flutter_flutter/sky/engine/wtf/FastAllocBase.h

/*
 * Copyright (C) 2008, 2009 Paul Pedriana <ppedriana@ea.com>.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1.  Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 * 2.  Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
 *     its contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef SKY_ENGINE_WTF_FASTALLOCBASE_H_
#define SKY_ENGINE_WTF_FASTALLOCBASE_H_

// Provides customizable overrides of fastMalloc/fastFree and operator
// new/delete
//
// Provided functionality:
//    Macro: WTF_MAKE_FAST_ALLOCATED
//
// Example usage:
//    class Widget {
//        WTF_MAKE_FAST_ALLOCATED
//    ...
//    };
//
//    struct Data {
//        WTF_MAKE_FAST_ALLOCATED
//    public:
//    ...
//    };
//

#include "flutter/sky/engine/wtf/Assertions.h"
#include "flutter/sky/engine/wtf/FastMalloc.h"
#include "flutter/sky/engine/wtf/StdLibExtras.h"

#define WTF_MAKE_FAST_ALLOCATED                                         \
 public:                                                                \
  void* operator new(size_t, void* p) { return p; }                     \
  void* operator new[](size_t, void* p) { return p; }                   \
                                                                        \
  void* operator new(size_t size) { return ::WTF::fastMalloc(size); }   \
                                                                        \
  void operator delete(void* p) { ::WTF::fastFree(p); }                 \
                                                                        \
  void* operator new[](size_t size) { return ::WTF::fastMalloc(size); } \
                                                                        \
  void operator delete[](void* p) { ::WTF::fastFree(p); }               \
  void* operator new(size_t, NotNullTag, void* location) {              \
    ASSERT(location);                                                   \
    return location;                                                    \
  }                                                                     \
                                                                        \
 private:                                                               \
  typedef int __thisIsHereToForceASemicolonAfterThisMacro

#endif  // SKY_ENGINE_WTF_FASTALLOCBASE_H_