diff options
Diffstat (limited to 'nuttx/sched/pthread_condwait.c')
-rw-r--r-- | nuttx/sched/pthread_condwait.c | 137 |
1 files changed, 0 insertions, 137 deletions
diff --git a/nuttx/sched/pthread_condwait.c b/nuttx/sched/pthread_condwait.c deleted file mode 100644 index bf0164d2d..000000000 --- a/nuttx/sched/pthread_condwait.c +++ /dev/null @@ -1,137 +0,0 @@ -/**************************************************************************** - * sched/pthread_condwait.c - * - * Copyright (C) 2007-2009, 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 <unistd.h> -#include <pthread.h> -#include <sched.h> -#include <errno.h> -#include <debug.h> - -#include "pthread_internal.h" - -/**************************************************************************** - * Definitions - ****************************************************************************/ - -/**************************************************************************** - * Private Type Declarations - ****************************************************************************/ - -/**************************************************************************** - * Global Variables - ****************************************************************************/ - -/**************************************************************************** - * Private Variables - ****************************************************************************/ - -/**************************************************************************** - * Private Functions - ****************************************************************************/ - -/**************************************************************************** - * Public Functions - ****************************************************************************/ - -/**************************************************************************** - * Name: int pthread_cond_wait - * - * Description: - * A thread can wait for a condition variable to be signalled or broadcast. - * - * Parameters: - * None - * - * Return Value: - * None - * - * Assumptions: - * - ****************************************************************************/ - -int pthread_cond_wait(FAR pthread_cond_t *cond, FAR pthread_mutex_t *mutex) -{ - int ret; - - sdbg("cond=0x%p mutex=0x%p\n", cond, mutex); - - /* Make sure that non-NULL references were provided. */ - - if (!cond || !mutex) - { - ret = EINVAL; - } - - /* Make sure that the caller holds the mutex */ - - else if (mutex->pid != (int)getpid()) - { - ret = EPERM; - } - else - { - /* Give up the mutex */ - - sdbg("Give up mutex / take cond\n"); - - sched_lock(); - mutex->pid = 0; - ret = pthread_givesemaphore((sem_t*)&mutex->sem); - - /* Take the semaphore */ - - ret |= pthread_takesemaphore((sem_t*)&cond->sem); - sched_unlock(); - - /* Reacquire the mutex */ - - sdbg("Reacquire mutex...\n"); - ret |= pthread_takesemaphore((sem_t*)&mutex->sem); - if (!ret) - { - mutex->pid = getpid();; - } - } - - sdbg("Returning %d\n", ret); - return ret; -} - |