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author | Mark Mitchell <mark@codesourcery.com> | 2006-03-31 01:17:05 +0000 |
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committer | Mark Mitchell <mark@codesourcery.com> | 2006-03-31 01:17:05 +0000 |
commit | ec799b1781b76d07ec9b52306685ca2f42a19991 (patch) | |
tree | be153756e70a968f51c44e11fe59471dda1e16cd /include | |
parent | 6780f7e742cc491233c56be12d0077397d1c9d61 (diff) | |
download | cygnal-ec799b1781b76d07ec9b52306685ca2f42a19991.tar.gz cygnal-ec799b1781b76d07ec9b52306685ca2f42a19991.tar.bz2 cygnal-ec799b1781b76d07ec9b52306685ca2f42a19991.zip |
* libiberty/configure.ac: Add cygpath for mingw hosts.
* libiberty.configure: Rebuilt.
* libiberty/Makefile.in: Add cygpath.
* libiberty/cygpath.c: New.
* include/libiberty.h (pex_write_input): New declaration.
* libiberty/pex-common.c (pex_write_input): New function.
* libiberty/pexecute.txh (pex_write_input): Document it.
* libiberty/pex-common.h (struct pex_funcs): New function ptr fdopenw.
* libiberty/pex-unix.c (pex_unix_fdopenw): New function.
(funcs): List it as our fdopenw function.
* libiberty/pex-win32.c (pex_win32_fdopenw): New function.
(funcs): List it as our fdopenw function.
* libiberty/pex-djgpp.c (funcs): Leave fdopenw null.
* libiberty/pex-msdos (funcs): Same.
* libiberty/functions.texi: Regenerated.
* libiberty/pex-common.h (struct pex_obj): Doc fixes.
* libiberty/functions.texi: Regenerate.
Diffstat (limited to 'include')
-rw-r--r-- | include/libiberty.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/include/libiberty.h b/include/libiberty.h index c264cb2ab..6fdc6e9d0 100644 --- a/include/libiberty.h +++ b/include/libiberty.h @@ -448,6 +448,33 @@ extern const char *pex_run (struct pex_obj *obj, int flags, const char *outname, const char *errname, int *err); +/* Return a `FILE' pointer FP for the standard input of the first + program in the pipeline; FP is opened for writing. You must have + passed `PEX_USE_PIPES' to the `pex_init' call that returned OBJ. + You must close FP yourself with `fclose' to indicate that the + pipeline's input is complete. + + The file descriptor underlying FP is marked not to be inherited by + child processes. + + This call is not supported on systems which do not support pipes; + it returns with an error. (We could implement it by writing a + temporary file, but then you would need to write all your data and + close FP before your first call to `pex_run' -- and that wouldn't + work on systems that do support pipes: the pipe would fill up, and + you would block. So there isn't any easy way to conceal the + differences between the two types of systems.) + + If you call both `pex_write_input' and `pex_read_output', be + careful to avoid deadlock. If the output pipe fills up, so that + each program in the pipeline is waiting for the next to read more + data, and you fill the input pipe by writing more data to FP, then + there is no way to make progress: the only process that could read + data from the output pipe is you, but you are blocked on the input + pipe. */ + +extern FILE *pex_write_input (struct pex_obj *obj, int binary); + /* Read the standard output of the last program to be executed. pex_run can not be called after this. BINARY should be non-zero if the file should be opened in binary mode; this is ignored on Unix. |