| /* |
| * 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_NORMAL |
| |
| * This type of mutex doesn't detect deadlock. So a thread attempting to relock this mutex |
| * without unlocking it first will not return an error. Attempting to unlock a mutex locked |
| * by a different thread results in undefined behavior. Attemping to unlock an unlocked mutex |
| * results in undefined behavior. |
| * |
| * Steps: |
| * 1. Initialize a pthread_mutexattr_t object with pthread_mutexattr_init() |
| * 2 Set the 'type' of the mutexattr object to PTHREAD_MUTEX_NORMAL. |
| * 3. Create a mutex with that mutexattr object. |
| * 4. Lock the mutex, then relock it. Expect dead lock. Timer will be use |
| * to interrupt the deadlock. |
| */ |
| |
| #define _XOPEN_SOURCE 600 |
| |
| #include <pthread.h> |
| #include <stdio.h> |
| #include <errno.h> |
| #include <signal.h> |
| #include <unistd.h> |
| #include <stdlib.h> |
| #include "posixtest.h" |
| |
| void alarm_handler(int signo) |
| { |
| printf("Got SIGALRM after 1 second\n"); |
| printf("Test PASSED\n"); |
| exit(PTS_PASS); |
| } |
| |
| int main(void) |
| { |
| pthread_mutex_t mutex; |
| pthread_mutexattr_t mta; |
| int ret; |
| |
| /* 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_NORMAL */ |
| if (pthread_mutexattr_settype(&mta, PTHREAD_MUTEX_NORMAL) != 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; |
| } |
| |
| ret = pthread_mutex_lock(&mutex); |
| if (ret != 0) { |
| printf("Test Unresolved: Error at pthread_mutex_lock, " |
| "error code %d\n", ret); |
| return PTS_UNRESOLVED; |
| } |
| |
| signal(SIGALRM, alarm_handler); |
| alarm(1); |
| /* This lock will cause deadlock */ |
| ret = pthread_mutex_lock(&mutex); |
| /* We should not get here */ |
| printf("Relock the mutex did not get deadlock\n"); |
| printf("Test FAILED\n"); |
| return PTS_FAIL; |
| } |