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ams: deduplicate static initialization logic

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This commit is contained in:
Michael Scire
2021-12-13 13:07:03 -08:00
parent 78f7218c4f
commit 30fac905af
24 changed files with 202 additions and 262 deletions
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2
libraries/libvapours/include/vapours/util.hpp
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@@ -55,6 +55,8 @@
#include <vapours/util/util_atomic.hpp>
#include <vapours/util/util_function_local_static.hpp>
#ifdef ATMOSPHERE_IS_STRATOSPHERE
#include <vapours/util/util_mutex_utils.hpp>
#endif

51
libraries/libvapours/include/vapours/util/util_function_local_static.hpp Normal file
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@@ -0,0 +1,51 @@
/*
* 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/>.
*/
#pragma once
#include <vapours/common.hpp>
#include <vapours/assert.hpp>
#include <vapours/util/util_typed_storage.hpp>
namespace ams::util {
#define AMS_FUNCTION_LOCAL_STATIC_CONSTINIT(_TYPE_, _NAME_, ...) static constinit _TYPE_ _NAME_ { __VA_ARGS__ }
/* NOTE: This must use placement new, to support private constructors. */
#define AMS_FUNCTION_LOCAL_STATIC_IMPL(_LOCKTYPE_, _SCOPELOCKTYPE_, _TYPE_, _NAME_, ...) \
static constinit ::ams::util::TypedStorage<_TYPE_> s_fls_storage_for_##_NAME_ {}; \
static constinit bool s_fls_initialized_##_NAME_ = false; \
static constinit _LOCKTYPE_ s_fls_init_lock_##_NAME_ {}; \
if (AMS_UNLIKELY(!(s_fls_initialized_##_NAME_))) { \
_SCOPELOCKTYPE_ sl_fls_for_##_NAME_ { s_fls_init_lock_##_NAME_ }; \
if (AMS_LIKELY(!(s_fls_initialized_##_NAME_))) { \
new (::ams::util::impl::GetPointerForConstructAt(s_fls_storage_for_##_NAME_)) _TYPE_( __VA_ARGS__ ); \
s_fls_initialized_##_NAME_ = true; \
} \
} \
\
_TYPE_ & _NAME_ = util::GetReference(s_fls_storage_for_##_NAME_)
#if defined(ATMOSPHERE_IS_MESOSPHERE)
#define AMS_FUNCTION_LOCAL_STATIC(_TYPE_, _NAME_, ...) AMS_FUNCTION_LOCAL_STATIC_IMPL(KSpinLock, KScopedSpinLock, _TYPE_, _NAME_, ##__VA_ARGS__)
#elif defined(ATMOSPHERE_IS_STRATOSPHERE)
#define AMS_FUNCTION_LOCAL_STATIC(_TYPE_, _NAME_, ...) AMS_FUNCTION_LOCAL_STATIC_IMPL(os::SdkMutex, std::scoped_lock, _TYPE_, _NAME_, ##__VA_ARGS__)
#endif
}

11
libraries/libvapours/include/vapours/util/util_typed_storage.hpp
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@@ -45,9 +45,18 @@ namespace ams::util {
return *GetPointer(ts);
}
namespace impl {
template<typename T>
static ALWAYS_INLINE T *GetPointerForConstructAt(TypedStorage<T> &ts) {
return reinterpret_cast<T *>(std::addressof(ts._storage));
}
}
template<typename T, typename... Args>
static ALWAYS_INLINE T *ConstructAt(TypedStorage<T> &ts, Args &&... args) {
return std::construct_at(reinterpret_cast<T *>(std::addressof(ts._storage)), std::forward<Args>(args)...);
return std::construct_at(impl::GetPointerForConstructAt(ts), std::forward<Args>(args)...);
}
template<typename T>