/* * Copyright (c) 2018-2020 Atmosphère-NX * * This program is free software; you can redistribute it and/or modify it * under the terms and conditions of the GNU General Public License, * version 2, as published by the Free Software Foundation. * * This program is distributed in the hope it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for * more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see . */ #pragma once #include #include namespace ams::fssystem { class ScopedThreadPriorityChanger { public: enum class Mode { Absolute, Relative, }; private: os::ThreadType *thread; s32 priority; public: ALWAYS_INLINE explicit ScopedThreadPriorityChanger(s32 prio, Mode mode) : thread(os::GetCurrentThread()), priority(0) { const auto result_priority = std::min((mode == Mode::Relative) ? os::GetThreadPriority(this->thread) + priority : priority, os::LowestSystemThreadPriority); this->priority = os::ChangeThreadPriority(thread, result_priority); } ALWAYS_INLINE ~ScopedThreadPriorityChanger() { os::ChangeThreadPriority(this->thread, this->priority); } }; class ScopedThreadPriorityChangerByAccessPriority { public: enum class AccessMode { Read, Write, }; private: static s32 GetThreadPriorityByAccessPriority(AccessMode mode); private: ScopedThreadPriorityChanger scoped_changer; public: ALWAYS_INLINE explicit ScopedThreadPriorityChangerByAccessPriority(AccessMode mode) : scoped_changer(GetThreadPriorityByAccessPriority(mode), ScopedThreadPriorityChanger::Mode::Absolute) { /* ... */ } }; }