mirror of
https://github.com/pocoproject/poco.git
synced 2024-12-24 15:54:13 +01:00
123 lines
3.7 KiB
C++
123 lines
3.7 KiB
C++
//
|
|
// AsyncChannel.h
|
|
//
|
|
// $Id: //poco/1.4/Foundation/include/Poco/AsyncChannel.h#2 $
|
|
//
|
|
// Library: Foundation
|
|
// Package: Logging
|
|
// Module: AsyncChannel
|
|
//
|
|
// Definition of the AsyncChannel class.
|
|
//
|
|
// Copyright (c) 2004-2007, Applied Informatics Software Engineering GmbH.
|
|
// and Contributors.
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person or organization
|
|
// obtaining a copy of the software and accompanying documentation covered by
|
|
// this license (the "Software") to use, reproduce, display, distribute,
|
|
// execute, and transmit the Software, and to prepare derivative works of the
|
|
// Software, and to permit third-parties to whom the Software is furnished to
|
|
// do so, all subject to the following:
|
|
//
|
|
// The copyright notices in the Software and this entire statement, including
|
|
// the above license grant, this restriction and the following disclaimer,
|
|
// must be included in all copies of the Software, in whole or in part, and
|
|
// all derivative works of the Software, unless such copies or derivative
|
|
// works are solely in the form of machine-executable object code generated by
|
|
// a source language processor.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
|
|
// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
|
|
// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
|
|
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
|
|
// DEALINGS IN THE SOFTWARE.
|
|
//
|
|
|
|
|
|
#ifndef Foundation_AsyncChannel_INCLUDED
|
|
#define Foundation_AsyncChannel_INCLUDED
|
|
|
|
|
|
#include "Poco/Foundation.h"
|
|
#include "Poco/Channel.h"
|
|
#include "Poco/Thread.h"
|
|
#include "Poco/Mutex.h"
|
|
#include "Poco/Runnable.h"
|
|
#include "Poco/NotificationQueue.h"
|
|
|
|
|
|
namespace Poco {
|
|
|
|
|
|
class Foundation_API AsyncChannel: public Channel, public Runnable
|
|
/// A channel uses a separate thread for logging.
|
|
///
|
|
/// Using this channel can help to improve the performance of
|
|
/// applications that produce huge amounts of log messages or
|
|
/// that write log messages to multiple channels simultaneously.
|
|
///
|
|
/// All log messages are put into a queue and this queue is
|
|
/// then processed by a separate thread.
|
|
{
|
|
public:
|
|
AsyncChannel(Channel* pChannel = 0, Thread::Priority prio = Thread::PRIO_NORMAL);
|
|
/// Creates the AsyncChannel and connects it to
|
|
/// the given channel.
|
|
|
|
void setChannel(Channel* pChannel);
|
|
/// Connects the AsyncChannel to the given target channel.
|
|
/// All messages will be forwarded to this channel.
|
|
|
|
Channel* getChannel() const;
|
|
/// Returns the target channel.
|
|
|
|
void open();
|
|
/// Opens the channel and creates the
|
|
/// background logging thread.
|
|
|
|
void close();
|
|
/// Closes the channel and stops the background
|
|
/// logging thread.
|
|
|
|
void log(const Message& msg);
|
|
/// Queues the message for processing by the
|
|
/// background thread.
|
|
|
|
void setProperty(const std::string& name, const std::string& value);
|
|
/// Sets or changes a configuration property.
|
|
///
|
|
/// The "channel" property allows setting the target
|
|
/// channel via the LoggingRegistry.
|
|
/// The "channel" property is set-only.
|
|
///
|
|
/// The "priority" property allows setting the thread
|
|
/// priority. The following values are supported:
|
|
/// * lowest
|
|
/// * low
|
|
/// * normal (default)
|
|
/// * high
|
|
/// * highest
|
|
///
|
|
/// The "priority" property is set-only.
|
|
|
|
protected:
|
|
~AsyncChannel();
|
|
void run();
|
|
void setPriority(const std::string& value);
|
|
|
|
private:
|
|
Channel* _pChannel;
|
|
Thread _thread;
|
|
FastMutex _threadMutex;
|
|
FastMutex _channelMutex;
|
|
NotificationQueue _queue;
|
|
};
|
|
|
|
|
|
} // namespace Poco
|
|
|
|
|
|
#endif // Foundation_AsyncChannel_INCLUDED
|