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Diffstat (limited to 'apps/examples/ostest/rmutex.c')
| -rw-r--r-- | apps/examples/ostest/rmutex.c | 166 |
1 files changed, 0 insertions, 166 deletions
diff --git a/apps/examples/ostest/rmutex.c b/apps/examples/ostest/rmutex.c deleted file mode 100644 index ffd99c2df..000000000 --- a/apps/examples/ostest/rmutex.c +++ /dev/null @@ -1,166 +0,0 @@ -/*********************************************************************** - * rmutex.c - * - * Copyright (C) 2008 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. - * - ***********************************************************************/ - -#include <stdio.h> -#include <pthread.h> -#include "ostest.h" - -#ifndef NULL -# define NULL (void*)0 -#endif - -#define NTHREADS 3 -#define NLOOPS 3 -#define NRECURSIONS 3 - -static pthread_mutex_t mut; - -static void thread_inner(int id, int level) -{ - int status; - if (level < NRECURSIONS) - { - /* Take the mutex */ - - printf("thread_inner[%d, %d]: Locking\n", id, level); - status = pthread_mutex_lock(&mut); - if (status != 0) - { - printf("thread_inner[%d, %d]: ERROR pthread_mutex_lock failed: %d\n", - id, level, status); - } - printf("thread_inner[%d, %d]: Locked\n", id, level); - - /* Give the other threads a chance */ - - pthread_yield(); - thread_inner(id, level+1); - pthread_yield(); - - /* Unlock the mutex */ - - printf("thread_inner[%d, %d]: Unlocking\n", id, level); - status = pthread_mutex_unlock(&mut); - if (status != 0) - { - printf("thread_inner[%d, %d]: ERROR pthread_mutex_unlock failed: %d\n", - id, level, status); - } - printf("thread_inner[%d, %d]: Unlocked\n", id, level); - pthread_yield(); - } -} - -static void *thread_outer(void *parameter) -{ - int i; - printf("thread_outer[%d]: Started\n", (int)parameter); - for (i = 0; i < NLOOPS; i++) - { - printf("thread_outer[%d]: Loop %d\n", (int)parameter, i); - thread_inner((int)parameter, 0); - } - printf("thread_outer[%d]: Exitting\n", (int)parameter); - pthread_exit(NULL); - return NULL; /* Non-reachable -- needed for some compilers */ -} - -void recursive_mutex_test(void) -{ - pthread_t thread[NTHREADS]; -#ifdef SDCC - pthread_addr_t result[NTHREADS]; - pthread_attr_t attr; -#endif - pthread_mutexattr_t mattr; - int type; - int status; - int i; - - /* Initialize the mutex attributes */ - - pthread_mutexattr_init(&mattr); - status = pthread_mutexattr_settype(&mattr, PTHREAD_MUTEX_RECURSIVE); - if (status != 0) - { - printf("recursive_mutex_test: ERROR pthread_mutexattr_settype failed, status=%d\n", status); - } - - status = pthread_mutexattr_gettype(&mattr, &type); - if (status != 0) - { - printf("recursive_mutex_test: ERROR pthread_mutexattr_gettype failed, status=%d\n", status); - } - if (type != PTHREAD_MUTEX_RECURSIVE) - { - printf("recursive_mutex_test: ERROR pthread_mutexattr_gettype return type=%d\n", type); - } - - /* Initialize the mutex */ - - printf("recursive_mutex_test: Initializing mutex\n"); - pthread_mutex_init(&mut, &mattr); - - /* Start the threads -- all at the same, default priority */ - - for (i = 0; i < NTHREADS; i++) - { - printf("recursive_mutex_test: Starting thread %d\n", i+1); -#ifdef SDCC - (void)pthread_attr_init(&attr); - status = pthread_create(&thread[i], &attr, thread_outer, (pthread_addr_t)i+1); -#else - status = pthread_create(&thread[i], NULL, thread_outer, (pthread_addr_t)i+1); -#endif - if (status != 0) - { - printf("recursive_mutex_test: ERRROR thread#%d creation: %d\n", i+1, status); - } - } - - /* Wait for all; of the threads to complete */ - - for (i = 0; i < NTHREADS; i++) - { - printf("recursive_mutex_test: Waiting for thread %d\n", i+1); -#ifdef SDCC - pthread_join(thread[i], &result1); -#else - pthread_join(thread[i], NULL); -#endif - } - - printf("recursive_mutex_test: Complete\n"); -} |