mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-30 08:40:07 +00:00
59 lines
2.0 KiB
C
59 lines
2.0 KiB
C
/* Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
|
|
|
|
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. */
|
|
|
|
#include <assert.h>
|
|
#include <string.h>
|
|
#include "pthreadP.h"
|
|
|
|
|
|
static const struct pthread_mutexattr default_attr =
|
|
{
|
|
/* Default is a normal mutex, not shared between processes. */
|
|
.mutexkind = PTHREAD_MUTEX_NORMAL
|
|
};
|
|
|
|
|
|
int
|
|
__pthread_mutex_init (mutex, mutexattr)
|
|
pthread_mutex_t *mutex;
|
|
const pthread_mutexattr_t *mutexattr;
|
|
{
|
|
const struct pthread_mutexattr *imutexattr;
|
|
|
|
assert (sizeof (pthread_mutex_t) <= __SIZEOF_PTHREAD_MUTEX_T);
|
|
|
|
imutexattr = (const struct pthread_mutexattr *) mutexattr ?: &default_attr;
|
|
|
|
/* Clear the whole variable. */
|
|
memset (mutex, '\0', __SIZEOF_PTHREAD_MUTEX_T);
|
|
|
|
/* Copy the values from the attribute. */
|
|
mutex->__data.__kind = imutexattr->mutexkind & ~0x80000000;
|
|
|
|
/* Default values: mutex not used yet. */
|
|
// mutex->__count = 0; already done by memset
|
|
// mutex->__owner = 0; already done by memset
|
|
// mutex->__nusers = 0; already done by memset
|
|
// mutex->__spins = 0; already done by memset
|
|
|
|
return 0;
|
|
}
|
|
strong_alias (__pthread_mutex_init, pthread_mutex_init)
|
|
INTDEF(__pthread_mutex_init)
|