ClickHouse/base/poco/Foundation/include/Poco/ThreadTarget.h

//
// ThreadTarget.h
//
// Library: Foundation
// Package: Threading
// Module:  ThreadTarget
//
// Definition of the ThreadTarget class.
//
// Copyright (c) 2008, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier:	BSL-1.0
//


#ifndef Foundation_ThreadTarget_INCLUDED
#define Foundation_ThreadTarget_INCLUDED


#include "Poco/Foundation.h"
#include "Poco/Runnable.h"


namespace Poco
{


class Foundation_API ThreadTarget : public Runnable
/// This adapter simplifies using static member functions as well as
/// standalone functions as targets for threads.
/// Note that it is possible to pass those entities directly to Thread::start().
/// This adapter is provided as a convenience for higher abstraction level
/// scenarios where Runnable abstract class is used.
///
/// For using a non-static member function as a thread target, please
/// see the RunnableAdapter class.
///
/// Usage:
///    class MyObject
///    {
///        static void doSomething() {}
///    };
///    ThreadTarget ra(&MyObject::doSomething);
///    Thread thr;
///    thr.start(ra);
///
/// or:
///
///    void doSomething() {}
///
///    ThreadTarget ra(doSomething);
///    Thread thr;
///    thr.start(ra);
{
public:
    typedef void (*Callback)();

    ThreadTarget(Callback method);

    ThreadTarget(const ThreadTarget & te);

    ~ThreadTarget();

    ThreadTarget & operator=(const ThreadTarget & te);

    void run();

private:
    ThreadTarget();

    Callback _method;
};


//
// inlines
//
inline void ThreadTarget::run()
{
    _method();
}


} // namespace Poco


#endif // Foundation_ThreadTarget_INCLUDED