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/ref_counted.h"
  15 #include "base/memory/shared_memory.h"
  16 #include "gpu/command_buffer/common/command_buffer_shared.h"
  17
  18 namespace gpu {
  19
  20 class GPU_EXPORT TransferBufferManagerInterface :
  21     public base::RefCounted<TransferBufferManagerInterface> {
  22  public:
  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  protected:
  29   friend class base::RefCounted<TransferBufferManagerInterface>;
  30
  31   virtual ~TransferBufferManagerInterface();
  32 };
  33
  34 class GPU_EXPORT TransferBufferManager
  35     : public TransferBufferManagerInterface {
  36  public:
  37   TransferBufferManager();
  38
  39   bool Initialize();
  40   bool RegisterTransferBuffer(
  41       int32 id,
  42       scoped_ptr<BufferBacking> buffer_backing) override;
  43   void DestroyTransferBuffer(int32 id) override;
  44   scoped_refptr<Buffer> GetTransferBuffer(int32 id) override;
  45
  46  private:
  47   ~TransferBufferManager() override;
  48
  49   typedef base::hash_map<int32, scoped_refptr<Buffer> > BufferMap;
  50   BufferMap registered_buffers_;
  51   size_t shared_memory_bytes_allocated_;
  52
  53   DISALLOW_COPY_AND_ASSIGN(TransferBufferManager);
  54 };
  55
  56 }  // namespace gpu
  57
  58 #endif  // GPU_COMMAND_BUFFER_SERVICE_TRANSFER_BUFFER_MANAGER_H_