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