diff options
Diffstat (limited to 'src/core/core_timing.cpp')
| -rw-r--r-- | src/core/core_timing.cpp | 203 |
1 files changed, 151 insertions, 52 deletions
diff --git a/src/core/core_timing.cpp b/src/core/core_timing.cpp index 29e7dba9b..5425637f5 100644 --- a/src/core/core_timing.cpp +++ b/src/core/core_timing.cpp @@ -6,7 +6,9 @@ #include <string> #include <tuple> +#include "common/logging/log.h" #include "common/microprofile.h" +#include "common/thread.h" #include "core/core_timing.h" #include "core/core_timing_util.h" #include "core/hardware_properties.h" @@ -20,10 +22,11 @@ std::shared_ptr<EventType> CreateEvent(std::string name, TimedCallback&& callbac } struct CoreTiming::Event { - u64 time; + s64 time; u64 fifo_order; std::uintptr_t user_data; std::weak_ptr<EventType> type; + s64 reschedule_time; // Sort by time, unless the times are the same, in which case sort by // the order added to the queue @@ -41,11 +44,11 @@ CoreTiming::CoreTiming() CoreTiming::~CoreTiming() = default; -void CoreTiming::ThreadEntry(CoreTiming& instance) { - constexpr char name[] = "yuzu:HostTiming"; - MicroProfileOnThreadCreate(name); - Common::SetCurrentThreadName(name); - Common::SetCurrentThreadPriority(Common::ThreadPriority::VeryHigh); +void CoreTiming::ThreadEntry(CoreTiming& instance, size_t id) { + const std::string name = "yuzu:HostTiming_" + std::to_string(id); + MicroProfileOnThreadCreate(name.c_str()); + Common::SetCurrentThreadName(name.c_str()); + Common::SetCurrentThreadPriority(Common::ThreadPriority::Critical); instance.on_thread_init(); instance.ThreadLoop(); MicroProfileOnThreadExit(); @@ -56,71 +59,131 @@ void CoreTiming::Initialize(std::function<void()>&& on_thread_init_) { event_fifo_id = 0; shutting_down = false; ticks = 0; - const auto empty_timed_callback = [](std::uintptr_t, std::chrono::nanoseconds) {}; + const auto empty_timed_callback = [](std::uintptr_t, u64, std::chrono::nanoseconds) + -> std::optional<std::chrono::nanoseconds> { return std::nullopt; }; ev_lost = CreateEvent("_lost_event", empty_timed_callback); if (is_multicore) { - timer_thread = std::make_unique<std::thread>(ThreadEntry, std::ref(*this)); + worker_threads.emplace_back(ThreadEntry, std::ref(*this), 0); } } void CoreTiming::Shutdown() { - paused = true; + is_paused = true; shutting_down = true; - pause_event.Set(); - event.Set(); - if (timer_thread) { - timer_thread->join(); + std::atomic_thread_fence(std::memory_order_release); + + event_cv.notify_all(); + wait_pause_cv.notify_all(); + for (auto& thread : worker_threads) { + thread.join(); } + worker_threads.clear(); + pause_callbacks.clear(); ClearPendingEvents(); - timer_thread.reset(); has_started = false; } -void CoreTiming::Pause(bool is_paused) { - paused = is_paused; - pause_event.Set(); +void CoreTiming::Pause(bool is_paused_) { + std::unique_lock main_lock(event_mutex); + if (is_paused_ == paused_state.load(std::memory_order_relaxed)) { + return; + } + if (is_multicore) { + is_paused = is_paused_; + event_cv.notify_all(); + if (!is_paused_) { + wait_pause_cv.notify_all(); + } + } + paused_state.store(is_paused_, std::memory_order_relaxed); + + if (!is_paused_) { + pause_end_time = GetGlobalTimeNs().count(); + } + + for (auto& cb : pause_callbacks) { + cb(is_paused_); + } } -void CoreTiming::SyncPause(bool is_paused) { - if (is_paused == paused && paused_set == paused) { +void CoreTiming::SyncPause(bool is_paused_) { + std::unique_lock main_lock(event_mutex); + if (is_paused_ == paused_state.load(std::memory_order_relaxed)) { return; } - Pause(is_paused); - if (timer_thread) { - if (!is_paused) { - pause_event.Set(); + + if (is_multicore) { + is_paused = is_paused_; + event_cv.notify_all(); + if (!is_paused_) { + wait_pause_cv.notify_all(); + } + } + paused_state.store(is_paused_, std::memory_order_relaxed); + if (is_multicore) { + if (is_paused_) { + wait_signal_cv.wait(main_lock, [this] { return pause_count == worker_threads.size(); }); + } else { + wait_signal_cv.wait(main_lock, [this] { return pause_count == 0; }); } - event.Set(); - while (paused_set != is_paused) - ; + } + + if (!is_paused_) { + pause_end_time = GetGlobalTimeNs().count(); + } + + for (auto& cb : pause_callbacks) { + cb(is_paused_); } } bool CoreTiming::IsRunning() const { - return !paused_set; + return !paused_state.load(std::memory_order_acquire); } bool CoreTiming::HasPendingEvents() const { - return !(wait_set && event_queue.empty()); + std::unique_lock main_lock(event_mutex); + return !event_queue.empty() || pending_events.load(std::memory_order_relaxed) != 0; } void CoreTiming::ScheduleEvent(std::chrono::nanoseconds ns_into_future, const std::shared_ptr<EventType>& event_type, - std::uintptr_t user_data) { - { - std::scoped_lock scope{basic_lock}; - const u64 timeout = static_cast<u64>((GetGlobalTimeNs() + ns_into_future).count()); + std::uintptr_t user_data, bool absolute_time) { + + std::unique_lock main_lock(event_mutex); + const auto next_time{absolute_time ? ns_into_future : GetGlobalTimeNs() + ns_into_future}; - event_queue.emplace_back(Event{timeout, event_fifo_id++, user_data, event_type}); + event_queue.emplace_back(Event{next_time.count(), event_fifo_id++, user_data, event_type, 0}); + pending_events.fetch_add(1, std::memory_order_relaxed); - std::push_heap(event_queue.begin(), event_queue.end(), std::greater<>()); + std::push_heap(event_queue.begin(), event_queue.end(), std::greater<>()); + + if (is_multicore) { + event_cv.notify_one(); + } +} + +void CoreTiming::ScheduleLoopingEvent(std::chrono::nanoseconds start_time, + std::chrono::nanoseconds resched_time, + const std::shared_ptr<EventType>& event_type, + std::uintptr_t user_data, bool absolute_time) { + std::unique_lock main_lock(event_mutex); + const auto next_time{absolute_time ? start_time : GetGlobalTimeNs() + start_time}; + + event_queue.emplace_back( + Event{next_time.count(), event_fifo_id++, user_data, event_type, resched_time.count()}); + pending_events.fetch_add(1, std::memory_order_relaxed); + + std::push_heap(event_queue.begin(), event_queue.end(), std::greater<>()); + + if (is_multicore) { + event_cv.notify_one(); } - event.Set(); } void CoreTiming::UnscheduleEvent(const std::shared_ptr<EventType>& event_type, std::uintptr_t user_data) { - std::scoped_lock scope{basic_lock}; + std::unique_lock main_lock(event_mutex); const auto itr = std::remove_if(event_queue.begin(), event_queue.end(), [&](const Event& e) { return e.type.lock().get() == event_type.get() && e.user_data == user_data; }); @@ -129,6 +192,7 @@ void CoreTiming::UnscheduleEvent(const std::shared_ptr<EventType>& event_type, if (itr != event_queue.end()) { event_queue.erase(itr, event_queue.end()); std::make_heap(event_queue.begin(), event_queue.end(), std::greater<>()); + pending_events.fetch_sub(1, std::memory_order_relaxed); } } @@ -168,11 +232,12 @@ u64 CoreTiming::GetClockTicks() const { } void CoreTiming::ClearPendingEvents() { + std::unique_lock main_lock(event_mutex); event_queue.clear(); } void CoreTiming::RemoveEvent(const std::shared_ptr<EventType>& event_type) { - std::scoped_lock lock{basic_lock}; + std::unique_lock main_lock(event_mutex); const auto itr = std::remove_if(event_queue.begin(), event_queue.end(), [&](const Event& e) { return e.type.lock().get() == event_type.get(); @@ -185,22 +250,48 @@ void CoreTiming::RemoveEvent(const std::shared_ptr<EventType>& event_type) { } } +void CoreTiming::RegisterPauseCallback(PauseCallback&& callback) { + std::unique_lock main_lock(event_mutex); + pause_callbacks.emplace_back(std::move(callback)); +} + std::optional<s64> CoreTiming::Advance() { - std::scoped_lock lock{advance_lock, basic_lock}; global_timer = GetGlobalTimeNs().count(); + std::unique_lock main_lock(event_mutex); while (!event_queue.empty() && event_queue.front().time <= global_timer) { Event evt = std::move(event_queue.front()); std::pop_heap(event_queue.begin(), event_queue.end(), std::greater<>()); event_queue.pop_back(); - basic_lock.unlock(); if (const auto event_type{evt.type.lock()}) { - event_type->callback( - evt.user_data, std::chrono::nanoseconds{static_cast<s64>(global_timer - evt.time)}); + event_mutex.unlock(); + + const auto new_schedule_time{event_type->callback( + evt.user_data, evt.time, + std::chrono::nanoseconds{GetGlobalTimeNs().count() - evt.time})}; + + event_mutex.lock(); + pending_events.fetch_sub(1, std::memory_order_relaxed); + + if (evt.reschedule_time != 0) { + // If this event was scheduled into a pause, its time now is going to be way behind. + // Re-set this event to continue from the end of the pause. + auto next_time{evt.time + evt.reschedule_time}; + if (evt.time < pause_end_time) { + next_time = pause_end_time + evt.reschedule_time; + } + + const auto next_schedule_time{new_schedule_time.has_value() + ? new_schedule_time.value().count() + : evt.reschedule_time}; + event_queue.emplace_back( + Event{next_time, event_fifo_id++, evt.user_data, evt.type, next_schedule_time}); + pending_events.fetch_add(1, std::memory_order_relaxed); + std::push_heap(event_queue.begin(), event_queue.end(), std::greater<>()); + } } - basic_lock.lock(); global_timer = GetGlobalTimeNs().count(); } @@ -213,26 +304,34 @@ std::optional<s64> CoreTiming::Advance() { } void CoreTiming::ThreadLoop() { + const auto predicate = [this] { return !event_queue.empty() || is_paused; }; has_started = true; while (!shutting_down) { - while (!paused) { - paused_set = false; + while (!is_paused && !shutting_down) { 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); + std::unique_lock main_lock(event_mutex); + event_cv.wait_for(main_lock, next_time_ns, predicate); } } else { - wait_set = true; - event.Wait(); + std::unique_lock main_lock(event_mutex); + event_cv.wait(main_lock, predicate); } - wait_set = false; } - paused_set = true; - clock->Pause(true); - pause_event.Wait(); - clock->Pause(false); + std::unique_lock main_lock(event_mutex); + pause_count++; + if (pause_count == worker_threads.size()) { + clock->Pause(true); + wait_signal_cv.notify_all(); + } + wait_pause_cv.wait(main_lock, [this] { return !is_paused || shutting_down; }); + pause_count--; + if (pause_count == 0) { + clock->Pause(false); + wait_signal_cv.notify_all(); + } } } |