/**************************************************************************/ /* condition_variable.h */ /**************************************************************************/ /* This file is part of: */ /* GODOT ENGINE */ /* https://godotengine.org */ /**************************************************************************/ /* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */ /* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */ /* */ /* 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. */ /**************************************************************************/ #ifndef CONDITION_VARIABLE_H #define CONDITION_VARIABLE_H #include // An object one or multiple threads can wait on a be notified by some other. // Normally, you want to use a semaphore for such scenarios, but when the // condition is something different than a count being greater than zero // (which is the built-in logic in a semaphore) or you want to provide your // own mutex to tie the wait-notify to some other behavior, you need to use this. class ConditionVariable { mutable std::condition_variable condition; public: template _ALWAYS_INLINE_ void wait(const MutexLock &p_lock) const { condition.wait(const_cast &>(p_lock.lock)); } _ALWAYS_INLINE_ void notify_one() const { condition.notify_one(); } _ALWAYS_INLINE_ void notify_all() const { condition.notify_all(); } }; #endif // CONDITION_VARIABLE_H