unit-tests/test-cases/dlerror/main.c

   1 /*
   2  * Copyright (c) 2005 Apple Computer, 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 <dlfcn.h>
  27 #include <pthread.h>
  28
  29 #include "test.h" // PASS(), FAIL(), XPASS(), XFAIL()
  30
  31
  32 ///
  33 /// This tests that the dlerror message is kept per thread
  34 ///
  35
  36 static void* work(void* arg)
  37 {
  38         const char* str = (char*)arg;
  39         for(int i=0; i < 1000; ++i) {
  40                 //fprintf(stderr, "dlopen(%s)\n", str);
  41                 void* handle = dlopen(str, RTLD_LAZY);
  42                 if ( handle != NULL ) {
  43                         FAIL("dlopen(%s) unexpectedly succeeded", str);
  44                         exit(0);
  45                 }
  46                 char* msg = dlerror();
  47                 //fprintf(stderr, "dlopen(%s) => %s\n", str, msg);
  48                 if ( (msg == NULL) || (strstr(msg, str) == NULL) ) {
  49                         FAIL("dlerror() did not contain library name that could not be loaded", str);
  50                         exit(0);
  51                 }
  52
  53
  54         }
  55         return 0;
  56 }
  57
  58
  59
  60 int main()
  61 {
  62         dlsym(RTLD_DEFAULT, "foobar");
  63         fprintf(stderr, "%s\n", dlerror());
  64
  65         pthread_t worker1;
  66         if ( pthread_create(&worker1, NULL, work, "/frazzle/bar") != 0 ) {
  67                 FAIL("pthread_create failed");
  68                 exit(0);
  69         }
  70
  71         pthread_t worker2;
  72         if ( pthread_create(&worker2, NULL, work, "/frazzle/foo") != 0 ) {
  73                 FAIL("pthread_create failed");
  74                 exit(0);
  75         }
  76
  77         pthread_t worker3;
  78         if ( pthread_create(&worker3, NULL, work, "/frazzle/dazzle") != 0 ) {
  79                 FAIL("pthread_create failed");
  80                 exit(0);
  81         }
  82
  83         void* result;
  84         fprintf(stderr, "waiting for worker 1\n");
  85         pthread_join(worker1, &result);
  86         fprintf(stderr, "waiting for worker 2\n");
  87         pthread_join(worker2, &result);
  88         fprintf(stderr, "waiting for worker 3\n");
  89         pthread_join(worker3, &result);
  90
  91         PASS("dlerror-thread-test");
  92         return 0;
  93 }