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 that pthread_mutex_trylock() 9 * Upon failure, it shall return: 10 * -[EBUSY] The mutex could not be acquired because it was already locked. 11 12 * Steps: 13 * -- Initilize a mutex object 14 * -- Lock the mutex using pthread_mutex_lock() 15 * -- Try to lock the mutex using pthread_mutex_trylock() and expect EBUSY 16 * 17 */ 18 19 #include <pthread.h> 20 #include <stdio.h> 21 #include <errno.h> 22 #include "posixtest.h" 23 24 pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER; 25 26 int main(void) 27 { 28 int rc; 29 30 if ((rc = pthread_mutex_lock(&mutex)) != 0) { 31 fprintf(stderr, "Error at pthread_mutex_lock(), rc=%d\n", rc); 32 return PTS_UNRESOLVED; 33 } 34 35 rc = pthread_mutex_trylock(&mutex); 36 if (rc != EBUSY) { 37 fprintf(stderr, "Expected %d(EBUSY), got %d\n", EBUSY, rc); 38 printf("Test FAILED\n"); 39 return PTS_FAIL; 40 } 41 42 pthread_mutex_unlock(&mutex); 43 pthread_mutex_destroy(&mutex); 44 45 printf("Test PASSED\n"); 46 return PTS_PASS; 47 } 48
