mirror of
https://github.com/godotengine/godot.git
synced 2025-10-31 05:31:01 +00:00
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)
81 lines
3.2 KiB
C++
81 lines
3.2 KiB
C++
/*************************************************************************/
|
|
/* thread_work_pool.cpp */
|
|
/*************************************************************************/
|
|
/* This file is part of: */
|
|
/* GODOT ENGINE */
|
|
/* https://godotengine.org */
|
|
/*************************************************************************/
|
|
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
|
|
/* Copyright (c) 2014-2021 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(void *p_user) {
|
|
ThreadData *thread = static_cast<ThreadData *>(p_user);
|
|
while (true) {
|
|
thread->start.wait();
|
|
if (thread->exit.load()) {
|
|
break;
|
|
}
|
|
thread->work->work();
|
|
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.start(&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.wait_to_finish();
|
|
}
|
|
|
|
memdelete_arr(threads);
|
|
threads = nullptr;
|
|
}
|
|
|
|
ThreadWorkPool::~ThreadWorkPool() {
|
|
finish();
|
|
}
|