unit-tests/test-cases/dlopen-dyld-locking/main.c

   1 /*
   2  * Copyright (c) 2007 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 <dlfcn.h>
  26 #include <pthread.h>
  27
  28 #include "test.h" // PASS(), FAIL(), XPASS(), XFAIL()
  29
  30 #include "base.h"
  31
  32
  33 ///
  34 /// This test verifies that dlopen() releases the dyld lock
  35 /// while initializers are run.
  36 ///
  37 ///
  38
  39
  40 static void* work(void* arg)
  41 {
  42         waitForState(1);
  43         dlopen("libbar.dylib", RTLD_LAZY);              // dladdr() will hang until dyld lock is released
  44         setState(2);                            // the initializer in libfoo.dylib is block waiting for state 2
  45         return NULL;
  46 }
  47
  48
  49 int main()
  50 {
  51         pthread_t otherThread;
  52         if ( pthread_create(&otherThread, NULL, work, NULL) != 0 ) {
  53                 FAIL("dlopen-dyld-locking: pthread_create failed");
  54                 exit(0);
  55         }
  56
  57
  58         void* handle = dlopen("libfoo.dylib", RTLD_LAZY);
  59         if ( handle == NULL ) {
  60                 FAIL("dlopen-dyld-locking: dlopen(\"libfoo.dylib\") failed: %s", dlerror());
  61                 exit(0);
  62         }
  63
  64         PASS("dlopen-dyld-locking");
  65         return EXIT_SUCCESS;
  66 }
  67
  68