tomFlowee
bb7275466b
This ports the io-service to the source compatible io-context class, with the most work going to the WorkerThreads which owns that one.
85 lines
2.4 KiB
C++
85 lines
2.4 KiB
C++
/*
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* This file is part of the Flowee project
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* Copyright (C) 2016-2025 Tom Zander <tom@flowee.org>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (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, see <http://www.gnu.org/licenses/>.
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*/
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#include "WorkerThreads.h"
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#include "Logger.h"
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WorkerThreads::Work::Work(const std::shared_ptr<boost::asio::io_context> &context)
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: work(boost::asio::make_work_guard(*context))
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{
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}
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// ------------------------------------
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WorkerThreads::WorkerThreads(int threadCount)
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{
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startThreads(threadCount);
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}
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void WorkerThreads::startThreads(int threadCount)
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{
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if (threadCount < 1)
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threadCount = boost::thread::hardware_concurrency();
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threadCount = std::max(threadCount, 2);
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m_context = std::make_shared<boost::asio::io_context>();
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m_work.reset(new Work(m_context));
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for (int i = threadCount; i > 0; --i) {
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auto context(m_context);
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m_threads.create_thread([context] {
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#if defined(PR_SET_NAME)
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// Only the first 15 characters are used (16 - NUL terminator)
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::prctl(PR_SET_NAME, "Worker-threads", 0, 0, 0);
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#endif
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while(true) {
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try {
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context->run();
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return;
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} catch (const boost::thread_interrupted&) {
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return;
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} catch (const std::exception& ex) {
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logCritical(Log::Flowee) << "Threadgroup: uncaught exception" << ex;
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}
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}
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});
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}
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}
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WorkerThreads::~WorkerThreads()
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{
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stopThreads();
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joinAll();
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}
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void WorkerThreads::stopThreads()
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{
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m_work.reset();
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if (m_context.get()) // it gets reset() by joinAll
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m_context->stop();
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}
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void WorkerThreads::joinAll()
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{
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m_threads.join_all();
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m_context.reset(); // tasks don't get garbage-collected until the destructor is ran
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}
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boost::asio::io_context& WorkerThreads::ioContext() const
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{
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return *m_context;
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}
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