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kern: unify all waiting semantics to use single api

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This commit is contained in:
Michael Scire
2021-09-19 10:11:56 -07:00
parent 29940e1a82
commit df4ebae93a
22 changed files with 904 additions and 683 deletions
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54
libraries/libmesosphere/include/mesosphere/kern_k_light_condition_variable.hpp
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@@ -27,59 +27,9 @@ namespace ams::kern {
KThread::WaiterList m_wait_list;
public:
constexpr ALWAYS_INLINE KLightConditionVariable() : m_wait_list() { /* ... */ }
private:
void WaitImpl(KLightLock *lock, s64 timeout, bool allow_terminating_thread) {
KThread *owner = GetCurrentThreadPointer();
KHardwareTimer *timer;
/* Sleep the thread. */
{
KScopedSchedulerLockAndSleep lk(&timer, owner, timeout);
if (!allow_terminating_thread && owner->IsTerminationRequested()) {
lk.CancelSleep();
return;
}
lock->Unlock();
/* Set the thread as waiting. */
GetCurrentThread().SetState(KThread::ThreadState_Waiting);
/* Add the thread to the queue. */
m_wait_list.push_back(GetCurrentThread());
}
/* Remove the thread from the wait list. */
{
KScopedSchedulerLock sl;
m_wait_list.erase(m_wait_list.iterator_to(GetCurrentThread()));
}
/* Cancel the task that the sleep setup. */
if (timer != nullptr) {
timer->CancelTask(owner);
}
/* Re-acquire the lock. */
lock->Lock();
}
public:
void Wait(KLightLock *lock, s64 timeout = -1ll, bool allow_terminating_thread = true) {
this->WaitImpl(lock, timeout, allow_terminating_thread);
}
void Broadcast() {
KScopedSchedulerLock lk;
/* Signal all threads. */
for (auto &thread : m_wait_list) {
thread.SetState(KThread::ThreadState_Runnable);
}
}
void Wait(KLightLock *lock, s64 timeout = -1ll, bool allow_terminating_thread = true);
void Broadcast();
};
}