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Diffstat (limited to 'nuttx/sched/pthread/pthread_barrierdestroy.c')
-rw-r--r-- | nuttx/sched/pthread/pthread_barrierdestroy.c | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/nuttx/sched/pthread/pthread_barrierdestroy.c b/nuttx/sched/pthread/pthread_barrierdestroy.c new file mode 100644 index 000000000..40e8e875c --- /dev/null +++ b/nuttx/sched/pthread/pthread_barrierdestroy.c @@ -0,0 +1,110 @@ +/******************************************************************************** + * sched/pthread_barriedestroy.c + * + * Copyright (C) 2007, 2009 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <gnutt@nuttx.org> + * + * 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. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * 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. + * + ********************************************************************************/ + +/******************************************************************************** + * Included Files + ********************************************************************************/ + +#include <nuttx/config.h> + +#include <pthread.h> +#include <semaphore.h> +#include <errno.h> +#include <debug.h> + +/******************************************************************************** + * Definitions + ********************************************************************************/ + +/******************************************************************************** + * Private Type Declarations + ********************************************************************************/ + +/******************************************************************************** + * Global Variables + ********************************************************************************/ + +/******************************************************************************** + * Private Variables + ********************************************************************************/ + +/******************************************************************************** + * Private Function Prototypes + ********************************************************************************/ + +/******************************************************************************** + * Public Functions + ********************************************************************************/ + +/******************************************************************************** + * Name: pthread_barrier_destroy + * + * Description: + * The pthread_barrier_destroy() function destroys the barrier referenced by + * 'barrier' and releases any resources used by the barrier. The effect of + * subsequent use of the barrier is undefined until the barrier is + * reinitialized by another call to pthread_barrier_init(). The results are + * undefined if pthread_barrier_destroy() is called when any thread is blocked + * on the barrier, or if this function is called with an uninitialized barrier. + * + * Parameters: + * barrier - barrier to be destroyed. + * + * Return Value: + * 0 (OK) on success or on of the following error numbers: + * + * EBUSY The implementation has detected an attempt to destroy a barrier while + * it is in use. + * EINVAL The value specified by barrier is invalid. + * + * Assumptions: + * + ********************************************************************************/ + +int pthread_barrier_destroy(FAR pthread_barrier_t *barrier) +{ + int ret = OK; + + if (!barrier) + { + ret = EINVAL; + } + else + { + sem_destroy(&barrier->sem); + barrier->count = 0; + } + return ret; +} |