152 lines
3.9 KiB
C++
152 lines
3.9 KiB
C++
|
/*
|
||
|
* This file is a part of TTCalc - a mathematical calculator
|
||
|
* and is distributed under the (new) BSD licence.
|
||
|
* Author: Tomasz Sowa <t.sowa@ttmath.org>
|
||
|
*/
|
||
|
|
||
|
/*
|
||
|
* Copyright (c) 2006-2008, Tomasz Sowa
|
||
|
* All rights reserved.
|
||
|
*
|
||
|
* Redistribution and use in source and binary forms, with or without
|
||
|
* modification, are permitted provided that the following conditions are met:
|
||
|
*
|
||
|
* * Redistributions of source code must retain the above copyright notice,
|
||
|
* this list of conditions and the following disclaimer.
|
||
|
*
|
||
|
* * Redistributions in binary form must reproduce the above copyright
|
||
|
* notice, this list of conditions and the following disclaimer in the
|
||
|
* documentation and/or other materials provided with the distribution.
|
||
|
*
|
||
|
* * Neither the name Tomasz Sowa nor the names of contributors to this
|
||
|
* project may be used to endorse or promote products derived
|
||
|
* from this software without specific prior written permission.
|
||
|
*
|
||
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
||
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
|
||
|
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
||
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
||
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
||
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
||
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
||
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
|
||
|
* THE POSSIBILITY OF SUCH DAMAGE.
|
||
|
*/
|
||
|
|
||
|
#include "threadcontroller.h"
|
||
|
#include <cstdio>
|
||
|
|
||
|
|
||
|
|
||
|
ThreadController::ThreadController()
|
||
|
{
|
||
|
calculations = 0;
|
||
|
ready_for_stop = 0;
|
||
|
exit_thread = false;
|
||
|
}
|
||
|
|
||
|
|
||
|
ThreadController::~ThreadController()
|
||
|
{
|
||
|
if(calculations) CloseHandle(calculations);
|
||
|
if(ready_for_stop) CloseHandle(ready_for_stop);
|
||
|
}
|
||
|
|
||
|
|
||
|
bool ThreadController::Init() volatile
|
||
|
{
|
||
|
char * buffer = new char[300];
|
||
|
|
||
|
// with 'GetTickCount()' we're generating an unique identifier of our event
|
||
|
// (there can be another window of ttcalc)
|
||
|
sprintf((char*)buffer,"TTCalcEventForManagingThreads9928%u",
|
||
|
(unsigned int)GetTickCount());
|
||
|
|
||
|
// 'calculations' will be for auto-reseting and initialized as non-signaled
|
||
|
if( (calculations = CreateEvent(0,false,false,(char*)buffer))==NULL)
|
||
|
{
|
||
|
delete [] buffer;
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
sprintf((char*)buffer,"TTCalcEventReadyForStop5567%u",
|
||
|
(unsigned int)GetTickCount());
|
||
|
|
||
|
// 'ready_for_stop' will be for manual-reseting and initialized as signaled
|
||
|
// 'manual-reset' means that we must call ResetEvent() function (from WinAPI)
|
||
|
// to manually reset the state to nonsignaled
|
||
|
if( (ready_for_stop = CreateEvent(0,true,true,(char*)buffer))==NULL)
|
||
|
{
|
||
|
delete [] buffer;
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
delete [] buffer;
|
||
|
|
||
|
return stop_calculating.Init();
|
||
|
}
|
||
|
|
||
|
|
||
|
void ThreadController::ReadyForStop() volatile
|
||
|
{
|
||
|
SetEvent( ready_for_stop );
|
||
|
}
|
||
|
|
||
|
|
||
|
void ThreadController::StopCalculatingAndExitThread() volatile
|
||
|
{
|
||
|
WaitForSingleObject(ready_for_stop,INFINITE);
|
||
|
|
||
|
stop_calculating.Stop();
|
||
|
exit_thread = true;
|
||
|
SetEvent(calculations);
|
||
|
}
|
||
|
|
||
|
|
||
|
void ThreadController::StopCalculating() volatile
|
||
|
{
|
||
|
WaitForSingleObject(ready_for_stop, INFINITE);
|
||
|
|
||
|
stop_calculating.Stop();
|
||
|
}
|
||
|
|
||
|
|
||
|
void ThreadController::StartCalculating() volatile
|
||
|
{
|
||
|
SetEvent(calculations);
|
||
|
}
|
||
|
|
||
|
|
||
|
volatile bool ThreadController::WaitForCalculatingAndBlockForStop() volatile
|
||
|
{
|
||
|
WaitForSingleObject(calculations,INFINITE);
|
||
|
ResetEvent(ready_for_stop);
|
||
|
|
||
|
stop_calculating.Start();
|
||
|
|
||
|
return !exit_thread;
|
||
|
}
|
||
|
|
||
|
|
||
|
const volatile ttmath::StopCalculating * ThreadController::GetStopObject() volatile const
|
||
|
{
|
||
|
return &stop_calculating;
|
||
|
}
|
||
|
|
||
|
|
||
|
bool ThreadController::WasStopSignal() volatile const
|
||
|
{
|
||
|
return stop_calculating.WasStopSignal();
|
||
|
}
|
||
|
|
||
|
|
||
|
// private
|
||
|
ThreadController::ThreadController(const ThreadController &)
|
||
|
{
|
||
|
}
|
||
|
|
||
|
|
||
|
|