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/*
* ThreadManager.cpp
*
* Copyright (C) 2009 Matthias Schiffer <matthias@gamezock.de>
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include "ThreadManager.h"
#include "Application.h"
#include "LogManager.h"
#include <boost/bind.hpp>
namespace Mad {
namespace Core {
void ThreadManager::workerFunc() {
while(true) {
boost::unique_lock<boost::mutex> lock(runLock);
if(!running || !isThisWorkerThread())
break;
lock.unlock();
boost::unique_lock<boost::mutex> lock2(workLock);
while(work.empty()) {
workCond.wait(lock2);
if(!running)
return;
}
boost::function0<void> nextWork = work.front();
work.pop();
lock2.unlock();
nextWork();
}
// And let the new worker thread join us...
pushWork(boost::bind(&ThreadManager::threadFinished, this, boost::this_thread::get_id()));
}
void ThreadManager::detach() {
if(isThisMainThread()) {
application->log(Logger::CRITICAL, "Tried to detach main thread! This is just WRONG!");
return;
}
{
boost::lock_guard<boost::mutex> lock(runLock);
if(!running)
return; // There's no point in creating a new worker thread when we aren't running anymore
}
threadLock.lock();
if(workerThread->get_id() == boost::this_thread::get_id()) {// Already detached?
threads.insert(std::make_pair(boost::this_thread::get_id(), workerThread));
workerThread.reset(new boost::thread(std::mem_fun(&ThreadManager::workerFunc), this));
}
threadLock.unlock();
}
void ThreadManager::pushWork(const boost::function0<void> &newWork) {
workLock.lock();
work.push(newWork);
workLock.unlock();
workCond.notify_one();
}
ThreadManager::ThreadManager(Application *application0) : application(application0), running(true) {
threadLock.lock();
ioWorker.reset(new boost::asio::io_service::work(application->getIOService()));
mainThreadId = boost::this_thread::get_id();
workerThread.reset(new boost::thread(&ThreadManager::workerFunc, this));
loggerThread.reset(new boost::thread(&LogManager::loggerThread, application->getLogManager()));
ioThread.reset(new boost::thread((std::size_t(boost::asio::io_service::*)())&boost::asio::io_service::run, &application->getIOService()));
threadLock.unlock();
}
ThreadManager::~ThreadManager() {
if(!isThisMainThread()) {
// TODO Critical error!!!
return;
}
// First set running = false so the worker threads quit
boost::lock(runLock, workLock);
running = false;
workLock.unlock();
runLock.unlock();
workCond.notify_one();
// We don't have to lock threadLock as detach() won't change workerThread when running is false
workerThread->join();
// Now wait for all detached threads
while(!threads.empty()) {
threadFinished(threads.begin()->first);
}
// IO thread is next
ioWorker.reset();
application->getIOService().stop();
ioThread->join();
// Finally, the logger thread has to die
application->getLogManager()->stopLoggerThread();
loggerThread->join();
}
}
}
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