1  /*
 2   * Copyright (c) 2000-2004,2011,2014 Apple 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
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15   * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
16   * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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18   * Please see the License for the specific language governing rights and
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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  
34  namespace Security
35  {
36  
37  //
38  // A Allocator that keeps track of allocations and can throw everything
39  // away unless explicitly committed.
40  //
41  class TrackingAllocator : public Allocator
42  {
43  public:
44  	TrackingAllocator(Allocator &inAllocator) : subAllocator(inAllocator) {}
45  	virtual ~TrackingAllocator();
46  	
47  	Allocator &subAllocator;
48  
49  	// standard Allocator operations
50  	void *malloc(size_t inSize);
51  	void free(void *inAddress) _NOEXCEPT;
52  	void *realloc(void *inAddress, size_t inNewSize);
53  
54  	// reset frees all memory; commit forgets about it all
55  	void reset();
56  	void commit();
57  	
58  private:
59  	typedef std::set<void *> AllocSet;
60  	AllocSet mAllocSet;
61  };
62  
63  } // end namespace Security
64  
65  #endif //_H_TRACKINGALLOCATOR