event.h

This software aims to create an applet and panel tools to manage a wireless interface card, such as

//
// Event.h
//
// $Id: //poco/Main/Foundation/include/Foundation/Event.h#5 $
//
// Definition of the Event class.
//
// Copyright (c) 2004, Guenter Obiltschnig/Applied Informatics.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
//
// 1. Redistributions of source code must retain the above copyright
//    notice, this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
//    notice, this list of conditions and the following disclaimer in the
//    documentation and/or other materials provided with the distribution.
//
// 3. Redistributions in any form must be accompanied by information on
//    how to obtain complete source code for this software and any
//    accompanying software that uses this software.  The source code
//    must either be included in the distribution or be available for no
//    more than the cost of distribution plus a nominal fee, and must be
//    freely redistributable under reasonable conditions.  For an
//    executable file, complete source code means the source code for all
//    modules it contains.  It does not include source code for modules or
//    files that typically accompany the major components of the operating
//    system on which the executable file runs.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
// COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//


#ifndef Foundation_Event_INCLUDED
#define Foundation_Event_INCLUDED


#ifndef Foundation_Foundation_INCLUDED
#include "Foundation/Foundation.h"
#endif
#ifndef Foundation_Exception_INCLUDED
#include "Foundation/Exception.h"
#endif


#if defined(POCO_OS_FAMILY_WINDOWS)
#include "Foundation/Event_WIN32.h"
#else
#include "Foundation/Event_POSIX.h"
#endif


Foundation_BEGIN


class Foundation_API Event: private EventImp
	/// An Event is a synchronization object that
	/// allows one thread to signal one or more
	/// other threads that a certain event
	/// has happened.
	/// Usually, one thread signals an event,
	/// while one or more other threads wait
	/// for an event to become signalled.
{
public:
	Event(bool autoReset = true);
		/// Creates the event. If autoReset is true,
		/// the event is automatically reset after
		/// a wait() successfully returns.
		
	~Event();
		/// Destroys the event.

	void set();
		/// Signals the event. If autoReset is true,
		/// only one thread waiting for the event 
		/// can resume execution.
		/// If autoReset is false, all waiting threads
		/// can resume execution.

	void wait();
		/// Waits for the event to become signalled.

	void wait(long milliseconds);
		/// Waits for the event to become signalled.
		/// Throws a TimeOutException if the event
		/// does not become signalled within the specified
		/// time interval.

	bool tryWait(long milliseconds);
		/// Waits for the event to become signalled.
		/// Returns true if the event
		/// became signalled within the specified
		/// time interval, false otherwise.

	void reset();
		/// Resets the event to unsignalled state.
	
private:
	Event(const Event&);
	Event& operator = (const Event&);
};


//
// inlines
//
inline void Event::set()
{
	setImp();
}


inline void Event::wait()
{
	waitImp();
}


inline void Event::wait(long milliseconds)
{
	if (!waitImp(milliseconds))
		throw TimeoutException();
}


inline bool Event::tryWait(long milliseconds)
{
	return waitImp(milliseconds);
}


inline void Event::reset()
{
	resetImp();
}


Foundation_END


#endif // Foundation_Event_INCLUDED