gpu/command_buffer/service/transfer_buffer_manager.h

   1 // Copyright (c) 2012 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 GPU_COMMAND_BUFFER_SERVICE_TRANSFER_BUFFER_MANAGER_H_
   6 #define GPU_COMMAND_BUFFER_SERVICE_TRANSFER_BUFFER_MANAGER_H_
   7
   8 #include <set>
   9 #include <vector>
  10
  11 #include "base/basictypes.h"
  12 #include "base/compiler_specific.h"
  13 #include "base/containers/hash_tables.h"
  14 #include "base/memory/shared_memory.h"
  15 #include "gpu/command_buffer/common/command_buffer_shared.h"
  16
  17 namespace gpu {
  18
  19 class GPU_EXPORT TransferBufferManagerInterface {
  20  public:
  21   virtual ~TransferBufferManagerInterface();
  22
  23   virtual bool RegisterTransferBuffer(int32 id,
  24                                       scoped_ptr<BufferBacking> buffer) = 0;
  25   virtual void DestroyTransferBuffer(int32 id) = 0;
  26   virtual scoped_refptr<Buffer> GetTransferBuffer(int32 id) = 0;
  27 };
  28
  29 class GPU_EXPORT TransferBufferManager
  30     : public TransferBufferManagerInterface {
  31  public:
  32   TransferBufferManager();
  33
  34   bool Initialize();
  35   bool RegisterTransferBuffer(
  36       int32 id,
  37       scoped_ptr<BufferBacking> buffer_backing) override;
  38   void DestroyTransferBuffer(int32 id) override;
  39   scoped_refptr<Buffer> GetTransferBuffer(int32 id) override;
  40
  41  private:
  42   ~TransferBufferManager() override;
  43
  44   typedef base::hash_map<int32, scoped_refptr<Buffer> > BufferMap;
  45   BufferMap registered_buffers_;
  46   size_t shared_memory_bytes_allocated_;
  47
  48   DISALLOW_COPY_AND_ASSIGN(TransferBufferManager);
  49 };
  50
  51 }  // namespace gpu
  52
  53 #endif  // GPU_COMMAND_BUFFER_SERVICE_TRANSFER_BUFFER_MANAGER_H_