src/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                                       base::SharedMemory* shared_memory,
  25                                       size_t size) = 0;
  26   virtual void DestroyTransferBuffer(int32 id) = 0;
  27   virtual Buffer GetTransferBuffer(int32 id) = 0;
  28
  29 };
  30
  31 class GPU_EXPORT TransferBufferManager
  32     : public TransferBufferManagerInterface {
  33  public:
  34   TransferBufferManager();
  35
  36   bool Initialize();
  37   virtual bool RegisterTransferBuffer(int32 id,
  38                                       base::SharedMemory* shared_memory,
  39                                       size_t size) OVERRIDE;
  40   virtual void DestroyTransferBuffer(int32 id) OVERRIDE;
  41   virtual Buffer GetTransferBuffer(int32 id) OVERRIDE;
  42
  43  private:
  44   virtual ~TransferBufferManager();
  45
  46   typedef base::hash_map<int32, Buffer> BufferMap;
  47   BufferMap registered_buffers_;
  48   size_t shared_memory_bytes_allocated_;
  49
  50   DISALLOW_COPY_AND_ASSIGN(TransferBufferManager);
  51 };
  52
  53 }  // namespace gpu
  54
  55 #endif  // GPU_COMMAND_BUFFER_SERVICE_TRANSFER_BUFFER_MANAGER_H_