mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-11-30 07:42:13 +00:00
84 lines
3 KiB
C++
84 lines
3 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 <mesosphere.hpp>
|
|
|
|
namespace ams::kern {
|
|
|
|
namespace {
|
|
|
|
class ThreadQueueImplForKLightConditionVariable final : public KThreadQueue {
|
|
private:
|
|
KThread::WaiterList *m_wait_list;
|
|
bool m_allow_terminating_thread;
|
|
public:
|
|
constexpr ThreadQueueImplForKLightConditionVariable(KThread::WaiterList *wl, bool term) : KThreadQueue(), m_wait_list(wl), m_allow_terminating_thread(term) { /* ... */ }
|
|
|
|
virtual void CancelWait(KThread *waiting_thread, Result wait_result, bool cancel_timer_task) override {
|
|
/* Only process waits if we're allowed to. */
|
|
if (svc::ResultTerminationRequested::Includes(wait_result) && m_allow_terminating_thread) {
|
|
return;
|
|
}
|
|
|
|
/* Remove the thread from the waiting thread from the light condition variable. */
|
|
m_wait_list->erase(m_wait_list->iterator_to(*waiting_thread));
|
|
|
|
/* Invoke the base cancel wait handler. */
|
|
KThreadQueue::CancelWait(waiting_thread, wait_result, cancel_timer_task);
|
|
}
|
|
};
|
|
|
|
}
|
|
|
|
void KLightConditionVariable::Wait(KLightLock *lock, s64 timeout, bool allow_terminating_thread) {
|
|
/* Create thread queue. */
|
|
KThread *owner = GetCurrentThreadPointer();
|
|
KHardwareTimer *timer;
|
|
|
|
ThreadQueueImplForKLightConditionVariable wait_queue(std::addressof(m_wait_list), allow_terminating_thread);
|
|
|
|
/* Sleep the thread. */
|
|
{
|
|
KScopedSchedulerLockAndSleep lk(std::addressof(timer), owner, timeout);
|
|
|
|
if (!allow_terminating_thread && owner->IsTerminationRequested()) {
|
|
lk.CancelSleep();
|
|
return;
|
|
}
|
|
|
|
lock->Unlock();
|
|
|
|
/* Add the thread to the queue. */
|
|
m_wait_list.push_back(*owner);
|
|
|
|
/* Begin waiting. */
|
|
wait_queue.SetHardwareTimer(timer);
|
|
owner->BeginWait(std::addressof(wait_queue));
|
|
}
|
|
|
|
/* Re-acquire the lock. */
|
|
lock->Lock();
|
|
}
|
|
|
|
void KLightConditionVariable::Broadcast() {
|
|
KScopedSchedulerLock lk;
|
|
|
|
/* Signal all threads. */
|
|
for (auto it = m_wait_list.begin(); it != m_wait_list.end(); it = m_wait_list.erase(it)) {
|
|
it->EndWait(ResultSuccess());
|
|
}
|
|
}
|
|
|
|
}
|