Kernel: Corrections to Scheduling.
This commit is contained in:
parent
b4dc01f16a
commit
07993ac8c8
|
@ -154,7 +154,7 @@ void CoreTiming::RemoveEvent(const std::shared_ptr<EventType>& event_type) {
|
|||
basic_lock.unlock();
|
||||
}
|
||||
|
||||
std::optional<u64> CoreTiming::Advance() {
|
||||
std::optional<s64> CoreTiming::Advance() {
|
||||
advance_lock.lock();
|
||||
basic_lock.lock();
|
||||
global_timer = GetGlobalTimeNs().count();
|
||||
|
@ -170,10 +170,11 @@ std::optional<u64> CoreTiming::Advance() {
|
|||
}
|
||||
|
||||
basic_lock.lock();
|
||||
global_timer = GetGlobalTimeNs().count();
|
||||
}
|
||||
|
||||
if (!event_queue.empty()) {
|
||||
const u64 next_time = event_queue.front().time - global_timer;
|
||||
const s64 next_time = event_queue.front().time - global_timer;
|
||||
basic_lock.unlock();
|
||||
advance_lock.unlock();
|
||||
return next_time;
|
||||
|
@ -191,8 +192,10 @@ void CoreTiming::ThreadLoop() {
|
|||
paused_set = false;
|
||||
const auto next_time = Advance();
|
||||
if (next_time) {
|
||||
if (*next_time > 0) {
|
||||
std::chrono::nanoseconds next_time_ns = std::chrono::nanoseconds(*next_time);
|
||||
event.WaitFor(next_time_ns);
|
||||
}
|
||||
} else {
|
||||
wait_set = true;
|
||||
event.Wait();
|
||||
|
|
|
@ -110,7 +110,7 @@ public:
|
|||
std::chrono::nanoseconds GetGlobalTimeNs() const;
|
||||
|
||||
/// Checks for events manually and returns time in nanoseconds for next event, threadsafe.
|
||||
std::optional<u64> Advance();
|
||||
std::optional<s64> Advance();
|
||||
|
||||
private:
|
||||
struct Event;
|
||||
|
|
|
@ -47,13 +47,13 @@ u32 GlobalScheduler::SelectThreads() {
|
|||
ASSERT(is_locked);
|
||||
const auto update_thread = [](Thread* thread, Scheduler& sched) {
|
||||
sched.guard.lock();
|
||||
if (thread != sched.selected_thread.get()) {
|
||||
if (thread != sched.selected_thread_set.get()) {
|
||||
if (thread == nullptr) {
|
||||
++sched.idle_selection_count;
|
||||
}
|
||||
sched.selected_thread = SharedFrom(thread);
|
||||
sched.selected_thread_set = SharedFrom(thread);
|
||||
}
|
||||
const bool reschedule_pending = sched.selected_thread != sched.current_thread;
|
||||
const bool reschedule_pending = sched.selected_thread_set != sched.current_thread;
|
||||
sched.is_context_switch_pending = reschedule_pending;
|
||||
std::atomic_thread_fence(std::memory_order_seq_cst);
|
||||
sched.guard.unlock();
|
||||
|
@ -118,6 +118,8 @@ u32 GlobalScheduler::SelectThreads() {
|
|||
suggested);
|
||||
top_threads[candidate_core] = next;
|
||||
break;
|
||||
} else {
|
||||
suggested = nullptr;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
@ -590,7 +592,7 @@ void Scheduler::OnThreadStart() {
|
|||
}
|
||||
|
||||
void Scheduler::SwitchContextStep2() {
|
||||
Thread* previous_thread = current_thread.get();
|
||||
Thread* previous_thread = current_thread_prev.get();
|
||||
Thread* new_thread = selected_thread.get();
|
||||
|
||||
// Load context of new thread
|
||||
|
@ -606,8 +608,6 @@ void Scheduler::SwitchContextStep2() {
|
|||
"Thread must be ready to become running.");
|
||||
|
||||
// Cancel any outstanding wakeup events for this thread
|
||||
current_thread = SharedFrom(new_thread);
|
||||
new_thread->SetStatus(ThreadStatus::Running);
|
||||
new_thread->SetIsRunning(true);
|
||||
|
||||
auto* const thread_owner_process = current_thread->GetOwnerProcess();
|
||||
|
@ -622,21 +622,21 @@ void Scheduler::SwitchContextStep2() {
|
|||
cpu_core.SetTPIDR_EL0(new_thread->GetTPIDR_EL0());
|
||||
cpu_core.ClearExclusiveState();
|
||||
}
|
||||
} else {
|
||||
current_thread = nullptr;
|
||||
// Note: We do not reset the current process and current page table when idling because
|
||||
// technically we haven't changed processes, our threads are just paused.
|
||||
}
|
||||
guard.unlock();
|
||||
|
||||
TryDoContextSwitch();
|
||||
}
|
||||
|
||||
void Scheduler::SwitchContext() {
|
||||
Thread* previous_thread = current_thread.get();
|
||||
current_thread_prev = current_thread;
|
||||
selected_thread = selected_thread_set;
|
||||
Thread* previous_thread = current_thread_prev.get();
|
||||
Thread* new_thread = selected_thread.get();
|
||||
current_thread = selected_thread;
|
||||
|
||||
is_context_switch_pending = false;
|
||||
if (new_thread == previous_thread) {
|
||||
guard.unlock();
|
||||
if (new_thread == previous_thread) {
|
||||
return;
|
||||
}
|
||||
|
||||
|
|
|
@ -249,6 +249,8 @@ private:
|
|||
|
||||
std::shared_ptr<Thread> current_thread = nullptr;
|
||||
std::shared_ptr<Thread> selected_thread = nullptr;
|
||||
std::shared_ptr<Thread> current_thread_prev = nullptr;
|
||||
std::shared_ptr<Thread> selected_thread_set = nullptr;
|
||||
std::shared_ptr<Thread> idle_thread = nullptr;
|
||||
|
||||
Core::System& system;
|
||||
|
|
|
@ -316,7 +316,6 @@ static ResultCode ConnectToNamedPort32(Core::System& system, Handle* out_handle,
|
|||
|
||||
/// Makes a blocking IPC call to an OS service.
|
||||
static ResultCode SendSyncRequest(Core::System& system, Handle handle) {
|
||||
std::lock_guard lock{HLE::g_hle_lock};
|
||||
const auto& handle_table = system.Kernel().CurrentProcess()->GetHandleTable();
|
||||
std::shared_ptr<ClientSession> session = handle_table.Get<ClientSession>(handle);
|
||||
if (!session) {
|
||||
|
|
Loading…
Reference in New Issue