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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $URL$
* $Id$
*/
#ifndef COMMON_TIMER_H
#define COMMON_TIMER_H
#include "common/scummsys.h"
#include "common/system.h"
#include "common/noncopyable.h"
namespace Common {
class TimerManager : NonCopyable {
public:
typedef void (*TimerProc)(void *refCon);
virtual ~TimerManager() {}
/**
* Install a new timer callback. It will from now be called every interval microseconds.
* The timer may be invoked from a separate thread. Hence any timer code should be
* written following the same safety guidelines as any other threaded code.
*
* @note Although the interval is specified in microseconds, the actual timer resolution
* may be lower. In particular, with the SDL backend the timer resolution is 10ms.
* @param proc the callback
* @param interval the interval in which the timer shall be invoked (in microseconds)
* @param refCon an arbitrary void pointer; will be passed to the timer callback
* @return true if the timer was installed successfully, false otherwise
*/
virtual bool installTimerProc(TimerProc proc, int32 interval, void *refCon) = 0;
/**
* Remove the given timer callback. It will not be invoked anymore,
* and no instance of this callback will be running anymore.
*/
virtual void removeTimerProc(TimerProc proc) = 0;
};
} // End of namespace Common
#endif
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