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1/*
2 * Copyright (C) 2010 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#ifndef ValueCheck_h
27#define ValueCheck_h
28
29// For malloc_size and _msize.
30#if OS(DARWIN)
31#include <malloc/malloc.h>
32#elif COMPILER(MSVC)
33#include <malloc.h>
34#endif
35
36namespace WTF {
37
38template<typename T> struct ValueCheck {
39 typedef T TraitType;
40 static void checkConsistency(const T&) { }
41};
42
43#if !ASSERT_DISABLED
44template<typename P> struct ValueCheck<P*> {
45 typedef P* TraitType;
46 static void checkConsistency(const P* p)
47 {
48 if (!p)
49 return;
50#if (defined(USE_SYSTEM_MALLOC) && USE_SYSTEM_MALLOC) || !defined(NDEBUG)
51#if OS(DARWIN)
52 ASSERT(malloc_size(p));
53#elif COMPILER(MSVC)
54 ASSERT(_msize(const_cast<P*>(p)));
55#endif
56#endif
57 ValueCheck<P>::checkConsistency(*p);
58 }
59};
60#endif
61
62}
63
64#endif // ValueCheck_h