1/*
2 * Copyright (c) 2000-2004 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
24
25//
26// trackingallocator - Allocator that keeps track of allocations
27//
28#ifndef _H_TRACKINGALLOCATOR
29#define _H_TRACKINGALLOCATOR
30
31#include <security_utilities/alloc.h>
32#include <set>
33
34namespace Security
35{
36
37//
38// A Allocator that keeps track of allocations and can throw everything
39// away unless explicitly committed.
40//
41class TrackingAllocator : public Allocator
42{
43public:
44	TrackingAllocator(Allocator &inAllocator) : subAllocator(inAllocator) {}
45	virtual ~TrackingAllocator();
46
47	Allocator &subAllocator;
48
49	// standard Allocator operations
50	void *malloc(size_t inSize) throw(std::bad_alloc);
51	void free(void *inAddress) throw();
52	void *realloc(void *inAddress, size_t inNewSize) throw(std::bad_alloc);
53
54	// reset frees all memory; commit forgets about it all
55	void reset();
56	void commit();
57
58private:
59	typedef std::set<void *> AllocSet;
60	AllocSet mAllocSet;
61};
62
63} // end namespace Security
64
65#endif //_H_TRACKINGALLOCATOR
66