glibc/nptl/pthread_once.c
Ulrich Drepper eb0a3d0cab * sysdeps/pthread/pthread_barrier_wait.c: Move to...
* pthread_barrier_wait.c: ...here.
	* sysdeps/pthread/pthread_cond_broadcast.c: Move to...
	* pthread_cond_broadcast.c: ...here.
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	* pthread_cond_signal.c: ...here.
	* sysdeps/pthread/pthread_cond_timedwait.c: Move to...
	* pthread_cond_timedwait.c: ...here.
	* sysdeps/pthread/pthread_cond_wait.c: Move to...
	* pthread_cond_wait.c: ...here.
	* sysdeps/pthread/pthread_once.c: Move to...
	* pthread_once.c: ...here.
	* sysdeps/pthread/pthread_rwlock_rdlock.c: Move to...
	* pthread_rwlock_rdlock.c: ...here.
	* sysdeps/pthread/pthread_rwlock_timedrdlock.c: Move to...
	* pthread_rwlock_timedrdlock.c: ...here.
	* sysdeps/pthread/pthread_rwlock_timedwrlock.c: Move to...
	* pthread_rwlock_timedwrlock.c: ...here.
	* sysdeps/pthread/pthread_rwlock_unlock.c: Move to...
	* pthread_rwlock_unlock.c: ...here.
	* sysdeps/pthread/pthread_rwlock_wrlock.c: Move to...
	* pthread_rwlock_wrlock.c: ...here.
	* sysdeps/pthread/pthread_spin_destroy.c: Move to...
	* pthread_spin_destroy.c: ...here.
	* sysdeps/pthread/pthread_spin_init.c: Move to...
	* pthread_spin_init.c: ...here.
	* sysdeps/pthread/pthread_spin_unlock.c: Move to...
	* pthread_spin_unlock.c: ...here.
	* sysdeps/pthread/pthread_getcpuclockid.c: Move to...
	* pthread_getcpuclockid.c: ...here.
2006-10-28 05:15:26 +00:00

55 lines
1.6 KiB
C

/* Copyright (C) 2002 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 "pthreadP.h"
#include <lowlevellock.h>
static lll_lock_t once_lock = LLL_LOCK_INITIALIZER;
int
__pthread_once (once_control, init_routine)
pthread_once_t *once_control;
void (*init_routine) (void);
{
/* XXX Depending on whether the LOCK_IN_ONCE_T is defined use a
global lock variable or one which is part of the pthread_once_t
object. */
if (*once_control == PTHREAD_ONCE_INIT)
{
lll_lock (once_lock);
/* XXX This implementation is not complete. It doesn't take
cancelation and fork into account. */
if (*once_control == PTHREAD_ONCE_INIT)
{
init_routine ();
*once_control = !PTHREAD_ONCE_INIT;
}
lll_unlock (once_lock);
}
return 0;
}
strong_alias (__pthread_once, pthread_once)