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3 changed files with 121 additions and 901 deletions
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@ -26,24 +26,6 @@ std::shared_ptr<EventType> CreateEvent(std::string name, TimedCallback&& callbac
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return std::make_shared<EventType>(std::move(callback), std::move(name));
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}
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struct CoreTiming::Event {
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s64 time;
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u64 fifo_order;
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std::weak_ptr<EventType> type;
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s64 reschedule_time;
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heap_t::handle_type handle{};
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// Sort by time, unless the times are the same, in which case sort by
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// the order added to the queue
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friend bool operator>(const Event& left, const Event& right) {
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return std::tie(left.time, left.fifo_order) > std::tie(right.time, right.fifo_order);
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}
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friend bool operator<(const Event& left, const Event& right) {
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return std::tie(left.time, left.fifo_order) < std::tie(right.time, right.fifo_order);
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}
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};
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CoreTiming::CoreTiming() : clock{Common::CreateOptimalClock()} {}
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CoreTiming::~CoreTiming() {
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@ -87,7 +69,7 @@ void CoreTiming::Pause(bool is_paused) {
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}
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void CoreTiming::SyncPause(bool is_paused) {
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if (is_paused == paused && paused_set == paused) {
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if (is_paused == paused && paused_set == is_paused) {
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return;
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}
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@ -112,7 +94,7 @@ bool CoreTiming::IsRunning() const {
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bool CoreTiming::HasPendingEvents() const {
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std::scoped_lock lock{basic_lock};
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return !(wait_set && event_queue.empty());
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return !event_queue.empty();
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}
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void CoreTiming::ScheduleEvent(std::chrono::nanoseconds ns_into_future,
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@ -121,8 +103,8 @@ void CoreTiming::ScheduleEvent(std::chrono::nanoseconds ns_into_future,
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std::scoped_lock scope{basic_lock};
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const auto next_time{absolute_time ? ns_into_future : GetGlobalTimeNs() + ns_into_future};
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auto h{event_queue.emplace(Event{next_time.count(), event_fifo_id++, event_type, 0})};
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(*h).handle = h;
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event_queue.emplace_back(Event{next_time.count(), event_fifo_id++, event_type});
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std::push_heap(event_queue.begin(), event_queue.end(), std::greater<>());
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}
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event.Set();
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@ -136,9 +118,9 @@ void CoreTiming::ScheduleLoopingEvent(std::chrono::nanoseconds start_time,
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std::scoped_lock scope{basic_lock};
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const auto next_time{absolute_time ? start_time : GetGlobalTimeNs() + start_time};
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auto h{event_queue.emplace(
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Event{next_time.count(), event_fifo_id++, event_type, resched_time.count()})};
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(*h).handle = h;
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event_queue.emplace_back(
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Event{next_time.count(), event_fifo_id++, event_type, resched_time.count()});
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std::push_heap(event_queue.begin(), event_queue.end(), std::greater<>());
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}
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event.Set();
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@ -149,17 +131,11 @@ void CoreTiming::UnscheduleEvent(const std::shared_ptr<EventType>& event_type,
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{
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std::scoped_lock lk{basic_lock};
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std::vector<heap_t::handle_type> to_remove;
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for (auto itr = event_queue.begin(); itr != event_queue.end(); itr++) {
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const Event& e = *itr;
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if (e.type.lock().get() == event_type.get()) {
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to_remove.push_back(itr->handle);
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}
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}
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for (auto& h : to_remove) {
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event_queue.erase(h);
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}
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event_queue.erase(
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std::remove_if(event_queue.begin(), event_queue.end(),
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[&](const Event& e) { return e.type.lock().get() == event_type.get(); }),
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event_queue.end());
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std::make_heap(event_queue.begin(), event_queue.end(), std::greater<>());
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event_type->sequence_number++;
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}
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@ -172,7 +148,7 @@ void CoreTiming::UnscheduleEvent(const std::shared_ptr<EventType>& event_type,
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void CoreTiming::AddTicks(u64 ticks_to_add) {
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cpu_ticks += ticks_to_add;
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downcount -= static_cast<s64>(cpu_ticks);
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downcount -= static_cast<s64>(ticks_to_add);
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}
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void CoreTiming::Idle() {
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@ -180,7 +156,7 @@ void CoreTiming::Idle() {
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}
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void CoreTiming::ResetTicks() {
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downcount = MAX_SLICE_LENGTH;
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downcount.store(MAX_SLICE_LENGTH, std::memory_order_release);
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}
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u64 CoreTiming::GetClockTicks() const {
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@ -201,48 +177,38 @@ std::optional<s64> CoreTiming::Advance() {
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std::scoped_lock lock{advance_lock, basic_lock};
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global_timer = GetGlobalTimeNs().count();
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while (!event_queue.empty() && event_queue.top().time <= global_timer) {
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const Event& evt = event_queue.top();
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while (!event_queue.empty() && event_queue.front().time <= global_timer) {
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Event evt = std::move(event_queue.front());
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std::pop_heap(event_queue.begin(), event_queue.end(), std::greater<>());
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event_queue.pop_back();
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if (const auto event_type{evt.type.lock()}) {
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if (const auto event_type = evt.type.lock()) {
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const auto evt_time = evt.time;
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const auto evt_sequence_num = event_type->sequence_number;
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if (evt.reschedule_time == 0) {
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event_queue.pop();
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basic_lock.unlock();
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basic_lock.unlock();
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const auto new_schedule_time = event_type->callback(
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evt_time, std::chrono::nanoseconds{GetGlobalTimeNs().count() - evt_time});
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event_type->callback(
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evt_time, std::chrono::nanoseconds{GetGlobalTimeNs().count() - evt_time});
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basic_lock.lock();
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basic_lock.lock();
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} else {
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basic_lock.unlock();
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if (evt_sequence_num != event_type->sequence_number) {
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continue;
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}
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const auto new_schedule_time{event_type->callback(
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evt_time, std::chrono::nanoseconds{GetGlobalTimeNs().count() - evt_time})};
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if (new_schedule_time.has_value() || evt.reschedule_time != 0) {
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const auto next_schedule_time = new_schedule_time.value_or(
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std::chrono::nanoseconds{evt.reschedule_time});
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basic_lock.lock();
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if (evt_sequence_num != event_type->sequence_number) {
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// Heap handle is invalidated after external modification.
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continue;
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}
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const auto next_schedule_time{new_schedule_time.has_value()
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? new_schedule_time.value().count()
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: evt.reschedule_time};
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// If this event was scheduled into a pause, its time now is going to be way
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// behind. Re-set this event to continue from the end of the pause.
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auto next_time{evt.time + next_schedule_time};
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auto next_time = evt.time + next_schedule_time.count();
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if (evt.time < pause_end_time) {
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next_time = pause_end_time + next_schedule_time;
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next_time = pause_end_time + next_schedule_time.count();
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}
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event_queue.update(evt.handle, Event{next_time, event_fifo_id++, evt.type,
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next_schedule_time, evt.handle});
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event_queue.emplace_back(Event{next_time, event_fifo_id++, evt.type,
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next_schedule_time.count()});
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std::push_heap(event_queue.begin(), event_queue.end(), std::greater<>());
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}
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}
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@ -250,7 +216,7 @@ std::optional<s64> CoreTiming::Advance() {
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}
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if (!event_queue.empty()) {
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return event_queue.top().time;
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return event_queue.front().time;
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} else {
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return std::nullopt;
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}
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@ -269,7 +235,7 @@ void CoreTiming::ThreadLoop() {
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#ifdef _WIN32
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while (!paused && !event.IsSet() && wait_time > 0) {
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wait_time = *next_time - GetGlobalTimeNs().count();
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if (wait_time >= timer_resolution_ns) {
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if (wait_time >= 1'000'000) { // 1ms
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Common::Windows::SleepForOneTick();
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} else {
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#ifdef ARCHITECTURE_x86_64
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@ -290,10 +256,8 @@ void CoreTiming::ThreadLoop() {
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} else {
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// Queue is empty, wait until another event is scheduled and signals us to
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// continue.
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wait_set = true;
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event.Wait();
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}
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wait_set = false;
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}
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paused_set = true;
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@ -327,10 +291,4 @@ std::chrono::microseconds CoreTiming::GetGlobalTimeUs() const {
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return std::chrono::microseconds{Common::WallClock::CPUTickToUS(cpu_ticks)};
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}
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#ifdef _WIN32
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void CoreTiming::SetTimerResolutionNs(std::chrono::nanoseconds ns) {
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timer_resolution_ns = ns.count();
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}
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#endif
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} // namespace Core::Timing
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@ -1,6 +1,12 @@
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// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#include <algorithm>
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#include <atomic>
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#include <memory>
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#include <thread>
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#include <vector>
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#include "common/fiber.h"
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#include "common/microprofile.h"
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#include "common/scope_exit.h"
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@ -24,6 +30,7 @@ void CpuManager::Initialize() {
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num_cores = is_multicore ? Core::Hardware::NUM_CPU_CORES : 1;
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gpu_barrier = std::make_unique<Common::Barrier>(num_cores + 1);
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core_data.resize(num_cores);
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for (std::size_t core = 0; core < num_cores; core++) {
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core_data[core].host_thread =
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std::jthread([this, core](std::stop_token token) { RunThread(token, core); });
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}
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void CpuManager::Shutdown() {
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for (std::size_t core = 0; core < num_cores; core++) {
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if (core_data[core].host_thread.joinable()) {
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core_data[core].host_thread.request_stop();
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core_data[core].host_thread.join();
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for (auto& data : core_data) {
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if (data.host_thread.joinable()) {
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data.host_thread.request_stop();
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data.host_thread.join();
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}
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}
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}
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@ -66,12 +73,7 @@ void CpuManager::HandleInterrupt() {
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Kernel::KInterruptManager::HandleInterrupt(kernel, static_cast<s32>(core_index));
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}
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///////////////////////////////////////////////////////////////////////////////
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/// MultiCore ///
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///////////////////////////////////////////////////////////////////////////////
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void CpuManager::MultiCoreRunGuestThread() {
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// Similar to UserModeThreadStarter in HOS
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auto& kernel = system.Kernel();
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auto* thread = Kernel::GetCurrentThreadPointer(kernel);
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kernel.CurrentScheduler()->OnThreadStart();
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}
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void CpuManager::MultiCoreRunIdleThread() {
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// Not accurate to HOS. Remove this entire method when singlecore is removed.
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// See notes in KScheduler::ScheduleImpl for more information about why this
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// is inaccurate.
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auto& kernel = system.Kernel();
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kernel.CurrentScheduler()->OnThreadStart();
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}
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}
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///////////////////////////////////////////////////////////////////////////////
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/// SingleCore ///
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///////////////////////////////////////////////////////////////////////////////
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void CpuManager::SingleCoreRunGuestThread() {
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auto& kernel = system.Kernel();
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auto* thread = Kernel::GetCurrentThreadPointer(kernel);
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@ -154,19 +148,16 @@ void CpuManager::PreemptSingleCore(bool from_running_environment) {
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system.CoreTiming().Advance();
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kernel.SetIsPhantomModeForSingleCore(false);
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}
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current_core.store((current_core + 1) % Core::Hardware::NUM_CPU_CORES);
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current_core.store((current_core + 1) % Core::Hardware::NUM_CPU_CORES, std::memory_order_release);
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system.CoreTiming().ResetTicks();
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kernel.Scheduler(current_core).PreemptSingleCore();
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// We've now been scheduled again, and we may have exchanged schedulers.
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// Reload the scheduler in case it's different.
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if (!kernel.Scheduler(current_core).IsIdle()) {
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idle_count = 0;
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}
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}
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void CpuManager::GuestActivate() {
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// Similar to the HorizonKernelMain callback in HOS
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auto& kernel = system.Kernel();
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auto* scheduler = kernel.CurrentScheduler();
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@ -184,27 +175,19 @@ void CpuManager::ShutdownThread() {
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}
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void CpuManager::RunThread(std::stop_token token, std::size_t core) {
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/// Initialization
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system.RegisterCoreThread(core);
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std::string name;
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if (is_multicore) {
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name = "CPUCore_" + std::to_string(core);
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} else {
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name = "CPUThread";
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}
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std::string name = is_multicore ? "CPUCore_" + std::to_string(core) : "CPUThread";
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MicroProfileOnThreadCreate(name.c_str());
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Common::SetCurrentThreadName(name.c_str());
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Common::SetCurrentThreadPriority(Common::ThreadPriority::Critical);
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auto& data = core_data[core];
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data.host_context = Common::Fiber::ThreadToFiber();
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// Cleanup
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SCOPE_EXIT {
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data.host_context->Exit();
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MicroProfileOnThreadExit();
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};
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// Running
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if (!gpu_barrier->Sync(token)) {
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return;
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}
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