1 /* 2 * Copyright (c) 2002, Intel Corporation. All rights reserved. 3 * Created by: rolla.n.selbak 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_cancelstate 9 * It will have no affect on the calling thread if cancelability is disabled. 10 * 11 * STEPS: 12 * 1. Create a thread. 13 * 2. In the thread function, set the state to 14 * PTHREAD_CANCEL_DISABLE and the cancel_flag to -1. 15 * 3. Send out a thread cancel request to the new thread 16 * 4. If the cancel request was honored, the cancel_flag will remain -1. 17 * 5. If not, the thread will continue until the end of execution, cancel_flag will be set to 1 18 * and,therefore passing the test. 19 */ 20 21 #include <pthread.h> 22 #include <stdio.h> 23 #include <errno.h> 24 #include <unistd.h> 25 #include "posixtest.h" 26 27 #define INTHREAD 0 /* Control going to or is already for Thread */ 28 #define INMAIN 1 /* Control going to or is already for Main */ 29 30 int sem1; /* Manual semaphore */ 31 int cancel_flag; 32 33 /* Function that the thread executes upon its creation */ 34 void *a_thread_func() 35 { 36 /* Set cancel state to DISABLE, meaning it shouldn't honor any cancel requests. */ 37 pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL); 38 39 cancel_flag = -1; 40 41 /* Indicate to main() that the thread has been created. */ 42 sem1 = INMAIN; 43 44 /* Wait until main() has sent out a cancel request, meaning until it 45 * sets sem1==INTHREAD. */ 46 while (sem1 == INMAIN) 47 sleep(1); 48 49 /* If the thread incorrectly honors the cancel request, then the cancel_flag will 50 * remain -1. If it contiues on with the thread execution, then the cancel_flag 51 * will be 1, and therefore passing this test. */ 52 pthread_testcancel(); 53 54 /* Should reach here if the thread correctly ignores the cancel 55 * request. */ 56 cancel_flag = 1; 57 pthread_exit(0); 58 return NULL; 59 } 60 61 int main(void) 62 { 63 pthread_t new_th; 64 65 /* Initializing values */ 66 sem1 = INTHREAD; 67 cancel_flag = 0; 68 69 /* Create a new thread. */ 70 if (pthread_create(&new_th, NULL, a_thread_func, NULL) != 0) { 71 perror("Error creating thread\n"); 72 return PTS_UNRESOLVED; 73 } 74 75 /* Make sure thread is created before we cancel it. (wait for 76 * a_thread_func() to set sem1=INMAIN.) */ 77 while (sem1 == INTHREAD) 78 sleep(1); 79 80 if (pthread_cancel(new_th) != 0) { 81 perror("Error sending cancel request\n"); 82 return PTS_UNRESOLVED; 83 } 84 85 /* Indicate to the thread function that the thread cancel request 86 * has been sent to it. */ 87 sem1 = INTHREAD; 88 89 /* Wait for thread to end execution. */ 90 if (pthread_join(new_th, NULL) != 0) { 91 perror("Error in pthread_join()\n"); 92 return PTS_UNRESOLVED; 93 } 94 95 /* This means that the cancel request was honored rather than ignored, and 96 * the test fails. */ 97 if (cancel_flag <= 0) { 98 printf 99 ("Test FAILED: pthread_testcancel() was honored even though cancelability was disabled.\n"); 100 return PTS_FAIL; 101 } 102 103 printf("Test PASSED\n"); 104 return PTS_PASS; 105 } 106
