1 /* 2 * Copyright (c) 2002, Intel Corporation. All rights reserved. 3 * Created by: bing.wei.liu REMOVE-THIS AT intel DOT com 4 * This file is licensed under the GPL license. For the full content 5 * of this license, see the COPYING file at the top level of this 6 * source tree. 7 8 * Test pthread_mutexattr_settype() 9 * 10 PTHREAD_MUTEX_ERRORCHECK 11 12 Provides errorchecking. A thread attempting to relock this mutex without unlocking it 13 first will return with an error. A thread attempting to unlock a mutex which another 14 thread has locked will return with an error. A thread attempting to unlock an unlocked 15 mutex will return with an error. 16 * 17 * Steps: 18 * 1. Initialize a pthread_mutexattr_t object with pthread_mutexattr_init() 19 * 2 Set the 'type' of the mutexattr object to PTHREAD_MUTEX_ERRORCHECK. 20 * 3. Create a mutex with that mutexattr object. 21 * 4. Attempt to unlock it without locking it first. It should return an error. 22 * 23 */ 24 25 26 #include <pthread.h> 27 #include <stdio.h> 28 #include <errno.h> 29 #include "posixtest.h" 30 31 int main(void) 32 { 33 pthread_mutex_t mutex; 34 pthread_mutexattr_t mta; 35 36 /* Initialize a mutex attributes object */ 37 if (pthread_mutexattr_init(&mta) != 0) { 38 perror("Error at pthread_mutexattr_init()\n"); 39 return PTS_UNRESOLVED; 40 } 41 42 /* Set the 'type' attribute to be PTHREAD_MUTEX_ERRORCHECK */ 43 if (pthread_mutexattr_settype(&mta, PTHREAD_MUTEX_ERRORCHECK) != 0) { 44 printf("Test FAILED: Error setting the attribute 'type'\n"); 45 return PTS_FAIL; 46 } 47 48 /* Initialize the mutex with that attribute obj. */ 49 if (pthread_mutex_init(&mutex, &mta) != 0) { 50 perror("Error initializing the mutex.\n"); 51 return PTS_UNRESOLVED; 52 } 53 54 /* Unlock an already unlocked mutex. Here, an error should be returned. */ 55 if (pthread_mutex_unlock(&mutex) == 0) { 56 perror 57 ("Test FAILED: Did not return error when unlocking an already unlocked mutex.\n"); 58 return PTS_FAIL; 59 } 60 61 printf("Test PASSED\n"); 62 return PTS_PASS; 63 } 64
