src/dyldNew.cpp

   1 /* -*- mode: C++; c-basic-offset: 4; tab-width: 4 -*-
   2  *
   3  * Copyright (c) 2004-2005 Apple Computer, Inc. All rights reserved.
   4  *
   5  * @APPLE_LICENSE_HEADER_START@
   6  *
   7  * This file contains Original Code and/or Modifications of Original Code
   8  * as defined in and that are subject to the Apple Public Source License
   9  * Version 2.0 (the 'License'). You may not use this file except in
  10  * compliance with the License. Please obtain a copy of the License at
  11  * http://www.opensource.apple.com/apsl/ and read it before using this
  12  * file.
  13  *
  14  * The Original Code and all software distributed under the License are
  15  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  16  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  17  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  19  * Please see the License for the specific language governing rights and
  20  * limitations under the License.
  21  *
  22  * @APPLE_LICENSE_HEADER_END@
  23  */
  24
  25 #include <new>
  26 #include <malloc/malloc.h>
  27 //#include <stdio.h>
  28
  29
  30 //
  31 // dyld does not use malloc anywhere, instead C++ new is used.
  32 // All dyld allocations go in dyld-only zone so as to be not co-mingled with target proccess's allocations
  33 //
  34 //
  35 //
  36
  37 static malloc_zone_t* sZone = NULL;  // could be initialized to malloc_create_zone, but that would require careful ordering of initializers
  38
  39
  40 void* operator new(std::size_t len) throw (std::bad_alloc)
  41 {
  42         if ( sZone == NULL ) {
  43                 sZone = malloc_create_zone(40960, 0);
  44                 malloc_set_zone_name(sZone, "dyld heap");
  45         }
  46         //fprintf(stderr, "new(%d)\n", len);
  47         return malloc_zone_malloc(sZone, len);
  48 }
  49
  50 void* operator new[](std::size_t len) throw (std::bad_alloc)
  51 {
  52         if ( sZone == NULL ) {
  53                 sZone = malloc_create_zone(40960, 0);
  54                 malloc_set_zone_name(sZone, "dyld heap");
  55         }
  56         //fprintf(stderr, "new[](%d)\n", len);
  57         return malloc_zone_malloc(sZone, len);
  58 }
  59
  60
  61 void operator delete(void* obj) throw()
  62 {
  63         //fprintf(stderr, "delete(%p)\n", obj);
  64         malloc_zone_free(sZone, obj);
  65 }
  66
  67
  68 void operator delete[](void* obj) throw()
  69 {
  70         //fprintf(stderr, "delete[](%p)\n", obj);
  71         malloc_zone_free(sZone, obj);
  72 }
  73
  74