mirror of https://github.com/Icinga/icinga2.git
115 lines
2.9 KiB
C++
115 lines
2.9 KiB
C++
/******************************************************************************
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* Icinga 2 *
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* Copyright (C) 2012 Icinga Development Team (http://www.icinga.org/) *
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* *
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* This program is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU General Public License *
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* as published by the Free Software Foundation; either version 2 *
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* of the License, or (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the Free Software Foundation *
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
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******************************************************************************/
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#include "i2-base.h"
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using namespace icinga;
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ThreadPool::ThreadPool(long numThreads)
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: m_Alive(true)
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{
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for (long i = 0; i < numThreads; i++)
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m_Threads.create_thread(boost::bind(&ThreadPool::WorkerThreadProc, this));
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}
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ThreadPool::~ThreadPool(void)
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{
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{
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mutex::scoped_lock lock(m_Lock);
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m_Tasks.clear();
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/* notify worker threads to exit */
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m_Alive = false;
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m_CV.notify_all();
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}
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m_Threads.join_all();
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}
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void ThreadPool::EnqueueTasks(list<ThreadPoolTask::Ptr>& tasks)
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{
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{
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mutex::scoped_lock lock(m_Lock);
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m_Tasks.splice(m_Tasks.end(), tasks, tasks.begin(), tasks.end());
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}
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m_CV.notify_all();
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}
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void ThreadPool::EnqueueTask(const ThreadPoolTask::Ptr& task)
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{
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{
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mutex::scoped_lock lock(m_Lock);
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m_Tasks.push_back(task);
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}
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m_CV.notify_one();
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}
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ThreadPoolTask::Ptr ThreadPool::DequeueTask(void)
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{
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mutex::scoped_lock lock(m_Lock);
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while (m_Tasks.empty()) {
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if (!m_Alive)
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return ThreadPoolTask::Ptr();
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m_CV.wait(lock);
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}
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ThreadPoolTask::Ptr task = m_Tasks.front();
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m_Tasks.pop_front();
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return task;
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}
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void ThreadPool::WaitForTasks(void)
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{
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mutex::scoped_lock lock(m_Lock);
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/* wait for all pending tasks */
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while (!m_Tasks.empty())
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m_CV.wait(lock);
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}
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void ThreadPool::WorkerThreadProc(void)
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{
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while (true) {
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ThreadPoolTask::Ptr task = DequeueTask();
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if (!task)
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break;
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task->Execute();
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}
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}
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ThreadPool::Ptr ThreadPool::GetDefaultPool(void)
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{
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static ThreadPool::Ptr threadPool;
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if (!threadPool)
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threadPool = boost::make_shared<ThreadPool>();
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return threadPool;
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}
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