mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-28 04:03:35 +08:00
a91d3cd37b
* libio/Makefile (headers): Add stdio_ext.h. (routines): Add __fbufsize, __freading, __fwriting, __freadable, __fwritable, __flbf, __fpurge, __fpending, and __fsetlocking. * libio/Versions [libc] (GLIBC_2.2): Add __fbufsize, __freading, __fwriting, __freadable, __fwritable, __flbf, __fpurge, __fpending, __fsetlocking, and _flushlbf. * libio/__fbufsize.c: New file. * libio/__flbf.c: New file. * libio/__fpending.c: New file. * libio/__fpurge.c: New file. * libio/__freadable.c: New file. * libio/__freading.c: New file. * libio/__fsetlocking.c: New file. * libio/__fwritable.c: New file. * libio/__fwriting.c: New file. * libio/stdio_ext.h: New file. * libio/genops.c (_IO_flush_all_linebuffered): Add alias _flushlbf. * libio/libio.h (_IO_USER_LOCK): Define.
106 lines
2.3 KiB
C
106 lines
2.3 KiB
C
/* lockfile - Handle locking and unlocking of stream.
|
|
Copyright (C) 1996, 1998, 2000 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public License as
|
|
published by the Free Software Foundation; either version 2 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
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If not,
|
|
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
#include <bits/libc-lock.h>
|
|
#include <stdio.h>
|
|
#include <pthread.h>
|
|
|
|
#ifdef USE_IN_LIBIO
|
|
#include "../libio/libioP.h"
|
|
#endif
|
|
|
|
void
|
|
__flockfile (FILE *stream)
|
|
{
|
|
#ifdef USE_IN_LIBIO
|
|
__pthread_mutex_lock (stream->_lock);
|
|
#else
|
|
#endif
|
|
}
|
|
#ifdef USE_IN_LIBIO
|
|
#undef _IO_flockfile
|
|
strong_alias (__flockfile, _IO_flockfile)
|
|
#endif
|
|
weak_alias (__flockfile, flockfile);
|
|
|
|
|
|
void
|
|
__funlockfile (FILE *stream)
|
|
{
|
|
#ifdef USE_IN_LIBIO
|
|
__pthread_mutex_unlock (stream->_lock);
|
|
#else
|
|
#endif
|
|
}
|
|
#ifdef USE_IN_LIBIO
|
|
#undef _IO_funlockfile
|
|
strong_alias (__funlockfile, _IO_funlockfile)
|
|
#endif
|
|
weak_alias (__funlockfile, funlockfile);
|
|
|
|
|
|
int
|
|
__ftrylockfile (FILE *stream)
|
|
{
|
|
#ifdef USE_IN_LIBIO
|
|
return __pthread_mutex_trylock (stream->_lock);
|
|
#else
|
|
#endif
|
|
}
|
|
#ifdef USE_IN_LIBIO
|
|
strong_alias (__ftrylockfile, _IO_ftrylockfile)
|
|
#endif
|
|
weak_alias (__ftrylockfile, ftrylockfile);
|
|
|
|
void
|
|
__flockfilelist(void)
|
|
{
|
|
#ifdef USE_IN_LIBIO
|
|
_IO_list_lock();
|
|
#endif
|
|
}
|
|
|
|
void
|
|
__funlockfilelist(void)
|
|
{
|
|
#ifdef USE_IN_LIBIO
|
|
_IO_list_unlock();
|
|
#endif
|
|
}
|
|
|
|
void
|
|
__fresetlockfiles (void)
|
|
{
|
|
#ifdef USE_IN_LIBIO
|
|
_IO_ITER i;
|
|
|
|
pthread_mutexattr_t attr;
|
|
|
|
__pthread_mutexattr_init (&attr);
|
|
__pthread_mutexattr_settype (&attr, PTHREAD_MUTEX_RECURSIVE_NP);
|
|
|
|
for (i = _IO_iter_begin(); i != _IO_iter_end(); i = _IO_iter_next(i))
|
|
__pthread_mutex_init (_IO_iter_file(i)->_lock, &attr);
|
|
|
|
__pthread_mutexattr_destroy (&attr);
|
|
|
|
_IO_list_resetlock();
|
|
#endif
|
|
}
|