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Diffstat (limited to 'nuttx/lib/semaphore/sem_init.c')
-rw-r--r-- | nuttx/lib/semaphore/sem_init.c | 125 |
1 files changed, 0 insertions, 125 deletions
diff --git a/nuttx/lib/semaphore/sem_init.c b/nuttx/lib/semaphore/sem_init.c deleted file mode 100644 index bc14415f9..000000000 --- a/nuttx/lib/semaphore/sem_init.c +++ /dev/null @@ -1,125 +0,0 @@ -/**************************************************************************** - * lib/sem/sem_init.c - * - * Copyright (C) 2007-2009, 2011-2012 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 <sys/types.h> -#include <limits.h> -#include <semaphore.h> -#include <errno.h> - -/**************************************************************************** - * Definitions - ****************************************************************************/ - -/**************************************************************************** - * Private Type Declarations - ****************************************************************************/ - -/**************************************************************************** - * Global Variables - ****************************************************************************/ - -/**************************************************************************** - * Private Variables - ****************************************************************************/ - -/**************************************************************************** - * Private Functions - ****************************************************************************/ - -/**************************************************************************** - * Public Functions - ****************************************************************************/ - -/**************************************************************************** - * Function: sem_init - * - * Description: - * This function initializes the UNAMED semaphore sem. Following a - * successful call to sem_init(), the semaophore may be used in subsequent - * calls to sem_wait(), sem_post(), and sem_trywait(). The semaphore - * remains usable until it is destroyed. - * - * Only sem itself may be used for performing synchronization. The result - * of referring to copies of sem in calls to sem_wait(), sem_trywait(), - * sem_post(), and sem_destroy() is undefined. - * - * Parameters: - * sem - Semaphore to be initialized - * pshared - Process sharing (not used) - * value - Semaphore initialization value - * - * Return Value: - * 0 (OK), or -1 (ERROR) if unsuccessful. - * - * Assumptions: - * - ****************************************************************************/ - -int sem_init(FAR sem_t *sem, int pshared, unsigned int value) -{ - /* Verify that a semaphore was provided and the count is within the valid - * range. - */ - - if (sem && value <= SEM_VALUE_MAX) - { - /* Initialize the seamphore count */ - - sem->semcount = (int16_t)value; - - /* Initialize to support priority inheritance */ - -#ifdef CONFIG_PRIORITY_INHERITANCE -# if CONFIG_SEM_PREALLOCHOLDERS > 0 - sem->hhead = NULL; -# else - sem->holder.htcb = NULL; - sem->holder.counts = 0; -# endif -#endif - return OK; - } - else - { - set_errno(EINVAL); - return ERROR; - } -} |