/* SPDX-License-Identifier: BSD-2-Clause */

/**
 * @file
 *
 * @ingroup POSIXAPI
 *
 * @brief Waiting on a Condition
 */

/*
 *  COPYRIGHT (c) 1989-2007.
 *  On-Line Applications Research Corporation (OAR).
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <rtems/posix/condimpl.h>

#include <string.h>

bool _POSIX_Condition_variables_Auto_initialization(
  POSIX_Condition_variables_Control *the_cond
)
{
  POSIX_Condition_variables_Control zero;
  unsigned long                     flags;

  memset( &zero, 0, sizeof( zero ) );

  if ( memcmp( the_cond, &zero, sizeof( *the_cond ) ) != 0 ) {
    return false;
  }

  flags = (uintptr_t) the_cond ^ POSIX_CONDITION_VARIABLES_MAGIC;
  flags &= ~POSIX_CONDITION_VARIABLES_FLAGS_MASK;
  the_cond->flags = flags;
  return true;
}

/*
 *  11.4.4 Waiting on a Condition, P1003.1c/Draft 10, p. 105
 */

int pthread_cond_wait(
  pthread_cond_t     *cond,
  pthread_mutex_t    *mutex
)
{
  return _POSIX_Condition_variables_Wait_support(
    cond,
    mutex,
    NULL
  );
}