110 lines
4.4 KiB
C
110 lines
4.4 KiB
C
/********************************************************************************
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* pthread_barriedestroy.c
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*
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* Copyright (C) 2007 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
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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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*
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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
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name Gregory Nutt nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* 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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********************************************************************************/
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/********************************************************************************
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* Included Files
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********************************************************************************/
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#include <sys/types.h>
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#include <pthread.h>
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#include <semaphore.h>
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#include <errno.h>
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#include <debug.h>
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/********************************************************************************
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* Definitions
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********************************************************************************/
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/********************************************************************************
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* Private Type Declarations
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********************************************************************************/
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/********************************************************************************
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* Global Variables
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********************************************************************************/
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/********************************************************************************
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* Private Variables
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********************************************************************************/
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/********************************************************************************
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* Private Function Prototypes
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********************************************************************************/
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/********************************************************************************
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* Public Functions
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********************************************************************************/
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/********************************************************************************
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* Function: pthread_barrier_destroy
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*
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* Description:
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* The pthread_barrier_destroy() function destroys the barrier referenced by
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* 'barrier' and releases any resources used by the barrier. The effect of
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* subsequent use of the barrier is undefined until the barrier is
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* reinitialized by another call to pthread_barrier_init(). The results are
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* undefined if pthread_barrier_destroy() is called when any thread is blocked
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* on the barrier, or if this function is called with an uninitialized barrier.
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*
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* Parameters:
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* barrier - barrier to be destroyed.
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*
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* Return Value:
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* 0 (OK) on success or on of the following error numbers:
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*
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* EBUSY The implementation has detected an attempt to destroy a barrier while
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* it is in use.
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* EINVAL The value specified by barrier is invalid.
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*
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* Assumptions:
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*
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********************************************************************************/
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int pthread_barrier_destroy(FAR pthread_barrier_t *barrier)
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{
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int ret = OK;
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if (!barrier)
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{
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ret = EINVAL;
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}
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else
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{
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sem_destroy(&barrier->sem);
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barrier->count = 0;
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}
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return ret;
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}
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