Redesigned CommandBuffer and NPDevice3D interfaces

gpu/command_buffer/service/command_buffer_service.h

 // 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 bool Initialize(int32 size);
   virtual Buffer GetRingBuffer();
-  virtual int32 GetSize();
-  virtual int32 SyncOffsets(int32 put_offset);
-  virtual int32 GetGetOffset();
+  virtual State GetState();
+  virtual State Flush(int32 put_offset);
   virtual void SetGetOffset(int32 get_offset);
-  virtual int32 GetPutOffset();
   virtual int32 CreateTransferBuffer(size_t size);
   virtual void DestroyTransferBuffer(int32 id);
   virtual Buffer 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();
+  virtual void SetParseError(parse_error::ParseError);
 
   // Sets a callback that should be posted on another thread whenever the put
   // offset is changed. The callback must not return until some progress has
   // been made (unless the command buffer is empty), i.e. the
   // get offset must have changed. It need not process the entire command
   // buffer though. This allows concurrency between the writer and the reader
   // while giving the writer a means of waiting for the reader to make some
   // progress before attempting to write more to the command buffer. Avoiding
   // the use of a synchronization primitive like a condition variable to
   // synchronize reader and writer reduces the risk of deadlock.
   // Takes ownership of callback. The callback is invoked on the plugin thread.
   virtual void SetPutOffsetChangeCallback(Callback0::Type* callback);
 
  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_;
+  parse_error::ParseError error_;
 };
 
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_COMMAND_BUFFER_SERVICE_H_