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[thirdparty/glibc.git] / nptl / pthread_cond_init.c

/* Copyright (C) 2002-2014 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, see
   <http://www.gnu.org/licenses/>.  */

#include <shlib-compat.h>
#include "pthreadP.h"
#include <stap-probe.h>


int
__pthread_cond_init (cond, cond_attr)
     pthread_cond_t *cond;
     const pthread_condattr_t *cond_attr;
{
  struct pthread_condattr *icond_attr = (struct pthread_condattr *) cond_attr;

  cond->__data.__lock = LLL_LOCK_INITIALIZER;
  cond->__data.__futex = 0;
  cond->__data.__nwaiters = (icond_attr != NULL
			     ? ((icond_attr->value >> 1)
				& ((1 << COND_NWAITERS_SHIFT) - 1))
			     : CLOCK_REALTIME);
  cond->__data.__total_seq = 0;
  cond->__data.__wakeup_seq = 0;
  cond->__data.__woken_seq = 0;
  cond->__data.__mutex = (icond_attr == NULL || (icond_attr->value & 1) == 0
			  ? NULL : (void *) ~0l);
  cond->__data.__broadcast_seq = 0;

  LIBC_PROBE (cond_init, 2, cond, cond_attr);

  return 0;
}
versioned_symbol (libpthread, __pthread_cond_init,
		  pthread_cond_init, GLIBC_2_3_2);