wtf/FastMalloc.h

   1 /*
   2  *  Copyright (C) 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
   3  *
   4  *  This library is free software; you can redistribute it and/or
   5  *  modify it under the terms of the GNU Library General Public
   6  *  License as published by the Free Software Foundation; either
   7  *  version 2 of the License, or (at your option) any later version.
   8  *
   9  *  This library is distributed in the hope that it will be useful,
  10  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  *  Library General Public License for more details.
  13  *
  14  *  You should have received a copy of the GNU Library General Public License
  15  *  along with this library; see the file COPYING.LIB.  If not, write to
  16  *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  17  *  Boston, MA 02110-1301, USA.
  18  *
  19  */
  20
  21 #ifndef WTF_FastMalloc_h
  22 #define WTF_FastMalloc_h
  23
  24 #include "Platform.h"
  25 #include <stdlib.h>
  26 #include <new>
  27
  28 namespace WTF {
  29
  30     void *fastMalloc(size_t n);
  31     void *fastZeroedMalloc(size_t n);
  32     void *fastCalloc(size_t n_elements, size_t element_size);
  33     void fastFree(void* p);
  34     void *fastRealloc(void* p, size_t n);
  35
  36 #ifndef NDEBUG
  37     void fastMallocForbid();
  38     void fastMallocAllow();
  39 #endif
  40
  41     void releaseFastMallocFreeMemory();
  42
  43 } // namespace WTF
  44
  45 using WTF::fastMalloc;
  46 using WTF::fastZeroedMalloc;
  47 using WTF::fastCalloc;
  48 using WTF::fastRealloc;
  49 using WTF::fastFree;
  50
  51 #ifndef NDEBUG
  52 using WTF::fastMallocForbid;
  53 using WTF::fastMallocAllow;
  54 #endif
  55
  56 #if COMPILER(GCC) && PLATFORM(DARWIN)
  57 #define WTF_PRIVATE_INLINE __private_extern__ inline __attribute__((always_inline))
  58 #elif COMPILER(GCC)
  59 #define WTF_PRIVATE_INLINE inline __attribute__((always_inline))
  60 #elif COMPILER(MSVC)
  61 #define WTF_PRIVATE_INLINE __forceinline
  62 #else
  63 #define WTF_PRIVATE_INLINE inline
  64 #endif
  65
  66 #ifndef _CRTDBG_MAP_ALLOC
  67
  68 #if !defined(USE_SYSTEM_MALLOC) || !(USE_SYSTEM_MALLOC)
  69 WTF_PRIVATE_INLINE void* operator new(size_t s) { return fastMalloc(s); }
  70 WTF_PRIVATE_INLINE void operator delete(void* p) { fastFree(p); }
  71 WTF_PRIVATE_INLINE void* operator new[](size_t s) { return fastMalloc(s); }
  72 WTF_PRIVATE_INLINE void operator delete[](void* p) { fastFree(p); }
  73 #endif
  74
  75 #endif // _CRTDBG_MAP_ALLOC
  76
  77 #endif /* WTF_FastMalloc_h */