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 33static pthread_spinlock_t spinlock; 34 35static 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 { 43 printf("child: correctly got EBUSY\n"); 44 printf("Test PASSED\n"); 45 } 46 else 47 { 48 printf("child: got return code %d, %s\n", rc, strerror(rc)); 49 printf("Test PASSED: *Note: Did not return EBUSY when destroying a spinlock already in use, but standard says 'may' fail\n"); 50 } 51 exit(PTS_PASS); 52} 53 54int main() 55{ 56 pthread_t child_thread; 57 58 if(pthread_spin_init(&spinlock, PTHREAD_PROCESS_PRIVATE) != 0) 59 { 60 printf("main: Error at pthread_spin_init()\n"); 61 return PTS_UNRESOLVED; 62 } 63 64 printf("main: attempt spin lock\n"); 65 66 /* We should get the lock */ 67 if(pthread_spin_lock(&spinlock) != 0) 68 { 69 printf("main cannot get spin lock when no one owns the lock\n"); 70 return PTS_UNRESOLVED; 71 } 72 printf("main: acquired spin lock\n"); 73 74 printf("main: create thread\n"); 75 if(pthread_create(&child_thread, NULL, fn_chld, NULL) != 0) 76 { 77 printf("main: Error creating child thread\n"); 78 return PTS_UNRESOLVED; 79 } 80 81 /* Wait for thread to end execution */ 82 pthread_join(child_thread, NULL); 83 84 return PTS_PASS; 85} 86