1/* 2 * Copyright (c) 2010 Apple Inc. All rights reserved. 3 * 4 * @APPLE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. Please obtain a copy of the License at 10 * http://www.opensource.apple.com/apsl/ and read it before using this 11 * file. 12 * 13 * The Original Code and all software distributed under the License are 14 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 15 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 16 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 18 * Please see the License for the specific language governing rights and 19 * limitations under the License. 20 * 21 * @APPLE_LICENSE_HEADER_END@ 22 */ 23#include <stdio.h> // fprintf(), NULL 24#include <stdlib.h> // exit(), EXIT_SUCCESS 25#include <string.h> 26#include <unistd.h> 27#include <mach-o/dyld_priv.h> 28 29#include <dlfcn.h> 30#include <pthread.h> 31 32#include "test.h" // PASS(), FAIL(), XPASS(), XFAIL() 33 34 35static void* work(void* libName) 36{ 37 for (int i=0; i < 500; ++i) { 38 void* handle = dlopen((char*)libName, 0); 39 if ( handle == NULL ) { 40 FAIL("dlopen failed: %s", dlerror()); 41 exit(0); 42 } 43 dlclose(handle); 44 } 45 46 return NULL; 47} 48 49static const char* batchMappedHandler(enum dyld_image_states state, uint32_t infoCount, const struct dyld_image_info info[]) 50{ 51 usleep(10000); 52 return NULL; 53} 54 55 56int main() 57{ 58 // tell dyld we want to know when images are mapped 59 dyld_register_image_state_change_handler(dyld_image_state_initialized, false, batchMappedHandler); 60 61 // other thread dlopens and closes libfoo.dylib 500 times 62 pthread_t t1; 63 if ( pthread_create(&t1, NULL, work, "libfoo1.dylib") != 0 ) { 64 FAIL("pthread_create failed"); 65 exit(0); 66 } 67 68 pthread_t t2; 69 if ( pthread_create(&t2, NULL, work, "libfoo2.dylib") != 0 ) { 70 FAIL("pthread_create failed"); 71 exit(0); 72 } 73 74 pthread_t t3; 75 if ( pthread_create(&t3, NULL, work, "libfoo3.dylib") != 0 ) { 76 FAIL("pthread_create failed"); 77 exit(0); 78 } 79 80 pthread_t t4; 81 if ( pthread_create(&t4, NULL, work, "libfoo4.dylib") != 0 ) { 82 FAIL("pthread_create failed"); 83 exit(0); 84 } 85 86 void* result; 87 pthread_join(t1, &result); 88 pthread_join(t2, &result); 89 pthread_join(t3, &result); 90 pthread_join(t4, &result); 91 92 PASS("concurrent-dlopen-initializers"); 93 return 0; 94} 95