mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-15 19:02:04 +00:00
b79ead9c84
* Replicate poco into base/poco/ * De-register poco submodule * Build poco from ClickHouse * Exclude poco from stylecheck * Exclude poco from whitespace check * Exclude poco from typo check * Remove x bit from sources/headers (the style check complained) * Exclude poco from duplicate include check * Fix fasttest * Remove contrib/poco-cmake/* * Simplify poco build descriptions * Remove poco stuff not used by ClickHouse * Glob poco sources * Exclude poco from clang-tidy
101 lines
2.4 KiB
C++
101 lines
2.4 KiB
C++
//
|
|
// AsyncChannel.h
|
|
//
|
|
// Library: Foundation
|
|
// Package: Logging
|
|
// Module: AsyncChannel
|
|
//
|
|
// Definition of the AsyncChannel class.
|
|
//
|
|
// Copyright (c) 2004-2007, Applied Informatics Software Engineering GmbH.
|
|
// and Contributors.
|
|
//
|
|
// SPDX-License-Identifier: BSL-1.0
|
|
//
|
|
|
|
|
|
#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
|