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https://gitlab.com/suyu-emu/suyu.git
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Core: Reimplement Core Timing.
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parent
096366ead5
commit
846c994cc9
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@ -7,6 +7,7 @@
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#include <tuple>
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#include "common/microprofile.h"
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#include "common/thread.h"
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#include "core/core_timing.h"
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#include "core/core_timing_util.h"
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#include "core/hardware_properties.h"
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@ -59,68 +60,96 @@ void CoreTiming::Initialize(std::function<void()>&& on_thread_init_) {
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const auto empty_timed_callback = [](std::uintptr_t, std::chrono::nanoseconds) {};
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ev_lost = CreateEvent("_lost_event", empty_timed_callback);
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if (is_multicore) {
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timer_thread = std::make_unique<std::thread>(ThreadEntry, std::ref(*this));
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const auto hardware_concurrency = std::thread::hardware_concurrency();
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worker_threads.emplace_back(ThreadEntry, std::ref(*this));
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if (hardware_concurrency > 8) {
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worker_threads.emplace_back(ThreadEntry, std::ref(*this));
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}
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}
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}
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void CoreTiming::Shutdown() {
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paused = true;
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is_paused = true;
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shutting_down = true;
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pause_event.Set();
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event.Set();
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if (timer_thread) {
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timer_thread->join();
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{
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std::unique_lock<std::mutex> main_lock(event_mutex);
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event_cv.notify_all();
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wait_pause_cv.notify_all();
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}
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for (auto& thread : worker_threads) {
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thread.join();
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}
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worker_threads.clear();
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ClearPendingEvents();
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timer_thread.reset();
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has_started = false;
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}
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void CoreTiming::Pause(bool is_paused) {
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paused = is_paused;
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pause_event.Set();
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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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void CoreTiming::Pause(bool is_paused_) {
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std::unique_lock<std::mutex> main_lock(event_mutex);
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if (is_paused_ == paused_state.load(std::memory_order_relaxed)) {
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return;
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}
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Pause(is_paused);
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if (timer_thread) {
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if (!is_paused) {
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pause_event.Set();
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if (is_multicore) {
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is_paused = is_paused_;
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event_cv.notify_all();
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if (!is_paused_) {
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wait_pause_cv.notify_all();
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}
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}
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paused_state.store(is_paused_, std::memory_order_relaxed);
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}
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void CoreTiming::SyncPause(bool is_paused_) {
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std::unique_lock<std::mutex> main_lock(event_mutex);
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if (is_paused_ == paused_state.load(std::memory_order_relaxed)) {
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return;
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}
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if (is_multicore) {
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is_paused = is_paused_;
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event_cv.notify_all();
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if (!is_paused_) {
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wait_pause_cv.notify_all();
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}
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}
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paused_state.store(is_paused_, std::memory_order_relaxed);
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if (is_multicore) {
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if (is_paused_) {
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wait_signal_cv.wait(main_lock, [this] { return pause_count == worker_threads.size(); });
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} else {
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wait_signal_cv.wait(main_lock, [this] { return pause_count == 0; });
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}
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event.Set();
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while (paused_set != is_paused)
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;
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}
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}
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bool CoreTiming::IsRunning() const {
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return !paused_set;
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return !paused_state.load(std::memory_order_acquire);
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}
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bool CoreTiming::HasPendingEvents() const {
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return !(wait_set && event_queue.empty());
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std::unique_lock<std::mutex> main_lock(event_mutex);
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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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const std::shared_ptr<EventType>& event_type,
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std::uintptr_t user_data) {
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{
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std::scoped_lock scope{basic_lock};
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std::unique_lock<std::mutex> main_lock(event_mutex);
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const u64 timeout = static_cast<u64>((GetGlobalTimeNs() + ns_into_future).count());
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event_queue.emplace_back(Event{timeout, event_fifo_id++, user_data, event_type});
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std::push_heap(event_queue.begin(), event_queue.end(), std::greater<>());
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if (is_multicore) {
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event_cv.notify_one();
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}
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event.Set();
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}
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void CoreTiming::UnscheduleEvent(const std::shared_ptr<EventType>& event_type,
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std::uintptr_t user_data) {
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std::scoped_lock scope{basic_lock};
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std::unique_lock<std::mutex> main_lock(event_mutex);
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const auto itr = std::remove_if(event_queue.begin(), event_queue.end(), [&](const Event& e) {
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return e.type.lock().get() == event_type.get() && e.user_data == user_data;
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});
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@ -168,11 +197,12 @@ u64 CoreTiming::GetClockTicks() const {
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}
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void CoreTiming::ClearPendingEvents() {
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std::unique_lock<std::mutex> main_lock(event_mutex);
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event_queue.clear();
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}
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void CoreTiming::RemoveEvent(const std::shared_ptr<EventType>& event_type) {
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std::scoped_lock lock{basic_lock};
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std::unique_lock<std::mutex> main_lock(event_mutex);
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const auto itr = std::remove_if(event_queue.begin(), event_queue.end(), [&](const Event& e) {
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return e.type.lock().get() == event_type.get();
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@ -186,21 +216,21 @@ void CoreTiming::RemoveEvent(const std::shared_ptr<EventType>& event_type) {
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}
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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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std::unique_lock<std::mutex> main_lock(event_mutex);
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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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basic_lock.unlock();
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event_mutex.unlock();
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if (const auto event_type{evt.type.lock()}) {
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event_type->callback(
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evt.user_data, std::chrono::nanoseconds{static_cast<s64>(global_timer - evt.time)});
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event_type->callback(evt.user_data, std::chrono::nanoseconds{static_cast<s64>(
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GetGlobalTimeNs().count() - evt.time)});
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}
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basic_lock.lock();
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event_mutex.lock();
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global_timer = GetGlobalTimeNs().count();
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}
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@ -213,26 +243,34 @@ std::optional<s64> CoreTiming::Advance() {
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}
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void CoreTiming::ThreadLoop() {
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const auto predicate = [this] { return !event_queue.empty() || is_paused; };
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has_started = true;
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while (!shutting_down) {
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while (!paused) {
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paused_set = false;
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while (!is_paused && !shutting_down) {
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const auto next_time = Advance();
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if (next_time) {
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if (*next_time > 0) {
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std::chrono::nanoseconds next_time_ns = std::chrono::nanoseconds(*next_time);
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event.WaitFor(next_time_ns);
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std::unique_lock<std::mutex> main_lock(event_mutex);
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event_cv.wait_for(main_lock, next_time_ns, predicate);
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}
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} else {
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wait_set = true;
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event.Wait();
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std::unique_lock<std::mutex> main_lock(event_mutex);
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event_cv.wait(main_lock, predicate);
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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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std::unique_lock<std::mutex> main_lock(event_mutex);
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pause_count++;
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if (pause_count == worker_threads.size()) {
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clock->Pause(true);
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pause_event.Wait();
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wait_signal_cv.notify_all();
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}
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wait_pause_cv.wait(main_lock, [this] { return !is_paused || shutting_down; });
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pause_count--;
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if (pause_count == 0) {
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clock->Pause(false);
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wait_signal_cv.notify_all();
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}
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}
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}
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@ -14,7 +14,6 @@
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#include <vector>
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#include "common/common_types.h"
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#include "common/thread.h"
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#include "common/wall_clock.h"
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namespace Core::Timing {
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@ -146,19 +145,21 @@ private:
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u64 event_fifo_id = 0;
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std::shared_ptr<EventType> ev_lost;
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Common::Event event{};
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Common::Event pause_event{};
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std::mutex basic_lock;
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std::mutex advance_lock;
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std::unique_ptr<std::thread> timer_thread;
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std::atomic<bool> paused{};
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std::atomic<bool> paused_set{};
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std::atomic<bool> wait_set{};
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std::atomic<bool> shutting_down{};
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std::atomic<bool> has_started{};
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std::function<void()> on_thread_init{};
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std::vector<std::thread> worker_threads;
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std::condition_variable event_cv;
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std::condition_variable wait_pause_cv;
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std::condition_variable wait_signal_cv;
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mutable std::mutex event_mutex;
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std::atomic<bool> paused_state{};
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bool is_paused{};
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bool shutting_down{};
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bool is_multicore{};
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size_t pause_count{};
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/// Cycle timing
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u64 ticks{};
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static_assert(IDX < CB_IDS.size(), "IDX out of range");
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callbacks_ran_flags.set(IDX);
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REQUIRE(CB_IDS[IDX] == user_data);
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REQUIRE(CB_IDS[IDX] == CB_IDS[calls_order[expected_callback]]);
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delays[IDX] = ns_late.count();
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++expected_callback;
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}
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