| /* |
| * Copyright (c) 2002, Intel Corporation. All rights reserved. |
| * Created by: bing.wei.liu REMOVE-THIS AT intel DOT com |
| * This file is licensed under the GPL license. For the full content |
| * of this license, see the COPYING file at the top level of this |
| * source tree. |
| |
| * Test pthread_mutexattr_settype() |
| * |
| * PTHREAD_MUTEX_ERRORCHECK |
| |
| * Provides errorchecking. A thread attempting to relock this mutex without unlocking it |
| * first will return with an error. A thread attempting to unlock a mutex which another |
| * thread has locked will return with an error. A thread attempting to unlock an unlocked |
| * mutex will return with an error. |
| * |
| * Steps: |
| * 1. Initialize a pthread_mutexattr_t object with pthread_mutexattr_init() |
| * 2 Set the 'type' of the mutexattr object to PTHREAD_MUTEX_ERRORCHECK. |
| * 3. Create a mutex with that mutexattr object. |
| * 4. Lock the mutex. |
| * 5. Create a thread, and in that thread, attempt to unlock the mutex. It should return an |
| * error. |
| * |
| */ |
| |
| #define _XOPEN_SOURCE 600 |
| |
| #include <pthread.h> |
| #include <stdio.h> |
| #include <errno.h> |
| #include "posixtest.h" |
| |
| pthread_t thread1; |
| pthread_mutex_t mutex; |
| pthread_mutexattr_t mta; |
| |
| int ret; /* Return value of the thread unlocking the mutex. */ |
| |
| void *a_thread_func() |
| { |
| /* Try to unlock the mutex that main already locked. */ |
| ret=pthread_mutex_unlock(&mutex); |
| pthread_exit((void*)0); |
| } |
| |
| int main() |
| { |
| |
| /* Initialize a mutex attributes object */ |
| if (pthread_mutexattr_init(&mta) != 0) |
| { |
| perror("Error at pthread_mutexattr_init()\n"); |
| return PTS_UNRESOLVED; |
| } |
| |
| /* Set the 'type' attribute to be PTHREAD_MUTEX_ERRORCHECK */ |
| if (pthread_mutexattr_settype(&mta, PTHREAD_MUTEX_ERRORCHECK) != 0) |
| { |
| printf("Test FAILED: Error setting the attribute 'type'\n"); |
| return PTS_FAIL; |
| } |
| |
| /* Initialize the mutex with that attribute obj. */ |
| if (pthread_mutex_init(&mutex, &mta) != 0) |
| { |
| perror("Error intializing the mutex.\n"); |
| return PTS_UNRESOLVED; |
| } |
| |
| /* Lock the mutex. */ |
| if (pthread_mutex_lock(&mutex) != 0) |
| { |
| perror("Error locking the mutex first time around.\n"); |
| return PTS_UNRESOLVED; |
| } |
| |
| /* Create the thread that will try to unlock the mutex we just locked. */ |
| if (pthread_create(&thread1, NULL, a_thread_func, NULL) != 0) |
| { |
| perror("Error creating a thread.\n"); |
| return PTS_UNRESOLVED; |
| } |
| |
| /* Wait for that thread to end execution */ |
| pthread_join(thread1, NULL); |
| |
| if (ret == 0) |
| { |
| printf("Test FAILED: Expected an error when trying to unlock a mutex that was locked by another thread. Returned 0 instead.\n"); |
| return PTS_FAIL; |
| } |
| |
| /* cleanup */ |
| pthread_mutex_unlock(&mutex); |
| pthread_mutex_destroy(&mutex); |
| |
| if (pthread_mutexattr_destroy(&mta)) |
| { |
| perror("Error at pthread_mutexattr_destory().\n"); |
| return PTS_UNRESOLVED; |
| } |
| |
| printf("Test PASSED\n"); |
| return PTS_PASS; |
| } |