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/*
* barrier -- mouse and keyboard sharing utility
* Copyright (C) 2012-2016 Symless Ltd.
* Copyright (C) 2012 Nick Bolton
*
* This package is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* found in the file LICENSE that should have accompanied this file.
*
* This package is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include "arch/Arch.h"
#include "arch/IArchMultithread.h"
#include "base/ILogOutputter.h"
#include "base/String.h"
#include "ipc/Ipc.h"
#include <deque>
#include <mutex>
class IpcServer;
class Event;
class IpcClientProxy;
//! Write log to GUI over IPC
/*!
This outputter writes output to the GUI via IPC.
*/
class IpcLogOutputter : public ILogOutputter {
public:
/*!
If \p useThread is \c true, the buffer will be sent using a thread.
If \p useThread is \c false, then the buffer needs to be sent manually
using the \c sendBuffer() function.
*/
IpcLogOutputter(IpcServer& ipcServer, EIpcClientType clientType, bool useThread);
virtual ~IpcLogOutputter();
// ILogOutputter overrides
virtual void open(const char* title);
virtual void close();
virtual void show(bool showIfEmpty);
virtual bool write(ELevel level, const char* message);
//! @name manipulators
//@{
//! Notify that the buffer should be sent.
void notifyBuffer();
//! Set the buffer size
/*!
Set the maximum size of the buffer to protect memory
from runaway logging.
*/
void bufferMaxSize(UInt16 bufferMaxSize);
//! Set the rate limit
/*!
Set the maximum number of \p writeRate for every \p timeRate in seconds.
*/
void bufferRateLimit(UInt16 writeLimit, double timeLimit);
//! Send the buffer
/*!
Sends a chunk of the buffer to the IPC server, normally called
when threaded mode is on.
*/
void sendBuffer();
//@}
//! @name accessors
//@{
//! Get the buffer size
/*!
Returns the maximum size of the buffer.
*/
UInt16 bufferMaxSize() const;
//@}
private:
void init();
void bufferThread(void*);
std::string getChunk(size_t count);
void appendBuffer(const std::string& text);
bool isRunning();
private:
typedef std::deque<std::string> Buffer;
IpcServer& m_ipcServer;
Buffer m_buffer;
std::mutex m_bufferMutex;
bool m_sending;
Thread* m_bufferThread;
bool m_running;
ArchCond m_notifyCond;
ArchMutex m_notifyMutex;
bool m_bufferWaiting;
IArchMultithread::ThreadID
m_bufferThreadId;
UInt16 m_bufferMaxSize;
UInt16 m_bufferRateWriteLimit;
double m_bufferRateTimeLimit;
UInt16 m_bufferWriteCount;
double m_bufferRateStart;
EIpcClientType m_clientType;
std::mutex m_runningMutex;
};
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