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hle: kernel: thread: Replace ThreadStatus/ThreadSchedStatus with a single ThreadState.

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- This is how the real kernel works, and is more accurate and simpler.
This commit is contained in:
bunnei 2020-12-28 13:16:43 -08:00
parent 7420a717e6
commit c3c43e32fc
12 changed files with 111 additions and 172 deletions
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81
src/core/hle/kernel/thread.cpp
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@ -44,7 +44,7 @@ Thread::~Thread() = default;
void Thread::Stop() {
{
KScopedSchedulerLock lock(kernel);
SetState(ThreadStatus::Dead);
SetState(ThreadState::Terminated);
signaled = true;
NotifyAvailable();
kernel.GlobalHandleTable().Close(global_handle);
@ -62,54 +62,43 @@ void Thread::Stop() {
void Thread::Wakeup() {
KScopedSchedulerLock lock(kernel);
switch (status) {
case ThreadStatus::Paused:
case ThreadStatus::WaitSynch:
case ThreadStatus::WaitHLEEvent:
case ThreadStatus::WaitSleep:
case ThreadStatus::WaitIPC:
case ThreadStatus::WaitMutex:
case ThreadStatus::WaitCondVar:
case ThreadStatus::WaitArb:
case ThreadStatus::Dormant:
break;
case ThreadStatus::Ready:
switch (thread_state) {
case ThreadState::Runnable:
// If the thread is waiting on multiple wait objects, it might be awoken more than once
// before actually resuming. We can ignore subsequent wakeups if the thread status has
// already been set to ThreadStatus::Ready.
return;
case ThreadStatus::Dead:
case ThreadState::Terminated:
// This should never happen, as threads must complete before being stopped.
DEBUG_ASSERT_MSG(false, "Thread with object id {} cannot be resumed because it's DEAD.",
GetObjectId());
return;
}
SetState(ThreadStatus::Ready);
SetState(ThreadState::Runnable);
}
void Thread::OnWakeUp() {
KScopedSchedulerLock lock(kernel);
SetState(ThreadStatus::Ready);
SetState(ThreadState::Runnable);
}
ResultCode Thread::Start() {
KScopedSchedulerLock lock(kernel);
SetState(ThreadStatus::Ready);
SetState(ThreadState::Runnable);
return RESULT_SUCCESS;
}
void Thread::CancelWait() {
KScopedSchedulerLock lock(kernel);
if (GetState() != ThreadSchedStatus::Paused || !is_cancellable) {
if (GetState() != ThreadState::Waiting || !is_cancellable) {
is_sync_cancelled = true;
return;
}
// TODO(Blinkhawk): Implement cancel of server session
is_sync_cancelled = false;
SetSynchronizationResults(nullptr, ERR_SYNCHRONIZATION_CANCELED);
SetState(ThreadStatus::Ready);
SetState(ThreadState::Runnable);
}
static void ResetThreadContext32(Core::ARM_Interface::ThreadContext32& context, u32 stack_top,
@ -173,7 +162,7 @@ ResultVal<std::shared_ptr<Thread>> Thread::Create(Core::System& system, ThreadTy
std::shared_ptr<Thread> thread = std::make_shared<Thread>(kernel);
thread->thread_id = kernel.CreateNewThreadID();
thread->status = ThreadStatus::Dormant;
thread->thread_state = ThreadState::Initialized;
thread->entry_point = entry_point;
thread->stack_top = stack_top;
thread->disable_count = 1;
@ -235,27 +224,18 @@ VAddr Thread::GetCommandBufferAddress() const {
return GetTLSAddress() + command_header_offset;
}
void Thread::SetState(ThreadStatus new_status) {
if (new_status == status) {
void Thread::SetState(ThreadState new_status) {
if (new_status == thread_state) {
return;
}
switch (new_status) {
case ThreadStatus::Ready:
SetSchedulingStatus(ThreadSchedStatus::Runnable);
break;
case ThreadStatus::Dormant:
SetSchedulingStatus(ThreadSchedStatus::None);
break;
case ThreadStatus::Dead:
SetSchedulingStatus(ThreadSchedStatus::Exited);
break;
default:
SetSchedulingStatus(ThreadSchedStatus::Paused);
break;
if (new_status != ThreadState::Waiting) {
SetWaitingCondVar(false);
}
status = new_status;
SetSchedulingStatus(new_status);
thread_state = new_status;
}
void Thread::AddMutexWaiter(std::shared_ptr<Thread> thread) {
@ -312,13 +292,13 @@ void Thread::UpdatePriority() {
return;
}
if (GetStatus() == ThreadStatus::WaitCondVar) {
if (GetState() == ThreadState::Waiting && is_waiting_on_condvar) {
owner_process->RemoveConditionVariableThread(SharedFrom(this));
}
SetCurrentPriority(new_priority);
if (GetStatus() == ThreadStatus::WaitCondVar) {
if (GetState() == ThreadState::Waiting && is_waiting_on_condvar) {
owner_process->InsertConditionVariableThread(SharedFrom(this));
}
@ -340,7 +320,7 @@ ResultCode Thread::SetActivity(ThreadActivity value) {
auto sched_status = GetState();
if (sched_status != ThreadSchedStatus::Runnable && sched_status != ThreadSchedStatus::Paused) {
if (sched_status != ThreadState::Runnable && sched_status != ThreadState::Waiting) {
return ERR_INVALID_STATE;
}
@ -366,7 +346,7 @@ ResultCode Thread::Sleep(s64 nanoseconds) {
Handle event_handle{};
{
KScopedSchedulerLockAndSleep lock(kernel, event_handle, this, nanoseconds);
SetState(ThreadStatus::WaitSleep);
SetState(ThreadState::Waiting);
}
if (event_handle != InvalidHandle) {
@ -377,25 +357,24 @@ ResultCode Thread::Sleep(s64 nanoseconds) {
}
void Thread::AddSchedulingFlag(ThreadSchedFlags flag) {
const u32 old_state = scheduling_state;
const auto old_state = GetRawState();
pausing_state |= static_cast<u32>(flag);
const u32 base_scheduling = static_cast<u32>(GetState());
scheduling_state = base_scheduling | pausing_state;
const auto base_scheduling = GetState();
thread_state = base_scheduling | static_cast<ThreadState>(pausing_state);
KScheduler::OnThreadStateChanged(kernel, this, old_state);
}
void Thread::RemoveSchedulingFlag(ThreadSchedFlags flag) {
const u32 old_state = scheduling_state;
const auto old_state = GetRawState();
pausing_state &= ~static_cast<u32>(flag);
const u32 base_scheduling = static_cast<u32>(GetState());
scheduling_state = base_scheduling | pausing_state;
const auto base_scheduling = GetState();
thread_state = base_scheduling | static_cast<ThreadState>(pausing_state);
KScheduler::OnThreadStateChanged(kernel, this, old_state);
}
void Thread::SetSchedulingStatus(ThreadSchedStatus new_status) {
const u32 old_state = scheduling_state;
scheduling_state = (scheduling_state & static_cast<u32>(ThreadSchedMasks::HighMask)) |
static_cast<u32>(new_status);
void Thread::SetSchedulingStatus(ThreadState new_status) {
const auto old_state = GetRawState();
thread_state = (thread_state & ThreadState::HighMask) | new_status;
KScheduler::OnThreadStateChanged(kernel, this, old_state);
}