mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-11-18 08:11:21 +00:00
93 lines
3.1 KiB
C++
93 lines
3.1 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 <mesosphere.hpp>
|
|
|
|
namespace ams::kern {
|
|
|
|
void KWaitObject::OnTimer() {
|
|
MESOSPHERE_ASSERT(KScheduler::IsSchedulerLockedByCurrentThread());
|
|
|
|
/* Wake up all the waiting threads. */
|
|
for (KThread &thread : m_wait_list) {
|
|
thread.Wakeup();
|
|
}
|
|
}
|
|
|
|
Result KWaitObject::Synchronize(s64 timeout) {
|
|
/* Perform the wait. */
|
|
KHardwareTimer *timer = nullptr;
|
|
KThread *cur_thread = GetCurrentThreadPointer();
|
|
{
|
|
KScopedSchedulerLock sl;
|
|
|
|
/* Check that the thread isn't terminating. */
|
|
R_UNLESS(!cur_thread->IsTerminationRequested(), svc::ResultTerminationRequested());
|
|
|
|
/* Verify that nothing else is already waiting on the object. */
|
|
if (timeout > 0) {
|
|
R_UNLESS(!m_timer_used, svc::ResultBusy());
|
|
}
|
|
|
|
/* Check that we're not already in use. */
|
|
if (timeout >= 0) {
|
|
/* Verify the timer isn't already in use. */
|
|
R_UNLESS(!m_timer_used, svc::ResultBusy());
|
|
}
|
|
|
|
/* If we need to, register our timeout. */
|
|
if (timeout > 0) {
|
|
/* Mark that we're using the timer. */
|
|
m_timer_used = true;
|
|
|
|
/* Use the timer. */
|
|
timer = std::addressof(Kernel::GetHardwareTimer());
|
|
timer->RegisterAbsoluteTask(this, timeout);
|
|
}
|
|
|
|
if (timeout == 0) {
|
|
/* If we're timed out immediately, just wake up the thread. */
|
|
this->OnTimer();
|
|
} else {
|
|
/* Otherwise, sleep until the timeout occurs. */
|
|
m_wait_list.push_back(GetCurrentThread());
|
|
cur_thread->SetState(KThread::ThreadState_Waiting);
|
|
cur_thread->SetSyncedObject(nullptr, svc::ResultTimedOut());
|
|
}
|
|
}
|
|
|
|
/* Cleanup as necessary. */
|
|
{
|
|
KScopedSchedulerLock sl;
|
|
|
|
/* Remove from the timer. */
|
|
if (timeout > 0) {
|
|
MESOSPHERE_ASSERT(m_timer_used);
|
|
MESOSPHERE_ASSERT(timer != nullptr);
|
|
timer->CancelTask(this);
|
|
m_timer_used = false;
|
|
}
|
|
|
|
/* Remove the thread from our queue. */
|
|
if (timeout != 0) {
|
|
m_wait_list.erase(m_wait_list.iterator_to(GetCurrentThread()));
|
|
}
|
|
}
|
|
|
|
return ResultSuccess();
|
|
}
|
|
|
|
}
|