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/*************************************************************************/
/* thread_work_pool.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "thread_work_pool.h"
#include "core/os/os.h"
void ThreadWorkPool::_thread_function(ThreadData *p_thread) {
while (true) {
p_thread->start.wait();
if (p_thread->exit.load()) {
break;
}
p_thread->work->work();
p_thread->completed.post();
}
}
void ThreadWorkPool::init(int p_thread_count) {
ERR_FAIL_COND(threads != nullptr);
if (p_thread_count < 0) {
p_thread_count = OS::get_singleton()->get_processor_count();
}
thread_count = p_thread_count;
threads = memnew_arr(ThreadData, thread_count);
for (uint32_t i = 0; i < thread_count; i++) {
threads[i].exit.store(false);
threads[i].thread = memnew(std::thread(ThreadWorkPool::_thread_function, &threads[i]));
}
}
void ThreadWorkPool::finish() {
if (threads == nullptr) {
return;
}
for (uint32_t i = 0; i < thread_count; i++) {
threads[i].exit.store(true);
threads[i].start.post();
}
for (uint32_t i = 0; i < thread_count; i++) {
threads[i].thread->join();
memdelete(threads[i].thread);
}
memdelete_arr(threads);
threads = nullptr;
}
ThreadWorkPool::~ThreadWorkPool() {
finish();
}
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