diff options
Diffstat (limited to 'newlib/libc/stdio/fputs.c')
| -rw-r--r-- | newlib/libc/stdio/fputs.c | 46 |
1 files changed, 42 insertions, 4 deletions
diff --git a/newlib/libc/stdio/fputs.c b/newlib/libc/stdio/fputs.c index 7c1888f93..75f65d96e 100644 --- a/newlib/libc/stdio/fputs.c +++ b/newlib/libc/stdio/fputs.c @@ -17,38 +17,70 @@ /* FUNCTION -<<fputs>>---write a character string in a file or stream +<<fputs>>, <<fputs_unlocked>>---write a character string in a file or stream INDEX fputs INDEX + fputs_unlocked +INDEX _fputs_r +INDEX + _fputs_unlocked_r ANSI_SYNOPSIS #include <stdio.h> int fputs(const char *restrict <[s]>, FILE *restrict <[fp]>); + #define _GNU_SOURCE + #include <stdio.h> + int fputs_unlocked(const char *restrict <[s]>, FILE *restrict <[fp]>); + #include <stdio.h> int _fputs_r(struct _reent *<[ptr]>, const char *restrict <[s]>, FILE *restrict <[fp]>); + #include <stdio.h> + int _fputs_unlocked_r(struct _reent *<[ptr]>, const char *restrict <[s]>, FILE *restrict <[fp]>); + TRAD_SYNOPSIS #include <stdio.h> int fputs(<[s]>, <[fp]>) char *<[s]>; FILE *<[fp]>; + #define _GNU_SOURCE + #include <stdio.h> + int fputs_unlocked(<[s]>, <[fp]>) + char *<[s]>; + FILE *<[fp]>; + #include <stdio.h> int _fputs_r(<[ptr]>, <[s]>, <[fp]>) struct _reent *<[ptr]>; char *<[s]>; FILE *<[fp]>; + #include <stdio.h> + int _fputs_unlocked_r(<[ptr]>, <[s]>, <[fp]>) + struct _reent *<[ptr]>; + char *<[s]>; + FILE *<[fp]>; + DESCRIPTION <<fputs>> writes the string at <[s]> (but without the trailing null) to the file or stream identified by <[fp]>. -<<_fputs_r>> is simply the reentrant version of <<fputs>> that takes -an additional reentrant struct pointer argument: <[ptr]>. +<<fputs_unlocked>> is a non-thread-safe version of <<fputs>>. +<<fputs_unlocked>> may only safely be used within a scope +protected by flockfile() (or ftrylockfile()) and funlockfile(). This +function may safely be used in a multi-threaded program if and only +if they are called while the invoking thread owns the (FILE *) +object, as is the case after a successful call to the flockfile() or +ftrylockfile() functions. If threads are disabled, then +<<fputs_unlocked>> is equivalent to <<fputs>>. + +<<_fputs_r>> and <<_fputs_unlocked_r>> are simply reentrant versions of the +above that take an additional reentrant struct pointer argument: <[ptr]>. RETURNS If successful, the result is <<0>>; otherwise, the result is <<EOF>>. @@ -57,6 +89,8 @@ PORTABILITY ANSI C requires <<fputs>>, but does not specify that the result on success must be <<0>>; any non-negative value is permitted. +<<fputs_unlocked>> is a GNU extension. + Supporting OS subroutines required: <<close>>, <<fstat>>, <<isatty>>, <<lseek>>, <<read>>, <<sbrk>>, <<write>>. */ @@ -67,10 +101,14 @@ Supporting OS subroutines required: <<close>>, <<fstat>>, <<isatty>>, #include "fvwrite.h" #include "local.h" +#ifdef __IMPL_UNLOCKED__ +#define _fputs_r _fputs_unlocked_r +#define fputs fputs_unlocked +#endif + /* * Write the given string to the given file. */ - int _DEFUN(_fputs_r, (ptr, s, fp), struct _reent * ptr _AND |