Atmosphere/libraries/libstratosphere/source/os/os_multiple_wait.cpp

153 lines
5.1 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>
#include "impl/os_multiple_wait_impl.hpp"
#include "impl/os_multiple_wait_holder_base.hpp"
#include "impl/os_multiple_wait_holder_impl.hpp"
namespace ams::os {
namespace {
ALWAYS_INLINE impl::MultiWaitImpl &GetMultiWaitImpl(MultiWaitType *multi_wait) {
return GetReference(multi_wait->impl_storage);
}
ALWAYS_INLINE MultiWaitHolderType *CastToMultiWaitHolder(impl::MultiWaitHolderBase *base) {
return reinterpret_cast<MultiWaitHolderType *>(base);
}
}
void InitializeMultiWait(MultiWaitType *multi_wait) {
/* Initialize storage. */
util::ConstructAt(multi_wait->impl_storage);
/* Mark initialized. */
multi_wait->state = MultiWaitType::State_Initialized;
}
void FinalizeMultiWait(MultiWaitType *multi_wait) {
auto &impl = GetMultiWaitImpl(multi_wait);
AMS_ASSERT(multi_wait->state == MultiWaitType::State_Initialized);
AMS_ASSERT(impl.IsEmpty());
AMS_UNUSED(impl);
/* Mark not initialized. */
multi_wait->state = MultiWaitType::State_NotInitialized;
/* Destroy. */
util::DestroyAt(multi_wait->impl_storage);
}
MultiWaitHolderType *WaitAny(MultiWaitType *multi_wait) {
auto &impl = GetMultiWaitImpl(multi_wait);
AMS_ASSERT(multi_wait->state == MultiWaitType::State_Initialized);
AMS_ASSERT(!impl.IsEmpty());
auto *holder = CastToMultiWaitHolder(impl.WaitAny());
AMS_ASSERT(holder != nullptr);
return holder;
}
MultiWaitHolderType *TryWaitAny(MultiWaitType *multi_wait) {
auto &impl = GetMultiWaitImpl(multi_wait);
AMS_ASSERT(multi_wait->state == MultiWaitType::State_Initialized);
AMS_ASSERT(!impl.IsEmpty());
auto *holder = CastToMultiWaitHolder(impl.TryWaitAny());
return holder;
}
MultiWaitHolderType *TimedWaitAny(MultiWaitType *multi_wait, TimeSpan timeout) {
auto &impl = GetMultiWaitImpl(multi_wait);
AMS_ASSERT(multi_wait->state == MultiWaitType::State_Initialized);
AMS_ASSERT(!impl.IsEmpty());
AMS_ASSERT(timeout.GetNanoSeconds() >= 0);
auto *holder = CastToMultiWaitHolder(impl.TimedWaitAny(timeout));
return holder;
}
void FinalizeMultiWaitHolder(MultiWaitHolderType *holder) {
auto *holder_base = reinterpret_cast<impl::MultiWaitHolderBase *>(GetPointer(holder->impl_storage));
AMS_ASSERT(!holder_base->IsLinked());
std::destroy_at(holder_base);
}
void LinkMultiWaitHolder(MultiWaitType *multi_wait, MultiWaitHolderType *holder) {
auto &impl = GetMultiWaitImpl(multi_wait);
auto *holder_base = reinterpret_cast<impl::MultiWaitHolderBase *>(GetPointer(holder->impl_storage));
AMS_ASSERT(multi_wait->state == MultiWaitType::State_Initialized);
AMS_ASSERT(!holder_base->IsLinked());
impl.LinkMultiWaitHolder(*holder_base);
holder_base->SetMultiWait(std::addressof(impl));
}
void UnlinkMultiWaitHolder(MultiWaitHolderType *holder) {
auto *holder_base = reinterpret_cast<impl::MultiWaitHolderBase *>(GetPointer(holder->impl_storage));
/* Don't allow unlinking of an unlinked holder. */
AMS_ABORT_UNLESS(holder_base->IsLinked());
holder_base->GetMultiWait()->UnlinkMultiWaitHolder(*holder_base);
holder_base->SetMultiWait(nullptr);
}
void UnlinkAllMultiWaitHolder(MultiWaitType *multi_wait) {
auto &impl = GetMultiWaitImpl(multi_wait);
AMS_ASSERT(multi_wait->state == MultiWaitType::State_Initialized);
return impl.UnlinkAll();
}
void MoveAllMultiWaitHolder(MultiWaitType *_dst, MultiWaitType *_src) {
auto &dst = GetMultiWaitImpl(_dst);
auto &src = GetMultiWaitImpl(_src);
AMS_ASSERT(_dst->state == MultiWaitType::State_Initialized);
AMS_ASSERT(_src->state == MultiWaitType::State_Initialized);
return dst.MoveAllFrom(src);
}
void SetMultiWaitHolderUserData(MultiWaitHolderType *holder, uintptr_t user_data) {
holder->user_data = user_data;
}
uintptr_t GetMultiWaitHolderUserData(const MultiWaitHolderType *holder) {
return holder->user_data;
}
void InitializeMultiWaitHolder(MultiWaitHolderType *holder, NativeHandle handle) {
AMS_ASSERT(handle != os::InvalidNativeHandle);
util::ConstructAt(GetReference(holder->impl_storage).holder_of_handle_storage, handle);
holder->user_data = 0;
}
}