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// **********************************************************************
//
// Copyright (c) 2003-2008 ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************
#include <IceUtil/Timer.h>
#include <IceUtil/Exception.h>
using namespace std;
using namespace IceUtil;
Timer::Timer() : _destroyed(false)
{
start();
}
void
Timer::destroy()
{
{
IceUtil::Monitor<IceUtil::Mutex>::Lock sync(_monitor);
if(_destroyed)
{
return;
}
_destroyed = true;
_monitor.notify();
_tasks.clear();
_tokens.clear();
}
if(getThreadControl() == ThreadControl())
{
getThreadControl().detach();
}
else
{
getThreadControl().join();
}
}
void
Timer::schedule(const TimerTaskPtr& task, const IceUtil::Time& delay)
{
IceUtil::Monitor<IceUtil::Mutex>::Lock sync(_monitor);
if(_destroyed)
{
throw IllegalArgumentException(__FILE__, __LINE__, "timer destroyed");
}
IceUtil::Time time = IceUtil::Time::now(IceUtil::Time::Monotonic) + delay;
bool inserted = _tasks.insert(make_pair(task, time)).second;
if(!inserted)
{
throw IllegalArgumentException(__FILE__, __LINE__, "task is already schedulded");
}
_tokens.insert(Token(time, IceUtil::Time(), task));
if(_wakeUpTime == IceUtil::Time() || time < _wakeUpTime)
{
_monitor.notify();
}
}
void
Timer::scheduleRepeated(const TimerTaskPtr& task, const IceUtil::Time& delay)
{
IceUtil::Monitor<IceUtil::Mutex>::Lock sync(_monitor);
if(_destroyed)
{
throw IllegalArgumentException(__FILE__, __LINE__, "timer destroyed");
}
const Token token(IceUtil::Time::now(IceUtil::Time::Monotonic) + delay, delay, task);
bool inserted = _tasks.insert(make_pair(task, token.scheduledTime)).second;
if(!inserted)
{
throw IllegalArgumentException(__FILE__, __LINE__, "task is already schedulded");
}
_tokens.insert(token);
if(_wakeUpTime == IceUtil::Time() || token.scheduledTime < _wakeUpTime)
{
_monitor.notify();
}
}
bool
Timer::cancel(const TimerTaskPtr& task)
{
IceUtil::Monitor<IceUtil::Mutex>::Lock sync(_monitor);
if(_destroyed)
{
return false;
}
map<TimerTaskPtr, IceUtil::Time, TimerTaskCompare>::iterator p = _tasks.find(task);
if(p == _tasks.end())
{
return false;
}
_tokens.erase(Token(p->second, IceUtil::Time(), p->first));
_tasks.erase(p);
return true;
}
void
Timer::run()
{
Token token(IceUtil::Time(), IceUtil::Time(), 0);
while(true)
{
{
IceUtil::Monitor<IceUtil::Mutex>::Lock sync(_monitor);
if(!_destroyed)
{
//
// If the task we just ran is a repeated task, schedule it
// again for executation if it wasn't canceled.
//
if(token.delay != IceUtil::Time())
{
map<TimerTaskPtr, IceUtil::Time, TimerTaskCompare>::iterator p = _tasks.find(token.task);
if(p != _tasks.end())
{
token.scheduledTime = IceUtil::Time::now(IceUtil::Time::Monotonic) + token.delay;
p->second = token.scheduledTime;
_tokens.insert(token);
}
}
token = Token(IceUtil::Time(), IceUtil::Time(), 0);
if(_tokens.empty())
{
_wakeUpTime = IceUtil::Time();
_monitor.wait();
}
}
if(_destroyed)
{
break;
}
while(!_tokens.empty() && !_destroyed)
{
const IceUtil::Time now = IceUtil::Time::now(IceUtil::Time::Monotonic);
const Token& first = *(_tokens.begin());
if(first.scheduledTime <= now)
{
token = first;
_tokens.erase(_tokens.begin());
if(token.delay == IceUtil::Time())
{
_tasks.erase(token.task);
}
break;
}
_wakeUpTime = first.scheduledTime;
_monitor.timedWait(first.scheduledTime - now);
}
if(_destroyed)
{
break;
}
}
if(token.task)
{
try
{
token.task->runTimerTask();
}
catch(const std::exception& e)
{
cerr << "IceUtil::Timer::run(): uncaught exception:\n" << e.what() << endl;
}
catch(...)
{
cerr << "IceUtil::Timer::run(): uncaught exception" << endl;
}
}
}
}
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