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53 lines
1.5 KiB
C++
53 lines
1.5 KiB
C++
/*
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* This file is part of OpenTTD.
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* OpenTTD 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, version 2.
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* OpenTTD 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.
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* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** @file worker_thread.h Worker thread pool utility. */
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#ifndef WORKER_THREAD_H
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#define WORKER_THREAD_H
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#include "core/ring_buffer_queue.hpp"
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#include <mutex>
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#include <condition_variable>
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typedef void WorkerJobFunc(void *, void *, void *);
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struct WorkerThreadPool {
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private:
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struct WorkerJob {
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WorkerJobFunc *func;
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void *data1;
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void *data2;
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void *data3;
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};
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uint workers = 0;
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uint workers_waiting = 0;
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bool exit = false;
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std::mutex lock;
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ring_buffer_queue<WorkerJob> jobs;
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std::condition_variable worker_wait_cv;
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std::condition_variable done_cv;
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static void Run(WorkerThreadPool *pool);
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public:
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void Start(const char *thread_name, uint max_workers);
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void Stop();
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void EnqueueJob(WorkerJobFunc *func, void *data1 = nullptr, void *data2 = nullptr, void *data3 = nullptr);
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~WorkerThreadPool()
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{
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this->Stop();
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}
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};
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extern WorkerThreadPool _general_worker_pool;
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#endif /* WORKER_THREAD_H */
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