poco/Foundation/src/AsyncChannel.cpp
2014-09-19 09:46:49 +02:00

171 lines
2.8 KiB
C++

//
// AsyncChannel.cpp
//
// $Id: //poco/1.4/Foundation/src/AsyncChannel.cpp#1 $
//
// Library: Foundation
// Package: Logging
// Module: AsyncChannel
//
// Copyright (c) 2004-2007, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#include "Poco/AsyncChannel.h"
#include "Poco/Notification.h"
#include "Poco/Message.h"
#include "Poco/Formatter.h"
#include "Poco/AutoPtr.h"
#include "Poco/LoggingRegistry.h"
#include "Poco/Exception.h"
namespace Poco {
class MessageNotification: public Notification
{
public:
MessageNotification(const Message& msg):
_msg(msg)
{
}
~MessageNotification()
{
}
const Message& message() const
{
return _msg;
}
private:
Message _msg;
};
AsyncChannel::AsyncChannel(Channel* pChannel, Thread::Priority prio):
_pChannel(pChannel),
_thread("AsyncChannel")
{
if (_pChannel) _pChannel->duplicate();
_thread.setPriority(prio);
}
AsyncChannel::~AsyncChannel()
{
try
{
close();
if (_pChannel) _pChannel->release();
}
catch (...)
{
poco_unexpected();
}
}
void AsyncChannel::setChannel(Channel* pChannel)
{
FastMutex::ScopedLock lock(_channelMutex);
if (_pChannel) _pChannel->release();
_pChannel = pChannel;
if (_pChannel) _pChannel->duplicate();
}
Channel* AsyncChannel::getChannel() const
{
return _pChannel;
}
void AsyncChannel::open()
{
FastMutex::ScopedLock lock(_threadMutex);
if (!_thread.isRunning())
_thread.start(*this);
}
void AsyncChannel::close()
{
if (_thread.isRunning())
{
while (!_queue.empty()) Thread::sleep(100);
do
{
_queue.wakeUpAll();
}
while (!_thread.tryJoin(100));
}
}
void AsyncChannel::log(const Message& msg)
{
open();
_queue.enqueueNotification(new MessageNotification(msg));
}
void AsyncChannel::setProperty(const std::string& name, const std::string& value)
{
if (name == "channel")
setChannel(LoggingRegistry::defaultRegistry().channelForName(value));
else if (name == "priority")
setPriority(value);
else
Channel::setProperty(name, value);
}
void AsyncChannel::run()
{
AutoPtr<Notification> nf = _queue.waitDequeueNotification();
while (nf)
{
MessageNotification* pNf = dynamic_cast<MessageNotification*>(nf.get());
{
FastMutex::ScopedLock lock(_channelMutex);
if (pNf && _pChannel) _pChannel->log(pNf->message());
}
nf = _queue.waitDequeueNotification();
}
}
void AsyncChannel::setPriority(const std::string& value)
{
Thread::Priority prio = Thread::PRIO_NORMAL;
if (value == "lowest")
prio = Thread::PRIO_LOWEST;
else if (value == "low")
prio = Thread::PRIO_LOW;
else if (value == "normal")
prio = Thread::PRIO_NORMAL;
else if (value == "high")
prio = Thread::PRIO_HIGH;
else if (value == "highest")
prio = Thread::PRIO_HIGHEST;
else
throw InvalidArgumentException("thread priority", value);
_thread.setPriority(prio);
}
} // namespace Poco