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// Copyright (c) 2009 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef GPU_COMMAND_BUFFER_SERVICE_COMMAND_BUFFER_SERVICE_H_
#define GPU_COMMAND_BUFFER_SERVICE_COMMAND_BUFFER_SERVICE_H_
#include <set>
#include <vector>
#include "base/linked_ptr.h"
#include "base/scoped_ptr.h"
#include "base/shared_memory.h"
#include "base/task.h"
#include "gpu/command_buffer/common/command_buffer.h"
namespace gpu {
// An object that implements a shared memory command buffer and a synchronous
// API to manage the put and get pointers.
class CommandBufferService : public CommandBuffer {
public:
CommandBufferService();
virtual ~CommandBufferService();
// CommandBuffer implementation:
virtual base::SharedMemory* Initialize(int32 size);
virtual base::SharedMemory* GetRingBuffer();
virtual int32 GetSize();
virtual int32 SyncOffsets(int32 put_offset);
virtual int32 GetGetOffset();
virtual void SetGetOffset(int32 get_offset);
virtual int32 GetPutOffset();
virtual void SetPutOffsetChangeCallback(Callback0::Type* callback);
virtual int32 CreateTransferBuffer(size_t size);
virtual void DestroyTransferBuffer(int32 id);
virtual base::SharedMemory* GetTransferBuffer(int32 handle);
virtual int32 GetToken();
virtual void SetToken(int32 token);
virtual int32 ResetParseError();
virtual void SetParseError(int32 parse_error);
virtual bool GetErrorStatus();
virtual void RaiseErrorStatus();
private:
scoped_ptr< base::SharedMemory> ring_buffer_;
int32 size_;
int32 get_offset_;
int32 put_offset_;
scoped_ptr<Callback0::Type> put_offset_change_callback_;
std::vector<linked_ptr< base::SharedMemory> > registered_objects_;
std::set<int32> unused_registered_object_elements_;
int32 token_;
int32 parse_error_;
bool error_status_;
};
} // namespace gpu
#endif // GPU_COMMAND_BUFFER_SERVICE_COMMAND_BUFFER_SERVICE_H_
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