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 36 namespace WTF { 37 38 template<typename T> struct ValueCheck { 39 typedef T TraitType; checkConsistencyValueCheck40 static void checkConsistency(const T&) { } 41 }; 42 43 #if !ASSERT_DISABLED 44 template<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 65