mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-11-13 23:46:40 +00:00
84 lines
2.8 KiB
C++
84 lines
2.8 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/>.
|
|
*/
|
|
#pragma once
|
|
#include <mesosphere/kern_common.hpp>
|
|
#include <mesosphere/kern_k_thread.hpp>
|
|
|
|
namespace ams::kern {
|
|
|
|
class KThreadQueue {
|
|
private:
|
|
KThread::WaiterList m_wait_list;
|
|
public:
|
|
constexpr ALWAYS_INLINE KThreadQueue() : m_wait_list() { /* ... */ }
|
|
|
|
bool IsEmpty() const { return m_wait_list.empty(); }
|
|
|
|
KThread::WaiterList::iterator begin() { return m_wait_list.begin(); }
|
|
KThread::WaiterList::iterator end() { return m_wait_list.end(); }
|
|
|
|
bool SleepThread(KThread *t) {
|
|
KScopedSchedulerLock sl;
|
|
|
|
/* If the thread needs terminating, don't enqueue it. */
|
|
if (t->IsTerminationRequested()) {
|
|
return false;
|
|
}
|
|
|
|
/* Set the thread's queue and mark it as waiting. */
|
|
t->SetSleepingQueue(this);
|
|
t->SetState(KThread::ThreadState_Waiting);
|
|
|
|
/* Add the thread to the queue. */
|
|
m_wait_list.push_back(*t);
|
|
|
|
return true;
|
|
}
|
|
|
|
void WakeupThread(KThread *t) {
|
|
KScopedSchedulerLock sl;
|
|
|
|
/* Remove the thread from the queue. */
|
|
m_wait_list.erase(m_wait_list.iterator_to(*t));
|
|
|
|
/* Mark the thread as no longer sleeping. */
|
|
t->SetState(KThread::ThreadState_Runnable);
|
|
t->SetSleepingQueue(nullptr);
|
|
}
|
|
|
|
KThread *WakeupFrontThread() {
|
|
KScopedSchedulerLock sl;
|
|
|
|
if (m_wait_list.empty()) {
|
|
return nullptr;
|
|
} else {
|
|
/* Remove the thread from the queue. */
|
|
auto it = m_wait_list.begin();
|
|
KThread *thread = std::addressof(*it);
|
|
m_wait_list.erase(it);
|
|
|
|
MESOSPHERE_ASSERT(thread->GetState() == KThread::ThreadState_Waiting);
|
|
|
|
/* Mark the thread as no longer sleeping. */
|
|
thread->SetState(KThread::ThreadState_Runnable);
|
|
thread->SetSleepingQueue(nullptr);
|
|
|
|
return thread;
|
|
}
|
|
}
|
|
};
|
|
|
|
}
|