Core/HostTiming: Allow events to be advanced manually.

This commit is contained in:
Fernando Sahmkow 2020-02-10 15:02:04 -04:00
parent 1f7dd36499
commit 49a7e0984a
4 changed files with 47 additions and 31 deletions

View File

@ -110,7 +110,7 @@ Fiber::Fiber(std::function<void(void*)>&& entry_point_func, void* start_paramete
FiberStartFunc); FiberStartFunc);
} }
Fiber::Fiber() : guard{}, entry_point{}, start_parameter{}, previous_fiber{} { Fiber::Fiber() {
impl = std::make_unique<FiberImpl>(); impl = std::make_unique<FiberImpl>();
} }

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@ -42,14 +42,15 @@ public:
u64 GetClockCycles() override { u64 GetClockCycles() override {
std::chrono::nanoseconds time_now = GetTimeNS(); std::chrono::nanoseconds time_now = GetTimeNS();
const u128 temporal = Common::Multiply64Into128(time_now.count(), emulated_clock_frequency); const u128 temporary =
return Common::Divide128On32(temporal, 1000000000).first; Common::Multiply64Into128(time_now.count(), emulated_clock_frequency);
return Common::Divide128On32(temporary, 1000000000).first;
} }
u64 GetCPUCycles() override { u64 GetCPUCycles() override {
std::chrono::nanoseconds time_now = GetTimeNS(); std::chrono::nanoseconds time_now = GetTimeNS();
const u128 temporal = Common::Multiply64Into128(time_now.count(), emulated_cpu_frequency); const u128 temporary = Common::Multiply64Into128(time_now.count(), emulated_cpu_frequency);
return Common::Divide128On32(temporal, 1000000000).first; return Common::Divide128On32(temporary, 1000000000).first;
} }
private: private:

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@ -42,7 +42,7 @@ CoreTiming::CoreTiming() {
CoreTiming::~CoreTiming() = default; CoreTiming::~CoreTiming() = default;
void CoreTiming::ThreadEntry(CoreTiming& instance) { void CoreTiming::ThreadEntry(CoreTiming& instance) {
instance.Advance(); instance.ThreadLoop();
} }
void CoreTiming::Initialize() { void CoreTiming::Initialize() {
@ -137,11 +137,8 @@ void CoreTiming::RemoveEvent(const std::shared_ptr<EventType>& event_type) {
basic_lock.unlock(); basic_lock.unlock();
} }
void CoreTiming::Advance() { std::optional<u64> CoreTiming::Advance() {
has_started = true; advance_lock.lock();
while (!shutting_down) {
while (!paused) {
paused_set = false;
basic_lock.lock(); basic_lock.lock();
global_timer = GetGlobalTimeNs().count(); global_timer = GetGlobalTimeNs().count();
@ -159,16 +156,30 @@ void CoreTiming::Advance() {
} }
if (!event_queue.empty()) { if (!event_queue.empty()) {
std::chrono::nanoseconds next_time = const u64 next_time = event_queue.front().time - global_timer;
std::chrono::nanoseconds(event_queue.front().time - global_timer);
basic_lock.unlock(); basic_lock.unlock();
event.WaitFor(next_time); advance_lock.unlock();
return next_time;
} else { } else {
basic_lock.unlock(); basic_lock.unlock();
advance_lock.unlock();
return std::nullopt;
}
}
void CoreTiming::ThreadLoop() {
has_started = true;
while (!shutting_down) {
while (!paused) {
paused_set = false;
const auto next_time = Advance();
if (next_time) {
std::chrono::nanoseconds next_time_ns = std::chrono::nanoseconds(*next_time);
event.WaitFor(next_time_ns);
} else {
wait_set = true; wait_set = true;
event.Wait(); event.Wait();
} }
wait_set = false; wait_set = false;
} }
paused_set = true; paused_set = true;

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@ -103,6 +103,9 @@ public:
/// Returns current time in nanoseconds. /// Returns current time in nanoseconds.
std::chrono::nanoseconds GetGlobalTimeNs() const; std::chrono::nanoseconds GetGlobalTimeNs() const;
/// Checks for events manually and returns time in nanoseconds for next event, threadsafe.
std::optional<u64> Advance();
private: private:
struct Event; struct Event;
@ -110,7 +113,7 @@ private:
void ClearPendingEvents(); void ClearPendingEvents();
static void ThreadEntry(CoreTiming& instance); static void ThreadEntry(CoreTiming& instance);
void Advance(); void ThreadLoop();
std::unique_ptr<Common::WallClock> clock; std::unique_ptr<Common::WallClock> clock;
@ -128,6 +131,7 @@ private:
std::shared_ptr<EventType> ev_lost; std::shared_ptr<EventType> ev_lost;
Common::Event event{}; Common::Event event{};
Common::SpinLock basic_lock{}; Common::SpinLock basic_lock{};
Common::SpinLock advance_lock{};
std::unique_ptr<std::thread> timer_thread; std::unique_ptr<std::thread> timer_thread;
std::atomic<bool> paused{}; std::atomic<bool> paused{};
std::atomic<bool> paused_set{}; std::atomic<bool> paused_set{};