unit-tests/test-cases/image-state-change/main.c

   1 /*
   2  * Copyright (c) 2006 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 <stdbool.h>  // fprintf(), NULL
  24 #include <stdio.h>  // fprintf(), NULL
  25 #include <stdlib.h> // exit(), EXIT_SUCCESS
  26 #include <stdbool.h>
  27 #include <mach-o/dyld.h>
  28 #include <mach-o/dyld_priv.h>
  29 #include <dlfcn.h>
  30
  31 #include "test.h" // PASS(), FAIL(), XPASS(), XFAIL()
  32
  33
  34
  35 static int singleMappedCount = 0;
  36 static int batchMappedCount = 0;
  37 static int singleUnMappedCount = 0;
  38
  39
  40 static const char* batchMappedHandler(enum dyld_image_states state, uint32_t infoCount, const struct dyld_image_info info[])
  41 {
  42         for (uint32_t i=0; i < infoCount; ++i)
  43                 printf("batchMappedHandler(): %u/%u -> %s\n", i, infoCount, info[i].imageFilePath);
  44         if ( state != dyld_image_state_dependents_mapped ) {
  45                 FAIL("image-state-change: batchMappedHandler passed state %d", state);
  46                 exit(0);
  47         }
  48         batchMappedCount += infoCount;
  49         return NULL;
  50 }
  51
  52 static const char* singleMappedHandler(enum dyld_image_states state, uint32_t infoCount, const struct dyld_image_info info[])
  53 {
  54         printf("singleMappedHandler(%s)\n", info[0].imageFilePath);
  55         if ( state != dyld_image_state_mapped ) {
  56                 FAIL("image-state-change: singleMappedHandler passed state %d", state);
  57                 exit(0);
  58         }
  59         if ( infoCount != 1 ) {
  60                 FAIL("image-state-change: singleMappedHandler given %d images", infoCount);
  61                 exit(0);
  62         }
  63         ++singleMappedCount;
  64         return NULL;
  65 }
  66
  67 static const char* singleUnmappedHandler(enum dyld_image_states state, uint32_t infoCount, const struct dyld_image_info info[])
  68 {
  69         printf("singleUnmappedHandler(%s)\n", info[0].imageFilePath);
  70         if ( state != dyld_image_state_terminated ) {
  71                 FAIL("image-state-change: singleUnmappedHandler passed state %d", state);
  72                 exit(0);
  73         }
  74         if ( infoCount != 1 ) {
  75                 FAIL("image-state-change: singleUnmappedHandler given %d images", infoCount);
  76                 exit(0);
  77         }
  78         ++singleUnMappedCount;
  79         return NULL;
  80 }
  81
  82 static void loadAndUnLoad()
  83 {
  84         void* handle = dlopen("foo.bundle", RTLD_LAZY);
  85         if ( handle == NULL ) {
  86                 FAIL("image-state-change: dlopen(foo.bundle) failed: %s", dlerror());
  87                 exit(0);
  88         }
  89
  90         int result = dlclose(handle);
  91         if ( result != 0 ) {
  92                 FAIL("image-state-change: dlclose(handle) returned %d, %s", result, dlerror());
  93                 exit(0);
  94         }
  95 }
  96
  97
  98 int main(int argc, const char* argv[])
  99 {
 100         // tell dyld we want to know when images are mapped
 101         dyld_register_image_state_change_handler(dyld_image_state_dependents_mapped, true, batchMappedHandler);
 102         dyld_register_image_state_change_handler(dyld_image_state_mapped, false, singleMappedHandler);
 103         dyld_register_image_state_change_handler(dyld_image_state_terminated, false, singleUnmappedHandler);
 104         // with batch mode we get notified of existing images, but not with single mode, so re-sync counts
 105         batchMappedCount=0;
 106
 107         loadAndUnLoad();
 108
 109         loadAndUnLoad();
 110
 111         if ( (singleMappedCount == batchMappedCount) && (singleMappedCount == singleUnMappedCount) )
 112                 PASS("image-state-change");
 113         else
 114                 FAIL("image-state-change: batch count=%d, single count=%d", batchMappedCount, singleMappedCount);
 115
 116         return EXIT_SUCCESS;
 117 }