-m.h newlib/libc/sys/linux/time.c newlib/libc/sys/linux/ttyname_r.c newlib/libc/sys/linux/usleep.c newlib/libc/sys/linux/utimes.c newlib/libc/sys/linux/vallocr.c newlib/libc/sys/linux/versionsort.c newlib/libc/sys/linux/versionsort64.c newlib/libc/sys/linux/wait.c newlib/libc/sys/m88kbug/Makefile.am newlib/libc/sys/m88kbug/Makefile.in newlib/libc/sys/m88kbug/aclocal.m4 newlib/libc/sys/m88kbug/configure newlib/libc/sys/m88kbug/configure.in newlib/libc/sys/m88kbug/crt0.c newlib/libc/sys/m88kbug/sys/systraps.h newlib/libc/sys/m88kbug/syscalls.c newlib/libc/sys/mmixware/Makefile.am newlib/libc/sys/mmixware/Makefile.in newlib/libc/sys/mmixware/_exit.c newlib/libc/sys/mmixware/access.c newlib/libc/sys/mmixware/aclocal.m4 newlib/libc/sys/mmixware/chmod.c newlib/libc/sys/mmixware/chown.c newlib/libc/sys/mmixware/close.c newlib/libc/sys/mmixware/configure newlib/libc/sys/mmixware/configure.in newlib/libc/sys/mmixware/creat.c newlib/libc/sys/mmixware/crt0.c newlib/libc/sys/mmixware/execv.c newlib/libc/sys/mmixware/execve.c newlib/libc/sys/mmixware/fork.c newlib/libc/sys/mmixware/fstat.c newlib/libc/sys/mmixware/getpid.c newlib/libc/sys/mmixware/gettime.c newlib/libc/sys/mmixware/isatty.c newlib/libc/sys/mmixware/kill.c newlib/libc/sys/mmixware/link.c newlib/libc/sys/mmixware/lseek.c newlib/libc/sys/mmixware/open.c newlib/libc/sys/mmixware/pipe.c newlib/libc/sys/mmixware/read.c newlib/libc/sys/mmixware/sbrk.c newlib/libc/sys/mmixware/setjmp.S newlib/libc/sys/mmixware/stat.c newlib/libc/sys/mmixware/sys/syscall.h newlib/libc/sys/mmixware/time.c newlib/libc/sys/mmixware/times.c newlib/libc/sys/mmixware/unlink.c newlib/libc/sys/mmixware/utime.c newlib/libc/sys/mmixware/wait.c newlib/libc/sys/mmixware/write.c newlib/libc/sys/netware/Makefile.am newlib/libc/sys/netware/Makefile.in newlib/libc/sys/netware/aclocal.m4 newlib/libc/sys/netware/configure newlib/libc/sys/netware/configure.in newlib/libc/sys/netware/crt0.c newlib/libc/sys/netware/getpid.c newlib/libc/sys/netware/link.c newlib/libc/sys/rdos/Makefile.am newlib/libc/sys/rdos/Makefile.in newlib/libc/sys/rdos/aclocal.m4 newlib/libc/sys/rdos/chown.c newlib/libc/sys/rdos/close.c newlib/libc/sys/rdos/config.h newlib/libc/sys/rdos/configure newlib/libc/sys/rdos/configure.in newlib/libc/sys/rdos/crt0.S newlib/libc/sys/rdos/execve.c newlib/libc/sys/rdos/fork.c newlib/libc/sys/rdos/fstat.c newlib/libc/sys/rdos/getenv.c newlib/libc/sys/rdos/getpid.c newlib/libc/sys/rdos/gettod.c newlib/libc/sys/rdos/isatty.c newlib/libc/sys/rdos/kill.c newlib/libc/sys/rdos/link.c newlib/libc/sys/rdos/lseek.c newlib/libc/sys/rdos/open.c newlib/libc/sys/rdos/rdos.S newlib/libc/sys/rdos/rdos.h newlib/libc/sys/rdos/rdoshelp.c newlib/libc/sys/rdos/read.c newlib/libc/sys/rdos/readlink.c newlib/libc/sys/rdos/sbrk.c newlib/libc/sys/rdos/stat.c newlib/libc/sys/rdos/symlink.c newlib/libc/sys/rdos/times.c newlib/libc/sys/rdos/unlink.c newlib/libc/sys/rdos/user.def newlib/libc/sys/rdos/wait.c newlib/libc/sys/rdos/write.c newlib/libc/sys/rtems/Makefile.am newlib/libc/sys/rtems/Makefile.in newlib/libc/sys/rtems/aclocal.m4 newlib/libc/sys/rtems/configure newlib/libc/sys/rtems/configure.in newlib/libc/sys/rtems/crt0.c newlib/libc/sys/rtems/dummysys.c newlib/libc/sys/rtems/include/limits.h newlib/libc/sys/rtems/machine/limits.h newlib/libc/sys/rtems/machine/param.h newlib/libc/sys/rtems/sys/dirent.h newlib/libc/sys/rtems/sys/param.h newlib/libc/sys/rtems/sys/queue.h newlib/libc/sys/rtems/sys/syslimits.h newlib/libc/sys/rtems/sys/utime.h newlib/libc/sys/sh/Makefile.am newlib/libc/sys/sh/Makefile.in newlib/libc/sys/sh/aclocal.m4 newlib/libc/sys/sh/configure newlib/libc/sys/sh/configure.in newlib/libc/sys/sh/creat.c newlib/libc/sys/sh/crt0.S newlib/libc/sys/sh/ftruncate.c newlib/libc/sys/sh/sys/syscall.h newlib/libc/sys/sh/syscalls.c newlib/libc/sys/sh/trap.S newlib/libc/sys/sh/truncate.c newlib/libc/sys/sparc64/Makefile.am newlib/libc/sys/sparc64/Makefile.in newlib/libc/sys/sparc64/_exit.S newlib/libc/sys/sparc64/_main.c newlib/libc/sys/sparc64/aclocal.m4 newlib/libc/sys/sparc64/cerror.S newlib/libc/sys/sparc64/closedir.c newlib/libc/sys/sparc64/configure newlib/libc/sys/sparc64/configure.in newlib/libc/sys/sparc64/creat.c newlib/libc/sys/sparc64/crt0.S newlib/libc/sys/sparc64/dup2.S newlib/libc/sys/sparc64/execve.S newlib/libc/sys/sparc64/ieee.c newlib/libc/sys/sparc64/isatty.c newlib/libc/sys/sparc64/lstat.S newlib/libc/sys/sparc64/opendir.c newlib/libc/sys/sparc64/readdir.c newlib/libc/sys/sparc64/rewinddir.c newlib/libc/sys/sparc64/sbrk.S newlib/libc/sys/sparc64/scandir.c newlib/libc/sys/sparc64/seekdir.c newlib/libc/sys/sparc64/sigsetjmp.S newlib/libc/sys/sparc64/stat.S newlib/libc/sys/sparc64/sys/dirent.h newlib/libc/sys/sparc64/sys/fcntl.h newlib/libc/sys/sparc64/sys/file.h newlib/libc/sys/sparc64/sys/stat.h newlib/libc/sys/sparc64/sys/syscall.h newlib/libc/sys/sparc64/sys/syscallasm.h newlib/libc/sys/sparc64/sys/termios.h newlib/libc/sys/sparc64/sys/time.h newlib/libc/sys/sparc64/sys/utime.h newlib/libc/sys/sparc64/sys/utmp.h newlib/libc/sys/sparc64/sys/wait.h newlib/libc/sys/sparc64/telldir.c newlib/libc/sys/sparc64/template.S newlib/libc/sys/sparc64/template_r.S newlib/libc/sys/sparc64/utime.S newlib/libc/sys/sparc64/utime2.c newlib/libc/sys/sparc64/wait.S newlib/libc/sys/sun4/Makefile.am newlib/libc/sys/sun4/Makefile.in newlib/libc/sys/sun4/_main.c newlib/libc/sys/sun4/aclocal.m4 newlib/libc/sys/sun4/configure newlib/libc/sys/sun4/configure.in newlib/libc/sys/sun4/ieee.c newlib/libc/sys/sun4/sys/dirent.h newlib/libc/sys/sun4/sys/file.h newlib/libc/sys/sun4/sys/termios.h newlib/libc/sys/sun4/sys/utime.h newlib/libc/sys/sun4/sys/utmp.h newlib/libc/sys/sun4/sys/wait.h newlib/libc/sys/sysmec/Makefile.am newlib/libc/sys/sysmec/Makefile.in newlib/libc/sys/sysmec/_exit.c newlib/libc/sys/sysmec/access.c newlib/libc/sys/sysmec/aclocal.m4 newlib/libc/sys/sysmec/chmod.c newlib/libc/sys/sysmec/chown.c newlib/libc/sys/sysmec/close.c newlib/libc/sys/sysmec/configure newlib/libc/sys/sysmec/configure.in newlib/libc/sys/sysmec/creat.c newlib/libc/sys/sysmec/crt0.S newlib/libc/sys/sysmec/crt1.c newlib/libc/sys/sysmec/execv.c newlib/libc/sys/sysmec/execve.c newlib/libc/sys/sysmec/fork.c newlib/libc/sys/sysmec/fstat.c newlib/libc/sys/sysmec/getpid.c newlib/libc/sys/sysmec/gettime.c newlib/libc/sys/sysmec/isatty.c newlib/libc/sys/sysmec/kill.c newlib/libc/sys/sysmec/lseek.c newlib/libc/sys/sysmec/open.c newlib/libc/sys/sysmec/pipe.c newlib/libc/sys/sysmec/read.c newlib/libc/sys/sysmec/sbrk.c newlib/libc/sys/sysmec/stat.c newlib/libc/sys/sysmec/sys/syscall.h newlib/libc/sys/sysmec/time.c newlib/libc/sys/sysmec/times.c newlib/libc/sys/sysmec/trap.S newlib/libc/sys/sysmec/unlink.c newlib/libc/sys/sysmec/utime.c newlib/libc/sys/sysmec/wait.c newlib/libc/sys/sysmec/write.c newlib/libc/sys/sysnec810/Makefile.am newlib/libc/sys/sysnec810/Makefile.in newlib/libc/sys/sysnec810/aclocal.m4 newlib/libc/sys/sysnec810/configure newlib/libc/sys/sysnec810/configure.in newlib/libc/sys/sysnec810/crt0.S newlib/libc/sys/sysnec810/io.S newlib/libc/sys/sysnec810/misc.c newlib/libc/sys/sysnec810/sbrk.c newlib/libc/sys/sysnec810/write.c newlib/libc/sys/sysnecv850/Makefile.am newlib/libc/sys/sysnecv850/Makefile.in newlib/libc/sys/sysnecv850/_exit.c newlib/libc/sys/sysnecv850/access.c newlib/libc/sys/sysnecv850/aclocal.m4 newlib/libc/sys/sysnecv850/chmod.c newlib/libc/sys/sysnecv850/chown.c newlib/libc/sys/sysnecv850/close.c newlib/libc/sys/sysnecv850/configure newlib/libc/sys/sysnecv850/configure.in newlib/libc/sys/sysnecv850/creat.c newlib/libc/sys/sysnecv850/crt0.S newlib/libc/sys/sysnecv850/crt1.c newlib/libc/sys/sysnecv850/execv.c newlib/libc/sys/sysnecv850/execve.c newlib/libc/sys/sysnecv850/fork.c newlib/libc/sys/sysnecv850/fstat.c newlib/libc/sys/sysnecv850/getpid.c newlib/libc/sys/sysnecv850/gettime.c newlib/libc/sys/sysnecv850/isatty.c newlib/libc/sys/sysnecv850/kill.c newlib/libc/sys/sysnecv850/link.c newlib/libc/sys/sysnecv850/lseek.c newlib/libc/sys/sysnecv850/open.c newlib/libc/sys/sysnecv850/pipe.c newlib/libc/sys/sysnecv850/read.c newlib/libc/sys/sysnecv850/sbrk.c newlib/libc/sys/sysnecv850/stat.c newlib/libc/sys/sysnecv850/sys/syscall.h newlib/libc/sys/sysnecv850/time.c newlib/libc/sys/sysnecv850/times.c newlib/libc/sys/sysnecv850/trap.S newlib/libc/sys/sysnecv850/unlink.c newlib/libc/sys/sysnecv850/utime.c newlib/libc/sys/sysnecv850/wait.c newlib/libc/sys/sysnecv850/write.c newlib/libc/sys/sysvi386/Makefile.am newlib/libc/sys/sysvi386/Makefile.in newlib/libc/sys/sysvi386/_exit.S newlib/libc/sys/sysvi386/_longjmp.S newlib/libc/sys/sysvi386/_setjmp.S newlib/libc/sys/sysvi386/access.S newlib/libc/sys/sysvi386/aclocal.m4 newlib/libc/sys/sysvi386/alarm.S newlib/libc/sys/sysvi386/brk.S newlib/libc/sys/sysvi386/cerror.S newlib/libc/sys/sysvi386/chdir.S newlib/libc/sys/sysvi386/chmod.S newlib/libc/sys/sysvi386/close.S newlib/libc/sys/sysvi386/closedir.c newlib/libc/sys/sysvi386/configure newlib/libc/sys/sysvi386/configure.in newlib/libc/sys/sysvi386/crt0.c newlib/libc/sys/sysvi386/dup.c newlib/libc/sys/sysvi386/dup2.c newlib/libc/sys/sysvi386/exec.c newlib/libc/sys/sysvi386/execve.S newlib/libc/sys/sysvi386/fcntl.S newlib/libc/sys/sysvi386/fork.S newlib/libc/sys/sysvi386/fpathconf.S newlib/libc/sys/sysvi386/fps.S newlib/libc/sys/sysvi386/fpx.c newlib/libc/sys/sysvi386/fstat.S newlib/libc/sys/sysvi386/getdents.S newlib/libc/sys/sysvi386/getegid.S newlib/libc/sys/sysvi386/geteuid.S newlib/libc/sys/sysvi386/getgid.S newlib/libc/sys/sysvi386/getgroups.S newlib/libc/sys/sysvi386/getpid.S 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newlib/libc/sys/z8ksim/configure.in newlib/libc/sys/z8ksim/crt0.c newlib/libc/sys/z8ksim/glue.c newlib/libc/sys/z8ksim/sys/syscall.h newlib/libc/syscalls/Makefile.am newlib/libc/syscalls/Makefile.in newlib/libc/syscalls/sysclose.c newlib/libc/syscalls/sysexecve.c newlib/libc/syscalls/sysfcntl.c newlib/libc/syscalls/sysfork.c newlib/libc/syscalls/sysfstat.c newlib/libc/syscalls/sysgetpid.c newlib/libc/syscalls/sysgettod.c newlib/libc/syscalls/sysisatty.c newlib/libc/syscalls/syskill.c newlib/libc/syscalls/syslink.c newlib/libc/syscalls/syslseek.c newlib/libc/syscalls/sysopen.c newlib/libc/syscalls/sysread.c newlib/libc/syscalls/syssbrk.c newlib/libc/syscalls/sysstat.c newlib/libc/syscalls/systimes.c newlib/libc/syscalls/sysunlink.c newlib/libc/syscalls/syswait.c newlib/libc/syscalls/syswrite.c newlib/libc/time/Makefile.am newlib/libc/time/Makefile.in newlib/libc/time/asctime.c newlib/libc/time/asctime_r.c newlib/libc/time/clock.c newlib/libc/time/ctime.c newlib/libc/time/ctime_r.c newlib/libc/time/difftime.c newlib/libc/time/gettzinfo.c newlib/libc/time/gmtime.c newlib/libc/time/gmtime_r.c newlib/libc/time/lcltime.c newlib/libc/time/lcltime_r.c newlib/libc/time/local.h newlib/libc/time/mktime.c newlib/libc/time/mktm_r.c newlib/libc/time/strftime.c newlib/libc/time/strptime.c newlib/libc/time/time.c newlib/libc/time/time.tex newlib/libc/time/tzlock.c newlib/libc/time/tzset.c newlib/libc/time/tzset_r.c newlib/libc/time/tzvars.c newlib/libc/unix/Makefile.am newlib/libc/unix/Makefile.in newlib/libc/unix/basename.c newlib/libc/unix/dirname.c newlib/libc/unix/getcwd.c newlib/libc/unix/getlogin.c newlib/libc/unix/getpass.c newlib/libc/unix/getpwent.c newlib/libc/unix/getut.c newlib/libc/unix/pread.c newlib/libc/unix/pwrite.c newlib/libc/unix/sigset.c newlib/libc/unix/ttyname.c newlib/libm/Makefile.am newlib/libm/Makefile.in newlib/libm/aclocal.m4 newlib/libm/common/Makefile.am newlib/libm/common/Makefile.in newlib/libm/common/fdlibm.h newlib/libm/common/s_cbrt.c newlib/libm/common/s_copysign.c newlib/libm/common/s_exp10.c newlib/libm/common/s_expm1.c newlib/libm/common/s_fdim.c newlib/libm/common/s_finite.c newlib/libm/common/s_fma.c newlib/libm/common/s_fmax.c newlib/libm/common/s_fmin.c newlib/libm/common/s_fpclassify.c newlib/libm/common/s_ilogb.c newlib/libm/common/s_infconst.c newlib/libm/common/s_infinity.c newlib/libm/common/s_isinf.c newlib/libm/common/s_isinfd.c newlib/libm/common/s_isnan.c newlib/libm/common/s_isnand.c newlib/libm/common/s_lib_ver.c newlib/libm/common/s_log1p.c newlib/libm/common/s_logb.c newlib/libm/common/s_lrint.c newlib/libm/common/s_lround.c newlib/libm/common/s_matherr.c newlib/libm/common/s_modf.c newlib/libm/common/s_nan.c newlib/libm/common/s_nearbyint.c newlib/libm/common/s_nextafter.c newlib/libm/common/s_pow10.c newlib/libm/common/s_remquo.c newlib/libm/common/s_rint.c newlib/libm/common/s_round.c newlib/libm/common/s_scalbln.c newlib/libm/common/s_scalbn.c newlib/libm/common/s_signbit.c newlib/libm/common/s_trunc.c newlib/libm/common/sf_cbrt.c newlib/libm/common/sf_copysign.c newlib/libm/common/sf_exp10.c newlib/libm/common/sf_expm1.c newlib/libm/common/sf_fdim.c newlib/libm/common/sf_finite.c newlib/libm/common/sf_fma.c newlib/libm/common/sf_fmax.c newlib/libm/common/sf_fmin.c newlib/libm/common/sf_fpclassify.c newlib/libm/common/sf_ilogb.c newlib/libm/common/sf_infinity.c newlib/libm/common/sf_isinf.c newlib/libm/common/sf_isinff.c newlib/libm/common/sf_isnan.c newlib/libm/common/sf_isnanf.c newlib/libm/common/sf_log1p.c newlib/libm/common/sf_logb.c newlib/libm/common/sf_lrint.c newlib/libm/common/sf_lround.c newlib/libm/common/sf_modf.c newlib/libm/common/sf_nan.c newlib/libm/common/sf_nearbyint.c newlib/libm/common/sf_nextafter.c newlib/libm/common/sf_pow10.c newlib/libm/common/sf_remquo.c newlib/libm/common/sf_rint.c newlib/libm/common/sf_round.c newlib/libm/common/sf_scalbln.c newlib/libm/common/sf_scalbn.c newlib/libm/common/sf_trunc.c newlib/libm/config.h.in newlib/libm/configure newlib/libm/configure.in newlib/libm/libm.texinfo newlib/libm/machine/Makefile.am newlib/libm/machine/Makefile.in newlib/libm/machine/aclocal.m4 newlib/libm/machine/configure newlib/libm/machine/configure.in newlib/libm/machine/i386/Makefile.am newlib/libm/machine/i386/Makefile.in newlib/libm/machine/i386/aclocal.m4 newlib/libm/machine/i386/configure newlib/libm/machine/i386/configure.in newlib/libm/machine/i386/f_atan2.S newlib/libm/machine/i386/f_atan2f.S newlib/libm/machine/i386/f_exp.c newlib/libm/machine/i386/f_expf.c newlib/libm/machine/i386/f_frexp.S newlib/libm/machine/i386/f_frexpf.S newlib/libm/machine/i386/f_ldexp.S newlib/libm/machine/i386/f_ldexpf.S newlib/libm/machine/i386/f_llrint.c newlib/libm/machine/i386/f_llrintf.c newlib/libm/machine/i386/f_llrintl.c newlib/libm/machine/i386/f_log.S newlib/libm/machine/i386/f_log10.S newlib/libm/machine/i386/f_log10f.S newlib/libm/machine/i386/f_logf.S newlib/libm/machine/i386/f_lrint.c newlib/libm/machine/i386/f_lrintf.c newlib/libm/machine/i386/f_lrintl.c newlib/libm/machine/i386/f_math.h newlib/libm/machine/i386/f_pow.c newlib/libm/machine/i386/f_powf.c newlib/libm/machine/i386/f_rint.c newlib/libm/machine/i386/f_rintf.c newlib/libm/machine/i386/f_rintl.c newlib/libm/machine/i386/f_tan.S newlib/libm/machine/i386/f_tanf.S newlib/libm/machine/i386/i386mach.h newlib/libm/machine/spu/Makefile.am newlib/libm/machine/spu/Makefile.in newlib/libm/machine/spu/aclocal.m4 newlib/libm/machine/spu/configure newlib/libm/machine/spu/configure.in newlib/libm/machine/spu/fe_dfl_env.c newlib/libm/machine/spu/feclearexcept.c newlib/libm/machine/spu/fegetenv.c newlib/libm/machine/spu/fegetexceptflag.c newlib/libm/machine/spu/fegetround.c newlib/libm/machine/spu/feholdexcept.c newlib/libm/machine/spu/feraiseexcept.c newlib/libm/machine/spu/fesetenv.c newlib/libm/machine/spu/fesetexceptflag.c newlib/libm/machine/spu/fesetround.c newlib/libm/machine/spu/fetestexcept.c newlib/libm/machine/spu/feupdateenv.c newlib/libm/machine/spu/headers/acos.h newlib/libm/machine/spu/headers/acosd2.h newlib/libm/machine/spu/headers/acosf.h newlib/libm/machine/spu/headers/acosf4.h newlib/libm/machine/spu/headers/acosh.h newlib/libm/machine/spu/headers/acoshd2.h newlib/libm/machine/spu/headers/acoshf.h newlib/libm/machine/spu/headers/acoshf4.h newlib/libm/machine/spu/headers/asin.h newlib/libm/machine/spu/headers/asind2.h newlib/libm/machine/spu/headers/asinf.h newlib/libm/machine/spu/headers/asinf4.h newlib/libm/machine/spu/headers/asinh.h newlib/libm/machine/spu/headers/asinhd2.h newlib/libm/machine/spu/headers/asinhf.h newlib/libm/machine/spu/headers/asinhf4.h newlib/libm/machine/spu/headers/atan.h newlib/libm/machine/spu/headers/atan2.h newlib/libm/machine/spu/headers/atan2d2.h newlib/libm/machine/spu/headers/atan2f.h newlib/libm/machine/spu/headers/atan2f4.h newlib/libm/machine/spu/headers/atand2.h newlib/libm/machine/spu/headers/atanf.h newlib/libm/machine/spu/headers/atanf4.h newlib/libm/machine/spu/headers/atanh.h newlib/libm/machine/spu/headers/atanhd2.h newlib/libm/machine/spu/headers/atanhf.h newlib/libm/machine/spu/headers/atanhf4.h newlib/libm/machine/spu/headers/cbrt.h newlib/libm/machine/spu/headers/cbrtf.h newlib/libm/machine/spu/headers/ceil.h newlib/libm/machine/spu/headers/ceilf.h newlib/libm/machine/spu/headers/copysign.h newlib/libm/machine/spu/headers/copysignf.h newlib/libm/machine/spu/headers/cos.h newlib/libm/machine/spu/headers/cos_sin.h newlib/libm/machine/spu/headers/cosd2.h newlib/libm/machine/spu/headers/cosf.h newlib/libm/machine/spu/headers/cosf4.h newlib/libm/machine/spu/headers/cosh.h newlib/libm/machine/spu/headers/coshd2.h newlib/libm/machine/spu/headers/coshf.h newlib/libm/machine/spu/headers/coshf4.h newlib/libm/machine/spu/headers/divd2.h newlib/libm/machine/spu/headers/divf4.h newlib/libm/machine/spu/headers/dom_chkd_less_than.h newlib/libm/machine/spu/headers/dom_chkd_negone_one.h newlib/libm/machine/spu/headers/dom_chkf_less_than.h newlib/libm/machine/spu/headers/dom_chkf_negone_one.h newlib/libm/machine/spu/headers/erf.h newlib/libm/machine/spu/headers/erf_utils.h newlib/libm/machine/spu/headers/erfc.h newlib/libm/machine/spu/headers/erfcd2.h newlib/libm/machine/spu/headers/erfcf.h newlib/libm/machine/spu/headers/erfcf4.h newlib/libm/machine/spu/headers/erfd2.h newlib/libm/machine/spu/headers/erff.h newlib/libm/machine/spu/headers/erff4.h newlib/libm/machine/spu/headers/exp.h newlib/libm/machine/spu/headers/exp2.h newlib/libm/machine/spu/headers/exp2d2.h newlib/libm/machine/spu/headers/exp2f.h newlib/libm/machine/spu/headers/exp2f4.h newlib/libm/machine/spu/headers/expd2.h newlib/libm/machine/spu/headers/expf.h newlib/libm/machine/spu/headers/expf4.h newlib/libm/machine/spu/headers/expm1.h newlib/libm/machine/spu/headers/expm1d2.h newlib/libm/machine/spu/headers/expm1f.h newlib/libm/machine/spu/headers/expm1f4.h newlib/libm/machine/spu/headers/fabs.h newlib/libm/machine/spu/headers/fabsf.h newlib/libm/machine/spu/headers/fdim.h newlib/libm/machine/spu/headers/fdimf.h newlib/libm/machine/spu/headers/feclearexcept.h newlib/libm/machine/spu/headers/fefpscr.h newlib/libm/machine/spu/headers/fegetenv.h newlib/libm/machine/spu/headers/fegetexceptflag.h newlib/libm/machine/spu/headers/fegetround.h newlib/libm/machine/spu/headers/feholdexcept.h newlib/libm/machine/spu/headers/feraiseexcept.h newlib/libm/machine/spu/headers/fesetenv.h newlib/libm/machine/spu/headers/fesetexceptflag.h newlib/libm/machine/spu/headers/fesetround.h newlib/libm/machine/spu/headers/fetestexcept.h newlib/libm/machine/spu/headers/feupdateenv.h newlib/libm/machine/spu/headers/floor.h newlib/libm/machine/spu/headers/floord2.h newlib/libm/machine/spu/headers/floorf.h newlib/libm/machine/spu/headers/floorf4.h newlib/libm/machine/spu/headers/fma.h newlib/libm/machine/spu/headers/fmaf.h newlib/libm/machine/spu/headers/fmax.h newlib/libm/machine/spu/headers/fmaxf.h 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newlib/libm/machine/spu/headers/llrint.h newlib/libm/machine/spu/headers/llrintf.h newlib/libm/machine/spu/headers/llround.h newlib/libm/machine/spu/headers/llroundf.h newlib/libm/machine/spu/headers/log.h newlib/libm/machine/spu/headers/log10.h newlib/libm/machine/spu/headers/log10d2.h newlib/libm/machine/spu/headers/log10f.h newlib/libm/machine/spu/headers/log1p.h newlib/libm/machine/spu/headers/log1pd2.h newlib/libm/machine/spu/headers/log1pf.h newlib/libm/machine/spu/headers/log1pf4.h newlib/libm/machine/spu/headers/log2.h newlib/libm/machine/spu/headers/log2d2.h newlib/libm/machine/spu/headers/log2f.h newlib/libm/machine/spu/headers/log2f4.h newlib/libm/machine/spu/headers/logbf.h newlib/libm/machine/spu/headers/logbf4.h newlib/libm/machine/spu/headers/logd2.h newlib/libm/machine/spu/headers/logf.h newlib/libm/machine/spu/headers/logf4.h newlib/libm/machine/spu/headers/lrint.h newlib/libm/machine/spu/headers/lrintf.h newlib/libm/machine/spu/headers/lround.h 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winsup/w32api/include/rpcnterr.h winsup/w32api/include/rpcproxy.h winsup/w32api/include/rtutils.h winsup/w32api/include/schannel.h winsup/w32api/include/schnlsp.h winsup/w32api/include/scrnsave.h winsup/w32api/include/sddl.h winsup/w32api/include/secext.h winsup/w32api/include/security.h winsup/w32api/include/servprov.h winsup/w32api/include/setupapi.h winsup/w32api/include/shellapi.h winsup/w32api/include/shldisp.h winsup/w32api/include/shlguid.h winsup/w32api/include/shlobj.h winsup/w32api/include/shlwapi.h winsup/w32api/include/snmp.h winsup/w32api/include/specstrings.h winsup/w32api/include/sql.h winsup/w32api/include/sqlext.h winsup/w32api/include/sqltypes.h winsup/w32api/include/sqlucode.h winsup/w32api/include/sspi.h winsup/w32api/include/stm.h winsup/w32api/include/strmif.h winsup/w32api/include/subauth.h winsup/w32api/include/svcguid.h winsup/w32api/include/tlhelp32.h winsup/w32api/include/tmschema.h winsup/w32api/include/unknwn.h winsup/w32api/include/userenv.h winsup/w32api/include/usp10.h winsup/w32api/include/uxtheme.h winsup/w32api/include/vfw.h winsup/w32api/include/vidcap.h winsup/w32api/include/vmr9.h winsup/w32api/include/vptype.h winsup/w32api/include/w32api.h winsup/w32api/include/winable.h winsup/w32api/include/winbase.h winsup/w32api/include/winber.h winsup/w32api/include/wincon.h winsup/w32api/include/wincrypt.h winsup/w32api/include/windef.h winsup/w32api/include/windns.h winsup/w32api/include/windows.h winsup/w32api/include/windowsx.h winsup/w32api/include/winerror.h winsup/w32api/include/wingdi.h winsup/w32api/include/wininet.h winsup/w32api/include/winioctl.h winsup/w32api/include/winldap.h winsup/w32api/include/winnetwk.h winsup/w32api/include/winnls.h winsup/w32api/include/winnt.h winsup/w32api/include/winperf.h winsup/w32api/include/winreg.h winsup/w32api/include/winresrc.h winsup/w32api/include/winsnmp.h winsup/w32api/include/winsock.h winsup/w32api/include/winsock2.h winsup/w32api/include/winspool.h winsup/w32api/include/winsvc.h winsup/w32api/include/winuser.h winsup/w32api/include/winver.h winsup/w32api/include/ws2spi.h winsup/w32api/include/ws2tcpip.h winsup/w32api/include/wsahelp.h winsup/w32api/include/wsipx.h winsup/w32api/include/wsnetbs.h winsup/w32api/include/wtsapi32.h winsup/w32api/include/wtypes.h winsup/w32api/include/xprtdefs.h winsup/w32api/include/zmouse.h winsup/w32api/install-sh winsup/w32api/lib/Makefile.in winsup/w32api/lib/aclui.def winsup/w32api/lib/advapi32.def winsup/w32api/lib/ativscp-uuid.c winsup/w32api/lib/avicap32.def winsup/w32api/lib/avifil32.def winsup/w32api/lib/bthprops.def winsup/w32api/lib/cap.def winsup/w32api/lib/cguid-uuid.c winsup/w32api/lib/comcat-uuid.c winsup/w32api/lib/comctl32.def winsup/w32api/lib/comdlg32.def winsup/w32api/lib/crypt32.def winsup/w32api/lib/ctl3d32.def winsup/w32api/lib/ddk/Makefile.in winsup/w32api/lib/ddk/apcups.def winsup/w32api/lib/ddk/cfgmgr32.def winsup/w32api/lib/ddk/dxapi.def winsup/w32api/lib/ddk/hal.def winsup/w32api/lib/ddk/hid.def winsup/w32api/lib/ddk/hidparse.def winsup/w32api/lib/ddk/mcd.def winsup/w32api/lib/ddk/ndis.def winsup/w32api/lib/ddk/newdev.def winsup/w32api/lib/ddk/ntoskrnl.def winsup/w32api/lib/ddk/scsiport.def winsup/w32api/lib/ddk/tdi.def winsup/w32api/lib/ddk/usbcamd.def winsup/w32api/lib/ddk/usbcamd2.def winsup/w32api/lib/ddk/videoprt.def winsup/w32api/lib/ddk/win32k.def winsup/w32api/lib/devguid.c winsup/w32api/lib/dhcpcsvc.def winsup/w32api/lib/directx/Makefile.in winsup/w32api/lib/directx/d3d8.def winsup/w32api/lib/directx/d3d9.def winsup/w32api/lib/directx/d3dim.def winsup/w32api/lib/directx/d3drm.def winsup/w32api/lib/directx/d3dx8d.def winsup/w32api/lib/directx/d3dx9d.def winsup/w32api/lib/directx/d3dxof.def winsup/w32api/lib/directx/ddraw.def winsup/w32api/lib/directx/dinput.def winsup/w32api/lib/directx/dinput8.def winsup/w32api/lib/directx/dinput_joy.c winsup/w32api/lib/directx/dinput_joy2.c winsup/w32api/lib/directx/dinput_kbd.c winsup/w32api/lib/directx/dinput_mouse.c winsup/w32api/lib/directx/dinput_mouse2.c winsup/w32api/lib/directx/dinput_private.h winsup/w32api/lib/directx/dmoguids.c winsup/w32api/lib/directx/dplayx.def winsup/w32api/lib/directx/dpnaddr.def winsup/w32api/lib/directx/dpnet.def winsup/w32api/lib/directx/dpnlobby.def winsup/w32api/lib/directx/dpvoice.def winsup/w32api/lib/directx/dsetup.def winsup/w32api/lib/directx/dsound.def winsup/w32api/lib/directx/dxerr.c winsup/w32api/lib/directx/dxerr8.c winsup/w32api/lib/directx/dxerr8w.c winsup/w32api/lib/directx/dxerr9.c winsup/w32api/lib/directx/dxerr9w.c winsup/w32api/lib/directx/dxguid.c winsup/w32api/lib/directx/ksproxy.def winsup/w32api/lib/directx/ksuser.c winsup/w32api/lib/directx/ksuser.def winsup/w32api/lib/directx/msdmo.def winsup/w32api/lib/directx/strmiids.c winsup/w32api/lib/directx/test.c winsup/w32api/lib/dlcapi.def winsup/w32api/lib/dnsapi.def winsup/w32api/lib/docobj-uuid.c winsup/w32api/lib/exdisp-uuid.c winsup/w32api/lib/extras-uuid.c winsup/w32api/lib/faultrep.def winsup/w32api/lib/gdi32.def winsup/w32api/lib/glaux.def winsup/w32api/lib/glu32.def winsup/w32api/lib/glut.def winsup/w32api/lib/glut32.def winsup/w32api/lib/hlguids-uuid.c winsup/w32api/lib/hlink-uuid.c winsup/w32api/lib/icmui.def winsup/w32api/lib/igmpagnt.def winsup/w32api/lib/imagehlp.def winsup/w32api/lib/imm32.def winsup/w32api/lib/iphlpapi.def winsup/w32api/lib/kernel32.def winsup/w32api/lib/largeint.c winsup/w32api/lib/lz32.def winsup/w32api/lib/mapi32.def winsup/w32api/lib/mfcuia32.def winsup/w32api/lib/mgmtapi.def winsup/w32api/lib/mlang-uuid.c winsup/w32api/lib/mpr.def winsup/w32api/lib/mprapi.def winsup/w32api/lib/mqrt.def winsup/w32api/lib/msacm32.def winsup/w32api/lib/mscms.def winsup/w32api/lib/mshtml-uuid.c winsup/w32api/lib/msimg32.def winsup/w32api/lib/msvcp60.def winsup/w32api/lib/msvfw32.def winsup/w32api/lib/mswsock.def winsup/w32api/lib/msxml-uuid.c winsup/w32api/lib/nddeapi.def winsup/w32api/lib/netapi32.def winsup/w32api/lib/ntdll.def winsup/w32api/lib/oaidl-uuid.c winsup/w32api/lib/objidl-uuid.c winsup/w32api/lib/objsafe-uuid.c winsup/w32api/lib/ocidl-uuid.c winsup/w32api/lib/odbc32.def winsup/w32api/lib/odbccp32.def winsup/w32api/lib/ole32.def winsup/w32api/lib/oleacc-uuid.c winsup/w32api/lib/oleacc.def winsup/w32api/lib/oleaut32.def winsup/w32api/lib/olecli32.def winsup/w32api/lib/olectlid-uuid.c winsup/w32api/lib/oledlg.def winsup/w32api/lib/oleidl-uuid.c winsup/w32api/lib/olepro32.def winsup/w32api/lib/olesvr32.def winsup/w32api/lib/opengl32.def winsup/w32api/lib/penwin32.def winsup/w32api/lib/pkpd32.def winsup/w32api/lib/power-uuid.c winsup/w32api/lib/powrprof.def winsup/w32api/lib/psapi.def winsup/w32api/lib/quartz.def winsup/w32api/lib/rapi.def winsup/w32api/lib/rasapi32.def winsup/w32api/lib/rasdlg.def winsup/w32api/lib/res.rc winsup/w32api/lib/rpcdce4.def winsup/w32api/lib/rpcns4.def winsup/w32api/lib/rpcrt4.def winsup/w32api/lib/rtm.def winsup/w32api/lib/rtutils.def winsup/w32api/lib/scrnsave.c winsup/w32api/lib/secur32.def winsup/w32api/lib/servprov-uuid.c winsup/w32api/lib/setupapi.def winsup/w32api/lib/shell32.c winsup/w32api/lib/shell32.def winsup/w32api/lib/shfolder.def winsup/w32api/lib/shlwapi.def winsup/w32api/lib/snmpapi.def winsup/w32api/lib/svrapi.def winsup/w32api/lib/tapi32.def winsup/w32api/lib/test.c winsup/w32api/lib/th32.def winsup/w32api/lib/thunk32.def winsup/w32api/lib/unknwn-uuid.c winsup/w32api/lib/url.def winsup/w32api/lib/urlmon-uuid.c winsup/w32api/lib/user32.def winsup/w32api/lib/userenv.def winsup/w32api/lib/usp10.def winsup/w32api/lib/uxtheme.def winsup/w32api/lib/vdmdbg.def winsup/w32api/lib/version.def winsup/w32api/lib/vfw32.mri winsup/w32api/lib/win32spl.def winsup/w32api/lib/wininet.def winsup/w32api/lib/winmm.def winsup/w32api/lib/winspool.def winsup/w32api/lib/winstrm.def winsup/w32api/lib/wldap32.def winsup/w32api/lib/wow32.def winsup/w32api/lib/ws2_32.c winsup/w32api/lib/ws2_32.def winsup/w32api/lib/wsnmp32.def winsup/w32api/lib/wsock32.def winsup/w32api/lib/wst.def winsup/w32api/lib/wtsapi32.def
Diffstat (limited to 'newlib/libc/sys/linux/malloc.c')
-rw-r--r--newlib/libc/sys/linux/malloc.c5082
1 files changed, 0 insertions, 5082 deletions
diff --git a/newlib/libc/sys/linux/malloc.c b/newlib/libc/sys/linux/malloc.c
deleted file mode 100644
index 25007e889..000000000
--- a/newlib/libc/sys/linux/malloc.c
+++ /dev/null
@@ -1,5082 +0,0 @@
-/* Malloc implementation for multiple threads without lock contention.
- Copyright (C) 1996-2001, 2002 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Wolfram Gloger <wmglo@dent.med.uni-muenchen.de>
- and Doug Lea <dl@cs.oswego.edu>, 1996.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
-
-/* $Id$
-
- This work is mainly derived from malloc-2.6.4 by Doug Lea
- <dl@cs.oswego.edu>, which is available from:
-
- ftp://g.oswego.edu/pub/misc/malloc.c
-
- Most of the original comments are reproduced in the code below.
-
-* Why use this malloc?
-
- This is not the fastest, most space-conserving, most portable, or
- most tunable malloc ever written. However it is among the fastest
- while also being among the most space-conserving, portable and tunable.
- Consistent balance across these factors results in a good general-purpose
- allocator. For a high-level description, see
- http://g.oswego.edu/dl/html/malloc.html
-
- On many systems, the standard malloc implementation is by itself not
- thread-safe, and therefore wrapped with a single global lock around
- all malloc-related functions. In some applications, especially with
- multiple available processors, this can lead to contention problems
- and bad performance. This malloc version was designed with the goal
- to avoid waiting for locks as much as possible. Statistics indicate
- that this goal is achieved in many cases.
-
-* Synopsis of public routines
-
- (Much fuller descriptions are contained in the program documentation below.)
-
- ptmalloc_init();
- Initialize global configuration. When compiled for multiple threads,
- this function must be called once before any other function in the
- package. It is not required otherwise. It is called automatically
- in the Linux/GNU C libray or when compiling with MALLOC_HOOKS.
- malloc(size_t n);
- Return a pointer to a newly allocated chunk of at least n bytes, or null
- if no space is available.
- free(Void_t* p);
- Release the chunk of memory pointed to by p, or no effect if p is null.
- realloc(Void_t* p, size_t n);
- Return a pointer to a chunk of size n that contains the same data
- as does chunk p up to the minimum of (n, p's size) bytes, or null
- if no space is available. The returned pointer may or may not be
- the same as p. If p is null, equivalent to malloc. Unless the
- #define REALLOC_ZERO_BYTES_FREES below is set, realloc with a
- size argument of zero (re)allocates a minimum-sized chunk.
- memalign(size_t alignment, size_t n);
- Return a pointer to a newly allocated chunk of n bytes, aligned
- in accord with the alignment argument, which must be a power of
- two.
- valloc(size_t n);
- Equivalent to memalign(pagesize, n), where pagesize is the page
- size of the system (or as near to this as can be figured out from
- all the includes/defines below.)
- pvalloc(size_t n);
- Equivalent to valloc(minimum-page-that-holds(n)), that is,
- round up n to nearest pagesize.
- calloc(size_t unit, size_t quantity);
- Returns a pointer to quantity * unit bytes, with all locations
- set to zero.
- cfree(Void_t* p);
- Equivalent to free(p).
- malloc_trim(size_t pad);
- Release all but pad bytes of freed top-most memory back
- to the system. Return 1 if successful, else 0.
- malloc_usable_size(Void_t* p);
- Report the number usable allocated bytes associated with allocated
- chunk p. This may or may not report more bytes than were requested,
- due to alignment and minimum size constraints.
- malloc_stats();
- Prints brief summary statistics on stderr.
- mallinfo()
- Returns (by copy) a struct containing various summary statistics.
- mallopt(int parameter_number, int parameter_value)
- Changes one of the tunable parameters described below. Returns
- 1 if successful in changing the parameter, else 0.
-
-* Vital statistics:
-
- Alignment: 8-byte
- 8 byte alignment is currently hardwired into the design. This
- seems to suffice for all current machines and C compilers.
-
- Assumed pointer representation: 4 or 8 bytes
- Code for 8-byte pointers is untested by me but has worked
- reliably by Wolfram Gloger, who contributed most of the
- changes supporting this.
-
- Assumed size_t representation: 4 or 8 bytes
- Note that size_t is allowed to be 4 bytes even if pointers are 8.
-
- Minimum overhead per allocated chunk: 4 or 8 bytes
- Each malloced chunk has a hidden overhead of 4 bytes holding size
- and status information.
-
- Minimum allocated size: 4-byte ptrs: 16 bytes (including 4 overhead)
- 8-byte ptrs: 24/32 bytes (including, 4/8 overhead)
-
- When a chunk is freed, 12 (for 4byte ptrs) or 20 (for 8 byte
- ptrs but 4 byte size) or 24 (for 8/8) additional bytes are
- needed; 4 (8) for a trailing size field
- and 8 (16) bytes for free list pointers. Thus, the minimum
- allocatable size is 16/24/32 bytes.
-
- Even a request for zero bytes (i.e., malloc(0)) returns a
- pointer to something of the minimum allocatable size.
-
- Maximum allocated size: 4-byte size_t: 2^31 - 8 bytes
- 8-byte size_t: 2^63 - 16 bytes
-
- It is assumed that (possibly signed) size_t bit values suffice to
- represent chunk sizes. `Possibly signed' is due to the fact
- that `size_t' may be defined on a system as either a signed or
- an unsigned type. To be conservative, values that would appear
- as negative numbers are avoided.
- Requests for sizes with a negative sign bit will return a
- minimum-sized chunk.
-
- Maximum overhead wastage per allocated chunk: normally 15 bytes
-
- Alignment demands, plus the minimum allocatable size restriction
- make the normal worst-case wastage 15 bytes (i.e., up to 15
- more bytes will be allocated than were requested in malloc), with
- two exceptions:
- 1. Because requests for zero bytes allocate non-zero space,
- the worst case wastage for a request of zero bytes is 24 bytes.
- 2. For requests >= mmap_threshold that are serviced via
- mmap(), the worst case wastage is 8 bytes plus the remainder
- from a system page (the minimal mmap unit); typically 4096 bytes.
-
-* Limitations
-
- Here are some features that are NOT currently supported
-
- * No automated mechanism for fully checking that all accesses
- to malloced memory stay within their bounds.
- * No support for compaction.
-
-* Synopsis of compile-time options:
-
- People have reported using previous versions of this malloc on all
- versions of Unix, sometimes by tweaking some of the defines
- below. It has been tested most extensively on Solaris and
- Linux. People have also reported adapting this malloc for use in
- stand-alone embedded systems.
-
- The implementation is in straight, hand-tuned ANSI C. Among other
- consequences, it uses a lot of macros. Because of this, to be at
- all usable, this code should be compiled using an optimizing compiler
- (for example gcc -O2) that can simplify expressions and control
- paths.
-
- __STD_C (default: derived from C compiler defines)
- Nonzero if using ANSI-standard C compiler, a C++ compiler, or
- a C compiler sufficiently close to ANSI to get away with it.
- MALLOC_DEBUG (default: NOT defined)
- Define to enable debugging. Adds fairly extensive assertion-based
- checking to help track down memory errors, but noticeably slows down
- execution.
- MALLOC_HOOKS (default: NOT defined)
- Define to enable support run-time replacement of the allocation
- functions through user-defined `hooks'.
- REALLOC_ZERO_BYTES_FREES (default: defined)
- Define this if you think that realloc(p, 0) should be equivalent
- to free(p). (The C standard requires this behaviour, therefore
- it is the default.) Otherwise, since malloc returns a unique
- pointer for malloc(0), so does realloc(p, 0).
- HAVE_MEMCPY (default: defined)
- Define if you are not otherwise using ANSI STD C, but still
- have memcpy and memset in your C library and want to use them.
- Otherwise, simple internal versions are supplied.
- USE_MEMCPY (default: 1 if HAVE_MEMCPY is defined, 0 otherwise)
- Define as 1 if you want the C library versions of memset and
- memcpy called in realloc and calloc (otherwise macro versions are used).
- At least on some platforms, the simple macro versions usually
- outperform libc versions.
- HAVE_MMAP (default: defined as 1)
- Define to non-zero to optionally make malloc() use mmap() to
- allocate very large blocks.
- HAVE_MREMAP (default: defined as 0 unless Linux libc set)
- Define to non-zero to optionally make realloc() use mremap() to
- reallocate very large blocks.
- USE_ARENAS (default: the same as HAVE_MMAP)
- Enable support for multiple arenas, allocated using mmap().
- malloc_getpagesize (default: derived from system #includes)
- Either a constant or routine call returning the system page size.
- HAVE_USR_INCLUDE_MALLOC_H (default: NOT defined)
- Optionally define if you are on a system with a /usr/include/malloc.h
- that declares struct mallinfo. It is not at all necessary to
- define this even if you do, but will ensure consistency.
- INTERNAL_SIZE_T (default: size_t)
- Define to a 32-bit type (probably `unsigned int') if you are on a
- 64-bit machine, yet do not want or need to allow malloc requests of
- greater than 2^31 to be handled. This saves space, especially for
- very small chunks.
- _LIBC (default: NOT defined)
- Defined only when compiled as part of the Linux libc/glibc.
- Also note that there is some odd internal name-mangling via defines
- (for example, internally, `malloc' is named `mALLOc') needed
- when compiling in this case. These look funny but don't otherwise
- affect anything.
- LACKS_UNISTD_H (default: undefined)
- Define this if your system does not have a <unistd.h>.
- MORECORE (default: sbrk)
- The name of the routine to call to obtain more memory from the system.
- MORECORE_FAILURE (default: -1)
- The value returned upon failure of MORECORE.
- MORECORE_CLEARS (default 1)
- The degree to which the routine mapped to MORECORE zeroes out
- memory: never (0), only for newly allocated space (1) or always
- (2). The distinction between (1) and (2) is necessary because on
- some systems, if the application first decrements and then
- increments the break value, the contents of the reallocated space
- are unspecified.
- DEFAULT_TRIM_THRESHOLD
- DEFAULT_TOP_PAD
- DEFAULT_MMAP_THRESHOLD
- DEFAULT_MMAP_MAX
- Default values of tunable parameters (described in detail below)
- controlling interaction with host system routines (sbrk, mmap, etc).
- These values may also be changed dynamically via mallopt(). The
- preset defaults are those that give best performance for typical
- programs/systems.
- DEFAULT_CHECK_ACTION
- When the standard debugging hooks are in place, and a pointer is
- detected as corrupt, do nothing (0), print an error message (1),
- or call abort() (2).
-
-
-*/
-
-/*
-
-* Compile-time options for multiple threads:
-
- USE_PTHREADS, USE_THR, USE_SPROC
- Define one of these as 1 to select the thread interface:
- POSIX threads, Solaris threads or SGI sproc's, respectively.
- If none of these is defined as non-zero, you get a `normal'
- malloc implementation which is not thread-safe. Support for
- multiple threads requires HAVE_MMAP=1. As an exception, when
- compiling for GNU libc, i.e. when _LIBC is defined, then none of
- the USE_... symbols have to be defined.
-
- HEAP_MIN_SIZE
- HEAP_MAX_SIZE
- When thread support is enabled, additional `heap's are created
- with mmap calls. These are limited in size; HEAP_MIN_SIZE should
- be a multiple of the page size, while HEAP_MAX_SIZE must be a power
- of two for alignment reasons. HEAP_MAX_SIZE should be at least
- twice as large as the mmap threshold.
- THREAD_STATS
- When this is defined as non-zero, some statistics on mutex locking
- are computed.
-
-*/
-
-
-
-
-/* Preliminaries */
-
-#ifndef __STD_C
-#if defined (__STDC__)
-#define __STD_C 1
-#else
-#if __cplusplus
-#define __STD_C 1
-#else
-#define __STD_C 0
-#endif /*__cplusplus*/
-#endif /*__STDC__*/
-#endif /*__STD_C*/
-
-#ifndef Void_t
-#if __STD_C
-#define Void_t void
-#else
-#define Void_t char
-#endif
-#endif /*Void_t*/
-
-#define _GNU_SOURCE
-#include <features.h>
-#define _LIBC 1
-#define NOT_IN_libc 1
-
-#if __STD_C
-# include <stddef.h> /* for size_t */
-# if defined _LIBC || defined MALLOC_HOOKS
-# include <stdlib.h> /* for getenv(), abort() */
-# endif
-#else
-# include <sys/types.h>
-# if defined _LIBC || defined MALLOC_HOOKS
-extern char* getenv();
-# endif
-#endif
-
-/* newlib modifications */
-
-#include <libc-symbols.h>
-#include <sys/types.h>
-
-extern void __pthread_initialize (void) __attribute__((weak));
-extern void *__mmap (void *__addr, size_t __len, int __prot,
- int __flags, int __fd, off_t __offset);
-extern int __munmap (void *__addr, size_t __len);
-extern void *__mremap (void *__addr, size_t __old_len, size_t __new_len,
- int __may_move);
-extern int __getpagesize (void);
-
-#define __libc_enable_secure 1
-
-/* Macros for handling mutexes and thread-specific data. This is
- included early, because some thread-related header files (such as
- pthread.h) should be included before any others. */
-#include <bits/libc-lock.h>
-#include "thread-m.h"
-
-void *(*__malloc_internal_tsd_get) (enum __libc_tsd_key_t) = NULL;
-int (*__malloc_internal_tsd_set) (enum __libc_tsd_key_t,
- __const void *) = NULL;
-
-weak_alias(__malloc_internal_tsd_get, __libc_internal_tsd_get)
-weak_alias(__malloc_internal_tsd_set, __libc_internal_tsd_set)
-
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#include <errno.h>
-#include <stdio.h> /* needed for malloc_stats */
-
-
-/*
- Compile-time options
-*/
-
-
-/*
- Debugging:
-
- Because freed chunks may be overwritten with link fields, this
- malloc will often die when freed memory is overwritten by user
- programs. This can be very effective (albeit in an annoying way)
- in helping track down dangling pointers.
-
- If you compile with -DMALLOC_DEBUG, a number of assertion checks are
- enabled that will catch more memory errors. You probably won't be
- able to make much sense of the actual assertion errors, but they
- should help you locate incorrectly overwritten memory. The
- checking is fairly extensive, and will slow down execution
- noticeably. Calling malloc_stats or mallinfo with MALLOC_DEBUG set will
- attempt to check every non-mmapped allocated and free chunk in the
- course of computing the summaries. (By nature, mmapped regions
- cannot be checked very much automatically.)
-
- Setting MALLOC_DEBUG may also be helpful if you are trying to modify
- this code. The assertions in the check routines spell out in more
- detail the assumptions and invariants underlying the algorithms.
-
-*/
-
-#if MALLOC_DEBUG
-#include <assert.h>
-#else
-#define assert(x) ((void)0)
-#endif
-
-
-/*
- INTERNAL_SIZE_T is the word-size used for internal bookkeeping
- of chunk sizes. On a 64-bit machine, you can reduce malloc
- overhead by defining INTERNAL_SIZE_T to be a 32 bit `unsigned int'
- at the expense of not being able to handle requests greater than
- 2^31. This limitation is hardly ever a concern; you are encouraged
- to set this. However, the default version is the same as size_t.
-*/
-
-#ifndef INTERNAL_SIZE_T
-#define INTERNAL_SIZE_T size_t
-#endif
-
-/*
- REALLOC_ZERO_BYTES_FREES should be set if a call to realloc with
- zero bytes should be the same as a call to free. The C standard
- requires this. Otherwise, since this malloc returns a unique pointer
- for malloc(0), so does realloc(p, 0).
-*/
-
-
-#define REALLOC_ZERO_BYTES_FREES
-
-
-/*
- HAVE_MEMCPY should be defined if you are not otherwise using
- ANSI STD C, but still have memcpy and memset in your C library
- and want to use them in calloc and realloc. Otherwise simple
- macro versions are defined here.
-
- USE_MEMCPY should be defined as 1 if you actually want to
- have memset and memcpy called. People report that the macro
- versions are often enough faster than libc versions on many
- systems that it is better to use them.
-
-*/
-
-#define HAVE_MEMCPY 1
-
-#ifndef USE_MEMCPY
-#ifdef HAVE_MEMCPY
-#define USE_MEMCPY 1
-#else
-#define USE_MEMCPY 0
-#endif
-#endif
-
-#if (__STD_C || defined(HAVE_MEMCPY))
-
-#if __STD_C
-void* memset(void*, int, size_t);
-void* memcpy(void*, const void*, size_t);
-void* memmove(void*, const void*, size_t);
-#else
-Void_t* memset();
-Void_t* memcpy();
-Void_t* memmove();
-#endif
-#endif
-
-/* The following macros are only invoked with (2n+1)-multiples of
- INTERNAL_SIZE_T units, with a positive integer n. This is exploited
- for fast inline execution when n is small. If the regions to be
- copied do overlap, the destination lies always _below_ the source. */
-
-#if USE_MEMCPY
-
-#define MALLOC_ZERO(charp, nbytes) \
-do { \
- INTERNAL_SIZE_T mzsz = (nbytes); \
- if(mzsz <= 9*sizeof(mzsz)) { \
- INTERNAL_SIZE_T* mz = (INTERNAL_SIZE_T*) (charp); \
- if(mzsz >= 5*sizeof(mzsz)) { *mz++ = 0; \
- *mz++ = 0; \
- if(mzsz >= 7*sizeof(mzsz)) { *mz++ = 0; \
- *mz++ = 0; \
- if(mzsz >= 9*sizeof(mzsz)) { *mz++ = 0; \
- *mz++ = 0; }}} \
- *mz++ = 0; \
- *mz++ = 0; \
- *mz = 0; \
- } else memset((charp), 0, mzsz); \
-} while(0)
-
-/* If the regions overlap, dest is always _below_ src. */
-
-#define MALLOC_COPY(dest,src,nbytes,overlap) \
-do { \
- INTERNAL_SIZE_T mcsz = (nbytes); \
- if(mcsz <= 9*sizeof(mcsz)) { \
- INTERNAL_SIZE_T* mcsrc = (INTERNAL_SIZE_T*) (src); \
- INTERNAL_SIZE_T* mcdst = (INTERNAL_SIZE_T*) (dest); \
- if(mcsz >= 5*sizeof(mcsz)) { *mcdst++ = *mcsrc++; \
- *mcdst++ = *mcsrc++; \
- if(mcsz >= 7*sizeof(mcsz)) { *mcdst++ = *mcsrc++; \
- *mcdst++ = *mcsrc++; \
- if(mcsz >= 9*sizeof(mcsz)) { *mcdst++ = *mcsrc++; \
- *mcdst++ = *mcsrc++; }}} \
- *mcdst++ = *mcsrc++; \
- *mcdst++ = *mcsrc++; \
- *mcdst = *mcsrc ; \
- } else if(overlap) \
- memmove(dest, src, mcsz); \
- else \
- memcpy(dest, src, mcsz); \
-} while(0)
-
-#else /* !USE_MEMCPY */
-
-/* Use Duff's device for good zeroing/copying performance. */
-
-#define MALLOC_ZERO(charp, nbytes) \
-do { \
- INTERNAL_SIZE_T* mzp = (INTERNAL_SIZE_T*)(charp); \
- long mctmp = (nbytes)/sizeof(INTERNAL_SIZE_T), mcn; \
- if (mctmp < 8) mcn = 0; else { mcn = (mctmp-1)/8; mctmp %= 8; } \
- switch (mctmp) { \
- case 0: for(;;) { *mzp++ = 0; \
- case 7: *mzp++ = 0; \
- case 6: *mzp++ = 0; \
- case 5: *mzp++ = 0; \
- case 4: *mzp++ = 0; \
- case 3: *mzp++ = 0; \
- case 2: *mzp++ = 0; \
- case 1: *mzp++ = 0; if(mcn <= 0) break; mcn--; } \
- } \
-} while(0)
-
-/* If the regions overlap, dest is always _below_ src. */
-
-#define MALLOC_COPY(dest,src,nbytes,overlap) \
-do { \
- INTERNAL_SIZE_T* mcsrc = (INTERNAL_SIZE_T*) src; \
- INTERNAL_SIZE_T* mcdst = (INTERNAL_SIZE_T*) dest; \
- long mctmp = (nbytes)/sizeof(INTERNAL_SIZE_T), mcn; \
- if (mctmp < 8) mcn = 0; else { mcn = (mctmp-1)/8; mctmp %= 8; } \
- switch (mctmp) { \
- case 0: for(;;) { *mcdst++ = *mcsrc++; \
- case 7: *mcdst++ = *mcsrc++; \
- case 6: *mcdst++ = *mcsrc++; \
- case 5: *mcdst++ = *mcsrc++; \
- case 4: *mcdst++ = *mcsrc++; \
- case 3: *mcdst++ = *mcsrc++; \
- case 2: *mcdst++ = *mcsrc++; \
- case 1: *mcdst++ = *mcsrc++; if(mcn <= 0) break; mcn--; } \
- } \
-} while(0)
-
-#endif
-
-
-#ifndef LACKS_UNISTD_H
-# include <unistd.h>
-#endif
-
-/*
- Define HAVE_MMAP to optionally make malloc() use mmap() to allocate
- very large blocks. These will be returned to the operating system
- immediately after a free(). HAVE_MMAP is also a prerequisite to
- support multiple `arenas' (see USE_ARENAS below).
-*/
-
-#ifndef HAVE_MMAP
-# ifdef _POSIX_MAPPED_FILES
-# define HAVE_MMAP 1
-# endif
-#endif
-
-/*
- Define HAVE_MREMAP to make realloc() use mremap() to re-allocate
- large blocks. This is currently only possible on Linux with
- kernel versions newer than 1.3.77.
-*/
-
-#ifndef HAVE_MREMAP
-#define HAVE_MREMAP defined(__linux__)
-#endif
-
-/* Define USE_ARENAS to enable support for multiple `arenas'. These
- are allocated using mmap(), are necessary for threads and
- occasionally useful to overcome address space limitations affecting
- sbrk(). */
-
-#ifndef USE_ARENAS
-#define USE_ARENAS HAVE_MMAP
-#endif
-
-#if HAVE_MMAP
-
-#include <unistd.h>
-#include <fcntl.h>
-#include <sys/mman.h>
-
-#if !defined(MAP_ANONYMOUS) && defined(MAP_ANON)
-#define MAP_ANONYMOUS MAP_ANON
-#endif
-#if !defined(MAP_FAILED)
-#define MAP_FAILED ((char*)-1)
-#endif
-
-#ifndef MAP_NORESERVE
-# ifdef MAP_AUTORESRV
-# define MAP_NORESERVE MAP_AUTORESRV
-# else
-# define MAP_NORESERVE 0
-# endif
-#endif
-
-#endif /* HAVE_MMAP */
-
-/*
- Access to system page size. To the extent possible, this malloc
- manages memory from the system in page-size units.
-
- The following mechanics for getpagesize were adapted from
- bsd/gnu getpagesize.h
-*/
-
-#ifndef malloc_getpagesize
-# ifdef _SC_PAGESIZE /* some SVR4 systems omit an underscore */
-# ifndef _SC_PAGE_SIZE
-# define _SC_PAGE_SIZE _SC_PAGESIZE
-# endif
-# endif
-# ifdef _SC_PAGE_SIZE
-# define malloc_getpagesize sysconf(_SC_PAGE_SIZE)
-# else
-# if defined(BSD) || defined(DGUX) || defined(HAVE_GETPAGESIZE)
- extern size_t getpagesize();
-# define malloc_getpagesize getpagesize()
-# else
-# include <sys/param.h>
-# ifdef EXEC_PAGESIZE
-# define malloc_getpagesize EXEC_PAGESIZE
-# else
-# ifdef NBPG
-# ifndef CLSIZE
-# define malloc_getpagesize NBPG
-# else
-# define malloc_getpagesize (NBPG * CLSIZE)
-# endif
-# else
-# ifdef NBPC
-# define malloc_getpagesize NBPC
-# else
-# ifdef PAGESIZE
-# define malloc_getpagesize PAGESIZE
-# else
-# define malloc_getpagesize (4096) /* just guess */
-# endif
-# endif
-# endif
-# endif
-# endif
-# endif
-#endif
-
-
-
-/*
-
- This version of malloc supports the standard SVID/XPG mallinfo
- routine that returns a struct containing the same kind of
- information you can get from malloc_stats. It should work on
- any SVID/XPG compliant system that has a /usr/include/malloc.h
- defining struct mallinfo. (If you'd like to install such a thing
- yourself, cut out the preliminary declarations as described above
- and below and save them in a malloc.h file. But there's no
- compelling reason to bother to do this.)
-
- The main declaration needed is the mallinfo struct that is returned
- (by-copy) by mallinfo(). The SVID/XPG malloinfo struct contains a
- bunch of fields, most of which are not even meaningful in this
- version of malloc. Some of these fields are are instead filled by
- mallinfo() with other numbers that might possibly be of interest.
-
- HAVE_USR_INCLUDE_MALLOC_H should be set if you have a
- /usr/include/malloc.h file that includes a declaration of struct
- mallinfo. If so, it is included; else an SVID2/XPG2 compliant
- version is declared below. These must be precisely the same for
- mallinfo() to work.
-
-*/
-
-/* #define HAVE_USR_INCLUDE_MALLOC_H */
-
-#if HAVE_USR_INCLUDE_MALLOC_H
-# include "/usr/include/malloc.h"
-#else
-# ifdef _LIBC
-# include "malloc.h"
-# else
-# include "ptmalloc.h"
-# endif
-#endif
-
-#include <bp-checks.h>
-
-#ifndef DEFAULT_TRIM_THRESHOLD
-#define DEFAULT_TRIM_THRESHOLD (128 * 1024)
-#endif
-
-/*
- M_TRIM_THRESHOLD is the maximum amount of unused top-most memory
- to keep before releasing via malloc_trim in free().
-
- Automatic trimming is mainly useful in long-lived programs.
- Because trimming via sbrk can be slow on some systems, and can
- sometimes be wasteful (in cases where programs immediately
- afterward allocate more large chunks) the value should be high
- enough so that your overall system performance would improve by
- releasing.
-
- The trim threshold and the mmap control parameters (see below)
- can be traded off with one another. Trimming and mmapping are
- two different ways of releasing unused memory back to the
- system. Between these two, it is often possible to keep
- system-level demands of a long-lived program down to a bare
- minimum. For example, in one test suite of sessions measuring
- the XF86 X server on Linux, using a trim threshold of 128K and a
- mmap threshold of 192K led to near-minimal long term resource
- consumption.
-
- If you are using this malloc in a long-lived program, it should
- pay to experiment with these values. As a rough guide, you
- might set to a value close to the average size of a process
- (program) running on your system. Releasing this much memory
- would allow such a process to run in memory. Generally, it's
- worth it to tune for trimming rather than memory mapping when a
- program undergoes phases where several large chunks are
- allocated and released in ways that can reuse each other's
- storage, perhaps mixed with phases where there are no such
- chunks at all. And in well-behaved long-lived programs,
- controlling release of large blocks via trimming versus mapping
- is usually faster.
-
- However, in most programs, these parameters serve mainly as
- protection against the system-level effects of carrying around
- massive amounts of unneeded memory. Since frequent calls to
- sbrk, mmap, and munmap otherwise degrade performance, the default
- parameters are set to relatively high values that serve only as
- safeguards.
-
- The default trim value is high enough to cause trimming only in
- fairly extreme (by current memory consumption standards) cases.
- It must be greater than page size to have any useful effect. To
- disable trimming completely, you can set to (unsigned long)(-1);
-
-
-*/
-
-
-#ifndef DEFAULT_TOP_PAD
-#define DEFAULT_TOP_PAD (0)
-#endif
-
-/*
- M_TOP_PAD is the amount of extra `padding' space to allocate or
- retain whenever sbrk is called. It is used in two ways internally:
-
- * When sbrk is called to extend the top of the arena to satisfy
- a new malloc request, this much padding is added to the sbrk
- request.
-
- * When malloc_trim is called automatically from free(),
- it is used as the `pad' argument.
-
- In both cases, the actual amount of padding is rounded
- so that the end of the arena is always a system page boundary.
-
- The main reason for using padding is to avoid calling sbrk so
- often. Having even a small pad greatly reduces the likelihood
- that nearly every malloc request during program start-up (or
- after trimming) will invoke sbrk, which needlessly wastes
- time.
-
- Automatic rounding-up to page-size units is normally sufficient
- to avoid measurable overhead, so the default is 0. However, in
- systems where sbrk is relatively slow, it can pay to increase
- this value, at the expense of carrying around more memory than
- the program needs.
-
-*/
-
-
-#ifndef DEFAULT_MMAP_THRESHOLD
-#define DEFAULT_MMAP_THRESHOLD (128 * 1024)
-#endif
-
-/*
-
- M_MMAP_THRESHOLD is the request size threshold for using mmap()
- to service a request. Requests of at least this size that cannot
- be allocated using already-existing space will be serviced via mmap.
- (If enough normal freed space already exists it is used instead.)
-
- Using mmap segregates relatively large chunks of memory so that
- they can be individually obtained and released from the host
- system. A request serviced through mmap is never reused by any
- other request (at least not directly; the system may just so
- happen to remap successive requests to the same locations).
-
- Segregating space in this way has the benefit that mmapped space
- can ALWAYS be individually released back to the system, which
- helps keep the system level memory demands of a long-lived
- program low. Mapped memory can never become `locked' between
- other chunks, as can happen with normally allocated chunks, which
- menas that even trimming via malloc_trim would not release them.
-
- However, it has the disadvantages that:
-
- 1. The space cannot be reclaimed, consolidated, and then
- used to service later requests, as happens with normal chunks.
- 2. It can lead to more wastage because of mmap page alignment
- requirements
- 3. It causes malloc performance to be more dependent on host
- system memory management support routines which may vary in
- implementation quality and may impose arbitrary
- limitations. Generally, servicing a request via normal
- malloc steps is faster than going through a system's mmap.
-
- All together, these considerations should lead you to use mmap
- only for relatively large requests.
-
-
-*/
-
-
-
-#ifndef DEFAULT_MMAP_MAX
-#if HAVE_MMAP
-#define DEFAULT_MMAP_MAX (1024)
-#else
-#define DEFAULT_MMAP_MAX (0)
-#endif
-#endif
-
-/*
- M_MMAP_MAX is the maximum number of requests to simultaneously
- service using mmap. This parameter exists because:
-
- 1. Some systems have a limited number of internal tables for
- use by mmap.
- 2. In most systems, overreliance on mmap can degrade overall
- performance.
- 3. If a program allocates many large regions, it is probably
- better off using normal sbrk-based allocation routines that
- can reclaim and reallocate normal heap memory. Using a
- small value allows transition into this mode after the
- first few allocations.
-
- Setting to 0 disables all use of mmap. If HAVE_MMAP is not set,
- the default value is 0, and attempts to set it to non-zero values
- in mallopt will fail.
-*/
-
-
-
-#ifndef DEFAULT_CHECK_ACTION
-#define DEFAULT_CHECK_ACTION 1
-#endif
-
-/* What to do if the standard debugging hooks are in place and a
- corrupt pointer is detected: do nothing (0), print an error message
- (1), or call abort() (2). */
-
-
-
-#define HEAP_MIN_SIZE (32*1024)
-#define HEAP_MAX_SIZE (1024*1024) /* must be a power of two */
-
-/* HEAP_MIN_SIZE and HEAP_MAX_SIZE limit the size of mmap()ed heaps
- that are dynamically created for multi-threaded programs. The
- maximum size must be a power of two, for fast determination of
- which heap belongs to a chunk. It should be much larger than
- the mmap threshold, so that requests with a size just below that
- threshold can be fulfilled without creating too many heaps.
-*/
-
-
-
-#ifndef THREAD_STATS
-#define THREAD_STATS 0
-#endif
-
-/* If THREAD_STATS is non-zero, some statistics on mutex locking are
- computed. */
-
-
-/* Macro to set errno. */
-#ifndef __set_errno
-# define __set_errno(val) errno = (val)
-#endif
-
-/* On some platforms we can compile internal, not exported functions better.
- Let the environment provide a macro and define it to be empty if it
- is not available. */
-#ifndef internal_function
-# define internal_function
-#endif
-
-
-/*
-
- Special defines for the Linux/GNU C library.
-
-*/
-
-
-#ifdef _LIBC
-
-#if __STD_C
-
-Void_t * __default_morecore (ptrdiff_t);
-Void_t *(*__morecore)(ptrdiff_t) = __default_morecore;
-
-#else
-
-Void_t * __default_morecore ();
-Void_t *(*__morecore)() = __default_morecore;
-
-#endif
-
-#define MORECORE (*__morecore)
-#define MORECORE_FAILURE 0
-
-#ifndef MORECORE_CLEARS
-#define MORECORE_CLEARS 1
-#endif
-
-static size_t __libc_pagesize;
-
-#define access __access
-#define mmap __mmap
-#define munmap __munmap
-#define mremap __mremap
-#define mprotect __mprotect
-#undef malloc_getpagesize
-#define malloc_getpagesize __libc_pagesize
-
-#else /* _LIBC */
-
-#if __STD_C
-extern Void_t* sbrk(ptrdiff_t);
-#else
-extern Void_t* sbrk();
-#endif
-
-#ifndef MORECORE
-#define MORECORE sbrk
-#endif
-
-#ifndef MORECORE_FAILURE
-#define MORECORE_FAILURE -1
-#endif
-
-#ifndef MORECORE_CLEARS
-#define MORECORE_CLEARS 1
-#endif
-
-#endif /* _LIBC */
-
-#ifdef _LIBC
-
-#define cALLOc __libc_calloc
-#define fREe __libc_free
-#define mALLOc __libc_malloc
-#define mEMALIGn __libc_memalign
-#define rEALLOc __libc_realloc
-#define vALLOc __libc_valloc
-#define pvALLOc __libc_pvalloc
-#define mALLINFo __libc_mallinfo
-#define mALLOPt __libc_mallopt
-#define mALLOC_STATs __malloc_stats
-#define mALLOC_USABLE_SIZe __malloc_usable_size
-#define mALLOC_TRIm __malloc_trim
-#define mALLOC_GET_STATe __malloc_get_state
-#define mALLOC_SET_STATe __malloc_set_state
-
-#else
-
-#define cALLOc calloc
-#define fREe free
-#define mALLOc malloc
-#define mEMALIGn memalign
-#define rEALLOc realloc
-#define vALLOc valloc
-#define pvALLOc pvalloc
-#define mALLINFo mallinfo
-#define mALLOPt mallopt
-#define mALLOC_STATs malloc_stats
-#define mALLOC_USABLE_SIZe malloc_usable_size
-#define mALLOC_TRIm malloc_trim
-#define mALLOC_GET_STATe malloc_get_state
-#define mALLOC_SET_STATe malloc_set_state
-
-#endif
-
-/* Public routines */
-
-#if __STD_C
-
-#ifndef _LIBC
-void ptmalloc_init(void);
-#endif
-Void_t* mALLOc(size_t);
-void fREe(Void_t*);
-Void_t* rEALLOc(Void_t*, size_t);
-Void_t* mEMALIGn(size_t, size_t);
-Void_t* vALLOc(size_t);
-Void_t* pvALLOc(size_t);
-Void_t* cALLOc(size_t, size_t);
-void cfree(Void_t*);
-int mALLOC_TRIm(size_t);
-size_t mALLOC_USABLE_SIZe(Void_t*);
-void mALLOC_STATs(void);
-int mALLOPt(int, int);
-struct mallinfo mALLINFo(void);
-Void_t* mALLOC_GET_STATe(void);
-int mALLOC_SET_STATe(Void_t*);
-
-#else /* !__STD_C */
-
-#ifndef _LIBC
-void ptmalloc_init();
-#endif
-Void_t* mALLOc();
-void fREe();
-Void_t* rEALLOc();
-Void_t* mEMALIGn();
-Void_t* vALLOc();
-Void_t* pvALLOc();
-Void_t* cALLOc();
-void cfree();
-int mALLOC_TRIm();
-size_t mALLOC_USABLE_SIZe();
-void mALLOC_STATs();
-int mALLOPt();
-struct mallinfo mALLINFo();
-Void_t* mALLOC_GET_STATe();
-int mALLOC_SET_STATe();
-
-#endif /* __STD_C */
-
-
-#ifdef __cplusplus
-} /* end of extern "C" */
-#endif
-
-#if !defined(NO_THREADS) && !HAVE_MMAP
-"Can't have threads support without mmap"
-#endif
-#if USE_ARENAS && !HAVE_MMAP
-"Can't have multiple arenas without mmap"
-#endif
-
-
-/*
- Type declarations
-*/
-
-
-struct malloc_chunk
-{
- INTERNAL_SIZE_T prev_size; /* Size of previous chunk (if free). */
- INTERNAL_SIZE_T size; /* Size in bytes, including overhead. */
- struct malloc_chunk* fd; /* double links -- used only if free. */
- struct malloc_chunk* bk;
-};
-
-typedef struct malloc_chunk* mchunkptr;
-
-/*
-
- malloc_chunk details:
-
- (The following includes lightly edited explanations by Colin Plumb.)
-
- Chunks of memory are maintained using a `boundary tag' method as
- described in e.g., Knuth or Standish. (See the paper by Paul
- Wilson ftp://ftp.cs.utexas.edu/pub/garbage/allocsrv.ps for a
- survey of such techniques.) Sizes of free chunks are stored both
- in the front of each chunk and at the end. This makes
- consolidating fragmented chunks into bigger chunks very fast. The
- size fields also hold bits representing whether chunks are free or
- in use.
-
- An allocated chunk looks like this:
-
-
- chunk-> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- | Size of previous chunk, if allocated | |
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- | Size of chunk, in bytes |P|
- mem-> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- | User data starts here... .
- . .
- . (malloc_usable_space() bytes) .
- . |
-nextchunk-> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- | Size of chunk |
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-
-
- Where "chunk" is the front of the chunk for the purpose of most of
- the malloc code, but "mem" is the pointer that is returned to the
- user. "Nextchunk" is the beginning of the next contiguous chunk.
-
- Chunks always begin on even word boundaries, so the mem portion
- (which is returned to the user) is also on an even word boundary, and
- thus double-word aligned.
-
- Free chunks are stored in circular doubly-linked lists, and look like this:
-
- chunk-> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- | Size of previous chunk |
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- `head:' | Size of chunk, in bytes |P|
- mem-> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- | Forward pointer to next chunk in list |
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- | Back pointer to previous chunk in list |
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- | Unused space (may be 0 bytes long) .
- . .
- . |
-nextchunk-> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- `foot:' | Size of chunk, in bytes |
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-
- The P (PREV_INUSE) bit, stored in the unused low-order bit of the
- chunk size (which is always a multiple of two words), is an in-use
- bit for the *previous* chunk. If that bit is *clear*, then the
- word before the current chunk size contains the previous chunk
- size, and can be used to find the front of the previous chunk.
- (The very first chunk allocated always has this bit set,
- preventing access to non-existent (or non-owned) memory.)
-
- Note that the `foot' of the current chunk is actually represented
- as the prev_size of the NEXT chunk. (This makes it easier to
- deal with alignments etc).
-
- The two exceptions to all this are
-
- 1. The special chunk `top', which doesn't bother using the
- trailing size field since there is no
- next contiguous chunk that would have to index off it. (After
- initialization, `top' is forced to always exist. If it would
- become less than MINSIZE bytes long, it is replenished via
- malloc_extend_top.)
-
- 2. Chunks allocated via mmap, which have the second-lowest-order
- bit (IS_MMAPPED) set in their size fields. Because they are
- never merged or traversed from any other chunk, they have no
- foot size or inuse information.
-
- Available chunks are kept in any of several places (all declared below):
-
- * `av': An array of chunks serving as bin headers for consolidated
- chunks. Each bin is doubly linked. The bins are approximately
- proportionally (log) spaced. There are a lot of these bins
- (128). This may look excessive, but works very well in
- practice. All procedures maintain the invariant that no
- consolidated chunk physically borders another one. Chunks in
- bins are kept in size order, with ties going to the
- approximately least recently used chunk.
-
- The chunks in each bin are maintained in decreasing sorted order by
- size. This is irrelevant for the small bins, which all contain
- the same-sized chunks, but facilitates best-fit allocation for
- larger chunks. (These lists are just sequential. Keeping them in
- order almost never requires enough traversal to warrant using
- fancier ordered data structures.) Chunks of the same size are
- linked with the most recently freed at the front, and allocations
- are taken from the back. This results in LRU or FIFO allocation
- order, which tends to give each chunk an equal opportunity to be
- consolidated with adjacent freed chunks, resulting in larger free
- chunks and less fragmentation.
-
- * `top': The top-most available chunk (i.e., the one bordering the
- end of available memory) is treated specially. It is never
- included in any bin, is used only if no other chunk is
- available, and is released back to the system if it is very
- large (see M_TRIM_THRESHOLD).
-
- * `last_remainder': A bin holding only the remainder of the
- most recently split (non-top) chunk. This bin is checked
- before other non-fitting chunks, so as to provide better
- locality for runs of sequentially allocated chunks.
-
- * Implicitly, through the host system's memory mapping tables.
- If supported, requests greater than a threshold are usually
- serviced via calls to mmap, and then later released via munmap.
-
-*/
-
-/*
- Bins
-
- The bins are an array of pairs of pointers serving as the
- heads of (initially empty) doubly-linked lists of chunks, laid out
- in a way so that each pair can be treated as if it were in a
- malloc_chunk. (This way, the fd/bk offsets for linking bin heads
- and chunks are the same).
-
- Bins for sizes < 512 bytes contain chunks of all the same size, spaced
- 8 bytes apart. Larger bins are approximately logarithmically
- spaced. (See the table below.)
-
- Bin layout:
-
- 64 bins of size 8
- 32 bins of size 64
- 16 bins of size 512
- 8 bins of size 4096
- 4 bins of size 32768
- 2 bins of size 262144
- 1 bin of size what's left
-
- There is actually a little bit of slop in the numbers in bin_index
- for the sake of speed. This makes no difference elsewhere.
-
- The special chunks `top' and `last_remainder' get their own bins,
- (this is implemented via yet more trickery with the av array),
- although `top' is never properly linked to its bin since it is
- always handled specially.
-
-*/
-
-#define NAV 128 /* number of bins */
-
-typedef struct malloc_chunk* mbinptr;
-
-/* An arena is a configuration of malloc_chunks together with an array
- of bins. With multiple threads, it must be locked via a mutex
- before changing its data structures. One or more `heaps' are
- associated with each arena, except for the main_arena, which is
- associated only with the `main heap', i.e. the conventional free
- store obtained with calls to MORECORE() (usually sbrk). The `av'
- array is never mentioned directly in the code, but instead used via
- bin access macros. */
-
-typedef struct _arena {
- mbinptr av[2*NAV + 2];
- struct _arena *next;
- size_t size;
-#if THREAD_STATS
- long stat_lock_direct, stat_lock_loop, stat_lock_wait;
-#endif
- mutex_t mutex;
-} arena;
-
-
-/* A heap is a single contiguous memory region holding (coalesceable)
- malloc_chunks. It is allocated with mmap() and always starts at an
- address aligned to HEAP_MAX_SIZE. Not used unless compiling with
- USE_ARENAS. */
-
-typedef struct _heap_info {
- arena *ar_ptr; /* Arena for this heap. */
- struct _heap_info *prev; /* Previous heap. */
- size_t size; /* Current size in bytes. */
- size_t pad; /* Make sure the following data is properly aligned. */
-} heap_info;
-
-
-/*
- Static functions (forward declarations)
-*/
-
-#if __STD_C
-
-static void chunk_free(arena *ar_ptr, mchunkptr p) internal_function;
-static mchunkptr chunk_alloc(arena *ar_ptr, INTERNAL_SIZE_T size)
- internal_function;
-static mchunkptr chunk_realloc(arena *ar_ptr, mchunkptr oldp,
- INTERNAL_SIZE_T oldsize, INTERNAL_SIZE_T nb)
- internal_function;
-static mchunkptr chunk_align(arena *ar_ptr, INTERNAL_SIZE_T nb,
- size_t alignment) internal_function;
-static int main_trim(size_t pad) internal_function;
-#if USE_ARENAS
-static int heap_trim(heap_info *heap, size_t pad) internal_function;
-#endif
-#if defined _LIBC || defined MALLOC_HOOKS
-static Void_t* malloc_check(size_t sz, const Void_t *caller);
-static void free_check(Void_t* mem, const Void_t *caller);
-static Void_t* realloc_check(Void_t* oldmem, size_t bytes,
- const Void_t *caller);
-static Void_t* memalign_check(size_t alignment, size_t bytes,
- const Void_t *caller);
-#ifndef NO_THREADS
-static Void_t* malloc_starter(size_t sz, const Void_t *caller);
-static void free_starter(Void_t* mem, const Void_t *caller);
-static Void_t* malloc_atfork(size_t sz, const Void_t *caller);
-static void free_atfork(Void_t* mem, const Void_t *caller);
-#endif
-#endif
-
-#else
-
-static void chunk_free();
-static mchunkptr chunk_alloc();
-static mchunkptr chunk_realloc();
-static mchunkptr chunk_align();
-static int main_trim();
-#if USE_ARENAS
-static int heap_trim();
-#endif
-#if defined _LIBC || defined MALLOC_HOOKS
-static Void_t* malloc_check();
-static void free_check();
-static Void_t* realloc_check();
-static Void_t* memalign_check();
-#ifndef NO_THREADS
-static Void_t* malloc_starter();
-static void free_starter();
-static Void_t* malloc_atfork();
-static void free_atfork();
-#endif
-#endif
-
-#endif
-
-
-
-/* sizes, alignments */
-
-#define SIZE_SZ (sizeof(INTERNAL_SIZE_T))
-/* Allow the default to be overwritten on the compiler command line. */
-#ifndef MALLOC_ALIGNMENT
-# define MALLOC_ALIGNMENT (SIZE_SZ + SIZE_SZ)
-#endif
-#define MALLOC_ALIGN_MASK (MALLOC_ALIGNMENT - 1)
-#define MINSIZE (sizeof(struct malloc_chunk))
-
-/* conversion from malloc headers to user pointers, and back */
-
-#define chunk2mem(p) ((Void_t*)((char*)(p) + 2*SIZE_SZ))
-#define mem2chunk(mem) chunk_at_offset((mem), -2*SIZE_SZ)
-
-/* pad request bytes into a usable size, return non-zero on overflow */
-
-#define request2size(req, nb) \
- ((nb = (req) + (SIZE_SZ + MALLOC_ALIGN_MASK)),\
- ((long)nb <= 0 || nb < (INTERNAL_SIZE_T) (req) \
- ? (__set_errno (ENOMEM), 1) \
- : ((nb < (MINSIZE + MALLOC_ALIGN_MASK) \
- ? (nb = MINSIZE) : (nb &= ~MALLOC_ALIGN_MASK)), 0)))
-
-/* Check if m has acceptable alignment */
-
-#define aligned_OK(m) (((unsigned long)((m)) & (MALLOC_ALIGN_MASK)) == 0)
-
-
-
-
-/*
- Physical chunk operations
-*/
-
-
-/* size field is or'ed with PREV_INUSE when previous adjacent chunk in use */
-
-#define PREV_INUSE 0x1UL
-
-/* size field is or'ed with IS_MMAPPED if the chunk was obtained with mmap() */
-
-#define IS_MMAPPED 0x2UL
-
-/* Bits to mask off when extracting size */
-
-#define SIZE_BITS (PREV_INUSE|IS_MMAPPED)
-
-
-/* Ptr to next physical malloc_chunk. */
-
-#define next_chunk(p) chunk_at_offset((p), (p)->size & ~PREV_INUSE)
-
-/* Ptr to previous physical malloc_chunk */
-
-#define prev_chunk(p) chunk_at_offset((p), -(p)->prev_size)
-
-
-/* Treat space at ptr + offset as a chunk */
-
-#define chunk_at_offset(p, s) BOUNDED_1((mchunkptr)(((char*)(p)) + (s)))
-
-
-
-
-/*
- Dealing with use bits
-*/
-
-/* extract p's inuse bit */
-
-#define inuse(p) (next_chunk(p)->size & PREV_INUSE)
-
-/* extract inuse bit of previous chunk */
-
-#define prev_inuse(p) ((p)->size & PREV_INUSE)
-
-/* check for mmap()'ed chunk */
-
-#define chunk_is_mmapped(p) ((p)->size & IS_MMAPPED)
-
-/* set/clear chunk as in use without otherwise disturbing */
-
-#define set_inuse(p) (next_chunk(p)->size |= PREV_INUSE)
-
-#define clear_inuse(p) (next_chunk(p)->size &= ~PREV_INUSE)
-
-/* check/set/clear inuse bits in known places */
-
-#define inuse_bit_at_offset(p, s) \
- (chunk_at_offset((p), (s))->size & PREV_INUSE)
-
-#define set_inuse_bit_at_offset(p, s) \
- (chunk_at_offset((p), (s))->size |= PREV_INUSE)
-
-#define clear_inuse_bit_at_offset(p, s) \
- (chunk_at_offset((p), (s))->size &= ~(PREV_INUSE))
-
-
-
-
-/*
- Dealing with size fields
-*/
-
-/* Get size, ignoring use bits */
-
-#define chunksize(p) ((p)->size & ~(SIZE_BITS))
-
-/* Set size at head, without disturbing its use bit */
-
-#define set_head_size(p, s) ((p)->size = (((p)->size & PREV_INUSE) | (s)))
-
-/* Set size/use ignoring previous bits in header */
-
-#define set_head(p, s) ((p)->size = (s))
-
-/* Set size at footer (only when chunk is not in use) */
-
-#define set_foot(p, s) (chunk_at_offset(p, s)->prev_size = (s))
-
-
-
-
-
-/* access macros */
-
-#define bin_at(a, i) BOUNDED_1(_bin_at(a, i))
-#define _bin_at(a, i) ((mbinptr)((char*)&(((a)->av)[2*(i)+2]) - 2*SIZE_SZ))
-#define init_bin(a, i) ((a)->av[2*(i)+2] = (a)->av[2*(i)+3] = bin_at((a), (i)))
-#define next_bin(b) ((mbinptr)((char*)(b) + 2 * sizeof(((arena*)0)->av[0])))
-#define prev_bin(b) ((mbinptr)((char*)(b) - 2 * sizeof(((arena*)0)->av[0])))
-
-/*
- The first 2 bins are never indexed. The corresponding av cells are instead
- used for bookkeeping. This is not to save space, but to simplify
- indexing, maintain locality, and avoid some initialization tests.
-*/
-
-#define binblocks(a) (bin_at(a,0)->size)/* bitvector of nonempty blocks */
-#define top(a) (bin_at(a,0)->fd) /* The topmost chunk */
-#define last_remainder(a) (bin_at(a,1)) /* remainder from last split */
-
-/*
- Because top initially points to its own bin with initial
- zero size, thus forcing extension on the first malloc request,
- we avoid having any special code in malloc to check whether
- it even exists yet. But we still need to in malloc_extend_top.
-*/
-
-#define initial_top(a) ((mchunkptr)bin_at(a, 0))
-
-
-
-/* field-extraction macros */
-
-#define first(b) ((b)->fd)
-#define last(b) ((b)->bk)
-
-/*
- Indexing into bins
-*/
-
-#define bin_index(sz) \
-(((((unsigned long)(sz)) >> 9) == 0) ? (((unsigned long)(sz)) >> 3):\
- ((((unsigned long)(sz)) >> 9) <= 4) ? 56 + (((unsigned long)(sz)) >> 6):\
- ((((unsigned long)(sz)) >> 9) <= 20) ? 91 + (((unsigned long)(sz)) >> 9):\
- ((((unsigned long)(sz)) >> 9) <= 84) ? 110 + (((unsigned long)(sz)) >> 12):\
- ((((unsigned long)(sz)) >> 9) <= 340) ? 119 + (((unsigned long)(sz)) >> 15):\
- ((((unsigned long)(sz)) >> 9) <= 1364) ? 124 + (((unsigned long)(sz)) >> 18):\
- 126)
-/*
- bins for chunks < 512 are all spaced 8 bytes apart, and hold
- identically sized chunks. This is exploited in malloc.
-*/
-
-#define MAX_SMALLBIN 63
-#define MAX_SMALLBIN_SIZE 512
-#define SMALLBIN_WIDTH 8
-
-#define smallbin_index(sz) (((unsigned long)(sz)) >> 3)
-
-/*
- Requests are `small' if both the corresponding and the next bin are small
-*/
-
-#define is_small_request(nb) ((nb) < MAX_SMALLBIN_SIZE - SMALLBIN_WIDTH)
-
-
-
-/*
- To help compensate for the large number of bins, a one-level index
- structure is used for bin-by-bin searching. `binblocks' is a
- one-word bitvector recording whether groups of BINBLOCKWIDTH bins
- have any (possibly) non-empty bins, so they can be skipped over
- all at once during during traversals. The bits are NOT always
- cleared as soon as all bins in a block are empty, but instead only
- when all are noticed to be empty during traversal in malloc.
-*/
-
-#define BINBLOCKWIDTH 4 /* bins per block */
-
-/* bin<->block macros */
-
-#define idx2binblock(ix) ((unsigned)1 << ((ix) / BINBLOCKWIDTH))
-#define mark_binblock(a, ii) (binblocks(a) |= idx2binblock(ii))
-#define clear_binblock(a, ii) (binblocks(a) &= ~(idx2binblock(ii)))
-
-
-
-
-/* Static bookkeeping data */
-
-/* Helper macro to initialize bins */
-#define IAV(i) _bin_at(&main_arena, i), _bin_at(&main_arena, i)
-
-static arena main_arena = {
- {
- 0, 0,
- IAV(0), IAV(1), IAV(2), IAV(3), IAV(4), IAV(5), IAV(6), IAV(7),
- IAV(8), IAV(9), IAV(10), IAV(11), IAV(12), IAV(13), IAV(14), IAV(15),
- IAV(16), IAV(17), IAV(18), IAV(19), IAV(20), IAV(21), IAV(22), IAV(23),
- IAV(24), IAV(25), IAV(26), IAV(27), IAV(28), IAV(29), IAV(30), IAV(31),
- IAV(32), IAV(33), IAV(34), IAV(35), IAV(36), IAV(37), IAV(38), IAV(39),
- IAV(40), IAV(41), IAV(42), IAV(43), IAV(44), IAV(45), IAV(46), IAV(47),
- IAV(48), IAV(49), IAV(50), IAV(51), IAV(52), IAV(53), IAV(54), IAV(55),
- IAV(56), IAV(57), IAV(58), IAV(59), IAV(60), IAV(61), IAV(62), IAV(63),
- IAV(64), IAV(65), IAV(66), IAV(67), IAV(68), IAV(69), IAV(70), IAV(71),
- IAV(72), IAV(73), IAV(74), IAV(75), IAV(76), IAV(77), IAV(78), IAV(79),
- IAV(80), IAV(81), IAV(82), IAV(83), IAV(84), IAV(85), IAV(86), IAV(87),
- IAV(88), IAV(89), IAV(90), IAV(91), IAV(92), IAV(93), IAV(94), IAV(95),
- IAV(96), IAV(97), IAV(98), IAV(99), IAV(100), IAV(101), IAV(102), IAV(103),
- IAV(104), IAV(105), IAV(106), IAV(107), IAV(108), IAV(109), IAV(110), IAV(111),
- IAV(112), IAV(113), IAV(114), IAV(115), IAV(116), IAV(117), IAV(118), IAV(119),
- IAV(120), IAV(121), IAV(122), IAV(123), IAV(124), IAV(125), IAV(126), IAV(127)
- },
- &main_arena, /* next */
- 0, /* size */
-#if THREAD_STATS
- 0, 0, 0, /* stat_lock_direct, stat_lock_loop, stat_lock_wait */
-#endif
- MUTEX_INITIALIZER /* mutex */
-};
-
-#undef IAV
-
-/* Thread specific data */
-
-static tsd_key_t arena_key;
-static mutex_t list_lock = MUTEX_INITIALIZER;
-
-#if THREAD_STATS
-static int stat_n_heaps;
-#define THREAD_STAT(x) x
-#else
-#define THREAD_STAT(x) do ; while(0)
-#endif
-
-/* variables holding tunable values */
-
-static unsigned long trim_threshold = DEFAULT_TRIM_THRESHOLD;
-static unsigned long top_pad = DEFAULT_TOP_PAD;
-static unsigned int n_mmaps_max = DEFAULT_MMAP_MAX;
-static unsigned long mmap_threshold = DEFAULT_MMAP_THRESHOLD;
-static int check_action = DEFAULT_CHECK_ACTION;
-
-/* The first value returned from sbrk */
-static char* sbrk_base = (char*)(-1);
-
-/* The maximum memory obtained from system via sbrk */
-static unsigned long max_sbrked_mem;
-
-/* The maximum via either sbrk or mmap (too difficult to track with threads) */
-#ifdef NO_THREADS
-static unsigned long max_total_mem;
-#endif
-
-/* The total memory obtained from system via sbrk */
-#define sbrked_mem (main_arena.size)
-
-/* Tracking mmaps */
-
-static unsigned int n_mmaps;
-static unsigned int max_n_mmaps;
-static unsigned long mmapped_mem;
-static unsigned long max_mmapped_mem;
-
-/* Mapped memory in non-main arenas (reliable only for NO_THREADS). */
-static unsigned long arena_mem;
-
-
-
-#ifndef _LIBC
-#define weak_variable
-#else
-/* In GNU libc we want the hook variables to be weak definitions to
- avoid a problem with Emacs. */
-#define weak_variable weak_function
-#endif
-
-/* Already initialized? */
-int __malloc_initialized = -1;
-
-
-#ifndef NO_THREADS
-
-/* Magic value for the thread-specific arena pointer when
- malloc_atfork() is in use. */
-
-#define ATFORK_ARENA_PTR ((Void_t*)-1)
-
-/* The following two functions are registered via thread_atfork() to
- make sure that the mutexes remain in a consistent state in the
- fork()ed version of a thread. Also adapt the malloc and free hooks
- temporarily, because the `atfork' handler mechanism may use
- malloc/free internally (e.g. in LinuxThreads). */
-
-#if defined _LIBC || defined MALLOC_HOOKS
-static __malloc_ptr_t (*save_malloc_hook) __MALLOC_P ((size_t __size,
- const __malloc_ptr_t));
-static void (*save_free_hook) __MALLOC_P ((__malloc_ptr_t __ptr,
- const __malloc_ptr_t));
-static Void_t* save_arena;
-#endif
-
-static void
-ptmalloc_lock_all __MALLOC_P((void))
-{
- arena *ar_ptr;
-
- (void)mutex_lock(&list_lock);
- for(ar_ptr = &main_arena;;) {
- (void)mutex_lock(&ar_ptr->mutex);
- ar_ptr = ar_ptr->next;
- if(ar_ptr == &main_arena) break;
- }
-#if defined _LIBC || defined MALLOC_HOOKS
- save_malloc_hook = __malloc_hook;
- save_free_hook = __free_hook;
- __malloc_hook = malloc_atfork;
- __free_hook = free_atfork;
- /* Only the current thread may perform malloc/free calls now. */
- tsd_getspecific(arena_key, save_arena);
- tsd_setspecific(arena_key, ATFORK_ARENA_PTR);
-#endif
-}
-
-static void
-ptmalloc_unlock_all __MALLOC_P((void))
-{
- arena *ar_ptr;
-
-#if defined _LIBC || defined MALLOC_HOOKS
- tsd_setspecific(arena_key, save_arena);
- __malloc_hook = save_malloc_hook;
- __free_hook = save_free_hook;
-#endif
- for(ar_ptr = &main_arena;;) {
- (void)mutex_unlock(&ar_ptr->mutex);
- ar_ptr = ar_ptr->next;
- if(ar_ptr == &main_arena) break;
- }
- (void)mutex_unlock(&list_lock);
-}
-
-static void
-ptmalloc_init_all __MALLOC_P((void))
-{
- arena *ar_ptr;
-
-#if defined _LIBC || defined MALLOC_HOOKS
- tsd_setspecific(arena_key, save_arena);
- __malloc_hook = save_malloc_hook;
- __free_hook = save_free_hook;
-#endif
- for(ar_ptr = &main_arena;;) {
- (void)mutex_init(&ar_ptr->mutex);
- ar_ptr = ar_ptr->next;
- if(ar_ptr == &main_arena) break;
- }
- (void)mutex_init(&list_lock);
-}
-
-#endif /* !defined NO_THREADS */
-
-/* Initialization routine. */
-#if defined(_LIBC)
-#if 0
-static void ptmalloc_init __MALLOC_P ((void)) __attribute__ ((constructor));
-#endif
-
-#ifdef _LIBC
-#include <string.h>
-extern char **environ;
-
-static char *
-internal_function
-next_env_entry (char ***position)
-{
- char **current = *position;
- char *result = NULL;
-
- while (*current != NULL)
- {
- if (__builtin_expect ((*current)[0] == 'M', 0)
- && (*current)[1] == 'A'
- && (*current)[2] == 'L'
- && (*current)[3] == 'L'
- && (*current)[4] == 'O'
- && (*current)[5] == 'C'
- && (*current)[6] == '_')
- {
- result = &(*current)[7];
-
- /* Save current position for next visit. */
- *position = ++current;
-
- break;
- }
-
- ++current;
- }
-
- return result;
-}
-#endif
-
-static void
-ptmalloc_init __MALLOC_P((void))
-#else
-void
-ptmalloc_init __MALLOC_P((void))
-#endif
-{
-#if defined _LIBC || defined MALLOC_HOOKS
-# if __STD_C
- const char* s;
-# else
- char* s;
-# endif
-#endif
- int secure;
-
- if(__malloc_initialized >= 0) return;
- __malloc_initialized = 0;
-#ifdef _LIBC
- __libc_pagesize = __getpagesize();
-#endif
-#ifndef NO_THREADS
-#if defined _LIBC || defined MALLOC_HOOKS
- /* With some threads implementations, creating thread-specific data
- or initializing a mutex may call malloc() itself. Provide a
- simple starter version (realloc() won't work). */
- save_malloc_hook = __malloc_hook;
- save_free_hook = __free_hook;
- __malloc_hook = malloc_starter;
- __free_hook = free_starter;
-#endif
-#ifdef _LIBC
- /* Initialize the pthreads interface. */
- if (__pthread_initialize != NULL)
- __pthread_initialize();
-#endif
-#endif /* !defined NO_THREADS */
- mutex_init(&main_arena.mutex);
- mutex_init(&list_lock);
- tsd_key_create(&arena_key, NULL);
- tsd_setspecific(arena_key, (Void_t *)&main_arena);
- thread_atfork(ptmalloc_lock_all, ptmalloc_unlock_all, ptmalloc_init_all);
-#if defined _LIBC || defined MALLOC_HOOKS
-#ifndef NO_THREADS
- __malloc_hook = save_malloc_hook;
- __free_hook = save_free_hook;
-#endif
- secure = __libc_enable_secure;
-#ifdef _LIBC
- s = NULL;
- if (environ != NULL)
- {
- char **runp = environ;
- char *envline;
-
- while (__builtin_expect ((envline = next_env_entry (&runp)) != NULL, 0))
- {
- size_t len = strcspn (envline, "=");
-
- if (envline[len] != '=')
- /* This is a "MALLOC_" variable at the end of the string
- without a '=' character. Ignore it since otherwise we
- will access invalid memory below. */
- continue;
-
- switch (len)
- {
- case 6:
- if (memcmp (envline, "CHECK_", 6) == 0)
- s = &envline[7];
- break;
- case 8:
- if (! secure && memcmp (envline, "TOP_PAD_", 8) == 0)
- mALLOPt(M_TOP_PAD, atoi(&envline[9]));
- break;
- case 9:
- if (! secure && memcmp (envline, "MMAP_MAX_", 9) == 0)
- mALLOPt(M_MMAP_MAX, atoi(&envline[10]));
- break;
- case 15:
- if (! secure)
- {
- if (memcmp (envline, "TRIM_THRESHOLD_", 15) == 0)
- mALLOPt(M_TRIM_THRESHOLD, atoi(&envline[16]));
- else if (memcmp (envline, "MMAP_THRESHOLD_", 15) == 0)
- mALLOPt(M_MMAP_THRESHOLD, atoi(&envline[16]));
- }
- break;
- default:
- break;
- }
- }
- }
-#else
- if (! secure)
- {
- if((s = getenv("MALLOC_TRIM_THRESHOLD_")))
- mALLOPt(M_TRIM_THRESHOLD, atoi(s));
- if((s = getenv("MALLOC_TOP_PAD_")))
- mALLOPt(M_TOP_PAD, atoi(s));
- if((s = getenv("MALLOC_MMAP_THRESHOLD_")))
- mALLOPt(M_MMAP_THRESHOLD, atoi(s));
- if((s = getenv("MALLOC_MMAP_MAX_")))
- mALLOPt(M_MMAP_MAX, atoi(s));
- }
- s = getenv("MALLOC_CHECK_");
-#endif
- if(s) {
- if(s[0]) mALLOPt(M_CHECK_ACTION, (int)(s[0] - '0'));
- __malloc_check_init();
- }
- if(__malloc_initialize_hook != NULL)
- (*__malloc_initialize_hook)();
-#endif
- __malloc_initialized = 1;
-}
-
-/* There are platforms (e.g. Hurd) with a link-time hook mechanism. */
-#ifdef thread_atfork_static
-thread_atfork_static(ptmalloc_lock_all, ptmalloc_unlock_all, \
- ptmalloc_init_all)
-#endif
-
-#if defined _LIBC || defined MALLOC_HOOKS
-
-/* Hooks for debugging versions. The initial hooks just call the
- initialization routine, then do the normal work. */
-
-static Void_t*
-#if __STD_C
-malloc_hook_ini(size_t sz, const __malloc_ptr_t caller)
-#else
-malloc_hook_ini(sz, caller)
- size_t sz; const __malloc_ptr_t caller;
-#endif
-{
- __malloc_hook = NULL;
- ptmalloc_init();
- return mALLOc(sz);
-}
-
-static Void_t*
-#if __STD_C
-realloc_hook_ini(Void_t* ptr, size_t sz, const __malloc_ptr_t caller)
-#else
-realloc_hook_ini(ptr, sz, caller)
- Void_t* ptr; size_t sz; const __malloc_ptr_t caller;
-#endif
-{
- __malloc_hook = NULL;
- __realloc_hook = NULL;
- ptmalloc_init();
- return rEALLOc(ptr, sz);
-}
-
-static Void_t*
-#if __STD_C
-memalign_hook_ini(size_t alignment, size_t sz, const __malloc_ptr_t caller)
-#else
-memalign_hook_ini(alignment, sz, caller)
- size_t alignment; size_t sz; const __malloc_ptr_t caller;
-#endif
-{
- __memalign_hook = NULL;
- ptmalloc_init();
- return mEMALIGn(alignment, sz);
-}
-
-void weak_variable (*__malloc_initialize_hook) __MALLOC_P ((void)) = NULL;
-void weak_variable (*__free_hook) __MALLOC_P ((__malloc_ptr_t __ptr,
- const __malloc_ptr_t)) = NULL;
-__malloc_ptr_t weak_variable (*__malloc_hook)
- __MALLOC_P ((size_t __size, const __malloc_ptr_t)) = malloc_hook_ini;
-__malloc_ptr_t weak_variable (*__realloc_hook)
- __MALLOC_P ((__malloc_ptr_t __ptr, size_t __size, const __malloc_ptr_t))
- = realloc_hook_ini;
-__malloc_ptr_t weak_variable (*__memalign_hook)
- __MALLOC_P ((size_t __alignment, size_t __size, const __malloc_ptr_t))
- = memalign_hook_ini;
-void weak_variable (*__after_morecore_hook) __MALLOC_P ((void)) = NULL;
-
-/* Whether we are using malloc checking. */
-static int using_malloc_checking;
-
-/* A flag that is set by malloc_set_state, to signal that malloc checking
- must not be enabled on the request from the user (via the MALLOC_CHECK_
- environment variable). It is reset by __malloc_check_init to tell
- malloc_set_state that the user has requested malloc checking.
-
- The purpose of this flag is to make sure that malloc checking is not
- enabled when the heap to be restored was constructed without malloc
- checking, and thus does not contain the required magic bytes.
- Otherwise the heap would be corrupted by calls to free and realloc. If
- it turns out that the heap was created with malloc checking and the
- user has requested it malloc_set_state just calls __malloc_check_init
- again to enable it. On the other hand, reusing such a heap without
- further malloc checking is safe. */
-static int disallow_malloc_check;
-
-/* Activate a standard set of debugging hooks. */
-void
-__malloc_check_init()
-{
- if (disallow_malloc_check) {
- disallow_malloc_check = 0;
- return;
- }
- using_malloc_checking = 1;
- __malloc_hook = malloc_check;
- __free_hook = free_check;
- __realloc_hook = realloc_check;
- __memalign_hook = memalign_check;
- if(check_action & 1)
- fprintf(stderr, "malloc: using debugging hooks\n");
-}
-
-#endif
-
-
-
-
-
-/* Routines dealing with mmap(). */
-
-#if HAVE_MMAP
-
-#ifndef MAP_ANONYMOUS
-
-static int dev_zero_fd = -1; /* Cached file descriptor for /dev/zero. */
-
-#define MMAP(addr, size, prot, flags) ((dev_zero_fd < 0) ? \
- (dev_zero_fd = open("/dev/zero", O_RDWR), \
- mmap((addr), (size), (prot), (flags), dev_zero_fd, 0)) : \
- mmap((addr), (size), (prot), (flags), dev_zero_fd, 0))
-
-#else
-
-#define MMAP(addr, size, prot, flags) \
- (mmap((addr), (size), (prot), (flags)|MAP_ANONYMOUS, -1, 0))
-
-#endif
-
-#if defined __GNUC__ && __GNUC__ >= 2
-/* This function is only called from one place, inline it. */
-__inline__
-#endif
-static mchunkptr
-internal_function
-#if __STD_C
-mmap_chunk(size_t size)
-#else
-mmap_chunk(size) size_t size;
-#endif
-{
- size_t page_mask = malloc_getpagesize - 1;
- mchunkptr p;
-
- /* For mmapped chunks, the overhead is one SIZE_SZ unit larger, because
- * there is no following chunk whose prev_size field could be used.
- */
- size = (size + SIZE_SZ + page_mask) & ~page_mask;
-
- p = (mchunkptr)MMAP(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE);
- if(p == (mchunkptr) MAP_FAILED) return 0;
-
- n_mmaps++;
- if (n_mmaps > max_n_mmaps) max_n_mmaps = n_mmaps;
-
- /* We demand that eight bytes into a page must be 8-byte aligned. */
- assert(aligned_OK(chunk2mem(p)));
-
- /* The offset to the start of the mmapped region is stored
- * in the prev_size field of the chunk; normally it is zero,
- * but that can be changed in memalign().
- */
- p->prev_size = 0;
- set_head(p, size|IS_MMAPPED);
-
- mmapped_mem += size;
- if ((unsigned long)mmapped_mem > (unsigned long)max_mmapped_mem)
- max_mmapped_mem = mmapped_mem;
-#ifdef NO_THREADS
- if ((unsigned long)(mmapped_mem + arena_mem + sbrked_mem) > max_total_mem)
- max_total_mem = mmapped_mem + arena_mem + sbrked_mem;
-#endif
- return p;
-}
-
-static void
-internal_function
-#if __STD_C
-munmap_chunk(mchunkptr p)
-#else
-munmap_chunk(p) mchunkptr p;
-#endif
-{
- INTERNAL_SIZE_T size = chunksize(p);
- int ret;
-
- assert (chunk_is_mmapped(p));
- assert(! ((char*)p >= sbrk_base && (char*)p < sbrk_base + sbrked_mem));
- assert((n_mmaps > 0));
- assert(((p->prev_size + size) & (malloc_getpagesize-1)) == 0);
-
- n_mmaps--;
- mmapped_mem -= (size + p->prev_size);
-
- ret = munmap((char *)p - p->prev_size, size + p->prev_size);
-
- /* munmap returns non-zero on failure */
- assert(ret == 0);
-}
-
-#if HAVE_MREMAP
-
-static mchunkptr
-internal_function
-#if __STD_C
-mremap_chunk(mchunkptr p, size_t new_size)
-#else
-mremap_chunk(p, new_size) mchunkptr p; size_t new_size;
-#endif
-{
- size_t page_mask = malloc_getpagesize - 1;
- INTERNAL_SIZE_T offset = p->prev_size;
- INTERNAL_SIZE_T size = chunksize(p);
- char *cp;
-
- assert (chunk_is_mmapped(p));
- assert(! ((char*)p >= sbrk_base && (char*)p < sbrk_base + sbrked_mem));
- assert((n_mmaps > 0));
- assert(((size + offset) & (malloc_getpagesize-1)) == 0);
-
- /* Note the extra SIZE_SZ overhead as in mmap_chunk(). */
- new_size = (new_size + offset + SIZE_SZ + page_mask) & ~page_mask;
-
- cp = (char *)mremap((char *)p - offset, size + offset, new_size,
- MREMAP_MAYMOVE);
-
- if (cp == MAP_FAILED) return 0;
-
- p = (mchunkptr)(cp + offset);
-
- assert(aligned_OK(chunk2mem(p)));
-
- assert((p->prev_size == offset));
- set_head(p, (new_size - offset)|IS_MMAPPED);
-
- mmapped_mem -= size + offset;
- mmapped_mem += new_size;
- if ((unsigned long)mmapped_mem > (unsigned long)max_mmapped_mem)
- max_mmapped_mem = mmapped_mem;
-#ifdef NO_THREADS
- if ((unsigned long)(mmapped_mem + arena_mem + sbrked_mem) > max_total_mem)
- max_total_mem = mmapped_mem + arena_mem + sbrked_mem;
-#endif
- return p;
-}
-
-#endif /* HAVE_MREMAP */
-
-#endif /* HAVE_MMAP */
-
-
-
-/* Managing heaps and arenas (for concurrent threads) */
-
-#if USE_ARENAS
-
-/* Create a new heap. size is automatically rounded up to a multiple
- of the page size. */
-
-static heap_info *
-internal_function
-#if __STD_C
-new_heap(size_t size)
-#else
-new_heap(size) size_t size;
-#endif
-{
- size_t page_mask = malloc_getpagesize - 1;
- char *p1, *p2;
- unsigned long ul;
- heap_info *h;
-
- if(size+top_pad < HEAP_MIN_SIZE)
- size = HEAP_MIN_SIZE;
- else if(size+top_pad <= HEAP_MAX_SIZE)
- size += top_pad;
- else if(size > HEAP_MAX_SIZE)
- return 0;
- else
- size = HEAP_MAX_SIZE;
- size = (size + page_mask) & ~page_mask;
-
- /* A memory region aligned to a multiple of HEAP_MAX_SIZE is needed.
- No swap space needs to be reserved for the following large
- mapping (on Linux, this is the case for all non-writable mappings
- anyway). */
- p1 = (char *)MMAP(0, HEAP_MAX_SIZE<<1, PROT_NONE, MAP_PRIVATE|MAP_NORESERVE);
- if(p1 != MAP_FAILED) {
- p2 = (char *)(((unsigned long)p1 + (HEAP_MAX_SIZE-1)) & ~(HEAP_MAX_SIZE-1));
- ul = p2 - p1;
- if (ul)
- munmap(p1, ul);
- munmap(p2 + HEAP_MAX_SIZE, HEAP_MAX_SIZE - ul);
- } else {
- /* Try to take the chance that an allocation of only HEAP_MAX_SIZE
- is already aligned. */
- p2 = (char *)MMAP(0, HEAP_MAX_SIZE, PROT_NONE, MAP_PRIVATE|MAP_NORESERVE);
- if(p2 == MAP_FAILED)
- return 0;
- if((unsigned long)p2 & (HEAP_MAX_SIZE-1)) {
- munmap(p2, HEAP_MAX_SIZE);
- return 0;
- }
- }
- if(MMAP(p2, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED)
- == (char *) MAP_FAILED) {
- munmap(p2, HEAP_MAX_SIZE);
- return 0;
- }
- h = (heap_info *)p2;
- h->size = size;
- THREAD_STAT(stat_n_heaps++);
- return h;
-}
-
-/* Grow or shrink a heap. size is automatically rounded up to a
- multiple of the page size if it is positive. */
-
-static int
-#if __STD_C
-grow_heap(heap_info *h, long diff)
-#else
-grow_heap(h, diff) heap_info *h; long diff;
-#endif
-{
- size_t page_mask = malloc_getpagesize - 1;
- long new_size;
-
- if(diff >= 0) {
- diff = (diff + page_mask) & ~page_mask;
- new_size = (long)h->size + diff;
- if(new_size > HEAP_MAX_SIZE)
- return -1;
- if(MMAP((char *)h + h->size, diff, PROT_READ|PROT_WRITE,
- MAP_PRIVATE|MAP_FIXED) == (char *) MAP_FAILED)
- return -2;
- } else {
- new_size = (long)h->size + diff;
- if(new_size < (long)sizeof(*h))
- return -1;
- /* Try to re-map the extra heap space freshly to save memory, and
- make it inaccessible. */
- if((char *)MMAP((char *)h + new_size, -diff, PROT_NONE,
- MAP_PRIVATE|MAP_FIXED) == (char *) MAP_FAILED)
- return -2;
- }
- h->size = new_size;
- return 0;
-}
-
-/* Delete a heap. */
-
-#define delete_heap(heap) munmap((char*)(heap), HEAP_MAX_SIZE)
-
-/* arena_get() acquires an arena and locks the corresponding mutex.
- First, try the one last locked successfully by this thread. (This
- is the common case and handled with a macro for speed.) Then, loop
- once over the circularly linked list of arenas. If no arena is
- readily available, create a new one. In this latter case, `size'
- is just a hint as to how much memory will be required immediately
- in the new arena. */
-
-#define arena_get(ptr, size) do { \
- Void_t *vptr = NULL; \
- ptr = (arena *)tsd_getspecific(arena_key, vptr); \
- if(ptr && !mutex_trylock(&ptr->mutex)) { \
- THREAD_STAT(++(ptr->stat_lock_direct)); \
- } else \
- ptr = arena_get2(ptr, (size)); \
-} while(0)
-
-static arena *
-internal_function
-#if __STD_C
-arena_get2(arena *a_tsd, size_t size)
-#else
-arena_get2(a_tsd, size) arena *a_tsd; size_t size;
-#endif
-{
- arena *a;
- heap_info *h;
- char *ptr;
- int i;
- unsigned long misalign;
-
- if(!a_tsd)
- a = a_tsd = &main_arena;
- else {
- a = a_tsd->next;
- if(!a) {
- /* This can only happen while initializing the new arena. */
- (void)mutex_lock(&main_arena.mutex);
- THREAD_STAT(++(main_arena.stat_lock_wait));
- return &main_arena;
- }
- }
-
- /* Check the global, circularly linked list for available arenas. */
- repeat:
- do {
- if(!mutex_trylock(&a->mutex)) {
- THREAD_STAT(++(a->stat_lock_loop));
- tsd_setspecific(arena_key, (Void_t *)a);
- return a;
- }
- a = a->next;
- } while(a != a_tsd);
-
- /* If not even the list_lock can be obtained, try again. This can
- happen during `atfork', or for example on systems where thread
- creation makes it temporarily impossible to obtain _any_
- locks. */
- if(mutex_trylock(&list_lock)) {
- a = a_tsd;
- goto repeat;
- }
- (void)mutex_unlock(&list_lock);
-
- /* Nothing immediately available, so generate a new arena. */
- h = new_heap(size + (sizeof(*h) + sizeof(*a) + MALLOC_ALIGNMENT));
- if(!h) {
- /* Maybe size is too large to fit in a single heap. So, just try
- to create a minimally-sized arena and let chunk_alloc() attempt
- to deal with the large request via mmap_chunk(). */
- h = new_heap(sizeof(*h) + sizeof(*a) + MALLOC_ALIGNMENT);
- if(!h)
- return 0;
- }
- a = h->ar_ptr = (arena *)(h+1);
- for(i=0; i<NAV; i++)
- init_bin(a, i);
- a->next = NULL;
- a->size = h->size;
- arena_mem += h->size;
-#ifdef NO_THREADS
- if((unsigned long)(mmapped_mem + arena_mem + sbrked_mem) > max_total_mem)
- max_total_mem = mmapped_mem + arena_mem + sbrked_mem;
-#endif
- tsd_setspecific(arena_key, (Void_t *)a);
- mutex_init(&a->mutex);
- i = mutex_lock(&a->mutex); /* remember result */
-
- /* Set up the top chunk, with proper alignment. */
- ptr = (char *)(a + 1);
- misalign = (unsigned long)chunk2mem(ptr) & MALLOC_ALIGN_MASK;
- if (misalign > 0)
- ptr += MALLOC_ALIGNMENT - misalign;
- top(a) = (mchunkptr)ptr;
- set_head(top(a), (((char*)h + h->size) - ptr) | PREV_INUSE);
-
- /* Add the new arena to the list. */
- (void)mutex_lock(&list_lock);
- a->next = main_arena.next;
- main_arena.next = a;
- (void)mutex_unlock(&list_lock);
-
- if(i) /* locking failed; keep arena for further attempts later */
- return 0;
-
- THREAD_STAT(++(a->stat_lock_loop));
- return a;
-}
-
-/* find the heap and corresponding arena for a given ptr */
-
-#define heap_for_ptr(ptr) \
- ((heap_info *)((unsigned long)(ptr) & ~(HEAP_MAX_SIZE-1)))
-#define arena_for_ptr(ptr) \
- (((mchunkptr)(ptr) < top(&main_arena) && (char *)(ptr) >= sbrk_base) ? \
- &main_arena : heap_for_ptr(ptr)->ar_ptr)
-
-#else /* !USE_ARENAS */
-
-/* There is only one arena, main_arena. */
-
-#define arena_get(ptr, sz) (ptr = &main_arena)
-#define arena_for_ptr(ptr) (&main_arena)
-
-#endif /* USE_ARENAS */
-
-
-
-/*
- Debugging support
-*/
-
-#if MALLOC_DEBUG
-
-
-/*
- These routines make a number of assertions about the states
- of data structures that should be true at all times. If any
- are not true, it's very likely that a user program has somehow
- trashed memory. (It's also possible that there is a coding error
- in malloc. In which case, please report it!)
-*/
-
-#if __STD_C
-static void do_check_chunk(arena *ar_ptr, mchunkptr p)
-#else
-static void do_check_chunk(ar_ptr, p) arena *ar_ptr; mchunkptr p;
-#endif
-{
- INTERNAL_SIZE_T sz = p->size & ~PREV_INUSE;
-
- /* No checkable chunk is mmapped */
- assert(!chunk_is_mmapped(p));
-
-#if USE_ARENAS
- if(ar_ptr != &main_arena) {
- heap_info *heap = heap_for_ptr(p);
- assert(heap->ar_ptr == ar_ptr);
- if(p != top(ar_ptr))
- assert((char *)p + sz <= (char *)heap + heap->size);
- else
- assert((char *)p + sz == (char *)heap + heap->size);
- return;
- }
-#endif
-
- /* Check for legal address ... */
- assert((char*)p >= sbrk_base);
- if (p != top(ar_ptr))
- assert((char*)p + sz <= (char*)top(ar_ptr));
- else
- assert((char*)p + sz <= sbrk_base + sbrked_mem);
-
-}
-
-
-#if __STD_C
-static void do_check_free_chunk(arena *ar_ptr, mchunkptr p)
-#else
-static void do_check_free_chunk(ar_ptr, p) arena *ar_ptr; mchunkptr p;
-#endif
-{
- INTERNAL_SIZE_T sz = p->size & ~PREV_INUSE;
- mchunkptr next = chunk_at_offset(p, sz);
-
- do_check_chunk(ar_ptr, p);
-
- /* Check whether it claims to be free ... */
- assert(!inuse(p));
-
- /* Must have OK size and fields */
- assert((long)sz >= (long)MINSIZE);
- assert((sz & MALLOC_ALIGN_MASK) == 0);
- assert(aligned_OK(chunk2mem(p)));
- /* ... matching footer field */
- assert(next->prev_size == sz);
- /* ... and is fully consolidated */
- assert(prev_inuse(p));
- assert (next == top(ar_ptr) || inuse(next));
-
- /* ... and has minimally sane links */
- assert(p->fd->bk == p);
- assert(p->bk->fd == p);
-}
-
-#if __STD_C
-static void do_check_inuse_chunk(arena *ar_ptr, mchunkptr p)
-#else
-static void do_check_inuse_chunk(ar_ptr, p) arena *ar_ptr; mchunkptr p;
-#endif
-{
- mchunkptr next = next_chunk(p);
- do_check_chunk(ar_ptr, p);
-
- /* Check whether it claims to be in use ... */
- assert(inuse(p));
-
- /* ... whether its size is OK (it might be a fencepost) ... */
- assert(chunksize(p) >= MINSIZE || next->size == (0|PREV_INUSE));
-
- /* ... and is surrounded by OK chunks.
- Since more things can be checked with free chunks than inuse ones,
- if an inuse chunk borders them and debug is on, it's worth doing them.
- */
- if (!prev_inuse(p))
- {
- mchunkptr prv = prev_chunk(p);
- assert(next_chunk(prv) == p);
- do_check_free_chunk(ar_ptr, prv);
- }
- if (next == top(ar_ptr))
- {
- assert(prev_inuse(next));
- assert(chunksize(next) >= MINSIZE);
- }
- else if (!inuse(next))
- do_check_free_chunk(ar_ptr, next);
-
-}
-
-#if __STD_C
-static void do_check_malloced_chunk(arena *ar_ptr,
- mchunkptr p, INTERNAL_SIZE_T s)
-#else
-static void do_check_malloced_chunk(ar_ptr, p, s)
-arena *ar_ptr; mchunkptr p; INTERNAL_SIZE_T s;
-#endif
-{
- INTERNAL_SIZE_T sz = p->size & ~PREV_INUSE;
- long room = sz - s;
-
- do_check_inuse_chunk(ar_ptr, p);
-
- /* Legal size ... */
- assert((long)sz >= (long)MINSIZE);
- assert((sz & MALLOC_ALIGN_MASK) == 0);
- assert(room >= 0);
- assert(room < (long)MINSIZE);
-
- /* ... and alignment */
- assert(aligned_OK(chunk2mem(p)));
-
-
- /* ... and was allocated at front of an available chunk */
- assert(prev_inuse(p));
-
-}
-
-
-#define check_free_chunk(A,P) do_check_free_chunk(A,P)
-#define check_inuse_chunk(A,P) do_check_inuse_chunk(A,P)
-#define check_chunk(A,P) do_check_chunk(A,P)
-#define check_malloced_chunk(A,P,N) do_check_malloced_chunk(A,P,N)
-#else
-#define check_free_chunk(A,P)
-#define check_inuse_chunk(A,P)
-#define check_chunk(A,P)
-#define check_malloced_chunk(A,P,N)
-#endif
-
-
-
-/*
- Macro-based internal utilities
-*/
-
-
-/*
- Linking chunks in bin lists.
- Call these only with variables, not arbitrary expressions, as arguments.
-*/
-
-/*
- Place chunk p of size s in its bin, in size order,
- putting it ahead of others of same size.
-*/
-
-
-#define frontlink(A, P, S, IDX, BK, FD) \
-{ \
- if (S < MAX_SMALLBIN_SIZE) \
- { \
- IDX = smallbin_index(S); \
- mark_binblock(A, IDX); \
- BK = bin_at(A, IDX); \
- FD = BK->fd; \
- P->bk = BK; \
- P->fd = FD; \
- FD->bk = BK->fd = P; \
- } \
- else \
- { \
- IDX = bin_index(S); \
- BK = bin_at(A, IDX); \
- FD = BK->fd; \
- if (FD == BK) mark_binblock(A, IDX); \
- else \
- { \
- while (FD != BK && S < chunksize(FD)) FD = FD->fd; \
- BK = FD->bk; \
- } \
- P->bk = BK; \
- P->fd = FD; \
- FD->bk = BK->fd = P; \
- } \
-}
-
-
-/* take a chunk off a list */
-
-#define unlink(P, BK, FD) \
-{ \
- BK = P->bk; \
- FD = P->fd; \
- FD->bk = BK; \
- BK->fd = FD; \
-} \
-
-/* Place p as the last remainder */
-
-#define link_last_remainder(A, P) \
-{ \
- last_remainder(A)->fd = last_remainder(A)->bk = P; \
- P->fd = P->bk = last_remainder(A); \
-}
-
-/* Clear the last_remainder bin */
-
-#define clear_last_remainder(A) \
- (last_remainder(A)->fd = last_remainder(A)->bk = last_remainder(A))
-
-
-
-
-
-/*
- Extend the top-most chunk by obtaining memory from system.
- Main interface to sbrk (but see also malloc_trim).
-*/
-
-#if defined __GNUC__ && __GNUC__ >= 2
-/* This function is called only from one place, inline it. */
-__inline__
-#endif
-static void
-internal_function
-#if __STD_C
-malloc_extend_top(arena *ar_ptr, INTERNAL_SIZE_T nb)
-#else
-malloc_extend_top(ar_ptr, nb) arena *ar_ptr; INTERNAL_SIZE_T nb;
-#endif
-{
- unsigned long pagesz = malloc_getpagesize;
- mchunkptr old_top = top(ar_ptr); /* Record state of old top */
- INTERNAL_SIZE_T old_top_size = chunksize(old_top);
- INTERNAL_SIZE_T top_size; /* new size of top chunk */
-
-#if USE_ARENAS
- if(ar_ptr == &main_arena) {
-#endif
-
- char* brk; /* return value from sbrk */
- INTERNAL_SIZE_T front_misalign; /* unusable bytes at front of sbrked space */
- INTERNAL_SIZE_T correction; /* bytes for 2nd sbrk call */
- char* new_brk; /* return of 2nd sbrk call */
- char* old_end = (char*)(chunk_at_offset(old_top, old_top_size));
-
- /* Pad request with top_pad plus minimal overhead */
- INTERNAL_SIZE_T sbrk_size = nb + top_pad + MINSIZE;
-
- /* If not the first time through, round to preserve page boundary */
- /* Otherwise, we need to correct to a page size below anyway. */
- /* (We also correct below if an intervening foreign sbrk call.) */
-
- if (sbrk_base != (char*)(-1))
- sbrk_size = (sbrk_size + (pagesz - 1)) & ~(pagesz - 1);
-
- brk = (char*)(MORECORE (sbrk_size));
-
- /* Fail if sbrk failed or if a foreign sbrk call killed our space */
- if (brk == (char*)(MORECORE_FAILURE) ||
- (brk < old_end && old_top != initial_top(&main_arena)))
- return;
-
-#if defined _LIBC || defined MALLOC_HOOKS
- /* Call the `morecore' hook if necessary. */
- if (__after_morecore_hook)
- (*__after_morecore_hook) ();
-#endif
-
- sbrked_mem += sbrk_size;
-
- if (brk == old_end) { /* can just add bytes to current top */
- top_size = sbrk_size + old_top_size;
- set_head(old_top, top_size | PREV_INUSE);
- old_top = 0; /* don't free below */
- } else {
- if (sbrk_base == (char*)(-1)) /* First time through. Record base */
- sbrk_base = brk;
- else
- /* Someone else called sbrk(). Count those bytes as sbrked_mem. */
- sbrked_mem += brk - (char*)old_end;
-
- /* Guarantee alignment of first new chunk made from this space */
- front_misalign = (unsigned long)chunk2mem(brk) & MALLOC_ALIGN_MASK;
- if (front_misalign > 0) {
- correction = (MALLOC_ALIGNMENT) - front_misalign;
- brk += correction;
- } else
- correction = 0;
-
- /* Guarantee the next brk will be at a page boundary */
- correction += pagesz - ((unsigned long)(brk + sbrk_size) & (pagesz - 1));
-
- /* Allocate correction */
- new_brk = (char*)(MORECORE (correction));
- if (new_brk == (char*)(MORECORE_FAILURE)) return;
-
-#if defined _LIBC || defined MALLOC_HOOKS
- /* Call the `morecore' hook if necessary. */
- if (__after_morecore_hook)
- (*__after_morecore_hook) ();
-#endif
-
- sbrked_mem += correction;
-
- top(&main_arena) = chunk_at_offset(brk, 0);
- top_size = new_brk - brk + correction;
- set_head(top(&main_arena), top_size | PREV_INUSE);
-
- if (old_top == initial_top(&main_arena))
- old_top = 0; /* don't free below */
- }
-
- if ((unsigned long)sbrked_mem > (unsigned long)max_sbrked_mem)
- max_sbrked_mem = sbrked_mem;
-#ifdef NO_THREADS
- if ((unsigned long)(mmapped_mem + arena_mem + sbrked_mem) > max_total_mem)
- max_total_mem = mmapped_mem + arena_mem + sbrked_mem;
-#endif
-
-#if USE_ARENAS
- } else { /* ar_ptr != &main_arena */
- heap_info *old_heap, *heap;
- size_t old_heap_size;
-
- if(old_top_size < MINSIZE) /* this should never happen */
- return;
-
- /* First try to extend the current heap. */
- if(MINSIZE + nb <= old_top_size)
- return;
- old_heap = heap_for_ptr(old_top);
- old_heap_size = old_heap->size;
- if(grow_heap(old_heap, MINSIZE + nb - old_top_size) == 0) {
- ar_ptr->size += old_heap->size - old_heap_size;
- arena_mem += old_heap->size - old_heap_size;
-#ifdef NO_THREADS
- if(mmapped_mem + arena_mem + sbrked_mem > max_total_mem)
- max_total_mem = mmapped_mem + arena_mem + sbrked_mem;
-#endif
- top_size = ((char *)old_heap + old_heap->size) - (char *)old_top;
- set_head(old_top, top_size | PREV_INUSE);
- return;
- }
-
- /* A new heap must be created. */
- heap = new_heap(nb + (MINSIZE + sizeof(*heap)));
- if(!heap)
- return;
- heap->ar_ptr = ar_ptr;
- heap->prev = old_heap;
- ar_ptr->size += heap->size;
- arena_mem += heap->size;
-#ifdef NO_THREADS
- if((unsigned long)(mmapped_mem + arena_mem + sbrked_mem) > max_total_mem)
- max_total_mem = mmapped_mem + arena_mem + sbrked_mem;
-#endif
-
- /* Set up the new top, so we can safely use chunk_free() below. */
- top(ar_ptr) = chunk_at_offset(heap, sizeof(*heap));
- top_size = heap->size - sizeof(*heap);
- set_head(top(ar_ptr), top_size | PREV_INUSE);
- }
-#endif /* USE_ARENAS */
-
- /* We always land on a page boundary */
- assert(((unsigned long)((char*)top(ar_ptr) + top_size) & (pagesz-1)) == 0);
-
- /* Setup fencepost and free the old top chunk. */
- if(old_top) {
- /* The fencepost takes at least MINSIZE bytes, because it might
- become the top chunk again later. Note that a footer is set
- up, too, although the chunk is marked in use. */
- old_top_size -= MINSIZE;
- set_head(chunk_at_offset(old_top, old_top_size + 2*SIZE_SZ), 0|PREV_INUSE);
- if(old_top_size >= MINSIZE) {
- set_head(chunk_at_offset(old_top, old_top_size), (2*SIZE_SZ)|PREV_INUSE);
- set_foot(chunk_at_offset(old_top, old_top_size), (2*SIZE_SZ));
- set_head_size(old_top, old_top_size);
- chunk_free(ar_ptr, old_top);
- } else {
- set_head(old_top, (old_top_size + 2*SIZE_SZ)|PREV_INUSE);
- set_foot(old_top, (old_top_size + 2*SIZE_SZ));
- }
- }
-}
-
-
-
-
-/* Main public routines */
-
-
-/*
- Malloc Algorithm:
-
- The requested size is first converted into a usable form, `nb'.
- This currently means to add 4 bytes overhead plus possibly more to
- obtain 8-byte alignment and/or to obtain a size of at least
- MINSIZE (currently 16, 24, or 32 bytes), the smallest allocatable
- size. (All fits are considered `exact' if they are within MINSIZE
- bytes.)
-
- From there, the first successful of the following steps is taken:
-
- 1. The bin corresponding to the request size is scanned, and if
- a chunk of exactly the right size is found, it is taken.
-
- 2. The most recently remaindered chunk is used if it is big
- enough. This is a form of (roving) first fit, used only in
- the absence of exact fits. Runs of consecutive requests use
- the remainder of the chunk used for the previous such request
- whenever possible. This limited use of a first-fit style
- allocation strategy tends to give contiguous chunks
- coextensive lifetimes, which improves locality and can reduce
- fragmentation in the long run.
-
- 3. Other bins are scanned in increasing size order, using a
- chunk big enough to fulfill the request, and splitting off
- any remainder. This search is strictly by best-fit; i.e.,
- the smallest (with ties going to approximately the least
- recently used) chunk that fits is selected.
-
- 4. If large enough, the chunk bordering the end of memory
- (`top') is split off. (This use of `top' is in accord with
- the best-fit search rule. In effect, `top' is treated as
- larger (and thus less well fitting) than any other available
- chunk since it can be extended to be as large as necessary
- (up to system limitations).
-
- 5. If the request size meets the mmap threshold and the
- system supports mmap, and there are few enough currently
- allocated mmapped regions, and a call to mmap succeeds,
- the request is allocated via direct memory mapping.
-
- 6. Otherwise, the top of memory is extended by
- obtaining more space from the system (normally using sbrk,
- but definable to anything else via the MORECORE macro).
- Memory is gathered from the system (in system page-sized
- units) in a way that allows chunks obtained across different
- sbrk calls to be consolidated, but does not require
- contiguous memory. Thus, it should be safe to intersperse
- mallocs with other sbrk calls.
-
-
- All allocations are made from the `lowest' part of any found
- chunk. (The implementation invariant is that prev_inuse is
- always true of any allocated chunk; i.e., that each allocated
- chunk borders either a previously allocated and still in-use chunk,
- or the base of its memory arena.)
-
-*/
-
-#if __STD_C
-Void_t* mALLOc(size_t bytes)
-#else
-Void_t* mALLOc(bytes) size_t bytes;
-#endif
-{
- arena *ar_ptr;
- INTERNAL_SIZE_T nb; /* padded request size */
- mchunkptr victim;
-
-#if defined _LIBC || defined MALLOC_HOOKS
- __malloc_ptr_t (*hook) __MALLOC_PMT ((size_t, __const __malloc_ptr_t)) =
- __malloc_hook;
- if (hook != NULL) {
- Void_t* result;
-
-#if defined __GNUC__ && __GNUC__ >= 2
- result = (*hook)(bytes, RETURN_ADDRESS (0));
-#else
- result = (*hook)(bytes, NULL);
-#endif
- return result;
- }
-#endif
-
- if(request2size(bytes, nb))
- return 0;
- arena_get(ar_ptr, nb);
- if(!ar_ptr)
- return 0;
- victim = chunk_alloc(ar_ptr, nb);
- if(!victim) {
- /* Maybe the failure is due to running out of mmapped areas. */
- if(ar_ptr != &main_arena) {
- (void)mutex_unlock(&ar_ptr->mutex);
- (void)mutex_lock(&main_arena.mutex);
- victim = chunk_alloc(&main_arena, nb);
- (void)mutex_unlock(&main_arena.mutex);
- } else {
-#if USE_ARENAS
- /* ... or sbrk() has failed and there is still a chance to mmap() */
- ar_ptr = arena_get2(ar_ptr->next ? ar_ptr : 0, nb);
- (void)mutex_unlock(&main_arena.mutex);
- if(ar_ptr) {
- victim = chunk_alloc(ar_ptr, nb);
- (void)mutex_unlock(&ar_ptr->mutex);
- }
-#endif
- }
- if(!victim) return 0;
- } else
- (void)mutex_unlock(&ar_ptr->mutex);
- return BOUNDED_N(chunk2mem(victim), bytes);
-}
-
-static mchunkptr
-internal_function
-#if __STD_C
-chunk_alloc(arena *ar_ptr, INTERNAL_SIZE_T nb)
-#else
-chunk_alloc(ar_ptr, nb) arena *ar_ptr; INTERNAL_SIZE_T nb;
-#endif
-{
- mchunkptr victim; /* inspected/selected chunk */
- INTERNAL_SIZE_T victim_size; /* its size */
- int idx; /* index for bin traversal */
- mbinptr bin; /* associated bin */
- mchunkptr remainder; /* remainder from a split */
- long remainder_size; /* its size */
- int remainder_index; /* its bin index */
- unsigned long block; /* block traverser bit */
- int startidx; /* first bin of a traversed block */
- mchunkptr fwd; /* misc temp for linking */
- mchunkptr bck; /* misc temp for linking */
- mbinptr q; /* misc temp */
-
-
- /* Check for exact match in a bin */
-
- if (is_small_request(nb)) /* Faster version for small requests */
- {
- idx = smallbin_index(nb);
-
- /* No traversal or size check necessary for small bins. */
-
- q = _bin_at(ar_ptr, idx);
- victim = last(q);
-
- /* Also scan the next one, since it would have a remainder < MINSIZE */
- if (victim == q)
- {
- q = next_bin(q);
- victim = last(q);
- }
- if (victim != q)
- {
- victim_size = chunksize(victim);
- unlink(victim, bck, fwd);
- set_inuse_bit_at_offset(victim, victim_size);
- check_malloced_chunk(ar_ptr, victim, nb);
- return victim;
- }
-
- idx += 2; /* Set for bin scan below. We've already scanned 2 bins. */
-
- }
- else
- {
- idx = bin_index(nb);
- bin = bin_at(ar_ptr, idx);
-
- for (victim = last(bin); victim != bin; victim = victim->bk)
- {
- victim_size = chunksize(victim);
- remainder_size = victim_size - nb;
-
- if (remainder_size >= (long)MINSIZE) /* too big */
- {
- --idx; /* adjust to rescan below after checking last remainder */
- break;
- }
-
- else if (remainder_size >= 0) /* exact fit */
- {
- unlink(victim, bck, fwd);
- set_inuse_bit_at_offset(victim, victim_size);
- check_malloced_chunk(ar_ptr, victim, nb);
- return victim;
- }
- }
-
- ++idx;
-
- }
-
- /* Try to use the last split-off remainder */
-
- if ( (victim = last_remainder(ar_ptr)->fd) != last_remainder(ar_ptr))
- {
- victim_size = chunksize(victim);
- remainder_size = victim_size - nb;
-
- if (remainder_size >= (long)MINSIZE) /* re-split */
- {
- remainder = chunk_at_offset(victim, nb);
- set_head(victim, nb | PREV_INUSE);
- link_last_remainder(ar_ptr, remainder);
- set_head(remainder, remainder_size | PREV_INUSE);
- set_foot(remainder, remainder_size);
- check_malloced_chunk(ar_ptr, victim, nb);
- return victim;
- }
-
- clear_last_remainder(ar_ptr);
-
- if (remainder_size >= 0) /* exhaust */
- {
- set_inuse_bit_at_offset(victim, victim_size);
- check_malloced_chunk(ar_ptr, victim, nb);
- return victim;
- }
-
- /* Else place in bin */
-
- frontlink(ar_ptr, victim, victim_size, remainder_index, bck, fwd);
- }
-
- /*
- If there are any possibly nonempty big-enough blocks,
- search for best fitting chunk by scanning bins in blockwidth units.
- */
-
- if ( (block = idx2binblock(idx)) <= binblocks(ar_ptr))
- {
-
- /* Get to the first marked block */
-
- if ( (block & binblocks(ar_ptr)) == 0)
- {
- /* force to an even block boundary */
- idx = (idx & ~(BINBLOCKWIDTH - 1)) + BINBLOCKWIDTH;
- block <<= 1;
- while ((block & binblocks(ar_ptr)) == 0)
- {
- idx += BINBLOCKWIDTH;
- block <<= 1;
- }
- }
-
- /* For each possibly nonempty block ... */
- for (;;)
- {
- startidx = idx; /* (track incomplete blocks) */
- q = bin = _bin_at(ar_ptr, idx);
-
- /* For each bin in this block ... */
- do
- {
- /* Find and use first big enough chunk ... */
-
- for (victim = last(bin); victim != bin; victim = victim->bk)
- {
- victim_size = chunksize(victim);
- remainder_size = victim_size - nb;
-
- if (remainder_size >= (long)MINSIZE) /* split */
- {
- remainder = chunk_at_offset(victim, nb);
- set_head(victim, nb | PREV_INUSE);
- unlink(victim, bck, fwd);
- link_last_remainder(ar_ptr, remainder);
- set_head(remainder, remainder_size | PREV_INUSE);
- set_foot(remainder, remainder_size);
- check_malloced_chunk(ar_ptr, victim, nb);
- return victim;
- }
-
- else if (remainder_size >= 0) /* take */
- {
- set_inuse_bit_at_offset(victim, victim_size);
- unlink(victim, bck, fwd);
- check_malloced_chunk(ar_ptr, victim, nb);
- return victim;
- }
-
- }
-
- bin = next_bin(bin);
-
- } while ((++idx & (BINBLOCKWIDTH - 1)) != 0);
-
- /* Clear out the block bit. */
-
- do /* Possibly backtrack to try to clear a partial block */
- {
- if ((startidx & (BINBLOCKWIDTH - 1)) == 0)
- {
- binblocks(ar_ptr) &= ~block;
- break;
- }
- --startidx;
- q = prev_bin(q);
- } while (first(q) == q);
-
- /* Get to the next possibly nonempty block */
-
- if ( (block <<= 1) <= binblocks(ar_ptr) && (block != 0) )
- {
- while ((block & binblocks(ar_ptr)) == 0)
- {
- idx += BINBLOCKWIDTH;
- block <<= 1;
- }
- }
- else
- break;
- }
- }
-
-
- /* Try to use top chunk */
-
- /* Require that there be a remainder, ensuring top always exists */
- if ( (remainder_size = chunksize(top(ar_ptr)) - nb) < (long)MINSIZE)
- {
-
-#if HAVE_MMAP
- /* If the request is big and there are not yet too many regions,
- and we would otherwise need to extend, try to use mmap instead. */
- if ((unsigned long)nb >= (unsigned long)mmap_threshold &&
- n_mmaps < n_mmaps_max &&
- (victim = mmap_chunk(nb)) != 0)
- return victim;
-#endif
-
- /* Try to extend */
- malloc_extend_top(ar_ptr, nb);
- if ((remainder_size = chunksize(top(ar_ptr)) - nb) < (long)MINSIZE)
- {
-#if HAVE_MMAP
- /* A last attempt: when we are out of address space in a
- non-main arena, try mmap anyway, as long as it is allowed at
- all. */
- if (ar_ptr != &main_arena &&
- n_mmaps_max > 0 &&
- (victim = mmap_chunk(nb)) != 0)
- return victim;
-#endif
- return 0; /* propagate failure */
- }
- }
-
- victim = top(ar_ptr);
- set_head(victim, nb | PREV_INUSE);
- top(ar_ptr) = chunk_at_offset(victim, nb);
- set_head(top(ar_ptr), remainder_size | PREV_INUSE);
- check_malloced_chunk(ar_ptr, victim, nb);
- return victim;
-
-}
-
-
-
-
-/*
-
- free() algorithm :
-
- cases:
-
- 1. free(0) has no effect.
-
- 2. If the chunk was allocated via mmap, it is released via munmap().
-
- 3. If a returned chunk borders the current high end of memory,
- it is consolidated into the top, and if the total unused
- topmost memory exceeds the trim threshold, malloc_trim is
- called.
-
- 4. Other chunks are consolidated as they arrive, and
- placed in corresponding bins. (This includes the case of
- consolidating with the current `last_remainder').
-
-*/
-
-
-#if __STD_C
-void fREe(Void_t* mem)
-#else
-void fREe(mem) Void_t* mem;
-#endif
-{
- arena *ar_ptr;
- mchunkptr p; /* chunk corresponding to mem */
-
-#if defined _LIBC || defined MALLOC_HOOKS
- void (*hook) __MALLOC_PMT ((__malloc_ptr_t, __const __malloc_ptr_t)) =
- __free_hook;
-
- if (hook != NULL) {
-#if defined __GNUC__ && __GNUC__ >= 2
- (*hook)(mem, RETURN_ADDRESS (0));
-#else
- (*hook)(mem, NULL);
-#endif
- return;
- }
-#endif
-
- if (mem == 0) /* free(0) has no effect */
- return;
-
- p = mem2chunk(mem);
-
-#if HAVE_MMAP
- if (chunk_is_mmapped(p)) /* release mmapped memory. */
- {
- munmap_chunk(p);
- return;
- }
-#endif
-
- ar_ptr = arena_for_ptr(p);
-#if THREAD_STATS
- if(!mutex_trylock(&ar_ptr->mutex))
- ++(ar_ptr->stat_lock_direct);
- else {
- (void)mutex_lock(&ar_ptr->mutex);
- ++(ar_ptr->stat_lock_wait);
- }
-#else
- (void)mutex_lock(&ar_ptr->mutex);
-#endif
- chunk_free(ar_ptr, p);
- (void)mutex_unlock(&ar_ptr->mutex);
-}
-
-static void
-internal_function
-#if __STD_C
-chunk_free(arena *ar_ptr, mchunkptr p)
-#else
-chunk_free(ar_ptr, p) arena *ar_ptr; mchunkptr p;
-#endif
-{
- INTERNAL_SIZE_T hd = p->size; /* its head field */
- INTERNAL_SIZE_T sz; /* its size */
- int idx; /* its bin index */
- mchunkptr next; /* next contiguous chunk */
- INTERNAL_SIZE_T nextsz; /* its size */
- INTERNAL_SIZE_T prevsz; /* size of previous contiguous chunk */
- mchunkptr bck; /* misc temp for linking */
- mchunkptr fwd; /* misc temp for linking */
- int islr; /* track whether merging with last_remainder */
-
- check_inuse_chunk(ar_ptr, p);
-
- sz = hd & ~PREV_INUSE;
- next = chunk_at_offset(p, sz);
- nextsz = chunksize(next);
-
- if (next == top(ar_ptr)) /* merge with top */
- {
- sz += nextsz;
-
- if (!(hd & PREV_INUSE)) /* consolidate backward */
- {
- prevsz = p->prev_size;
- p = chunk_at_offset(p, -(long)prevsz);
- sz += prevsz;
- unlink(p, bck, fwd);
- }
-
- set_head(p, sz | PREV_INUSE);
- top(ar_ptr) = p;
-
-#if USE_ARENAS
- if(ar_ptr == &main_arena) {
-#endif
- if ((unsigned long)(sz) >= (unsigned long)trim_threshold)
- main_trim(top_pad);
-#if USE_ARENAS
- } else {
- heap_info *heap = heap_for_ptr(p);
-
- assert(heap->ar_ptr == ar_ptr);
-
- /* Try to get rid of completely empty heaps, if possible. */
- if((unsigned long)(sz) >= (unsigned long)trim_threshold ||
- p == chunk_at_offset(heap, sizeof(*heap)))
- heap_trim(heap, top_pad);
- }
-#endif
- return;
- }
-
- islr = 0;
-
- if (!(hd & PREV_INUSE)) /* consolidate backward */
- {
- prevsz = p->prev_size;
- p = chunk_at_offset(p, -(long)prevsz);
- sz += prevsz;
-
- if (p->fd == last_remainder(ar_ptr)) /* keep as last_remainder */
- islr = 1;
- else
- unlink(p, bck, fwd);
- }
-
- if (!(inuse_bit_at_offset(next, nextsz))) /* consolidate forward */
- {
- sz += nextsz;
-
- if (!islr && next->fd == last_remainder(ar_ptr))
- /* re-insert last_remainder */
- {
- islr = 1;
- link_last_remainder(ar_ptr, p);
- }
- else
- unlink(next, bck, fwd);
-
- next = chunk_at_offset(p, sz);
- }
- else
- set_head(next, nextsz); /* clear inuse bit */
-
- set_head(p, sz | PREV_INUSE);
- next->prev_size = sz;
- if (!islr)
- frontlink(ar_ptr, p, sz, idx, bck, fwd);
-
-#if USE_ARENAS
- /* Check whether the heap containing top can go away now. */
- if(next->size < MINSIZE &&
- (unsigned long)sz > trim_threshold &&
- ar_ptr != &main_arena) { /* fencepost */
- heap_info *heap = heap_for_ptr(top(ar_ptr));
-
- if(top(ar_ptr) == chunk_at_offset(heap, sizeof(*heap)) &&
- heap->prev == heap_for_ptr(p))
- heap_trim(heap, top_pad);
- }
-#endif
-}
-
-
-
-
-
-/*
-
- Realloc algorithm:
-
- Chunks that were obtained via mmap cannot be extended or shrunk
- unless HAVE_MREMAP is defined, in which case mremap is used.
- Otherwise, if their reallocation is for additional space, they are
- copied. If for less, they are just left alone.
-
- Otherwise, if the reallocation is for additional space, and the
- chunk can be extended, it is, else a malloc-copy-free sequence is
- taken. There are several different ways that a chunk could be
- extended. All are tried:
-
- * Extending forward into following adjacent free chunk.
- * Shifting backwards, joining preceding adjacent space
- * Both shifting backwards and extending forward.
- * Extending into newly sbrked space
-
- Unless the #define REALLOC_ZERO_BYTES_FREES is set, realloc with a
- size argument of zero (re)allocates a minimum-sized chunk.
-
- If the reallocation is for less space, and the new request is for
- a `small' (<512 bytes) size, then the newly unused space is lopped
- off and freed.
-
- The old unix realloc convention of allowing the last-free'd chunk
- to be used as an argument to realloc is no longer supported.
- I don't know of any programs still relying on this feature,
- and allowing it would also allow too many other incorrect
- usages of realloc to be sensible.
-
-
-*/
-
-
-#if __STD_C
-Void_t* rEALLOc(Void_t* oldmem, size_t bytes)
-#else
-Void_t* rEALLOc(oldmem, bytes) Void_t* oldmem; size_t bytes;
-#endif
-{
- arena *ar_ptr;
- INTERNAL_SIZE_T nb; /* padded request size */
-
- mchunkptr oldp; /* chunk corresponding to oldmem */
- INTERNAL_SIZE_T oldsize; /* its size */
-
- mchunkptr newp; /* chunk to return */
-
-#if defined _LIBC || defined MALLOC_HOOKS
- __malloc_ptr_t (*hook) __MALLOC_PMT ((__malloc_ptr_t, size_t,
- __const __malloc_ptr_t)) =
- __realloc_hook;
- if (hook != NULL) {
- Void_t* result;
-
-#if defined __GNUC__ && __GNUC__ >= 2
- result = (*hook)(oldmem, bytes, RETURN_ADDRESS (0));
-#else
- result = (*hook)(oldmem, bytes, NULL);
-#endif
- return result;
- }
-#endif
-
-#ifdef REALLOC_ZERO_BYTES_FREES
- if (bytes == 0 && oldmem != NULL) { fREe(oldmem); return 0; }
-#endif
-
- /* realloc of null is supposed to be same as malloc */
- if (oldmem == 0) return mALLOc(bytes);
-
- oldp = mem2chunk(oldmem);
- oldsize = chunksize(oldp);
-
- if(request2size(bytes, nb))
- return 0;
-
-#if HAVE_MMAP
- if (chunk_is_mmapped(oldp))
- {
- Void_t* newmem;
-
-#if HAVE_MREMAP
- newp = mremap_chunk(oldp, nb);
- if(newp)
- return BOUNDED_N(chunk2mem(newp), bytes);
-#endif
- /* Note the extra SIZE_SZ overhead. */
- if(oldsize - SIZE_SZ >= nb) return oldmem; /* do nothing */
- /* Must alloc, copy, free. */
- newmem = mALLOc(bytes);
- if (newmem == 0) return 0; /* propagate failure */
- MALLOC_COPY(newmem, oldmem, oldsize - 2*SIZE_SZ, 0);
- munmap_chunk(oldp);
- return newmem;
- }
-#endif
-
- ar_ptr = arena_for_ptr(oldp);
-#if THREAD_STATS
- if(!mutex_trylock(&ar_ptr->mutex))
- ++(ar_ptr->stat_lock_direct);
- else {
- (void)mutex_lock(&ar_ptr->mutex);
- ++(ar_ptr->stat_lock_wait);
- }
-#else
- (void)mutex_lock(&ar_ptr->mutex);
-#endif
-
-#ifndef NO_THREADS
- /* As in malloc(), remember this arena for the next allocation. */
- tsd_setspecific(arena_key, (Void_t *)ar_ptr);
-#endif
-
- newp = chunk_realloc(ar_ptr, oldp, oldsize, nb);
-
- (void)mutex_unlock(&ar_ptr->mutex);
- return newp ? BOUNDED_N(chunk2mem(newp), bytes) : NULL;
-}
-
-static mchunkptr
-internal_function
-#if __STD_C
-chunk_realloc(arena* ar_ptr, mchunkptr oldp, INTERNAL_SIZE_T oldsize,
- INTERNAL_SIZE_T nb)
-#else
-chunk_realloc(ar_ptr, oldp, oldsize, nb)
-arena* ar_ptr; mchunkptr oldp; INTERNAL_SIZE_T oldsize, nb;
-#endif
-{
- mchunkptr newp = oldp; /* chunk to return */
- INTERNAL_SIZE_T newsize = oldsize; /* its size */
-
- mchunkptr next; /* next contiguous chunk after oldp */
- INTERNAL_SIZE_T nextsize; /* its size */
-
- mchunkptr prev; /* previous contiguous chunk before oldp */
- INTERNAL_SIZE_T prevsize; /* its size */
-
- mchunkptr remainder; /* holds split off extra space from newp */
- INTERNAL_SIZE_T remainder_size; /* its size */
-
- mchunkptr bck; /* misc temp for linking */
- mchunkptr fwd; /* misc temp for linking */
-
- check_inuse_chunk(ar_ptr, oldp);
-
- if ((long)(oldsize) < (long)(nb))
- {
- Void_t* oldmem = BOUNDED_N(chunk2mem(oldp), oldsize);
-
- /* Try expanding forward */
-
- next = chunk_at_offset(oldp, oldsize);
- if (next == top(ar_ptr) || !inuse(next))
- {
- nextsize = chunksize(next);
-
- /* Forward into top only if a remainder */
- if (next == top(ar_ptr))
- {
- if ((long)(nextsize + newsize) >= (long)(nb + MINSIZE))
- {
- newsize += nextsize;
- top(ar_ptr) = chunk_at_offset(oldp, nb);
- set_head(top(ar_ptr), (newsize - nb) | PREV_INUSE);
- set_head_size(oldp, nb);
- return oldp;
- }
- }
-
- /* Forward into next chunk */
- else if (((long)(nextsize + newsize) >= (long)(nb)))
- {
- unlink(next, bck, fwd);
- newsize += nextsize;
- goto split;
- }
- }
- else
- {
- next = 0;
- nextsize = 0;
- }
-
- oldsize -= SIZE_SZ;
-
- /* Try shifting backwards. */
-
- if (!prev_inuse(oldp))
- {
- prev = prev_chunk(oldp);
- prevsize = chunksize(prev);
-
- /* try forward + backward first to save a later consolidation */
-
- if (next != 0)
- {
- /* into top */
- if (next == top(ar_ptr))
- {
- if ((long)(nextsize + prevsize + newsize) >= (long)(nb + MINSIZE))
- {
- unlink(prev, bck, fwd);
- newp = prev;
- newsize += prevsize + nextsize;
- MALLOC_COPY(BOUNDED_N(chunk2mem(newp), oldsize), oldmem, oldsize,
- 1);
- top(ar_ptr) = chunk_at_offset(newp, nb);
- set_head(top(ar_ptr), (newsize - nb) | PREV_INUSE);
- set_head_size(newp, nb);
- return newp;
- }
- }
-
- /* into next chunk */
- else if (((long)(nextsize + prevsize + newsize) >= (long)(nb)))
- {
- unlink(next, bck, fwd);
- unlink(prev, bck, fwd);
- newp = prev;
- newsize += nextsize + prevsize;
- MALLOC_COPY(BOUNDED_N(chunk2mem(newp), oldsize), oldmem, oldsize, 1);
- goto split;
- }
- }
-
- /* backward only */
- if (prev != 0 && (long)(prevsize + newsize) >= (long)nb)
- {
- unlink(prev, bck, fwd);
- newp = prev;
- newsize += prevsize;
- MALLOC_COPY(BOUNDED_N(chunk2mem(newp), oldsize), oldmem, oldsize, 1);
- goto split;
- }
- }
-
- /* Must allocate */
-
- newp = chunk_alloc (ar_ptr, nb);
-
- if (newp == 0) {
- /* Maybe the failure is due to running out of mmapped areas. */
- if (ar_ptr != &main_arena) {
- (void)mutex_lock(&main_arena.mutex);
- newp = chunk_alloc(&main_arena, nb);
- (void)mutex_unlock(&main_arena.mutex);
- } else {
-#if USE_ARENAS
- /* ... or sbrk() has failed and there is still a chance to mmap() */
- arena* ar_ptr2 = arena_get2(ar_ptr->next ? ar_ptr : 0, nb);
- if(ar_ptr2) {
- newp = chunk_alloc(ar_ptr2, nb);
- (void)mutex_unlock(&ar_ptr2->mutex);
- }
-#endif
- }
- if (newp == 0) /* propagate failure */
- return 0;
- }
-
- /* Avoid copy if newp is next chunk after oldp. */
- /* (This can only happen when new chunk is sbrk'ed.) */
-
- if ( newp == next_chunk(oldp))
- {
- newsize += chunksize(newp);
- newp = oldp;
- goto split;
- }
-
- /* Otherwise copy, free, and exit */
- MALLOC_COPY(BOUNDED_N(chunk2mem(newp), oldsize), oldmem, oldsize, 0);
- chunk_free(ar_ptr, oldp);
- return newp;
- }
-
-
- split: /* split off extra room in old or expanded chunk */
-
- if (newsize - nb >= MINSIZE) /* split off remainder */
- {
- remainder = chunk_at_offset(newp, nb);
- remainder_size = newsize - nb;
- set_head_size(newp, nb);
- set_head(remainder, remainder_size | PREV_INUSE);
- set_inuse_bit_at_offset(remainder, remainder_size);
- chunk_free(ar_ptr, remainder);
- }
- else
- {
- set_head_size(newp, newsize);
- set_inuse_bit_at_offset(newp, newsize);
- }
-
- check_inuse_chunk(ar_ptr, newp);
- return newp;
-}
-
-
-
-
-/*
-
- memalign algorithm:
-
- memalign requests more than enough space from malloc, finds a spot
- within that chunk that meets the alignment request, and then
- possibly frees the leading and trailing space.
-
- The alignment argument must be a power of two. This property is not
- checked by memalign, so misuse may result in random runtime errors.
-
- 8-byte alignment is guaranteed by normal malloc calls, so don't
- bother calling memalign with an argument of 8 or less.
-
- Overreliance on memalign is a sure way to fragment space.
-
-*/
-
-
-#if __STD_C
-Void_t* mEMALIGn(size_t alignment, size_t bytes)
-#else
-Void_t* mEMALIGn(alignment, bytes) size_t alignment; size_t bytes;
-#endif
-{
- arena *ar_ptr;
- INTERNAL_SIZE_T nb; /* padded request size */
- mchunkptr p;
-
-#if defined _LIBC || defined MALLOC_HOOKS
- __malloc_ptr_t (*hook) __MALLOC_PMT ((size_t, size_t,
- __const __malloc_ptr_t)) =
- __memalign_hook;
- if (hook != NULL) {
- Void_t* result;
-
-#if defined __GNUC__ && __GNUC__ >= 2
- result = (*hook)(alignment, bytes, RETURN_ADDRESS (0));
-#else
- result = (*hook)(alignment, bytes, NULL);
-#endif
- return result;
- }
-#endif
-
- /* If need less alignment than we give anyway, just relay to malloc */
-
- if (alignment <= MALLOC_ALIGNMENT) return mALLOc(bytes);
-
- /* Otherwise, ensure that it is at least a minimum chunk size */
-
- if (alignment < MINSIZE) alignment = MINSIZE;
-
- if(request2size(bytes, nb))
- return 0;
- arena_get(ar_ptr, nb + alignment + MINSIZE);
- if(!ar_ptr)
- return 0;
- p = chunk_align(ar_ptr, nb, alignment);
- (void)mutex_unlock(&ar_ptr->mutex);
- if(!p) {
- /* Maybe the failure is due to running out of mmapped areas. */
- if(ar_ptr != &main_arena) {
- (void)mutex_lock(&main_arena.mutex);
- p = chunk_align(&main_arena, nb, alignment);
- (void)mutex_unlock(&main_arena.mutex);
- } else {
-#if USE_ARENAS
- /* ... or sbrk() has failed and there is still a chance to mmap() */
- ar_ptr = arena_get2(ar_ptr->next ? ar_ptr : 0, nb);
- if(ar_ptr) {
- p = chunk_align(ar_ptr, nb, alignment);
- (void)mutex_unlock(&ar_ptr->mutex);
- }
-#endif
- }
- if(!p) return 0;
- }
- return BOUNDED_N(chunk2mem(p), bytes);
-}
-
-static mchunkptr
-internal_function
-#if __STD_C
-chunk_align(arena* ar_ptr, INTERNAL_SIZE_T nb, size_t alignment)
-#else
-chunk_align(ar_ptr, nb, alignment)
-arena* ar_ptr; INTERNAL_SIZE_T nb; size_t alignment;
-#endif
-{
- unsigned long m; /* memory returned by malloc call */
- mchunkptr p; /* corresponding chunk */
- char* brk; /* alignment point within p */
- mchunkptr newp; /* chunk to return */
- INTERNAL_SIZE_T newsize; /* its size */
- INTERNAL_SIZE_T leadsize; /* leading space befor alignment point */
- mchunkptr remainder; /* spare room at end to split off */
- long remainder_size; /* its size */
-
- /* Call chunk_alloc with worst case padding to hit alignment. */
- p = chunk_alloc(ar_ptr, nb + alignment + MINSIZE);
- if (p == 0)
- return 0; /* propagate failure */
-
- m = (unsigned long)chunk2mem(p);
-
- if ((m % alignment) == 0) /* aligned */
- {
-#if HAVE_MMAP
- if(chunk_is_mmapped(p)) {
- return p; /* nothing more to do */
- }
-#endif
- }
- else /* misaligned */
- {
- /*
- Find an aligned spot inside chunk.
- Since we need to give back leading space in a chunk of at
- least MINSIZE, if the first calculation places us at
- a spot with less than MINSIZE leader, we can move to the
- next aligned spot -- we've allocated enough total room so that
- this is always possible.
- */
-
- brk = (char*)mem2chunk(((m + alignment - 1)) & -(long)alignment);
- if ((long)(brk - (char*)(p)) < (long)MINSIZE) brk += alignment;
-
- newp = chunk_at_offset(brk, 0);
- leadsize = brk - (char*)(p);
- newsize = chunksize(p) - leadsize;
-
-#if HAVE_MMAP
- if(chunk_is_mmapped(p))
- {
- newp->prev_size = p->prev_size + leadsize;
- set_head(newp, newsize|IS_MMAPPED);
- return newp;
- }
-#endif
-
- /* give back leader, use the rest */
-
- set_head(newp, newsize | PREV_INUSE);
- set_inuse_bit_at_offset(newp, newsize);
- set_head_size(p, leadsize);
- chunk_free(ar_ptr, p);
- p = newp;
-
- assert (newsize>=nb && (((unsigned long)(chunk2mem(p))) % alignment) == 0);
- }
-
- /* Also give back spare room at the end */
-
- remainder_size = chunksize(p) - nb;
-
- if (remainder_size >= (long)MINSIZE)
- {
- remainder = chunk_at_offset(p, nb);
- set_head(remainder, remainder_size | PREV_INUSE);
- set_head_size(p, nb);
- chunk_free(ar_ptr, remainder);
- }
-
- check_inuse_chunk(ar_ptr, p);
- return p;
-}
-
-
-
-
-/*
- valloc just invokes memalign with alignment argument equal
- to the page size of the system (or as near to this as can
- be figured out from all the includes/defines above.)
-*/
-
-#if __STD_C
-Void_t* vALLOc(size_t bytes)
-#else
-Void_t* vALLOc(bytes) size_t bytes;
-#endif
-{
- if(__malloc_initialized < 0)
- ptmalloc_init ();
- return mEMALIGn (malloc_getpagesize, bytes);
-}
-
-/*
- pvalloc just invokes valloc for the nearest pagesize
- that will accommodate request
-*/
-
-
-#if __STD_C
-Void_t* pvALLOc(size_t bytes)
-#else
-Void_t* pvALLOc(bytes) size_t bytes;
-#endif
-{
- size_t pagesize;
- if(__malloc_initialized < 0)
- ptmalloc_init ();
- pagesize = malloc_getpagesize;
- return mEMALIGn (pagesize, (bytes + pagesize - 1) & ~(pagesize - 1));
-}
-
-/*
-
- calloc calls chunk_alloc, then zeroes out the allocated chunk.
-
-*/
-
-#if __STD_C
-Void_t* cALLOc(size_t n, size_t elem_size)
-#else
-Void_t* cALLOc(n, elem_size) size_t n; size_t elem_size;
-#endif
-{
- arena *ar_ptr;
- mchunkptr p, oldtop;
- INTERNAL_SIZE_T sz, csz, oldtopsize;
- Void_t* mem;
-
-#if defined _LIBC || defined MALLOC_HOOKS
- __malloc_ptr_t (*hook) __MALLOC_PMT ((size_t, __const __malloc_ptr_t)) =
- __malloc_hook;
- if (hook != NULL) {
- sz = n * elem_size;
-#if defined __GNUC__ && __GNUC__ >= 2
- mem = (*hook)(sz, RETURN_ADDRESS (0));
-#else
- mem = (*hook)(sz, NULL);
-#endif
- if(mem == 0)
- return 0;
-#ifdef HAVE_MEMSET
- return memset(mem, 0, sz);
-#else
- while(sz > 0) ((char*)mem)[--sz] = 0; /* rather inefficient */
- return mem;
-#endif
- }
-#endif
-
- if(request2size(n * elem_size, sz))
- return 0;
- arena_get(ar_ptr, sz);
- if(!ar_ptr)
- return 0;
-
- /* Check if expand_top called, in which case there may be
- no need to clear. */
-#if MORECORE_CLEARS
- oldtop = top(ar_ptr);
- oldtopsize = chunksize(top(ar_ptr));
-#if MORECORE_CLEARS < 2
- /* Only newly allocated memory is guaranteed to be cleared. */
- if (ar_ptr == &main_arena &&
- oldtopsize < sbrk_base + max_sbrked_mem - (char *)oldtop)
- oldtopsize = (sbrk_base + max_sbrked_mem - (char *)oldtop);
-#endif
-#endif
- p = chunk_alloc (ar_ptr, sz);
-
- /* Only clearing follows, so we can unlock early. */
- (void)mutex_unlock(&ar_ptr->mutex);
-
- if (p == 0) {
- /* Maybe the failure is due to running out of mmapped areas. */
- if(ar_ptr != &main_arena) {
- (void)mutex_lock(&main_arena.mutex);
- p = chunk_alloc(&main_arena, sz);
- (void)mutex_unlock(&main_arena.mutex);
- } else {
-#if USE_ARENAS
- /* ... or sbrk() has failed and there is still a chance to mmap() */
- (void)mutex_lock(&main_arena.mutex);
- ar_ptr = arena_get2(ar_ptr->next ? ar_ptr : 0, sz);
- (void)mutex_unlock(&main_arena.mutex);
- if(ar_ptr) {
- p = chunk_alloc(ar_ptr, sz);
- (void)mutex_unlock(&ar_ptr->mutex);
- }
-#endif
- }
- if (p == 0) return 0;
- }
- mem = BOUNDED_N(chunk2mem(p), n * elem_size);
-
- /* Two optional cases in which clearing not necessary */
-
-#if HAVE_MMAP
- if (chunk_is_mmapped(p)) return mem;
-#endif
-
- csz = chunksize(p);
-
-#if MORECORE_CLEARS
- if (p == oldtop && csz > oldtopsize) {
- /* clear only the bytes from non-freshly-sbrked memory */
- csz = oldtopsize;
- }
-#endif
-
- csz -= SIZE_SZ;
- MALLOC_ZERO(BOUNDED_N(chunk2mem(p), csz), csz);
- return mem;
-}
-
-/*
-
- cfree just calls free. It is needed/defined on some systems
- that pair it with calloc, presumably for odd historical reasons.
-
-*/
-
-#if !defined(_LIBC)
-#if __STD_C
-void cfree(Void_t *mem)
-#else
-void cfree(mem) Void_t *mem;
-#endif
-{
- fREe(mem);
-}
-#endif
-
-
-
-/*
-
- Malloc_trim gives memory back to the system (via negative
- arguments to sbrk) if there is unused memory at the `high' end of
- the malloc pool. You can call this after freeing large blocks of
- memory to potentially reduce the system-level memory requirements
- of a program. However, it cannot guarantee to reduce memory. Under
- some allocation patterns, some large free blocks of memory will be
- locked between two used chunks, so they cannot be given back to
- the system.
-
- The `pad' argument to malloc_trim represents the amount of free
- trailing space to leave untrimmed. If this argument is zero,
- only the minimum amount of memory to maintain internal data
- structures will be left (one page or less). Non-zero arguments
- can be supplied to maintain enough trailing space to service
- future expected allocations without having to re-obtain memory
- from the system.
-
- Malloc_trim returns 1 if it actually released any memory, else 0.
-
-*/
-
-#if __STD_C
-int mALLOC_TRIm(size_t pad)
-#else
-int mALLOC_TRIm(pad) size_t pad;
-#endif
-{
- int res;
-
- (void)mutex_lock(&main_arena.mutex);
- res = main_trim(pad);
- (void)mutex_unlock(&main_arena.mutex);
- return res;
-}
-
-/* Trim the main arena. */
-
-static int
-internal_function
-#if __STD_C
-main_trim(size_t pad)
-#else
-main_trim(pad) size_t pad;
-#endif
-{
- mchunkptr top_chunk; /* The current top chunk */
- long top_size; /* Amount of top-most memory */
- long extra; /* Amount to release */
- char* current_brk; /* address returned by pre-check sbrk call */
- char* new_brk; /* address returned by negative sbrk call */
-
- unsigned long pagesz = malloc_getpagesize;
-
- top_chunk = top(&main_arena);
- top_size = chunksize(top_chunk);
- extra = ((top_size - pad - MINSIZE + (pagesz-1)) / pagesz - 1) * pagesz;
-
- if (extra < (long)pagesz) /* Not enough memory to release */
- return 0;
-
- /* Test to make sure no one else called sbrk */
- current_brk = (char*)(MORECORE (0));
- if (current_brk != (char*)(top_chunk) + top_size)
- return 0; /* Apparently we don't own memory; must fail */
-
- new_brk = (char*)(MORECORE (-extra));
-
-#if defined _LIBC || defined MALLOC_HOOKS
- /* Call the `morecore' hook if necessary. */
- if (__after_morecore_hook)
- (*__after_morecore_hook) ();
-#endif
-
- if (new_brk == (char*)(MORECORE_FAILURE)) { /* sbrk failed? */
- /* Try to figure out what we have */
- current_brk = (char*)(MORECORE (0));
- top_size = current_brk - (char*)top_chunk;
- if (top_size >= (long)MINSIZE) /* if not, we are very very dead! */
- {
- sbrked_mem = current_brk - sbrk_base;
- set_head(top_chunk, top_size | PREV_INUSE);
- }
- check_chunk(&main_arena, top_chunk);
- return 0;
- }
- sbrked_mem -= extra;
-
- /* Success. Adjust top accordingly. */
- set_head(top_chunk, (top_size - extra) | PREV_INUSE);
- check_chunk(&main_arena, top_chunk);
- return 1;
-}
-
-#if USE_ARENAS
-
-static int
-internal_function
-#if __STD_C
-heap_trim(heap_info *heap, size_t pad)
-#else
-heap_trim(heap, pad) heap_info *heap; size_t pad;
-#endif
-{
- unsigned long pagesz = malloc_getpagesize;
- arena *ar_ptr = heap->ar_ptr;
- mchunkptr top_chunk = top(ar_ptr), p, bck, fwd;
- heap_info *prev_heap;
- long new_size, top_size, extra;
-
- /* Can this heap go away completely ? */
- while(top_chunk == chunk_at_offset(heap, sizeof(*heap))) {
- prev_heap = heap->prev;
- p = chunk_at_offset(prev_heap, prev_heap->size - (MINSIZE-2*SIZE_SZ));
- assert(p->size == (0|PREV_INUSE)); /* must be fencepost */
- p = prev_chunk(p);
- new_size = chunksize(p) + (MINSIZE-2*SIZE_SZ);
- assert(new_size>0 && new_size<(long)(2*MINSIZE));
- if(!prev_inuse(p))
- new_size += p->prev_size;
- assert(new_size>0 && new_size<HEAP_MAX_SIZE);
- if(new_size + (HEAP_MAX_SIZE - prev_heap->size) < pad + MINSIZE + pagesz)
- break;
- ar_ptr->size -= heap->size;
- arena_mem -= heap->size;
- delete_heap(heap);
- heap = prev_heap;
- if(!prev_inuse(p)) { /* consolidate backward */
- p = prev_chunk(p);
- unlink(p, bck, fwd);
- }
- assert(((unsigned long)((char*)p + new_size) & (pagesz-1)) == 0);
- assert( ((char*)p + new_size) == ((char*)heap + heap->size) );
- top(ar_ptr) = top_chunk = p;
- set_head(top_chunk, new_size | PREV_INUSE);
- check_chunk(ar_ptr, top_chunk);
- }
- top_size = chunksize(top_chunk);
- extra = ((top_size - pad - MINSIZE + (pagesz-1))/pagesz - 1) * pagesz;
- if(extra < (long)pagesz)
- return 0;
- /* Try to shrink. */
- if(grow_heap(heap, -extra) != 0)
- return 0;
- ar_ptr->size -= extra;
- arena_mem -= extra;
-
- /* Success. Adjust top accordingly. */
- set_head(top_chunk, (top_size - extra) | PREV_INUSE);
- check_chunk(ar_ptr, top_chunk);
- return 1;
-}
-
-#endif /* USE_ARENAS */
-
-
-
-/*
- malloc_usable_size:
-
- This routine tells you how many bytes you can actually use in an
- allocated chunk, which may be more than you requested (although
- often not). You can use this many bytes without worrying about
- overwriting other allocated objects. Not a particularly great
- programming practice, but still sometimes useful.
-
-*/
-
-#if __STD_C
-size_t mALLOC_USABLE_SIZe(Void_t* mem)
-#else
-size_t mALLOC_USABLE_SIZe(mem) Void_t* mem;
-#endif
-{
- mchunkptr p;
-
- if (mem == 0)
- return 0;
- else
- {
- p = mem2chunk(mem);
- if(!chunk_is_mmapped(p))
- {
- if (!inuse(p)) return 0;
- check_inuse_chunk(arena_for_ptr(mem), p);
- return chunksize(p) - SIZE_SZ;
- }
- return chunksize(p) - 2*SIZE_SZ;
- }
-}
-
-
-
-
-/* Utility to update mallinfo for malloc_stats() and mallinfo() */
-
-static void
-#if __STD_C
-malloc_update_mallinfo(arena *ar_ptr, struct mallinfo *mi)
-#else
-malloc_update_mallinfo(ar_ptr, mi) arena *ar_ptr; struct mallinfo *mi;
-#endif
-{
- int i, navail;
- mbinptr b;
- mchunkptr p;
-#if MALLOC_DEBUG
- mchunkptr q;
-#endif
- INTERNAL_SIZE_T avail;
-
- (void)mutex_lock(&ar_ptr->mutex);
- avail = chunksize(top(ar_ptr));
- navail = ((long)(avail) >= (long)MINSIZE)? 1 : 0;
-
- for (i = 1; i < NAV; ++i)
- {
- b = bin_at(ar_ptr, i);
- for (p = last(b); p != b; p = p->bk)
- {
-#if MALLOC_DEBUG
- check_free_chunk(ar_ptr, p);
- for (q = next_chunk(p);
- q != top(ar_ptr) && inuse(q) && (long)chunksize(q) > 0;
- q = next_chunk(q))
- check_inuse_chunk(ar_ptr, q);
-#endif
- avail += chunksize(p);
- navail++;
- }
- }
-
- mi->arena = ar_ptr->size;
- mi->ordblks = navail;
- mi->smblks = mi->usmblks = mi->fsmblks = 0; /* clear unused fields */
- mi->uordblks = ar_ptr->size - avail;
- mi->fordblks = avail;
- mi->hblks = n_mmaps;
- mi->hblkhd = mmapped_mem;
- mi->keepcost = chunksize(top(ar_ptr));
-
- (void)mutex_unlock(&ar_ptr->mutex);
-}
-
-#if USE_ARENAS && MALLOC_DEBUG > 1
-
-/* Print the complete contents of a single heap to stderr. */
-
-static void
-#if __STD_C
-dump_heap(heap_info *heap)
-#else
-dump_heap(heap) heap_info *heap;
-#endif
-{
- char *ptr;
- mchunkptr p;
-
- fprintf(stderr, "Heap %p, size %10lx:\n", heap, (long)heap->size);
- ptr = (heap->ar_ptr != (arena*)(heap+1)) ?
- (char*)(heap + 1) : (char*)(heap + 1) + sizeof(arena);
- p = (mchunkptr)(((unsigned long)ptr + MALLOC_ALIGN_MASK) &
- ~MALLOC_ALIGN_MASK);
- for(;;) {
- fprintf(stderr, "chunk %p size %10lx", p, (long)p->size);
- if(p == top(heap->ar_ptr)) {
- fprintf(stderr, " (top)\n");
- break;
- } else if(p->size == (0|PREV_INUSE)) {
- fprintf(stderr, " (fence)\n");
- break;
- }
- fprintf(stderr, "\n");
- p = next_chunk(p);
- }
-}
-
-#endif
-
-
-
-/*
-
- malloc_stats:
-
- For all arenas separately and in total, prints on stderr the
- amount of space obtained from the system, and the current number
- of bytes allocated via malloc (or realloc, etc) but not yet
- freed. (Note that this is the number of bytes allocated, not the
- number requested. It will be larger than the number requested
- because of alignment and bookkeeping overhead.) When not compiled
- for multiple threads, the maximum amount of allocated memory
- (which may be more than current if malloc_trim and/or munmap got
- called) is also reported. When using mmap(), prints the maximum
- number of simultaneous mmap regions used, too.
-
-*/
-
-void mALLOC_STATs()
-{
- int i;
- arena *ar_ptr;
- struct mallinfo mi;
- unsigned int in_use_b = mmapped_mem, system_b = in_use_b;
-#if THREAD_STATS
- long stat_lock_direct = 0, stat_lock_loop = 0, stat_lock_wait = 0;
-#endif
-
- for(i=0, ar_ptr = &main_arena;; i++) {
- malloc_update_mallinfo(ar_ptr, &mi);
- fprintf(stderr, "Arena %d:\n", i);
- fprintf(stderr, "system bytes = %10u\n", (unsigned int)mi.arena);
- fprintf(stderr, "in use bytes = %10u\n", (unsigned int)mi.uordblks);
- system_b += mi.arena;
- in_use_b += mi.uordblks;
-#if THREAD_STATS
- stat_lock_direct += ar_ptr->stat_lock_direct;
- stat_lock_loop += ar_ptr->stat_lock_loop;
- stat_lock_wait += ar_ptr->stat_lock_wait;
-#endif
-#if USE_ARENAS && MALLOC_DEBUG > 1
- if(ar_ptr != &main_arena) {
- heap_info *heap;
- (void)mutex_lock(&ar_ptr->mutex);
- heap = heap_for_ptr(top(ar_ptr));
- while(heap) { dump_heap(heap); heap = heap->prev; }
- (void)mutex_unlock(&ar_ptr->mutex);
- }
-#endif
- ar_ptr = ar_ptr->next;
- if(ar_ptr == &main_arena) break;
- }
-#if HAVE_MMAP
- fprintf(stderr, "Total (incl. mmap):\n");
-#else
- fprintf(stderr, "Total:\n");
-#endif
- fprintf(stderr, "system bytes = %10u\n", system_b);
- fprintf(stderr, "in use bytes = %10u\n", in_use_b);
-#ifdef NO_THREADS
- fprintf(stderr, "max system bytes = %10u\n", (unsigned int)max_total_mem);
-#endif
-#if HAVE_MMAP
- fprintf(stderr, "max mmap regions = %10u\n", (unsigned int)max_n_mmaps);
- fprintf(stderr, "max mmap bytes = %10lu\n", max_mmapped_mem);
-#endif
-#if THREAD_STATS
- fprintf(stderr, "heaps created = %10d\n", stat_n_heaps);
- fprintf(stderr, "locked directly = %10ld\n", stat_lock_direct);
- fprintf(stderr, "locked in loop = %10ld\n", stat_lock_loop);
- fprintf(stderr, "locked waiting = %10ld\n", stat_lock_wait);
- fprintf(stderr, "locked total = %10ld\n",
- stat_lock_direct + stat_lock_loop + stat_lock_wait);
-#endif
-}
-
-/*
- mallinfo returns a copy of updated current mallinfo.
- The information reported is for the arena last used by the thread.
-*/
-
-struct mallinfo mALLINFo()
-{
- struct mallinfo mi;
- Void_t *vptr = NULL;
-
-#ifndef NO_THREADS
- tsd_getspecific(arena_key, vptr);
- if(vptr == ATFORK_ARENA_PTR)
- vptr = (Void_t*)&main_arena;
-#endif
- malloc_update_mallinfo((vptr ? (arena*)vptr : &main_arena), &mi);
- return mi;
-}
-
-
-
-
-/*
- mallopt:
-
- mallopt is the general SVID/XPG interface to tunable parameters.
- The format is to provide a (parameter-number, parameter-value) pair.
- mallopt then sets the corresponding parameter to the argument
- value if it can (i.e., so long as the value is meaningful),
- and returns 1 if successful else 0.
-
- See descriptions of tunable parameters above.
-
-*/
-
-#if __STD_C
-int mALLOPt(int param_number, int value)
-#else
-int mALLOPt(param_number, value) int param_number; int value;
-#endif
-{
- switch(param_number)
- {
- case M_TRIM_THRESHOLD:
- trim_threshold = value; return 1;
- case M_TOP_PAD:
- top_pad = value; return 1;
- case M_MMAP_THRESHOLD:
-#if USE_ARENAS
- /* Forbid setting the threshold too high. */
- if((unsigned long)value > HEAP_MAX_SIZE/2) return 0;
-#endif
- mmap_threshold = value; return 1;
- case M_MMAP_MAX:
-#if HAVE_MMAP
- n_mmaps_max = value; return 1;
-#else
- if (value != 0) return 0; else n_mmaps_max = value; return 1;
-#endif
- case M_CHECK_ACTION:
- check_action = value; return 1;
-
- default:
- return 0;
- }
-}
-
-
-
-/* Get/set state: malloc_get_state() records the current state of all
- malloc variables (_except_ for the actual heap contents and `hook'
- function pointers) in a system dependent, opaque data structure.
- This data structure is dynamically allocated and can be free()d
- after use. malloc_set_state() restores the state of all malloc
- variables to the previously obtained state. This is especially
- useful when using this malloc as part of a shared library, and when
- the heap contents are saved/restored via some other method. The
- primary example for this is GNU Emacs with its `dumping' procedure.
- `Hook' function pointers are never saved or restored by these
- functions, with two exceptions: If malloc checking was in use when
- malloc_get_state() was called, then malloc_set_state() calls
- __malloc_check_init() if possible; if malloc checking was not in
- use in the recorded state but the user requested malloc checking,
- then the hooks are reset to 0. */
-
-#define MALLOC_STATE_MAGIC 0x444c4541l
-#define MALLOC_STATE_VERSION (0*0x100l + 1l) /* major*0x100 + minor */
-
-struct malloc_state {
- long magic;
- long version;
- mbinptr av[NAV * 2 + 2];
- char* sbrk_base;
- int sbrked_mem_bytes;
- unsigned long trim_threshold;
- unsigned long top_pad;
- unsigned int n_mmaps_max;
- unsigned long mmap_threshold;
- int check_action;
- unsigned long max_sbrked_mem;
- unsigned long max_total_mem;
- unsigned int n_mmaps;
- unsigned int max_n_mmaps;
- unsigned long mmapped_mem;
- unsigned long max_mmapped_mem;
- int using_malloc_checking;
-};
-
-Void_t*
-mALLOC_GET_STATe()
-{
- struct malloc_state* ms;
- int i;
- mbinptr b;
-
- ms = (struct malloc_state*)mALLOc(sizeof(*ms));
- if (!ms)
- return 0;
- (void)mutex_lock(&main_arena.mutex);
- ms->magic = MALLOC_STATE_MAGIC;
- ms->version = MALLOC_STATE_VERSION;
- ms->av[0] = main_arena.av[0];
- ms->av[1] = main_arena.av[1];
- for(i=0; i<NAV; i++) {
- b = bin_at(&main_arena, i);
- if(first(b) == b)
- ms->av[2*i+2] = ms->av[2*i+3] = 0; /* empty bin (or initial top) */
- else {
- ms->av[2*i+2] = first(b);
- ms->av[2*i+3] = last(b);
- }
- }
- ms->sbrk_base = sbrk_base;
- ms->sbrked_mem_bytes = sbrked_mem;
- ms->trim_threshold = trim_threshold;
- ms->top_pad = top_pad;
- ms->n_mmaps_max = n_mmaps_max;
- ms->mmap_threshold = mmap_threshold;
- ms->check_action = check_action;
- ms->max_sbrked_mem = max_sbrked_mem;
-#ifdef NO_THREADS
- ms->max_total_mem = max_total_mem;
-#else
- ms->max_total_mem = 0;
-#endif
- ms->n_mmaps = n_mmaps;
- ms->max_n_mmaps = max_n_mmaps;
- ms->mmapped_mem = mmapped_mem;
- ms->max_mmapped_mem = max_mmapped_mem;
-#if defined _LIBC || defined MALLOC_HOOKS
- ms->using_malloc_checking = using_malloc_checking;
-#else
- ms->using_malloc_checking = 0;
-#endif
- (void)mutex_unlock(&main_arena.mutex);
- return (Void_t*)ms;
-}
-
-int
-#if __STD_C
-mALLOC_SET_STATe(Void_t* msptr)
-#else
-mALLOC_SET_STATe(msptr) Void_t* msptr;
-#endif
-{
- struct malloc_state* ms = (struct malloc_state*)msptr;
- int i;
- mbinptr b;
-
-#if defined _LIBC || defined MALLOC_HOOKS
- disallow_malloc_check = 1;
-#endif
- ptmalloc_init();
- if(ms->magic != MALLOC_STATE_MAGIC) return -1;
- /* Must fail if the major version is too high. */
- if((ms->version & ~0xffl) > (MALLOC_STATE_VERSION & ~0xffl)) return -2;
- (void)mutex_lock(&main_arena.mutex);
- main_arena.av[0] = ms->av[0];
- main_arena.av[1] = ms->av[1];
- for(i=0; i<NAV; i++) {
- b = bin_at(&main_arena, i);
- if(ms->av[2*i+2] == 0)
- first(b) = last(b) = b;
- else {
- first(b) = ms->av[2*i+2];
- last(b) = ms->av[2*i+3];
- if(i > 0) {
- /* Make sure the links to the `av'-bins in the heap are correct. */
- first(b)->bk = b;
- last(b)->fd = b;
- }
- }
- }
- sbrk_base = ms->sbrk_base;
- sbrked_mem = ms->sbrked_mem_bytes;
- trim_threshold = ms->trim_threshold;
- top_pad = ms->top_pad;
- n_mmaps_max = ms->n_mmaps_max;
- mmap_threshold = ms->mmap_threshold;
- check_action = ms->check_action;
- max_sbrked_mem = ms->max_sbrked_mem;
-#ifdef NO_THREADS
- max_total_mem = ms->max_total_mem;
-#endif
- n_mmaps = ms->n_mmaps;
- max_n_mmaps = ms->max_n_mmaps;
- mmapped_mem = ms->mmapped_mem;
- max_mmapped_mem = ms->max_mmapped_mem;
- /* add version-dependent code here */
- if (ms->version >= 1) {
-#if defined _LIBC || defined MALLOC_HOOKS
- /* Check whether it is safe to enable malloc checking, or whether
- it is necessary to disable it. */
- if (ms->using_malloc_checking && !using_malloc_checking &&
- !disallow_malloc_check)
- __malloc_check_init ();
- else if (!ms->using_malloc_checking && using_malloc_checking) {
- __malloc_hook = 0;
- __free_hook = 0;
- __realloc_hook = 0;
- __memalign_hook = 0;
- using_malloc_checking = 0;
- }
-#endif
- }
-
- (void)mutex_unlock(&main_arena.mutex);
- return 0;
-}
-
-
-
-#if defined _LIBC || defined MALLOC_HOOKS
-
-/* A simple, standard set of debugging hooks. Overhead is `only' one
- byte per chunk; still this will catch most cases of double frees or
- overruns. The goal here is to avoid obscure crashes due to invalid
- usage, unlike in the MALLOC_DEBUG code. */
-
-#define MAGICBYTE(p) ( ( ((size_t)p >> 3) ^ ((size_t)p >> 11)) & 0xFF )
-
-/* Instrument a chunk with overrun detector byte(s) and convert it
- into a user pointer with requested size sz. */
-
-static Void_t*
-internal_function
-#if __STD_C
-chunk2mem_check(mchunkptr p, size_t sz)
-#else
-chunk2mem_check(p, sz) mchunkptr p; size_t sz;
-#endif
-{
- unsigned char* m_ptr = (unsigned char*)BOUNDED_N(chunk2mem(p), sz);
- size_t i;
-
- for(i = chunksize(p) - (chunk_is_mmapped(p) ? 2*SIZE_SZ+1 : SIZE_SZ+1);
- i > sz;
- i -= 0xFF) {
- if(i-sz < 0x100) {
- m_ptr[i] = (unsigned char)(i-sz);
- break;
- }
- m_ptr[i] = 0xFF;
- }
- m_ptr[sz] = MAGICBYTE(p);
- return (Void_t*)m_ptr;
-}
-
-/* Convert a pointer to be free()d or realloc()ed to a valid chunk
- pointer. If the provided pointer is not valid, return NULL. */
-
-static mchunkptr
-internal_function
-#if __STD_C
-mem2chunk_check(Void_t* mem)
-#else
-mem2chunk_check(mem) Void_t* mem;
-#endif
-{
- mchunkptr p;
- INTERNAL_SIZE_T sz, c;
- unsigned char magic;
-
- p = mem2chunk(mem);
- if(!aligned_OK(p)) return NULL;
- if( (char*)p>=sbrk_base && (char*)p<(sbrk_base+sbrked_mem) ) {
- /* Must be a chunk in conventional heap memory. */
- if(chunk_is_mmapped(p) ||
- ( (sz = chunksize(p)), ((char*)p + sz)>=(sbrk_base+sbrked_mem) ) ||
- sz<MINSIZE || sz&MALLOC_ALIGN_MASK || !inuse(p) ||
- ( !prev_inuse(p) && (p->prev_size&MALLOC_ALIGN_MASK ||
- (long)prev_chunk(p)<(long)sbrk_base ||
- next_chunk(prev_chunk(p))!=p) ))
- return NULL;
- magic = MAGICBYTE(p);
- for(sz += SIZE_SZ-1; (c = ((unsigned char*)p)[sz]) != magic; sz -= c) {
- if(c<=0 || sz<(c+2*SIZE_SZ)) return NULL;
- }
- ((unsigned char*)p)[sz] ^= 0xFF;
- } else {
- unsigned long offset, page_mask = malloc_getpagesize-1;
-
- /* mmap()ed chunks have MALLOC_ALIGNMENT or higher power-of-two
- alignment relative to the beginning of a page. Check this
- first. */
- offset = (unsigned long)mem & page_mask;
- if((offset!=MALLOC_ALIGNMENT && offset!=0 && offset!=0x10 &&
- offset!=0x20 && offset!=0x40 && offset!=0x80 && offset!=0x100 &&
- offset!=0x200 && offset!=0x400 && offset!=0x800 && offset!=0x1000 &&
- offset<0x2000) ||
- !chunk_is_mmapped(p) || (p->size & PREV_INUSE) ||
- ( (((unsigned long)p - p->prev_size) & page_mask) != 0 ) ||
- ( (sz = chunksize(p)), ((p->prev_size + sz) & page_mask) != 0 ) )
- return NULL;
- magic = MAGICBYTE(p);
- for(sz -= 1; (c = ((unsigned char*)p)[sz]) != magic; sz -= c) {
- if(c<=0 || sz<(c+2*SIZE_SZ)) return NULL;
- }
- ((unsigned char*)p)[sz] ^= 0xFF;
- }
- return p;
-}
-
-/* Check for corruption of the top chunk, and try to recover if
- necessary. */
-
-static int
-internal_function
-#if __STD_C
-top_check(void)
-#else
-top_check()
-#endif
-{
- mchunkptr t = top(&main_arena);
- char* brk, * new_brk;
- INTERNAL_SIZE_T front_misalign, sbrk_size;
- unsigned long pagesz = malloc_getpagesize;
-
- if((char*)t + chunksize(t) == sbrk_base + sbrked_mem ||
- t == initial_top(&main_arena)) return 0;
-
- if(check_action & 1)
- fprintf(stderr, "malloc: top chunk is corrupt\n");
- if(check_action & 2)
- abort();
-
- /* Try to set up a new top chunk. */
- brk = MORECORE(0);
- front_misalign = (unsigned long)chunk2mem(brk) & MALLOC_ALIGN_MASK;
- if (front_misalign > 0)
- front_misalign = MALLOC_ALIGNMENT - front_misalign;
- sbrk_size = front_misalign + top_pad + MINSIZE;
- sbrk_size += pagesz - ((unsigned long)(brk + sbrk_size) & (pagesz - 1));
- new_brk = (char*)(MORECORE (sbrk_size));
- if (new_brk == (char*)(MORECORE_FAILURE)) return -1;
- sbrked_mem = (new_brk - sbrk_base) + sbrk_size;
-
- top(&main_arena) = (mchunkptr)(brk + front_misalign);
- set_head(top(&main_arena), (sbrk_size - front_misalign) | PREV_INUSE);
-
- return 0;
-}
-
-static Void_t*
-#if __STD_C
-malloc_check(size_t sz, const Void_t *caller)
-#else
-malloc_check(sz, caller) size_t sz; const Void_t *caller;
-#endif
-{
- mchunkptr victim;
- INTERNAL_SIZE_T nb;
-
- if(request2size(sz+1, nb))
- return 0;
- (void)mutex_lock(&main_arena.mutex);
- victim = (top_check() >= 0) ? chunk_alloc(&main_arena, nb) : NULL;
- (void)mutex_unlock(&main_arena.mutex);
- if(!victim) return NULL;
- return chunk2mem_check(victim, sz);
-}
-
-static void
-#if __STD_C
-free_check(Void_t* mem, const Void_t *caller)
-#else
-free_check(mem, caller) Void_t* mem; const Void_t *caller;
-#endif
-{
- mchunkptr p;
-
- if(!mem) return;
- (void)mutex_lock(&main_arena.mutex);
- p = mem2chunk_check(mem);
- if(!p) {
- (void)mutex_unlock(&main_arena.mutex);
- if(check_action & 1)
- fprintf(stderr, "free(): invalid pointer %p!\n", mem);
- if(check_action & 2)
- abort();
- return;
- }
-#if HAVE_MMAP
- if (chunk_is_mmapped(p)) {
- (void)mutex_unlock(&main_arena.mutex);
- munmap_chunk(p);
- return;
- }
-#endif
-#if 0 /* Erase freed memory. */
- memset(mem, 0, chunksize(p) - (SIZE_SZ+1));
-#endif
- chunk_free(&main_arena, p);
- (void)mutex_unlock(&main_arena.mutex);
-}
-
-static Void_t*
-#if __STD_C
-realloc_check(Void_t* oldmem, size_t bytes, const Void_t *caller)
-#else
-realloc_check(oldmem, bytes, caller)
- Void_t* oldmem; size_t bytes; const Void_t *caller;
-#endif
-{
- mchunkptr oldp, newp;
- INTERNAL_SIZE_T nb, oldsize;
-
- if (oldmem == 0) return malloc_check(bytes, NULL);
- (void)mutex_lock(&main_arena.mutex);
- oldp = mem2chunk_check(oldmem);
- if(!oldp) {
- (void)mutex_unlock(&main_arena.mutex);
- if(check_action & 1)
- fprintf(stderr, "realloc(): invalid pointer %p!\n", oldmem);
- if(check_action & 2)
- abort();
- return malloc_check(bytes, NULL);
- }
- oldsize = chunksize(oldp);
-
- if(request2size(bytes+1, nb)) {
- (void)mutex_unlock(&main_arena.mutex);
- return 0;
- }
-
-#if HAVE_MMAP
- if (chunk_is_mmapped(oldp)) {
-#if HAVE_MREMAP
- newp = mremap_chunk(oldp, nb);
- if(!newp) {
-#endif
- /* Note the extra SIZE_SZ overhead. */
- if(oldsize - SIZE_SZ >= nb) newp = oldp; /* do nothing */
- else {
- /* Must alloc, copy, free. */
- newp = (top_check() >= 0) ? chunk_alloc(&main_arena, nb) : NULL;
- if (newp) {
- MALLOC_COPY(BOUNDED_N(chunk2mem(newp), nb),
- oldmem, oldsize - 2*SIZE_SZ, 0);
- munmap_chunk(oldp);
- }
- }
-#if HAVE_MREMAP
- }
-#endif
- } else {
-#endif /* HAVE_MMAP */
- newp = (top_check() >= 0) ?
- chunk_realloc(&main_arena, oldp, oldsize, nb) : NULL;
-#if 0 /* Erase freed memory. */
- nb = chunksize(newp);
- if(oldp<newp || oldp>=chunk_at_offset(newp, nb)) {
- memset((char*)oldmem + 2*sizeof(mbinptr), 0,
- oldsize - (2*sizeof(mbinptr)+2*SIZE_SZ+1));
- } else if(nb > oldsize+SIZE_SZ) {
- memset((char*)BOUNDED_N(chunk2mem(newp), bytes) + oldsize,
- 0, nb - (oldsize+SIZE_SZ));
- }
-#endif
-#if HAVE_MMAP
- }
-#endif
- (void)mutex_unlock(&main_arena.mutex);
-
- if(!newp) return NULL;
- return chunk2mem_check(newp, bytes);
-}
-
-static Void_t*
-#if __STD_C
-memalign_check(size_t alignment, size_t bytes, const Void_t *caller)
-#else
-memalign_check(alignment, bytes, caller)
- size_t alignment; size_t bytes; const Void_t *caller;
-#endif
-{
- INTERNAL_SIZE_T nb;
- mchunkptr p;
-
- if (alignment <= MALLOC_ALIGNMENT) return malloc_check(bytes, NULL);
- if (alignment < MINSIZE) alignment = MINSIZE;
-
- if(request2size(bytes+1, nb))
- return 0;
- (void)mutex_lock(&main_arena.mutex);
- p = (top_check() >= 0) ? chunk_align(&main_arena, nb, alignment) : NULL;
- (void)mutex_unlock(&main_arena.mutex);
- if(!p) return NULL;
- return chunk2mem_check(p, bytes);
-}
-
-#ifndef NO_THREADS
-
-/* The following hooks are used when the global initialization in
- ptmalloc_init() hasn't completed yet. */
-
-static Void_t*
-#if __STD_C
-malloc_starter(size_t sz, const Void_t *caller)
-#else
-malloc_starter(sz, caller) size_t sz; const Void_t *caller;
-#endif
-{
- INTERNAL_SIZE_T nb;
- mchunkptr victim;
-
- if(request2size(sz, nb))
- return 0;
- victim = chunk_alloc(&main_arena, nb);
-
- return victim ? BOUNDED_N(chunk2mem(victim), sz) : 0;
-}
-
-static void
-#if __STD_C
-free_starter(Void_t* mem, const Void_t *caller)
-#else
-free_starter(mem, caller) Void_t* mem; const Void_t *caller;
-#endif
-{
- mchunkptr p;
-
- if(!mem) return;
- p = mem2chunk(mem);
-#if HAVE_MMAP
- if (chunk_is_mmapped(p)) {
- munmap_chunk(p);
- return;
- }
-#endif
- chunk_free(&main_arena, p);
-}
-
-/* The following hooks are used while the `atfork' handling mechanism
- is active. */
-
-static Void_t*
-#if __STD_C
-malloc_atfork (size_t sz, const Void_t *caller)
-#else
-malloc_atfork(sz, caller) size_t sz; const Void_t *caller;
-#endif
-{
- Void_t *vptr = NULL;
- INTERNAL_SIZE_T nb;
- mchunkptr victim;
-
- tsd_getspecific(arena_key, vptr);
- if(vptr == ATFORK_ARENA_PTR) {
- /* We are the only thread that may allocate at all. */
- if(save_malloc_hook != malloc_check) {
- if(request2size(sz, nb))
- return 0;
- victim = chunk_alloc(&main_arena, nb);
- return victim ? BOUNDED_N(chunk2mem(victim), sz) : 0;
- } else {
- if(top_check()<0 || request2size(sz+1, nb))
- return 0;
- victim = chunk_alloc(&main_arena, nb);
- return victim ? chunk2mem_check(victim, sz) : 0;
- }
- } else {
- /* Suspend the thread until the `atfork' handlers have completed.
- By that time, the hooks will have been reset as well, so that
- mALLOc() can be used again. */
- (void)mutex_lock(&list_lock);
- (void)mutex_unlock(&list_lock);
- return mALLOc(sz);
- }
-}
-
-static void
-#if __STD_C
-free_atfork(Void_t* mem, const Void_t *caller)
-#else
-free_atfork(mem, caller) Void_t* mem; const Void_t *caller;
-#endif
-{
- Void_t *vptr = NULL;
- arena *ar_ptr;
- mchunkptr p; /* chunk corresponding to mem */
-
- if (mem == 0) /* free(0) has no effect */
- return;
-
- p = mem2chunk(mem); /* do not bother to replicate free_check here */
-
-#if HAVE_MMAP
- if (chunk_is_mmapped(p)) /* release mmapped memory. */
- {
- munmap_chunk(p);
- return;
- }
-#endif
-
- ar_ptr = arena_for_ptr(p);
- tsd_getspecific(arena_key, vptr);
- if(vptr != ATFORK_ARENA_PTR)
- (void)mutex_lock(&ar_ptr->mutex);
- chunk_free(ar_ptr, p);
- if(vptr != ATFORK_ARENA_PTR)
- (void)mutex_unlock(&ar_ptr->mutex);
-}
-
-#endif /* !defined NO_THREADS */
-
-#endif /* defined _LIBC || defined MALLOC_HOOKS */
-
-
-
-#ifdef _LIBC
-
-/* default method of getting more storage */
-__malloc_ptr_t
-__default_morecore (int inc)
-{
- __malloc_ptr_t result = (__malloc_ptr_t)sbrk (inc);
- if (result == (__malloc_ptr_t)-1)
- return NULL;
- return result;
-}
-
-/* We need a wrapper function for one of the additions of POSIX. */
-int
-__posix_memalign (void **memptr, size_t alignment, size_t size)
-{
- void *mem;
-
- /* Test whether the ALIGNMENT argument is valid. It must be a power
- of two multiple of sizeof (void *). */
- if (alignment % sizeof (void *) != 0 || (alignment & (alignment - 1)) != 0)
- return EINVAL;
-
- mem = __libc_memalign (alignment, size);
-
- if (mem != NULL)
- {
- *memptr = mem;
- return 0;
- }
-
- return ENOMEM;
-}
-weak_alias (__posix_memalign, posix_memalign)
-
-weak_alias (__libc_calloc, __calloc) weak_alias (__libc_calloc, calloc)
-weak_alias (__libc_free, __cfree) weak_alias (__libc_free, cfree)
-weak_alias (__libc_free, __free) weak_alias (__libc_free, free)
-weak_alias (__libc_malloc, __malloc) weak_alias (__libc_malloc, malloc)
-weak_alias (__libc_memalign, __memalign) weak_alias (__libc_memalign, memalign)
-weak_alias (__libc_realloc, __realloc) weak_alias (__libc_realloc, realloc)
-weak_alias (__libc_valloc, __valloc) weak_alias (__libc_valloc, valloc)
-weak_alias (__libc_pvalloc, __pvalloc) weak_alias (__libc_pvalloc, pvalloc)
-weak_alias (__libc_mallinfo, __mallinfo) weak_alias (__libc_mallinfo, mallinfo)
-weak_alias (__libc_mallopt, __mallopt) weak_alias (__libc_mallopt, mallopt)
-
-weak_alias (__malloc_stats, malloc_stats)
-weak_alias (__malloc_usable_size, malloc_usable_size)
-weak_alias (__malloc_trim, malloc_trim)
-weak_alias (__malloc_get_state, malloc_get_state)
-weak_alias (__malloc_set_state, malloc_set_state)
-#endif
-
-/*
-
-History:
-
- V2.6.4-pt3 Thu Feb 20 1997 Wolfram Gloger (wmglo@dent.med.uni-muenchen.de)
- * Added malloc_get/set_state() (mainly for use in GNU emacs),
- using interface from Marcus Daniels
- * All parameters are now adjustable via environment variables
-
- V2.6.4-pt2 Sat Dec 14 1996 Wolfram Gloger (wmglo@dent.med.uni-muenchen.de)
- * Added debugging hooks
- * Fixed possible deadlock in realloc() when out of memory
- * Don't pollute namespace in glibc: use __getpagesize, __mmap, etc.
-
- V2.6.4-pt Wed Dec 4 1996 Wolfram Gloger (wmglo@dent.med.uni-muenchen.de)
- * Very minor updates from the released 2.6.4 version.
- * Trimmed include file down to exported data structures.
- * Changes from H.J. Lu for glibc-2.0.
-
- V2.6.3i-pt Sep 16 1996 Wolfram Gloger (wmglo@dent.med.uni-muenchen.de)
- * Many changes for multiple threads
- * Introduced arenas and heaps
-
- V2.6.3 Sun May 19 08:17:58 1996 Doug Lea (dl at gee)
- * Added pvalloc, as recommended by H.J. Liu
- * Added 64bit pointer support mainly from Wolfram Gloger
- * Added anonymously donated WIN32 sbrk emulation
- * Malloc, calloc, getpagesize: add optimizations from Raymond Nijssen
- * malloc_extend_top: fix mask error that caused wastage after
- foreign sbrks
- * Add linux mremap support code from HJ Liu
-
- V2.6.2 Tue Dec 5 06:52:55 1995 Doug Lea (dl at gee)
- * Integrated most documentation with the code.
- * Add support for mmap, with help from
- Wolfram Gloger (Gloger@lrz.uni-muenchen.de).
- * Use last_remainder in more cases.
- * Pack bins using idea from colin@nyx10.cs.du.edu
- * Use ordered bins instead of best-fit threshold
- * Eliminate block-local decls to simplify tracing and debugging.
- * Support another case of realloc via move into top
- * Fix error occurring when initial sbrk_base not word-aligned.
- * Rely on page size for units instead of SBRK_UNIT to
- avoid surprises about sbrk alignment conventions.
- * Add mallinfo, mallopt. Thanks to Raymond Nijssen
- (raymond@es.ele.tue.nl) for the suggestion.
- * Add `pad' argument to malloc_trim and top_pad mallopt parameter.
- * More precautions for cases where other routines call sbrk,
- courtesy of Wolfram Gloger (Gloger@lrz.uni-muenchen.de).
- * Added macros etc., allowing use in linux libc from
- H.J. Lu (hjl@gnu.ai.mit.edu)
- * Inverted this history list
-
- V2.6.1 Sat Dec 2 14:10:57 1995 Doug Lea (dl at gee)
- * Re-tuned and fixed to behave more nicely with V2.6.0 changes.
- * Removed all preallocation code since under current scheme
- the work required to undo bad preallocations exceeds
- the work saved in good cases for most test programs.
- * No longer use return list or unconsolidated bins since
- no scheme using them consistently outperforms those that don't
- given above changes.
- * Use best fit for very large chunks to prevent some worst-cases.
- * Added some support for debugging
-
- V2.6.0 Sat Nov 4 07:05:23 1995 Doug Lea (dl at gee)
- * Removed footers when chunks are in use. Thanks to
- Paul Wilson (wilson@cs.texas.edu) for the suggestion.
-
- V2.5.4 Wed Nov 1 07:54:51 1995 Doug Lea (dl at gee)
- * Added malloc_trim, with help from Wolfram Gloger
- (wmglo@Dent.MED.Uni-Muenchen.DE).
-
- V2.5.3 Tue Apr 26 10:16:01 1994 Doug Lea (dl at g)
-
- V2.5.2 Tue Apr 5 16:20:40 1994 Doug Lea (dl at g)
- * realloc: try to expand in both directions
- * malloc: swap order of clean-bin strategy;
- * realloc: only conditionally expand backwards
- * Try not to scavenge used bins
- * Use bin counts as a guide to preallocation
- * Occasionally bin return list chunks in first scan
- * Add a few optimizations from colin@nyx10.cs.du.edu
-
- V2.5.1 Sat Aug 14 15:40:43 1993 Doug Lea (dl at g)
- * faster bin computation & slightly different binning
- * merged all consolidations to one part of malloc proper
- (eliminating old malloc_find_space & malloc_clean_bin)
- * Scan 2 returns chunks (not just 1)
- * Propagate failure in realloc if malloc returns 0
- * Add stuff to allow compilation on non-ANSI compilers
- from kpv@research.att.com
-
- V2.5 Sat Aug 7 07:41:59 1993 Doug Lea (dl at g.oswego.edu)
- * removed potential for odd address access in prev_chunk
- * removed dependency on getpagesize.h
- * misc cosmetics and a bit more internal documentation
- * anticosmetics: mangled names in macros to evade debugger strangeness
- * tested on sparc, hp-700, dec-mips, rs6000
- with gcc & native cc (hp, dec only) allowing
- Detlefs & Zorn comparison study (in SIGPLAN Notices.)
-
- Trial version Fri Aug 28 13:14:29 1992 Doug Lea (dl at g.oswego.edu)
- * Based loosely on libg++-1.2X malloc. (It retains some of the overall
- structure of old version, but most details differ.)
-
-*/