content/child/child_discardable_shared_memory_manager.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 CONTENT_CHILD_CHILD_DISCARDABLE_SHARED_MEMORY_MANAGER_H_
   6 #define CONTENT_CHILD_CHILD_DISCARDABLE_SHARED_MEMORY_MANAGER_H_
   7
   8 #include "base/memory/discardable_memory_shmem_allocator.h"
   9 #include "base/memory/ref_counted.h"
  10 #include "content/child/thread_safe_sender.h"
  11
  12 namespace content {
  13
  14 // Implementation of DiscardableMemoryShmemAllocator that allocates
  15 // discardable memory segments through the browser process.
  16 class ChildDiscardableSharedMemoryManager
  17     : public base::DiscardableMemoryShmemAllocator {
  18  public:
  19   explicit ChildDiscardableSharedMemoryManager(ThreadSafeSender* sender);
  20   ~ChildDiscardableSharedMemoryManager() override;
  21
  22   // Overridden from base::DiscardableMemoryShmemAllocator:
  23   scoped_ptr<base::DiscardableSharedMemory>
  24   AllocateLockedDiscardableSharedMemory(size_t size) override;
  25
  26  private:
  27   scoped_refptr<ThreadSafeSender> sender_;
  28
  29   DISALLOW_COPY_AND_ASSIGN(ChildDiscardableSharedMemoryManager);
  30 };
  31
  32 }  // namespace content
  33
  34 #endif  // CONTENT_CHILD_CHILD_DISCARDABLE_SHARED_MEMORY_MANAGER_H_