99fe462452
- Based on C++11's `thread` and `thread_local` - No more need to allocate-deallocate or check for null - No pointer anymore, just a member variable - Platform-specific implementations no longer needed (except for the few cases of non-portable functions) - Simpler for `NO_THREADS` - Thread ids are now the same across platforms (main is 1; others follow)
82 lines
3.2 KiB
C++
82 lines
3.2 KiB
C++
/*************************************************************************/
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/* thread_work_pool.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "thread_work_pool.h"
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#include "core/os/os.h"
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void ThreadWorkPool::_thread_function(void *p_user) {
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ThreadData *thread = static_cast<ThreadData *>(p_user);
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while (true) {
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thread->start.wait();
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if (thread->exit.load()) {
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break;
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}
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thread->work->work();
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thread->completed.post();
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}
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}
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void ThreadWorkPool::init(int p_thread_count) {
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ERR_FAIL_COND(threads != nullptr);
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if (p_thread_count < 0) {
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p_thread_count = OS::get_singleton()->get_processor_count();
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}
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thread_count = p_thread_count;
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threads = memnew_arr(ThreadData, thread_count);
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for (uint32_t i = 0; i < thread_count; i++) {
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threads[i].exit.store(false);
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threads[i].thread.start(&ThreadWorkPool::_thread_function, &threads[i]);
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}
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}
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void ThreadWorkPool::finish() {
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if (threads == nullptr) {
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return;
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}
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for (uint32_t i = 0; i < thread_count; i++) {
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threads[i].exit.store(true);
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threads[i].start.post();
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}
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for (uint32_t i = 0; i < thread_count; i++) {
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threads[i].thread.wait_to_finish();
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}
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memdelete_arr(threads);
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threads = nullptr;
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}
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ThreadWorkPool::~ThreadWorkPool() {
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finish();
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}
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