dyld/unit-tests/test-cases/bundle-reload/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>
  24 #include <stdlib.h>
  25 #include <mach-o/dyld.h>
  26 #include <Availability.h>
  27
  28 #include "test.h" // PASS(), FAIL()
  29
  30 ///
  31 /// The point of this test is to load and unload a bundle and
  32 /// verify that the address->image cache is properly invalidated.  rdar://problem/4212667
  33 ///
  34
  35 typedef void (*fooProc)();
  36
  37 // test.bundle
  38 void doit()
  39 {
  40 // NSCreateObjectFileImageFromMemory is only available on Mac OS X - not iPhone OS
  41 #if __MAC_OS_X_VERSION_MIN_REQUIRED
  42         NSObjectFileImage ofi;
  43         if ( NSCreateObjectFileImageFromFile("test.bundle", &ofi) != NSObjectFileImageSuccess ) {
  44                 FAIL("NSCreateObjectFileImageFromFile failed");
  45                 exit(0);
  46         }
  47
  48         NSModule mod = NSLinkModule(ofi,"test.bundle", NSLINKMODULE_OPTION_PRIVATE | NSLINKMODULE_OPTION_BINDNOW | NSLINKMODULE_OPTION_RETURN_ON_ERROR);
  49         if ( mod == NULL ) {
  50                 FAIL("NSLinkModule failed");
  51                 exit(0);
  52         }
  53
  54         NSSymbol sym = NSLookupSymbolInModule(mod, "_foo");
  55         if ( sym == NULL ) {
  56                 FAIL("NSLookupSymbolInModule failed");
  57                 exit(0);
  58         }
  59
  60         fooProc func = (fooProc)NSAddressOfSymbol(sym);
  61         (*func)();
  62
  63         if ( !NSUnLinkModule(mod, NSUNLINKMODULE_OPTION_NONE) ) {
  64                 FAIL("NSUnLinkModule failed");
  65                 exit(0);
  66         }
  67
  68         if ( !NSDestroyObjectFileImage(ofi) ) {
  69                 FAIL("NSDestroyObjectFileImage failed");
  70                 exit(0);
  71         }
  72 #endif
  73 }
  74
  75
  76 static void myRemoveImage(const struct mach_header *mh, intptr_t vmaddr_slide)
  77 {
  78 #if __MAC_OS_X_VERSION_MIN_REQUIRED
  79         // calling _dyld_get_image_header_containing_address() during the remove image hook
  80         // could cause dyld to not flush the address->image cache
  81         _dyld_get_image_header_containing_address(mh);
  82 #endif
  83 }
  84
  85
  86 int main()
  87 {
  88         _dyld_register_func_for_remove_image(&myRemoveImage);
  89
  90         doit();
  91         doit();
  92         doit();
  93
  94         PASS("bundle-reload");
  95         return 0;
  96 }
  97