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98 lines
2.9 KiB
C
98 lines
2.9 KiB
C
/* SPDX-License-Identifier: BSD-2-Clause */
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/**
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* @file
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*
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* @brief Initialize a Condition Variable
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* @ingroup POSIXAPI
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*/
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/*
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* COPYRIGHT (c) 1989-2007.
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* On-Line Applications Research Corporation (OAR).
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <rtems/posix/condimpl.h>
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#include <rtems/posix/posixapi.h>
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RTEMS_STATIC_ASSERT(
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offsetof( POSIX_Condition_variables_Control, flags )
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== offsetof( pthread_cond_t, _flags ),
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POSIX_CONDITION_VARIABLES_CONTROL_FLAGS
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);
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RTEMS_STATIC_ASSERT(
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offsetof( POSIX_Condition_variables_Control, mutex )
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== offsetof( pthread_cond_t, _mutex ),
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POSIX_CONDITION_VARIABLES_CONTROL_COUNT
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);
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RTEMS_STATIC_ASSERT(
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offsetof( POSIX_Condition_variables_Control, Queue )
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== offsetof( pthread_cond_t, _Queue ),
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POSIX_CONDITION_VARIABLES_CONTROL_QUEUE
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);
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RTEMS_STATIC_ASSERT(
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sizeof( POSIX_Condition_variables_Control ) == sizeof( pthread_cond_t ),
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POSIX_CONDITION_VARIABLES_CONTROL_SIZE
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);
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/**
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* 11.4.2 Initializing and Destroying a Condition Variable,
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* P1003.1c/Draft 10, p. 87
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*/
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int pthread_cond_init(
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pthread_cond_t *cond,
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const pthread_condattr_t *attr
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)
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{
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POSIX_Condition_variables_Control *the_cond;
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the_cond = _POSIX_Condition_variables_Get( cond );
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if ( the_cond == NULL ) {
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return EINVAL;
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}
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if ( attr == NULL ) {
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attr = &_POSIX_Condition_variables_Default_attributes;
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}
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if ( !attr->is_initialized ) {
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return EINVAL;
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}
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if ( !_POSIX_Is_valid_pshared( attr->process_shared ) ) {
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return EINVAL;
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}
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_POSIX_Condition_variables_Initialize( the_cond, attr );
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return 0;
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}
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