mirror of
https://github.com/Atmosphere-NX/Atmosphere
synced 2024-11-10 07:06:34 +00:00
86 lines
2.7 KiB
C++
86 lines
2.7 KiB
C++
|
/*
|
||
|
|
* Copyright (c) 2018-2020 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_thread_manager.hpp"
|
||
|
|
|
||
|
|
#if defined(ATMOSPHERE_OS_HORIZON)
|
||
|
|
#include "impl/os_internal_busy_mutex_impl.os.horizon.hpp"
|
||
|
|
#else
|
||
|
|
#error "Unknown OS for ams::os::impl::InternalBusyMutexImpl"
|
||
|
|
#endif
|
||
|
|
|
||
|
|
namespace ams::os {
|
||
|
|
|
||
|
|
void InitializeBusyMutex(BusyMutexType *mutex) {
|
||
|
|
/* Create object. */
|
||
|
|
util::ConstructAt(mutex->_storage);
|
||
|
|
|
||
|
|
/* Set member variables. */
|
||
|
|
mutex->owner_thread = nullptr;
|
||
|
|
|
||
|
|
/* Mark initialized. */
|
||
|
|
mutex->state = BusyMutexType::State_Initialized;
|
||
|
|
}
|
||
|
|
|
||
|
|
void FinalizeBusyMutex(BusyMutexType *mutex) {
|
||
|
|
/* Check pre-conditions. */
|
||
|
|
AMS_ASSERT(mutex->state == BusyMutexType::State_Initialized);
|
||
|
|
AMS_ASSERT(!util::GetReference(mutex->_storage).IsLocked());
|
||
|
|
|
||
|
|
/* Mark not intialized. */
|
||
|
|
mutex->state = MutexType::State_NotInitialized;
|
||
|
|
|
||
|
|
/* Destroy object. */
|
||
|
|
util::DestroyAt(mutex->_storage);
|
||
|
|
}
|
||
|
|
|
||
|
|
void LockBusyMutex(BusyMutexType *mutex) {
|
||
|
|
/* Check pre-conditions. */
|
||
|
|
AMS_ASSERT(mutex->state == BusyMutexType::State_Initialized);
|
||
|
|
|
||
|
|
/* Lock mutex. */
|
||
|
|
util::GetReference(mutex->_storage).Lock();
|
||
|
|
|
||
|
|
/* Set owner thread. */
|
||
|
|
mutex->owner_thread = impl::GetCurrentThread();
|
||
|
|
}
|
||
|
|
|
||
|
|
bool TryLockBusyMutex(BusyMutexType *mutex) {
|
||
|
|
/* Check pre-conditions. */
|
||
|
|
AMS_ASSERT(mutex->state == BusyMutexType::State_Initialized);
|
||
|
|
|
||
|
|
/* Try to lock mutex. */
|
||
|
|
const bool locked = util::GetReference(mutex->_storage).TryLock();
|
||
|
|
|
||
|
|
/* Set owner thread. */
|
||
|
|
if (locked) {
|
||
|
|
mutex->owner_thread = impl::GetCurrentThread();
|
||
|
|
}
|
||
|
|
|
||
|
|
return locked;
|
||
|
|
}
|
||
|
|
|
||
|
|
void UnlockBusyMutex(BusyMutexType *mutex) {
|
||
|
|
/* Check pre-conditions. */
|
||
|
|
AMS_ASSERT(mutex->state == BusyMutexType::State_Initialized);
|
||
|
|
AMS_ASSERT(util::GetReference(mutex->_storage).IsLocked() && mutex->owner_thread == impl::GetCurrentThread());
|
||
|
|
|
||
|
|
/* Unlock. */
|
||
|
|
util::GetReference(mutex->_storage).Unlock();
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|