gpu/command_buffer/service/cmd_buffer_engine.h

/*
 * Copyright 2009, Google Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */


// This file defines the CommandBufferEngine class, providing the main loop for
// the service, exposing the RPC API, managing the command parser.

#ifndef GPU_COMMAND_BUFFER_SERVICE_CROSS_CMD_BUFFER_ENGINE_H_
#define GPU_COMMAND_BUFFER_SERVICE_CROSS_CMD_BUFFER_ENGINE_H_

#include "base/basictypes.h"

namespace command_buffer {

class CommandBufferEngine {
 public:
  CommandBufferEngine() {
  }

  virtual ~CommandBufferEngine() {
  }

  // Gets the base address of a registered shared memory buffer.
  // Parameters:
  //   shm_id: the identifier for the shared memory buffer.
  virtual void *GetSharedMemoryAddress(int32 shm_id) = 0;

  // Gets the size of a registered shared memory buffer.
  // Parameters:
  //   shm_id: the identifier for the shared memory buffer.
  virtual size_t GetSharedMemorySize(int32 shm_id) = 0;

  // Sets the token value.
  virtual void set_token(int32 token) = 0;

 private:
  DISALLOW_COPY_AND_ASSIGN(CommandBufferEngine);
};

}  // namespace command_buffer

#endif  // GPU_COMMAND_BUFFER_SERVICE_CROSS_CMD_BUFFER_ENGINE_H_