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Adopting changes from asio branch. Currently broken.

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This commit is contained in:
lotodore
2009-05-04 21:11:29 +00:00
parent a65934e2a5
commit 60b5d45c53
23 changed files with 539 additions and 421 deletions
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src/core/common/timermanager.cpp
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/***************************************************************************
* Copyright (C) 2009 by Lothar May *
* *
* 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., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#include <core/timermanager.h>
using namespace std;
TimerManager::TimerManager()
: m_curTimerId(0)
{
}
unsigned
TimerManager::RegisterTimer(unsigned timeoutMsec, boost::function<void()> timerHandler, bool timerRepeat)
{
// Register a new timer callback.
boost::recursive_mutex::scoped_lock lock(m_timerMutex);
// Use a unique id for each timer.
unsigned id = GetNextTimerId();
// Sort all timers by tick on which the callback occurs.
unsigned absoluteTimer = static_cast<unsigned>(m_softwareTimer.elapsed().total_milliseconds()) + timeoutMsec;
m_timerMap.insert(
TimerMap::value_type(absoluteTimer, TimerData(id, timeoutMsec, timerHandler, timerRepeat)));
return id;
}
bool
TimerManager::UnregisterTimer(unsigned timerId)
{
// Remove a timer callback from the map.
boost::recursive_mutex::scoped_lock lock(m_timerMutex);
bool unregistered = false;
TimerMap::iterator i = m_timerMap.begin();
TimerMap::iterator end = m_timerMap.end();
while (i != end)
{
if (i->second.id == timerId)
{
m_timerMap.erase(i);
unregistered = true;
break;
}
++i;
}
return unregistered;
}
void
TimerManager::Process()
{
boost::recursive_mutex::scoped_lock lock(m_timerMutex);
bool timerOccurred;
do
{
timerOccurred = false;
TimerMap::iterator i = m_timerMap.begin();
if (i != m_timerMap.end())
{
// Check whether the timer occured.
unsigned currentTicks = static_cast<unsigned>(m_softwareTimer.elapsed().total_milliseconds());
unsigned timerTicks = i->first;
if (currentTicks >= timerTicks)
{
// Grab a copy of the timer.
TimerData timer = i->second;
// Remove the timer, re-add if it is repeating.
m_timerMap.erase(i);
if (timer.repeat)
{
// Re-add the repeating timer.
// Try to be precise.
unsigned absoluteTimer = currentTicks + timer.msec;
unsigned tickDiff = currentTicks - timerTicks;
if (absoluteTimer >= tickDiff)
absoluteTimer -= tickDiff;
m_timerMap.insert(
TimerMap::value_type(absoluteTimer, timer));
}
// The callback may register/unregister a timer (a recursive mutex is used).
timer.handler();
timerOccurred = true;
}
}
} while (timerOccurred);
}
unsigned
TimerManager::GetNextTimerId()
{
return ++m_curTimerId;
}
src/core/timermanager.h
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/***************************************************************************
* Copyright (C) 2009 by Lothar May *
* *
* 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., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
/* A manager for asynchronous software timer. */
#ifndef _TIMERMANAGER_H_
#define _TIMERMANAGER_H_
#include <map>
#include <boost/thread.hpp>
#include <boost/function.hpp>
#include <third_party/boost/timers.hpp>
class TimerManager
{
public:
TimerManager();
unsigned RegisterTimer(unsigned timeoutMsec, boost::function<void()> timerHandler, bool timerRepeat = false);
bool UnregisterTimer(unsigned timerId);
void Process();
protected:
struct TimerData
{
TimerData(unsigned timerId, unsigned timeoutMsec, boost::function<void()> timerHandler, bool timerRepeat)
: id(timerId), msec(timeoutMsec), handler(timerHandler), repeat(timerRepeat) {}
unsigned id;
unsigned msec;
boost::function<void()> handler;
bool repeat;
};
typedef std::multimap<unsigned, TimerData> TimerMap;
unsigned GetNextTimerId();
private:
mutable boost::recursive_mutex m_timerMutex;
TimerMap m_timerMap;
unsigned m_curTimerId;
boost::timers::portable::microsec_timer m_softwareTimer;
};
#endif