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Diffstat (limited to 'nuttx/examples/ostest/mutex.c')
-rw-r--r-- | nuttx/examples/ostest/mutex.c | 142 |
1 files changed, 0 insertions, 142 deletions
diff --git a/nuttx/examples/ostest/mutex.c b/nuttx/examples/ostest/mutex.c deleted file mode 100644 index 752f833f2..000000000 --- a/nuttx/examples/ostest/mutex.c +++ /dev/null @@ -1,142 +0,0 @@ -/*********************************************************************** - * mutex.c - * - * Copyright (C) 2007, 2008 Gregory Nutt. All rights reserved. - * Author: Gregory Nutt <spudmonkey@racsa.co.cr> - * - * 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 NLOOPS 32 - -static pthread_mutex_t mut; -static volatile int my_mutex = 0; -static unsigned long nloops[2] = {0, 0}; -static unsigned long nerrors[2] = {0, 0}; - -static void *thread_func(void *parameter) -{ - int id = (int)parameter; - int ndx = id - 1; - int i; - - for (nloops[ndx] = 0; nloops[ndx] < NLOOPS; nloops[ndx]++) - { - int status = pthread_mutex_lock(&mut); - if (status != 0) - { - printf("ERROR thread %d: pthread_mutex_lock failed, status=%d\n", - id, status); - } - - if (my_mutex == 1) - { - printf("ERROR thread=%d: " - "my_mutex should be zero, instead my_mutex=%d\n", - id, my_mutex); - nerrors[ndx]++; - } - - my_mutex = 1; - for (i = 0; i < 10; i++) - { - pthread_yield(); - } - my_mutex = 0; - - status = pthread_mutex_unlock(&mut); - if (status != 0) - { - printf("ERROR thread %d: pthread_mutex_unlock failed, status=%d\n", - id, status); - } - } - pthread_exit(NULL); - return NULL; /* Non-reachable -- needed for some compilers */ -} - -void mutex_test(void) -{ - pthread_t thread1, thread2; -#ifdef SDCC - pthread_addr_t result1, result2; - pthread_attr_t attr; -#endif - int status; - - /* Initialize the mutex */ - - printf("Initializing mutex\n"); - pthread_mutex_init(&mut, NULL); - - /* Start two thread instances */ - - printf("Starting thread 1\n"); -#ifdef SDCC - (void)pthread_attr_init(&attr); - status = pthread_create(&thread1, &attr, thread_func, (pthread_addr_t)1); -#else - status = pthread_create(&thread1, NULL, thread_func, (pthread_addr_t)1); -#endif - if (status != 0) - { - printf("Error in thread#1 creation\n"); - } - - printf("Starting thread 2\n"); -#ifdef SDCC - status = pthread_create(&thread2, &attr, thread_func, (pthread_addr_t)2); -#else - status = pthread_create(&thread2, NULL, thread_func, (pthread_addr_t)2); -#endif - if (status != 0) - { - printf("Error in thread#2 creation\n"); - } - -#ifdef SDCC - pthread_join(thread1, &result1); - pthread_join(thread2, &result2); -#else - pthread_join(thread1, NULL); - pthread_join(thread2, NULL); -#endif - - printf("\t\tThread1\tThread2\n"); - printf("\tLoops\t%ld\t%ld\n", nloops[0], nloops[1]); - printf("\tErrors\t%ld\t%ld\n", nerrors[0], nerrors[1]); -} |