base/memory/discardable_memory_malloc.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef BASE_MEMORY_DISCARDABLE_MEMORY_MALLOC_H_
   6 #define BASE_MEMORY_DISCARDABLE_MEMORY_MALLOC_H_
   7
   8 #include "base/memory/discardable_memory.h"
   9
  10 namespace base {
  11 namespace internal {
  12
  13 class DiscardableMemoryMalloc : public DiscardableMemory {
  14  public:
  15   explicit DiscardableMemoryMalloc(size_t size);
  16   virtual ~DiscardableMemoryMalloc();
  17
  18   bool Initialize();
  19
  20   // Overridden from DiscardableMemory:
  21   virtual DiscardableMemoryLockStatus Lock() OVERRIDE;
  22   virtual void Unlock() OVERRIDE;
  23   virtual void* Memory() const OVERRIDE;
  24
  25  private:
  26   scoped_ptr<uint8, FreeDeleter> memory_;
  27   const size_t size_;
  28
  29   DISALLOW_COPY_AND_ASSIGN(DiscardableMemoryMalloc);
  30 };
  31
  32 }  // namespace internal
  33 }  // namespace base
  34
  35 #endif  // BASE_MEMORY_DISCARDABLE_MEMORY_MALLOC_H_