mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
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3a1ccdd919
* ams: update to build with gcc10/c++20 * remove mno-outline-atomics * ams: take care of most TODO C++20s * fusee/sept: update for gcc10 * whoosh, your code now uses pre-compiled headers * make: dependency fixes
91 lines
3 KiB
C++
91 lines
3 KiB
C++
/*
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* Copyright (c) 2018-2020 Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <mesosphere/kern_select_cpu.hpp>
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namespace ams::kern {
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class KThread;
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class KProcess;
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class KScheduler;
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class KInterruptTaskManager;
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struct KCurrentContext {
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std::atomic<KThread *> current_thread;
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std::atomic<KProcess *> current_process;
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KScheduler *scheduler;
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KInterruptTaskManager *interrupt_task_manager;
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s32 core_id;
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void *exception_stack_top;
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};
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static_assert(std::is_standard_layout<KCurrentContext>::value && std::is_trivially_destructible<KCurrentContext>::value);
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static_assert(sizeof(KCurrentContext) <= cpu::DataCacheLineSize);
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static_assert(sizeof(std::atomic<KThread *>) == sizeof(KThread *));
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static_assert(sizeof(std::atomic<KProcess *>) == sizeof(KProcess *));
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namespace impl {
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ALWAYS_INLINE KCurrentContext &GetCurrentContext() {
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return *reinterpret_cast<KCurrentContext *>(cpu::GetCoreLocalRegionAddress());
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}
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}
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ALWAYS_INLINE KThread *GetCurrentThreadPointer() {
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return impl::GetCurrentContext().current_thread.load(std::memory_order_relaxed);
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}
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ALWAYS_INLINE KThread &GetCurrentThread() {
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return *GetCurrentThreadPointer();
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}
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ALWAYS_INLINE KProcess *GetCurrentProcessPointer() {
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return impl::GetCurrentContext().current_process.load(std::memory_order_relaxed);
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}
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ALWAYS_INLINE KProcess &GetCurrentProcess() {
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return *GetCurrentProcessPointer();
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}
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ALWAYS_INLINE KScheduler *GetCurrentSchedulerPointer() {
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return impl::GetCurrentContext().scheduler;
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}
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ALWAYS_INLINE KScheduler &GetCurrentScheduler() {
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return *GetCurrentSchedulerPointer();
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}
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ALWAYS_INLINE KInterruptTaskManager *GetCurrentInterruptTaskManagerPointer() {
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return impl::GetCurrentContext().interrupt_task_manager;
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}
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ALWAYS_INLINE KInterruptTaskManager &GetCurrentInterruptTaskManager() {
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return *GetCurrentInterruptTaskManagerPointer();
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}
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ALWAYS_INLINE s32 GetCurrentCoreId() {
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return impl::GetCurrentContext().core_id;
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}
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ALWAYS_INLINE void SetCurrentThread(KThread *new_thread) {
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impl::GetCurrentContext().current_thread = new_thread;
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}
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ALWAYS_INLINE void SetCurrentProcess(KProcess *new_process) {
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impl::GetCurrentContext().current_process = new_process;
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}
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}
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