dyld/unit-tests/test-cases/threaded-flat-lookup/main.c

   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 <dlfcn.h>
  27 #include <pthread.h>
  28
  29 #include "test.h" // PASS(), FAIL(), XPASS(), XFAIL()
  30
  31
  32 void* h1 = NULL;
  33 void* h2 = NULL;
  34
  35 static void* work(void* ignore)
  36 {
  37         for (int i=0; i < 10000; ++i) {
  38                 h1 = dlopen("libfoo1.dylib", 0);
  39                 if ( h1 == NULL ) {
  40                         FAIL("dlopen failed: %s", dlerror());
  41                         exit(0);
  42                 }
  43                 dlclose(h2);
  44                 h2 = dlopen("libfoo2.dylib", 0);
  45                 if ( h2 == NULL ) {
  46                         FAIL("dlopen failed: %s", dlerror());
  47                         exit(0);
  48                 }
  49                 dlclose(h1);
  50         }
  51
  52         //fprintf(stderr, "done with foos\n");
  53         return NULL;
  54 }
  55
  56
  57 int main()
  58 {
  59         h2 = dlopen("libfoo2.dylib", 0);
  60         if ( h2 == NULL ) {
  61                 FAIL("dlopen failed: %s", dlerror());
  62                 exit(0);
  63         }
  64
  65         // other thread dlopens and closes libfoo.dylib 500 times
  66         pthread_t other;
  67         if ( pthread_create(&other, NULL, work, NULL) != 0 ) {
  68                 FAIL("pthread_create failed");
  69                 exit(0);
  70         }
  71
  72         // this thread looks up a symbol 10,000 times
  73         for (int i=0; i < 15000; ++i) {
  74                 void* handle = dlopen("libclient.dylib", 0);
  75                 if ( handle == NULL ) {
  76                         FAIL("dlopen failed: %s", dlerror());
  77                         exit(0);
  78                 }
  79                 typedef void (*proc_t)();
  80                 proc_t proc = dlsym(handle, "doit");
  81                 if ( proc == NULL ) {
  82                         FAIL("dlsym failed: %s", dlerror());
  83                         exit(0);
  84                 }
  85                 (*proc)();
  86                 dlclose(handle);
  87         }
  88         //fprintf(stderr, "done with libclient\n");
  89
  90         void* result;
  91         pthread_join(other, &result);
  92
  93         PASS("threaded-flat-lookup");
  94         return 0;
  95 }