mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
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46 lines
2.9 KiB
C++
46 lines
2.9 KiB
C++
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/*
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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 <vapours.hpp>
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#include <stratosphere/os/os_sdk_mutex.hpp>
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#define AMS_SINGLETON_TRAITS(_CLASSNAME_) \
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private: \
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NON_COPYABLE(_CLASSNAME_); \
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NON_MOVEABLE(_CLASSNAME_); \
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private: \
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_CLASSNAME_ (); \
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public: \
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static _CLASSNAME_ &GetInstance() { \
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/* Declare singleton instance variables. */ \
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static constinit ::ams::util::TypedStorage<_CLASSNAME_> s_singleton_storage; \
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static constinit ::ams::os::SdkMutex s_singleton_mutex; \
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static constinit bool s_initialized_singleton = false; \
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\
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/* Ensure the instance is created. */ \
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if (AMS_UNLIKELY(!s_initialized_singleton)) { \
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std::scoped_lock lk(s_singleton_mutex); \
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\
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if (AMS_LIKELY(!s_initialized_singleton)) { \
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new (::ams::util::GetPointer(s_singleton_storage)) _CLASSNAME_; \
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s_initialized_singleton = true; \
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} \
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} \
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\
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return ::ams::util::GetReference(s_singleton_storage); \
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}
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