wtf/FastMalloc.h

   1 // -*- mode: c++; c-basic-offset: 4 -*-
   2 /*
   3  *  This file is part of the KDE libraries
   4  *  Copyright (C) 2005 Apple Computer, Inc.
   5  *
   6  *  This library is free software; you can redistribute it and/or
   7  *  modify it under the terms of the GNU Library General Public
   8  *  License as published by the Free Software Foundation; either
   9  *  version 2 of the License, or (at your option) any later version.
  10  *
  11  *  This library is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  *  Library General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU Library General Public License
  17  *  along with this library; see the file COPYING.LIB.  If not, write to
  18  *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  19  *  Boston, MA 02110-1301, USA.
  20  *
  21  */
  22
  23 #ifndef WTF_FastMalloc_h
  24 #define WTF_FastMalloc_h
  25
  26 #include "Platform.h"
  27 #include <stdlib.h>
  28 #include <new>
  29
  30 namespace WTF {
  31
  32     void *fastMalloc(size_t n);
  33     void *fastZeroedMalloc(size_t n);
  34     void *fastCalloc(size_t n_elements, size_t element_size);
  35     void fastFree(void* p);
  36     void *fastRealloc(void* p, size_t n);
  37
  38 #ifndef NDEBUG
  39     void fastMallocForbid();
  40     void fastMallocAllow();
  41 #endif
  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
  74 extern "C" {
  75 void releaseFastMallocFreeMemory();
  76 }
  77 #endif
  78
  79 #endif // _CRTDBG_MAP_ALLOC
  80
  81 #endif /* WTF_FastMalloc_h */