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/**
* @file lleventtimer.h
* @brief Cross-platform objects for doing timing
*
* $LicenseInfo:firstyear=2000&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2010, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#ifndef LL_EVENTTIMER_H
#define LL_EVENTTIMER_H
#include "llcallbacklist.h"
#include "lldate.h"
#include "stdtypes.h"
// class for scheduling a function to be called at a given frequency (approximate, inprecise)
class LL_COMMON_API LLEventTimer
{
public:
LLEventTimer(F32 period); // period is the amount of time between each call to tick() in seconds
LLEventTimer(const LLDate& time);
virtual ~LLEventTimer();
void start();
void stop();
bool isRunning();
F32 getRemaining();
//function to be called at the supplied frequency
// Normally return false; true will delete the timer after the function returns.
virtual bool tick() = 0;
protected:
LL::Timers::temp_handle_t mTimer;
F32 mPeriod;
};
#endif //LL_EVENTTIMER_H
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