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-rw-r--r--src/core/CMakeLists.txt2
-rw-r--r--src/core/core.cpp8
-rw-r--r--src/core/core.h7
-rw-r--r--src/core/file_sys/archive_extsavedata.h2
-rw-r--r--src/core/frontend/camera/factory.h4
-rw-r--r--src/core/frontend/emu_window.cpp5
-rw-r--r--src/core/gdbstub/gdbstub.cpp1
-rw-r--r--src/core/hle/ipc.h4
-rw-r--r--src/core/hle/kernel/server_session.h4
-rw-r--r--src/core/hle/kernel/thread.h1
-rw-r--r--src/core/hle/kernel/timer.cpp2
-rw-r--r--src/core/hle/service/cam/cam.h2
-rw-r--r--src/core/hle/service/gsp_gpu.cpp8
-rw-r--r--src/core/hle/service/ldr_ro/cro_helper.h4
-rw-r--r--src/core/hle/service/ldr_ro/ldr_ro.cpp1
-rw-r--r--src/core/hw/gpu.cpp41
-rw-r--r--src/core/hw/gpu.h2
-rw-r--r--src/core/loader/loader.h2
-rw-r--r--src/core/perf_stats.cpp105
-rw-r--r--src/core/perf_stats.h83
20 files changed, 229 insertions, 59 deletions
diff --git a/src/core/CMakeLists.txt b/src/core/CMakeLists.txt
index 8334fece9..ffd67f074 100644
--- a/src/core/CMakeLists.txt
+++ b/src/core/CMakeLists.txt
@@ -173,6 +173,7 @@ set(SRCS
loader/smdh.cpp
tracer/recorder.cpp
memory.cpp
+ perf_stats.cpp
settings.cpp
)
@@ -363,6 +364,7 @@ set(HEADERS
memory.h
memory_setup.h
mmio.h
+ perf_stats.h
settings.h
)
diff --git a/src/core/core.cpp b/src/core/core.cpp
index c9c9b7615..140ff6451 100644
--- a/src/core/core.cpp
+++ b/src/core/core.cpp
@@ -109,6 +109,10 @@ void System::PrepareReschedule() {
reschedule_pending = true;
}
+PerfStats::Results System::GetAndResetPerfStats() {
+ return perf_stats.GetAndResetStats(CoreTiming::GetGlobalTimeUs());
+}
+
void System::Reschedule() {
if (!reschedule_pending) {
return;
@@ -140,6 +144,10 @@ System::ResultStatus System::Init(EmuWindow* emu_window, u32 system_mode) {
LOG_DEBUG(Core, "Initialized OK");
+ // Reset counters and set time origin to current frame
+ GetAndResetPerfStats();
+ perf_stats.BeginSystemFrame();
+
return ResultStatus::Success;
}
diff --git a/src/core/core.h b/src/core/core.h
index 17572a74f..6c9c936b5 100644
--- a/src/core/core.h
+++ b/src/core/core.h
@@ -6,9 +6,9 @@
#include <memory>
#include <string>
-
#include "common/common_types.h"
#include "core/memory.h"
+#include "core/perf_stats.h"
class EmuWindow;
class ARM_Interface;
@@ -83,6 +83,8 @@ public:
/// Prepare the core emulation for a reschedule
void PrepareReschedule();
+ PerfStats::Results GetAndResetPerfStats();
+
/**
* Gets a reference to the emulated CPU.
* @returns A reference to the emulated CPU.
@@ -91,6 +93,9 @@ public:
return *cpu_core;
}
+ PerfStats perf_stats;
+ FrameLimiter frame_limiter;
+
private:
/**
* Initialize the emulated system.
diff --git a/src/core/file_sys/archive_extsavedata.h b/src/core/file_sys/archive_extsavedata.h
index 6a3431e94..f705ade1c 100644
--- a/src/core/file_sys/archive_extsavedata.h
+++ b/src/core/file_sys/archive_extsavedata.h
@@ -52,7 +52,7 @@ private:
/**
* This holds the full directory path for this archive, it is only set after a successful call
- * to Open, this is formed as <base extsavedatapath>/<type>/<high>/<low>.
+ * to Open, this is formed as `<base extsavedatapath>/<type>/<high>/<low>`.
* See GetExtSaveDataPath for the code that extracts this data from an archive path.
*/
std::string mount_point;
diff --git a/src/core/frontend/camera/factory.h b/src/core/frontend/camera/factory.h
index d68be16e5..f46413fa7 100644
--- a/src/core/frontend/camera/factory.h
+++ b/src/core/frontend/camera/factory.h
@@ -16,8 +16,8 @@ public:
/**
* Creates a camera object based on the configuration string.
- * @params config Configuration string to create the camera. The implementation can decide the
- * meaning of this string.
+ * @param config Configuration string to create the camera. The implementation can decide the
+ * meaning of this string.
* @returns a unique_ptr to the created camera object.
*/
virtual std::unique_ptr<CameraInterface> Create(const std::string& config) const = 0;
diff --git a/src/core/frontend/emu_window.cpp b/src/core/frontend/emu_window.cpp
index 6b4637741..a155b657d 100644
--- a/src/core/frontend/emu_window.cpp
+++ b/src/core/frontend/emu_window.cpp
@@ -5,7 +5,7 @@
#include <algorithm>
#include <cmath>
#include "common/assert.h"
-#include "common/profiler_reporting.h"
+#include "core/core.h"
#include "core/frontend/emu_window.h"
#include "core/frontend/key_map.h"
#include "video_core/video_core.h"
@@ -104,8 +104,7 @@ void EmuWindow::AccelerometerChanged(float x, float y, float z) {
void EmuWindow::GyroscopeChanged(float x, float y, float z) {
constexpr float FULL_FPS = 60;
float coef = GetGyroscopeRawToDpsCoefficient();
- float stretch =
- FULL_FPS / Common::Profiling::GetTimingResultsAggregator()->GetAggregatedResults().fps;
+ float stretch = Core::System::GetInstance().perf_stats.GetLastFrameTimeScale();
std::lock_guard<std::mutex> lock(gyro_mutex);
gyro_x = static_cast<s16>(x * coef * stretch);
gyro_y = static_cast<s16>(y * coef * stretch);
diff --git a/src/core/gdbstub/gdbstub.cpp b/src/core/gdbstub/gdbstub.cpp
index 5cf45ada5..123fe7cd4 100644
--- a/src/core/gdbstub/gdbstub.cpp
+++ b/src/core/gdbstub/gdbstub.cpp
@@ -230,6 +230,7 @@ static void GdbHexToMem(u8* dest, const u8* src, size_t len) {
* Convert a u32 into a gdb-formatted hex string.
*
* @param dest Pointer to buffer to store output hex string characters.
+ * @param v Value to convert.
*/
static void IntToGdbHex(u8* dest, u32 v) {
for (int i = 0; i < 8; i += 2) {
diff --git a/src/core/hle/ipc.h b/src/core/hle/ipc.h
index bbaae8b79..cd9a5863d 100644
--- a/src/core/hle/ipc.h
+++ b/src/core/hle/ipc.h
@@ -72,8 +72,8 @@ union Header {
* through modifications and checks by the kernel.
* The translate parameters are described by headers generated with the IPC::*Desc functions.
*
- * @note While #normal_params_size is equivalent to the number of normal parameters,
- * #translate_params_size includes the size occupied by the translate parameters headers.
+ * @note While @p normal_params_size is equivalent to the number of normal parameters,
+ * @p translate_params_size includes the size occupied by the translate parameters headers.
*/
inline u32 MakeHeader(u16 command_id, unsigned int normal_params_size,
unsigned int translate_params_size) {
diff --git a/src/core/hle/kernel/server_session.h b/src/core/hle/kernel/server_session.h
index c088b9a19..761fc4781 100644
--- a/src/core/hle/kernel/server_session.h
+++ b/src/core/hle/kernel/server_session.h
@@ -4,6 +4,7 @@
#pragma once
+#include <memory>
#include <string>
#include "common/assert.h"
#include "common/common_types.h"
@@ -44,7 +45,8 @@ public:
/**
* Creates a pair of ServerSession and an associated ClientSession.
- * @param name Optional name of the ports
+ * @param name Optional name of the ports.
+ * @param hle_handler Optional HLE handler for this server session.
* @return The created session tuple
*/
static SessionPair CreateSessionPair(
diff --git a/src/core/hle/kernel/thread.h b/src/core/hle/kernel/thread.h
index c557a2279..6ab31c70b 100644
--- a/src/core/hle/kernel/thread.h
+++ b/src/core/hle/kernel/thread.h
@@ -11,7 +11,6 @@
#include <boost/container/flat_set.hpp>
#include "common/common_types.h"
#include "core/arm/arm_interface.h"
-#include "core/core.h"
#include "core/hle/kernel/kernel.h"
#include "core/hle/result.h"
diff --git a/src/core/hle/kernel/timer.cpp b/src/core/hle/kernel/timer.cpp
index c42003e9d..90e4b1f00 100644
--- a/src/core/hle/kernel/timer.cpp
+++ b/src/core/hle/kernel/timer.cpp
@@ -78,7 +78,7 @@ void Timer::WakeupAllWaitingThreads() {
}
void Timer::Signal(int cycles_late) {
- LOG_TRACE(Kernel, "Timer %08" PRIx64 " fired", timer_handle);
+ LOG_TRACE(Kernel, "Timer %u fired", GetObjectId());
// Resume all waiting threads
WakeupAllWaitingThreads();
diff --git a/src/core/hle/service/cam/cam.h b/src/core/hle/service/cam/cam.h
index f6bff8bc6..34a9c8479 100644
--- a/src/core/hle/service/cam/cam.h
+++ b/src/core/hle/service/cam/cam.h
@@ -518,7 +518,7 @@ void FlipImage(Service::Interface* self);
void SetDetailSize(Service::Interface* self);
/**
- * Sets camera resolution from preset resolution parameters. .
+ * Sets camera resolution from preset resolution parameters.
* Inputs:
* 0: 0x001F00C0
* 1: u8 selected camera
diff --git a/src/core/hle/service/gsp_gpu.cpp b/src/core/hle/service/gsp_gpu.cpp
index 1457518d4..a960778a7 100644
--- a/src/core/hle/service/gsp_gpu.cpp
+++ b/src/core/hle/service/gsp_gpu.cpp
@@ -4,6 +4,7 @@
#include "common/bit_field.h"
#include "common/microprofile.h"
+#include "core/core.h"
#include "core/hle/kernel/event.h"
#include "core/hle/kernel/shared_memory.h"
#include "core/hle/result.h"
@@ -118,10 +119,10 @@ static ResultCode WriteHWRegs(u32 base_address, u32 size_in_bytes, VAddr data_va
* Updates sequential GSP GPU hardware registers using parallel arrays of source data and masks.
* For each register, the value is updated only where the mask is high
*
- * @param base_address The address of the first register in the sequence
+ * @param base_address The address of the first register in the sequence
* @param size_in_bytes The number of registers to update (size of data)
- * @param data A pointer to the source data to use for updates
- * @param masks A pointer to the masks
+ * @param data_vaddr A virtual address to the source data to use for updates
+ * @param masks_vaddr A virtual address to the masks
* @return RESULT_SUCCESS if the parameters are valid, error code otherwise
*/
static ResultCode WriteHWRegsWithMask(u32 base_address, u32 size_in_bytes, VAddr data_vaddr,
@@ -280,6 +281,7 @@ ResultCode SetBufferSwap(u32 screen_id, const FrameBufferInfo& info) {
if (screen_id == 0) {
MicroProfileFlip();
+ Core::System::GetInstance().perf_stats.EndGameFrame();
}
return RESULT_SUCCESS;
diff --git a/src/core/hle/service/ldr_ro/cro_helper.h b/src/core/hle/service/ldr_ro/cro_helper.h
index 060d5a55f..3bc10dbdc 100644
--- a/src/core/hle/service/ldr_ro/cro_helper.h
+++ b/src/core/hle/service/ldr_ro/cro_helper.h
@@ -57,7 +57,7 @@ public:
* @param is_crs true if the module itself is the static module
* @returns ResultCode RESULT_SUCCESS on success, otherwise error code.
*/
- ResultCode Rebase(VAddr crs_address, u32 cro_size, VAddr data_segment_addresss,
+ ResultCode Rebase(VAddr crs_address, u32 cro_size, VAddr data_segment_address,
u32 data_segment_size, VAddr bss_segment_address, u32 bss_segment_size,
bool is_crs);
@@ -102,7 +102,7 @@ public:
/**
* Registers this module and adds it to the module list.
* @param crs_address the virtual address of the static module
- * @auto_link whether to register as an auto link module
+ * @param auto_link whether to register as an auto link module
*/
void Register(VAddr crs_address, bool auto_link);
diff --git a/src/core/hle/service/ldr_ro/ldr_ro.cpp b/src/core/hle/service/ldr_ro/ldr_ro.cpp
index 8d00a7577..7af76676b 100644
--- a/src/core/hle/service/ldr_ro/ldr_ro.cpp
+++ b/src/core/hle/service/ldr_ro/ldr_ro.cpp
@@ -6,6 +6,7 @@
#include "common/common_types.h"
#include "common/logging/log.h"
#include "core/arm/arm_interface.h"
+#include "core/core.h"
#include "core/hle/kernel/process.h"
#include "core/hle/kernel/vm_manager.h"
#include "core/hle/service/ldr_ro/cro_helper.h"
diff --git a/src/core/hw/gpu.cpp b/src/core/hw/gpu.cpp
index fa8c13d36..42809c731 100644
--- a/src/core/hw/gpu.cpp
+++ b/src/core/hw/gpu.cpp
@@ -8,17 +8,13 @@
#include "common/color.h"
#include "common/common_types.h"
#include "common/logging/log.h"
-#include "common/math_util.h"
#include "common/microprofile.h"
-#include "common/thread.h"
-#include "common/timer.h"
#include "common/vector_math.h"
#include "core/core_timing.h"
#include "core/hle/service/gsp_gpu.h"
#include "core/hw/gpu.h"
#include "core/hw/hw.h"
#include "core/memory.h"
-#include "core/settings.h"
#include "core/tracer/recorder.h"
#include "video_core/command_processor.h"
#include "video_core/debug_utils/debug_utils.h"
@@ -32,19 +28,9 @@ namespace GPU {
Regs g_regs;
/// 268MHz CPU clocks / 60Hz frames per second
-const u64 frame_ticks = BASE_CLOCK_RATE_ARM11 / 60;
+const u64 frame_ticks = BASE_CLOCK_RATE_ARM11 / SCREEN_REFRESH_RATE;
/// Event id for CoreTiming
static int vblank_event;
-/// Total number of frames drawn
-static u64 frame_count;
-/// Start clock for frame limiter
-static u32 time_point;
-/// Total delay caused by slow frames
-static float time_delay;
-constexpr float FIXED_FRAME_TIME = 1000.0f / 60;
-// Max lag caused by slow frames. Can be adjusted to compensate for too many slow frames. Higher
-// values increases time needed to limit frame rate after spikes
-constexpr float MAX_LAG_TIME = 18;
template <typename T>
inline void Read(T& var, const u32 raw_addr) {
@@ -522,24 +508,8 @@ template void Write<u32>(u32 addr, const u32 data);
template void Write<u16>(u32 addr, const u16 data);
template void Write<u8>(u32 addr, const u8 data);
-static void FrameLimiter() {
- time_delay += FIXED_FRAME_TIME;
- time_delay = MathUtil::Clamp(time_delay, -MAX_LAG_TIME, MAX_LAG_TIME);
- s32 desired_time = static_cast<s32>(time_delay);
- s32 elapsed_time = static_cast<s32>(Common::Timer::GetTimeMs() - time_point);
-
- if (elapsed_time < desired_time) {
- Common::SleepCurrentThread(desired_time - elapsed_time);
- }
-
- u32 frame_time = Common::Timer::GetTimeMs() - time_point;
-
- time_delay -= frame_time;
-}
-
/// Update hardware
static void VBlankCallback(u64 userdata, int cycles_late) {
- frame_count++;
VideoCore::g_renderer->SwapBuffers();
// Signal to GSP that GPU interrupt has occurred
@@ -550,12 +520,6 @@ static void VBlankCallback(u64 userdata, int cycles_late) {
Service::GSP::SignalInterrupt(Service::GSP::InterruptId::PDC0);
Service::GSP::SignalInterrupt(Service::GSP::InterruptId::PDC1);
- if (!Settings::values.use_vsync && Settings::values.toggle_framelimit) {
- FrameLimiter();
- }
-
- time_point = Common::Timer::GetTimeMs();
-
// Reschedule recurrent event
CoreTiming::ScheduleEvent(frame_ticks - cycles_late, vblank_event);
}
@@ -590,9 +554,6 @@ void Init() {
framebuffer_sub.color_format.Assign(Regs::PixelFormat::RGB8);
framebuffer_sub.active_fb = 0;
- frame_count = 0;
- time_point = Common::Timer::GetTimeMs();
-
vblank_event = CoreTiming::RegisterEvent("GPU::VBlankCallback", VBlankCallback);
CoreTiming::ScheduleEvent(frame_ticks, vblank_event);
diff --git a/src/core/hw/gpu.h b/src/core/hw/gpu.h
index d53381216..bdd997b2a 100644
--- a/src/core/hw/gpu.h
+++ b/src/core/hw/gpu.h
@@ -13,6 +13,8 @@
namespace GPU {
+constexpr float SCREEN_REFRESH_RATE = 60;
+
// Returns index corresponding to the Regs member labeled by field_name
// TODO: Due to Visual studio bug 209229, offsetof does not return constant expressions
// when used with array elements (e.g. GPU_REG_INDEX(memory_fill_config[0])).
diff --git a/src/core/loader/loader.h b/src/core/loader/loader.h
index a6c2a745f..1d80766ae 100644
--- a/src/core/loader/loader.h
+++ b/src/core/loader/loader.h
@@ -54,7 +54,7 @@ FileType IdentifyFile(const std::string& file_name);
* @return FileType of file. Note: this will return FileType::Unknown if it is unable to determine
* a filetype, and will never return FileType::Error.
*/
-FileType GuessFromExtension(const std::string& extension_);
+FileType GuessFromExtension(const std::string& extension);
/**
* Convert a FileType into a string which can be displayed to the user.
diff --git a/src/core/perf_stats.cpp b/src/core/perf_stats.cpp
new file mode 100644
index 000000000..2cdfb9ded
--- /dev/null
+++ b/src/core/perf_stats.cpp
@@ -0,0 +1,105 @@
+// Copyright 2017 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <chrono>
+#include <mutex>
+#include <thread>
+#include "common/math_util.h"
+#include "core/hw/gpu.h"
+#include "core/perf_stats.h"
+#include "core/settings.h"
+
+using namespace std::chrono_literals;
+using DoubleSecs = std::chrono::duration<double, std::chrono::seconds::period>;
+using std::chrono::duration_cast;
+using std::chrono::microseconds;
+
+namespace Core {
+
+void PerfStats::BeginSystemFrame() {
+ std::lock_guard<std::mutex> lock(object_mutex);
+
+ frame_begin = Clock::now();
+}
+
+void PerfStats::EndSystemFrame() {
+ std::lock_guard<std::mutex> lock(object_mutex);
+
+ auto frame_end = Clock::now();
+ accumulated_frametime += frame_end - frame_begin;
+ system_frames += 1;
+
+ previous_frame_length = frame_end - previous_frame_end;
+ previous_frame_end = frame_end;
+}
+
+void PerfStats::EndGameFrame() {
+ std::lock_guard<std::mutex> lock(object_mutex);
+
+ game_frames += 1;
+}
+
+PerfStats::Results PerfStats::GetAndResetStats(u64 current_system_time_us) {
+ std::lock_guard<std::mutex> lock(object_mutex);
+
+ auto now = Clock::now();
+ // Walltime elapsed since stats were reset
+ auto interval = duration_cast<DoubleSecs>(now - reset_point).count();
+
+ auto system_us_per_second =
+ static_cast<double>(current_system_time_us - reset_point_system_us) / interval;
+
+ Results results{};
+ results.system_fps = static_cast<double>(system_frames) / interval;
+ results.game_fps = static_cast<double>(game_frames) / interval;
+ results.frametime = duration_cast<DoubleSecs>(accumulated_frametime).count() /
+ static_cast<double>(system_frames);
+ results.emulation_speed = system_us_per_second / 1'000'000.0;
+
+ // Reset counters
+ reset_point = now;
+ reset_point_system_us = current_system_time_us;
+ accumulated_frametime = Clock::duration::zero();
+ system_frames = 0;
+ game_frames = 0;
+
+ return results;
+}
+
+double PerfStats::GetLastFrameTimeScale() {
+ std::lock_guard<std::mutex> lock(object_mutex);
+
+ constexpr double FRAME_LENGTH = 1.0 / GPU::SCREEN_REFRESH_RATE;
+ return duration_cast<DoubleSecs>(previous_frame_length).count() / FRAME_LENGTH;
+}
+
+void FrameLimiter::DoFrameLimiting(u64 current_system_time_us) {
+ // Max lag caused by slow frames. Can be adjusted to compensate for too many slow frames. Higher
+ // values increase the time needed to recover and limit framerate again after spikes.
+ constexpr microseconds MAX_LAG_TIME_US = 25ms;
+
+ if (!Settings::values.toggle_framelimit) {
+ return;
+ }
+
+ auto now = Clock::now();
+
+ frame_limiting_delta_err += microseconds(current_system_time_us - previous_system_time_us);
+ frame_limiting_delta_err -= duration_cast<microseconds>(now - previous_walltime);
+ frame_limiting_delta_err =
+ MathUtil::Clamp(frame_limiting_delta_err, -MAX_LAG_TIME_US, MAX_LAG_TIME_US);
+
+ if (frame_limiting_delta_err > microseconds::zero()) {
+ std::this_thread::sleep_for(frame_limiting_delta_err);
+
+ auto now_after_sleep = Clock::now();
+ frame_limiting_delta_err -= duration_cast<microseconds>(now_after_sleep - now);
+ now = now_after_sleep;
+ }
+
+ previous_system_time_us = current_system_time_us;
+ previous_walltime = now;
+}
+
+} // namespace Core
diff --git a/src/core/perf_stats.h b/src/core/perf_stats.h
new file mode 100644
index 000000000..362b205c8
--- /dev/null
+++ b/src/core/perf_stats.h
@@ -0,0 +1,83 @@
+// Copyright 2017 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <chrono>
+#include <mutex>
+#include "common/common_types.h"
+
+namespace Core {
+
+/**
+ * Class to manage and query performance/timing statistics. All public functions of this class are
+ * thread-safe unless stated otherwise.
+ */
+class PerfStats {
+public:
+ using Clock = std::chrono::high_resolution_clock;
+
+ struct Results {
+ /// System FPS (LCD VBlanks) in Hz
+ double system_fps;
+ /// Game FPS (GSP frame submissions) in Hz
+ double game_fps;
+ /// Walltime per system frame, in seconds, excluding any waits
+ double frametime;
+ /// Ratio of walltime / emulated time elapsed
+ double emulation_speed;
+ };
+
+ void BeginSystemFrame();
+ void EndSystemFrame();
+ void EndGameFrame();
+
+ Results GetAndResetStats(u64 current_system_time_us);
+
+ /**
+ * Gets the ratio between walltime and the emulated time of the previous system frame. This is
+ * useful for scaling inputs or outputs moving between the two time domains.
+ */
+ double GetLastFrameTimeScale();
+
+private:
+ std::mutex object_mutex;
+
+ /// Point when the cumulative counters were reset
+ Clock::time_point reset_point = Clock::now();
+ /// System time when the cumulative counters were reset
+ u64 reset_point_system_us = 0;
+
+ /// Cumulative duration (excluding v-sync/frame-limiting) of frames since last reset
+ Clock::duration accumulated_frametime = Clock::duration::zero();
+ /// Cumulative number of system frames (LCD VBlanks) presented since last reset
+ u32 system_frames = 0;
+ /// Cumulative number of game frames (GSP frame submissions) since last reset
+ u32 game_frames = 0;
+
+ /// Point when the previous system frame ended
+ Clock::time_point previous_frame_end = reset_point;
+ /// Point when the current system frame began
+ Clock::time_point frame_begin = reset_point;
+ /// Total visible duration (including frame-limiting, etc.) of the previous system frame
+ Clock::duration previous_frame_length = Clock::duration::zero();
+};
+
+class FrameLimiter {
+public:
+ using Clock = std::chrono::high_resolution_clock;
+
+ void DoFrameLimiting(u64 current_system_time_us);
+
+private:
+ /// Emulated system time (in microseconds) at the last limiter invocation
+ u64 previous_system_time_us = 0;
+ /// Walltime at the last limiter invocation
+ Clock::time_point previous_walltime = Clock::now();
+
+ /// Accumulated difference between walltime and emulated time
+ std::chrono::microseconds frame_limiting_delta_err{0};
+};
+
+} // namespace Core
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