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/*
* 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.
*/
#ifndef O3D_COMMAND_BUFFER_COMMON_CROSS_RPC_IMC_H_
#define O3D_COMMAND_BUFFER_COMMON_CROSS_RPC_IMC_H_
#include "third_party/native_client/googleclient/native_client/src/shared/imc/nacl_imc.h"
#include "base/scoped_ptr.h"
#include "command_buffer/common/cross/rpc.h"
namespace o3d {
namespace command_buffer {
class IMCSender : public RPCSendInterface {
public:
explicit IMCSender(nacl::HtpHandle handle) : handle_(handle) {}
virtual ~IMCSender() {}
// Sends a call to the server thread. This call will be dispatched by the
// server thread to the RPC implementation. This call will block until the
// call is processed and the return value is sent back.
// Parameters:
// message_id: the RPC message ID.
// data: the RPC message payload.
// size: the size of the data.
// handles: an array of RPC handles to transmit
// handle_count: the number of RPC handles in the array
// Returns:
// the return value of the RPC call.
virtual RPCImplInterface::ReturnValue SendCall(int message_id,
const void * data,
size_t size,
RPCHandle const *handles,
size_t handle_count);
private:
nacl::HtpHandle handle_;
};
class IMCMessageProcessor : public RPCProcessInterface {
public:
IMCMessageProcessor(nacl::HtpHandle handle, RPCImplInterface *impl)
: handle_(handle),
impl_(impl),
has_message_(false),
incoming_message_id_(0),
incoming_message_size_(0),
incoming_message_handles_(0),
data_size_(0),
handle_count_(0) {}
virtual ~IMCMessageProcessor() {}
// Processes one message, blocking if necessary until a message is available
// or the server is killed. This will dispatch the received message to the
// RPC implementation, and send back a response message with the return
// value to the client.
// Returns:
// false if the server was killed.
virtual bool ProcessMessage();
// Checks whether a message is available for processing - allowing to test if
// ProcessMessage will block.
// Returns:
// true if a message is available.
virtual bool HasMessage();
private:
bool GetMessageIDSize(bool wait);
nacl::HtpHandle handle_;
RPCImplInterface *impl_;
bool has_message_;
int incoming_message_id_;
size_t incoming_message_size_;
size_t incoming_message_handles_;
size_t data_size_;
scoped_array<char> data_;
size_t handle_count_;
scoped_array<RPCHandle> handles_;
};
} // namespace command_buffer
} // namespace o3d
#endif // O3D_COMMAND_BUFFER_COMMON_CROSS_RPC_IMC_H_
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