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thread: Convert ThreadStatus into an enum class

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Makes the thread status strongly typed, so implicit conversions can't
happen. It also makes it easier to catch mistakes at compile time.
This commit is contained in:
Lioncash
2018-07-19 21:39:05 -04:00
committed by fearlessTobi
parent 2ba62ec196
commit 5dfa7b74b5
9 changed files with 89 additions and 90 deletions
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54
src/core/hle/kernel/thread.cpp
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@ -30,7 +30,7 @@ namespace Kernel {
static CoreTiming::EventType* ThreadWakeupEventType = nullptr;
bool Thread::ShouldWait(Thread* thread) const {
return status != THREADSTATUS_DEAD;
return status != ThreadStatus::Dead;
}
void Thread::Acquire(Thread* thread) {
@ -75,11 +75,11 @@ void Thread::Stop() {
// Clean up thread from ready queue
// This is only needed when the thread is termintated forcefully (SVC TerminateProcess)
if (status == THREADSTATUS_READY) {
if (status == ThreadStatus::Ready) {
ready_queue.remove(current_priority, this);
}
status = THREADSTATUS_DEAD;
status = ThreadStatus::Dead;
WakeupAllWaitingThreads();
@ -111,17 +111,17 @@ static void SwitchContext(Thread* new_thread) {
previous_thread->last_running_ticks = CoreTiming::GetTicks();
Core::CPU().SaveContext(previous_thread->context);
if (previous_thread->status == THREADSTATUS_RUNNING) {
if (previous_thread->status == ThreadStatus::Running) {
// This is only the case when a reschedule is triggered without the current thread
// yielding execution (i.e. an event triggered, system core time-sliced, etc)
ready_queue.push_front(previous_thread->current_priority, previous_thread);
previous_thread->status = THREADSTATUS_READY;
previous_thread->status = ThreadStatus::Ready;
}
}
// Load context of new thread
if (new_thread) {
ASSERT_MSG(new_thread->status == THREADSTATUS_READY,
ASSERT_MSG(new_thread->status == ThreadStatus::Ready,
"Thread must be ready to become running.");
// Cancel any outstanding wakeup events for this thread
@ -132,7 +132,7 @@ static void SwitchContext(Thread* new_thread) {
current_thread = new_thread;
ready_queue.remove(new_thread->current_priority, new_thread);
new_thread->status = THREADSTATUS_RUNNING;
new_thread->status = ThreadStatus::Running;
if (previous_process != current_thread->owner_process) {
Kernel::g_current_process = current_thread->owner_process;
@ -156,7 +156,7 @@ static Thread* PopNextReadyThread() {
Thread* next;
Thread* thread = GetCurrentThread();
if (thread && thread->status == THREADSTATUS_RUNNING) {
if (thread && thread->status == ThreadStatus::Running) {
// We have to do better than the current thread.
// This call returns null when that's not possible.
next = ready_queue.pop_first_better(thread->current_priority);
@ -173,7 +173,7 @@ static Thread* PopNextReadyThread() {
void WaitCurrentThread_Sleep() {
Thread* thread = GetCurrentThread();
thread->status = THREADSTATUS_WAIT_SLEEP;
thread->status = ThreadStatus::WaitSleep;
}
void ExitCurrentThread() {
@ -195,9 +195,9 @@ static void ThreadWakeupCallback(u64 thread_handle, s64 cycles_late) {
return;
}
if (thread->status == THREADSTATUS_WAIT_SYNCH_ANY ||
thread->status == THREADSTATUS_WAIT_SYNCH_ALL || thread->status == THREADSTATUS_WAIT_ARB ||
thread->status == THREADSTATUS_WAIT_HLE_EVENT) {
if (thread->status == ThreadStatus::WaitSynchAny ||
thread->status == ThreadStatus::WaitSynchAll || thread->status == ThreadStatus::WaitArb ||
thread->status == ThreadStatus::WaitHleEvent) {
// Invoke the wakeup callback before clearing the wait objects
if (thread->wakeup_callback)
@ -224,27 +224,27 @@ void Thread::ResumeFromWait() {
ASSERT_MSG(wait_objects.empty(), "Thread is waking up while waiting for objects");
switch (status) {
case THREADSTATUS_WAIT_SYNCH_ALL:
case THREADSTATUS_WAIT_SYNCH_ANY:
case THREADSTATUS_WAIT_HLE_EVENT:
case THREADSTATUS_WAIT_ARB:
case THREADSTATUS_WAIT_SLEEP:
case THREADSTATUS_WAIT_IPC:
case ThreadStatus::WaitSynchAll:
case ThreadStatus::WaitSynchAny:
case ThreadStatus::WaitHleEvent:
case ThreadStatus::WaitArb:
case ThreadStatus::WaitSleep:
case ThreadStatus::WaitIPC:
break;
case THREADSTATUS_READY:
case ThreadStatus::Ready:
// The thread's wakeup callback must have already been cleared when the thread was first
// awoken.
ASSERT(wakeup_callback == nullptr);
// 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.
// already been set to ThreadStatus::Ready.
return;
case THREADSTATUS_RUNNING:
case ThreadStatus::Running:
DEBUG_ASSERT_MSG(false, "Thread with object id {} has already resumed.", GetObjectId());
return;
case THREADSTATUS_DEAD:
case ThreadStatus::Dead:
// 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());
@ -254,7 +254,7 @@ void Thread::ResumeFromWait() {
wakeup_callback = nullptr;
ready_queue.push_back(current_priority, this);
status = THREADSTATUS_READY;
status = ThreadStatus::Ready;
Core::System::GetInstance().PrepareReschedule();
}
@ -349,7 +349,7 @@ ResultVal<SharedPtr<Thread>> Thread::Create(std::string name, VAddr entry_point,
ready_queue.prepare(priority);
thread->thread_id = NewThreadId();
thread->status = THREADSTATUS_DORMANT;
thread->status = ThreadStatus::Dormant;
thread->entry_point = entry_point;
thread->stack_top = stack_top;
thread->nominal_priority = thread->current_priority = priority;
@ -408,7 +408,7 @@ ResultVal<SharedPtr<Thread>> Thread::Create(std::string name, VAddr entry_point,
ResetThreadContext(thread->context, stack_top, entry_point, arg);
ready_queue.push_back(thread->current_priority, thread.get());
thread->status = THREADSTATUS_READY;
thread->status = ThreadStatus::Ready;
return MakeResult<SharedPtr<Thread>>(std::move(thread));
}
@ -417,7 +417,7 @@ void Thread::SetPriority(u32 priority) {
ASSERT_MSG(priority <= THREADPRIO_LOWEST && priority >= THREADPRIO_HIGHEST,
"Invalid priority value.");
// If thread was ready, adjust queues
if (status == THREADSTATUS_READY)
if (status == ThreadStatus::Ready)
ready_queue.move(this, current_priority, priority);
else
ready_queue.prepare(priority);
@ -436,7 +436,7 @@ void Thread::UpdatePriority() {
void Thread::BoostPriority(u32 priority) {
// If thread was ready, adjust queues
if (status == THREADSTATUS_READY)
if (status == ThreadStatus::Ready)
ready_queue.move(this, current_priority, priority);
else
ready_queue.prepare(priority);