1 /* 2 * Copyright (c) 2002, Intel Corporation. All rights reserved. 3 * This file is licensed under the GPL license. For the full content 4 * of this license, see the COPYING file at the top level of this 5 * source tree. 6 7 * Test pthread_spin_destroy(pthread_spinlock_t *lock) may fail if: 8 * 9 * [EBUSY] The implementation has detected an attempt to 10 * initialize or destroy a spin lock while it is in use 11 * (for example, while being used in a pthread_spin_lock() 12 * call) by another thread. 13 * 14 * Note: This test will always pass 15 * 16 * Steps: 17 * 1. Initialize a pthread_spinlock_t object 'spinlock' with 18 * pthread_spin_init() 19 * 2. Main thread lock 'spinlock', should get the lock 20 * 3. Create a child thread. The thread call pthread_spin_destroy() 21 */ 22 23 #define _XOPEN_SOURCE 600 24 #include <pthread.h> 25 #include <stdio.h> 26 #include <stdlib.h> 27 #include <unistd.h> 28 #include <signal.h> 29 #include <errno.h> 30 #include <string.h> 31 #include "posixtest.h" 32 33 static pthread_spinlock_t spinlock; 34 35 static void *fn_chld(void *arg) 36 { 37 int rc = 0; 38 39 printf("child: destroy spin lock\n"); 40 rc = pthread_spin_destroy(&spinlock); 41 if (rc == EBUSY) { 42 printf("child: correctly got EBUSY\n"); 43 printf("Test PASSED\n"); 44 } else { 45 printf("child: got return code %d, %s\n", rc, strerror(rc)); 46 printf 47 ("Test PASSED: *Note: Did not return EBUSY when destroying a spinlock already in use, but standard says 'may' fail\n"); 48 } 49 exit(PTS_PASS); 50 } 51 52 int main(void) 53 { 54 pthread_t child_thread; 55 56 if (pthread_spin_init(&spinlock, PTHREAD_PROCESS_PRIVATE) != 0) { 57 printf("main: Error at pthread_spin_init()\n"); 58 return PTS_UNRESOLVED; 59 } 60 61 printf("main: attempt spin lock\n"); 62 63 /* We should get the lock */ 64 if (pthread_spin_lock(&spinlock) != 0) { 65 printf("main cannot get spin lock when no one owns the lock\n"); 66 return PTS_UNRESOLVED; 67 } 68 printf("main: acquired spin lock\n"); 69 70 printf("main: create thread\n"); 71 if (pthread_create(&child_thread, NULL, fn_chld, NULL) != 0) { 72 printf("main: Error creating child thread\n"); 73 return PTS_UNRESOLVED; 74 } 75 76 /* Wait for thread to end execution */ 77 pthread_join(child_thread, NULL); 78 79 return PTS_PASS; 80 } 81
