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/* 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>
#include "internals.h"
#ifdef USE_IN_LIBIO
#include "../libio/libioP.h"
#endif
#ifndef SHARED
/* We need a hook to force this file to be linked in when static
libpthread is used. */
const int __pthread_provide_lockfile = 0;
#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
}
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