ibrcommon/ibrcommon/thread/Timer.cpp

Go to the documentation of this file.

/*
 * Timer.cpp
 *
 *  Created on: 29.09.2009
 *      Author: morgenro
 */

#include "ibrcommon/config.h"
#include "ibrcommon/thread/Timer.h"
#include "ibrcommon/thread/MutexLock.h"

#include <iostream>
#include <queue>
#include <utility>
#include <sstream>

namespace ibrcommon
{
        size_t Timer::get_current_time()
        {
                time_t rawtime = time(NULL);
                tm * ptm;

                ptm = gmtime ( &rawtime );

                return mktime(ptm);
        }

        Timer::Timer(TimerCallback &callback, size_t timeout)
         : _state(TIMER_UNSET), _callback(callback), _timeout(timeout * 1000)
        {
        }

        Timer::~Timer()
        {
                stop();
        }

        bool Timer::__cancellation()
        {
                {
                        MutexLock l(_state);
                        _state.setState(TIMER_STOPPED);
                        _state.abort();
                }
                join();

                return true;
        }

        void Timer::set(size_t timeout)
        {
                MutexLock l(_state);
                _timeout = timeout * 1000;
                _state.setState(TIMER_RESET);
        }

        void Timer::reset()
        {
                MutexLock l(_state);
                _state.setState(TIMER_RESET);
        }

        void Timer::run()
        {
                MutexLock l(_state);
                _state.setState(TIMER_RUNNING);

                while (_state.ifState(TIMER_RUNNING))
                {
                        try {
                                _state.wait(_timeout);

                                // got signal, check for reset request
                                if (_state.ifState(TIMER_RESET))
                                {
                                        _state.setState(TIMER_RUNNING);
                                }
                                else
                                {
                                        // stop the timer
                                        _state.setState(TIMER_STOPPED);
                                }
                        }
                        catch (const ibrcommon::Conditional::ConditionalAbortException &ex)
                        {
                                switch (ex.reason)
                                {
                                        case ibrcommon::Conditional::ConditionalAbortException::COND_TIMEOUT:
                                        {
                                                // timeout exceeded, call callback method
                                                if (_callback.timeout(this))
                                                {
                                                        // reset the timer
                                                        _state.setState(TIMER_RUNNING);
                                                }
                                                else
                                                {
                                                        // stop the timer
                                                        _state.setState(TIMER_STOPPED);
                                                }
                                                break;
                                        }

                                        case ibrcommon::Conditional::ConditionalAbortException::COND_ABORT:
                                        {
                                                if (_state.ifState(TIMER_STOPPED)) return;
                                                break;
                                        }

                                        case ibrcommon::Conditional::ConditionalAbortException::COND_ERROR:
                                                break;
                                }
                        }

                        yield();
                }
        }

        SimpleTimer::SimpleTimer(SimpleTimerCallback &callback, size_t identifier)
         : _callback(callback), _identifier(identifier)
        {
        }

        SimpleTimer::~SimpleTimer()
        {
                stop();
                join();
        }

        void SimpleTimer::set(size_t timeout)
        {
                ibrcommon::MutexLock l(_timercond);
                _timeout = timeout * 1000;
        }

        bool SimpleTimer::__cancellation()
        {
                {
                        ibrcommon::MutexLock l(_timercond);
                        _timercond.abort();
                }

                return true;
        }

        void SimpleTimer::remove()
        {
                stop();
        }

        void SimpleTimer::run()
        {
                ibrcommon::MutexLock l(_timercond);

                // create
                struct timespec ts;
                ibrcommon::Conditional::gettimeout(_timeout, &ts);

                while (true)
                {
                        try {
                                // wait for the timeout or abort signal
                                _timercond.wait(&ts);
                        } catch (const ibrcommon::Conditional::ConditionalAbortException &ex) {
                                switch (ex.reason)
                                {
                                case ibrcommon::Conditional::ConditionalAbortException::COND_TIMEOUT:
                                        // on timeout call the callback method
                                        _timeout = _callback.timeout(_identifier) * 1000;

                                        // set the new timeout value
                                        ibrcommon::Conditional::gettimeout(_timeout, &ts);
                                        break;

                                case ibrcommon::Conditional::ConditionalAbortException::COND_ERROR:
                                case ibrcommon::Conditional::ConditionalAbortException::COND_ABORT:
                                        return;
                                }
                        }

                        yield();
                }
        }
}