diff options
Diffstat (limited to '')
-rw-r--r-- | src/core/core_timing.cpp | 85 |
1 files changed, 42 insertions, 43 deletions
diff --git a/src/core/core_timing.cpp b/src/core/core_timing.cpp index 6bac6722f..4f0a3f8ea 100644 --- a/src/core/core_timing.cpp +++ b/src/core/core_timing.cpp @@ -6,14 +6,21 @@ #include <string> #include <tuple> +#ifdef _WIN32 +#include "common/windows/timer_resolution.h" +#endif + +#ifdef ARCHITECTURE_x86_64 +#include "common/x64/cpu_wait.h" +#endif + #include "common/microprofile.h" #include "core/core_timing.h" -#include "core/core_timing_util.h" #include "core/hardware_properties.h" namespace Core::Timing { -constexpr s64 MAX_SLICE_LENGTH = 4000; +constexpr s64 MAX_SLICE_LENGTH = 10000; std::shared_ptr<EventType> CreateEvent(std::string name, TimedCallback&& callback) { return std::make_shared<EventType>(std::move(callback), std::move(name)); @@ -37,18 +44,17 @@ struct CoreTiming::Event { } }; -CoreTiming::CoreTiming() - : clock{Common::CreateBestMatchingClock(Hardware::BASE_CLOCK_RATE, Hardware::CNTFREQ)} {} +CoreTiming::CoreTiming() : clock{Common::CreateOptimalClock()} {} CoreTiming::~CoreTiming() { Reset(); } void CoreTiming::ThreadEntry(CoreTiming& instance) { - constexpr char name[] = "HostTiming"; + static constexpr char name[] = "HostTiming"; MicroProfileOnThreadCreate(name); Common::SetCurrentThreadName(name); - Common::SetCurrentThreadPriority(Common::ThreadPriority::Critical); + Common::SetCurrentThreadPriority(Common::ThreadPriority::High); instance.on_thread_init(); instance.ThreadLoop(); MicroProfileOnThreadExit(); @@ -59,7 +65,7 @@ void CoreTiming::Initialize(std::function<void()>&& on_thread_init_) { on_thread_init = std::move(on_thread_init_); event_fifo_id = 0; shutting_down = false; - ticks = 0; + cpu_ticks = 0; 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); @@ -164,38 +170,30 @@ void CoreTiming::UnscheduleEvent(const std::shared_ptr<EventType>& event_type, } void CoreTiming::AddTicks(u64 ticks_to_add) { - ticks += ticks_to_add; - downcount -= static_cast<s64>(ticks); + cpu_ticks += ticks_to_add; + downcount -= static_cast<s64>(cpu_ticks); } void CoreTiming::Idle() { - if (!event_queue.empty()) { - const u64 next_event_time = event_queue.front().time; - const u64 next_ticks = nsToCycles(std::chrono::nanoseconds(next_event_time)) + 10U; - if (next_ticks > ticks) { - ticks = next_ticks; - } - return; - } - ticks += 1000U; + cpu_ticks += 1000U; } void CoreTiming::ResetTicks() { downcount = MAX_SLICE_LENGTH; } -u64 CoreTiming::GetCPUTicks() const { - if (is_multicore) { - return clock->GetCPUCycles(); +u64 CoreTiming::GetClockTicks() const { + if (is_multicore) [[likely]] { + return clock->GetCNTPCT(); } - return ticks; + return Common::WallClock::CPUTickToCNTPCT(cpu_ticks); } -u64 CoreTiming::GetClockTicks() const { - if (is_multicore) { - return clock->GetClockCycles(); +u64 CoreTiming::GetGPUTicks() const { + if (is_multicore) [[likely]] { + return clock->GetGPUTick(); } - return CpuCyclesToClockCycles(ticks); + return Common::WallClock::CPUTickToGPUTick(cpu_ticks); } std::optional<s64> CoreTiming::Advance() { @@ -252,21 +250,24 @@ void CoreTiming::ThreadLoop() { const auto next_time = Advance(); if (next_time) { // There are more events left in the queue, wait until the next event. - const auto wait_time = *next_time - GetGlobalTimeNs().count(); + auto wait_time = *next_time - GetGlobalTimeNs().count(); if (wait_time > 0) { #ifdef _WIN32 - // Assume a timer resolution of 1ms. - static constexpr s64 TimerResolutionNS = 1000000; + const auto timer_resolution_ns = + Common::Windows::GetCurrentTimerResolution().count(); - // Sleep in discrete intervals of the timer resolution, and spin the rest. - const auto sleep_time = wait_time - (wait_time % TimerResolutionNS); - if (sleep_time > 0) { - event.WaitFor(std::chrono::nanoseconds(sleep_time)); - } + while (!paused && !event.IsSet() && wait_time > 0) { + wait_time = *next_time - GetGlobalTimeNs().count(); - while (!paused && !event.IsSet() && GetGlobalTimeNs().count() < *next_time) { - // Yield to reduce thread starvation. - std::this_thread::yield(); + if (wait_time >= timer_resolution_ns) { + Common::Windows::SleepForOneTick(); + } else { +#ifdef ARCHITECTURE_x86_64 + Common::X64::MicroSleep(); +#else + std::this_thread::yield(); +#endif + } } if (event.IsSet()) { @@ -285,9 +286,7 @@ void CoreTiming::ThreadLoop() { } paused_set = true; - clock->Pause(true); pause_event.Wait(); - clock->Pause(false); } } @@ -304,17 +303,17 @@ void CoreTiming::Reset() { } std::chrono::nanoseconds CoreTiming::GetGlobalTimeNs() const { - if (is_multicore) { + if (is_multicore) [[likely]] { return clock->GetTimeNS(); } - return CyclesToNs(ticks); + return std::chrono::nanoseconds{Common::WallClock::CPUTickToNS(cpu_ticks)}; } std::chrono::microseconds CoreTiming::GetGlobalTimeUs() const { - if (is_multicore) { + if (is_multicore) [[likely]] { return clock->GetTimeUS(); } - return CyclesToUs(ticks); + return std::chrono::microseconds{Common::WallClock::CPUTickToUS(cpu_ticks)}; } } // namespace Core::Timing |