mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-12-15 09:11:24 +01:00
53 lines
1.8 KiB
C++
53 lines
1.8 KiB
C++
|
/*
|
||
|
|
* Copyright (c) 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 <http://www.gnu.org/licenses/>.
|
||
|
|
*/
|
||
|
|
#include <stratosphere.hpp>
|
||
|
|
|
||
|
|
namespace ams::settings::impl {
|
||
|
|
|
||
|
|
template<typename T, typename Tag>
|
||
|
|
class StaticObject final {
|
||
|
|
NON_COPYABLE(StaticObject);
|
||
|
|
NON_MOVEABLE(StaticObject);
|
||
|
|
private:
|
||
|
|
StaticObject();
|
||
|
|
public:
|
||
|
|
static T &Get() {
|
||
|
|
/* Declare static instance variables. */
|
||
|
|
static constinit util::TypedStorage<T> s_storage = {};
|
||
|
|
static constinit bool s_initialized = false;
|
||
|
|
static constinit os::SdkMutex s_mutex;
|
||
|
|
|
||
|
|
/* If we haven't already done so, construct the instance. */
|
||
|
|
if (AMS_UNLIKELY(!s_initialized)) {
|
||
|
|
std::scoped_lock lk(s_mutex);
|
||
|
|
|
||
|
|
/* Check that we didn't concurrently construct the instance. */
|
||
|
|
if (AMS_LIKELY(!s_initialized)) {
|
||
|
|
/* Construct the instance. */
|
||
|
|
util::ConstructAt(s_storage);
|
||
|
|
|
||
|
|
/* Note that we constructed. */
|
||
|
|
s_initialized = true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Return the constructed instance. */
|
||
|
|
return util::GetReference(s_storage);
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
}
|