3 files changed, 26 insertions, 45 deletions

diff --git a/src/core/hle/service/hid/hid.cpp b/src/core/hle/service/hid/hid.cpp
index 78efffc50..88fcd53ec 100644
--- a/src/core/hle/service/hid/hid.cpp
+++ b/src/core/hle/service/hid/hid.cpp
@@ -74,26 +74,35 @@ IAppletResource::IAppletResource(Core::System& system_,
     // Register update callbacks
     pad_update_event = Core::Timing::CreateEvent(
         "HID::UpdatePadCallback",
-        [this](std::uintptr_t user_data, std::chrono::nanoseconds ns_late) {
+        [this](std::uintptr_t user_data, s64 time,
+               std::chrono::nanoseconds ns_late) -> std::optional<std::chrono::nanoseconds> {
             const auto guard = LockService();
             UpdateControllers(user_data, ns_late);
+            return std::nullopt;
         });
     mouse_keyboard_update_event = Core::Timing::CreateEvent(
         "HID::UpdateMouseKeyboardCallback",
-        [this](std::uintptr_t user_data, std::chrono::nanoseconds ns_late) {
+        [this](std::uintptr_t user_data, s64 time,
+               std::chrono::nanoseconds ns_late) -> std::optional<std::chrono::nanoseconds> {
             const auto guard = LockService();
             UpdateMouseKeyboard(user_data, ns_late);
+            return std::nullopt;
         });
     motion_update_event = Core::Timing::CreateEvent(
         "HID::UpdateMotionCallback",
-        [this](std::uintptr_t user_data, std::chrono::nanoseconds ns_late) {
+        [this](std::uintptr_t user_data, s64 time,
+               std::chrono::nanoseconds ns_late) -> std::optional<std::chrono::nanoseconds> {
             const auto guard = LockService();
             UpdateMotion(user_data, ns_late);
+            return std::nullopt;
         });
 
-    system.CoreTiming().ScheduleEvent(pad_update_ns, pad_update_event);
-    system.CoreTiming().ScheduleEvent(mouse_keyboard_update_ns, mouse_keyboard_update_event);
-    system.CoreTiming().ScheduleEvent(motion_update_ns, motion_update_event);
+    system.CoreTiming().ScheduleLoopingEvent(std::chrono::nanoseconds(0), pad_update_ns,
+                                             pad_update_event);
+    system.CoreTiming().ScheduleLoopingEvent(std::chrono::nanoseconds(0), mouse_keyboard_update_ns,
+                                             mouse_keyboard_update_event);
+    system.CoreTiming().ScheduleLoopingEvent(std::chrono::nanoseconds(0), motion_update_ns,
+                                             motion_update_event);
 
     system.HIDCore().ReloadInputDevices();
 }
@@ -135,13 +144,6 @@ void IAppletResource::UpdateControllers(std::uintptr_t user_data,
         }
         controller->OnUpdate(core_timing);
     }
-
-    // If ns_late is higher than the update rate ignore the delay
-    if (ns_late > pad_update_ns) {
-        ns_late = {};
-    }
-
-    core_timing.ScheduleEvent(pad_update_ns - ns_late, pad_update_event);
 }
 
 void IAppletResource::UpdateMouseKeyboard(std::uintptr_t user_data,
@@ -150,26 +152,12 @@ void IAppletResource::UpdateMouseKeyboard(std::uintptr_t user_data,
 
     controllers[static_cast<size_t>(HidController::Mouse)]->OnUpdate(core_timing);
     controllers[static_cast<size_t>(HidController::Keyboard)]->OnUpdate(core_timing);
-
-    // If ns_late is higher than the update rate ignore the delay
-    if (ns_late > mouse_keyboard_update_ns) {
-        ns_late = {};
-    }
-
-    core_timing.ScheduleEvent(mouse_keyboard_update_ns - ns_late, mouse_keyboard_update_event);
 }
 
 void IAppletResource::UpdateMotion(std::uintptr_t user_data, std::chrono::nanoseconds ns_late) {
     auto& core_timing = system.CoreTiming();
 
     controllers[static_cast<size_t>(HidController::NPad)]->OnMotionUpdate(core_timing);
-
-    // If ns_late is higher than the update rate ignore the delay
-    if (ns_late > motion_update_ns) {
-        ns_late = {};
-    }
-
-    core_timing.ScheduleEvent(motion_update_ns - ns_late, motion_update_event);
 }
 
 class IActiveVibrationDeviceList final : public ServiceFramework<IActiveVibrationDeviceList> {
diff --git a/src/core/hle/service/hid/hidbus.cpp b/src/core/hle/service/hid/hidbus.cpp
index fa6153b4c..5e20e6830 100644
--- a/src/core/hle/service/hid/hidbus.cpp
+++ b/src/core/hle/service/hid/hidbus.cpp
@@ -50,12 +50,15 @@ HidBus::HidBus(Core::System& system_)
     // Register update callbacks
     hidbus_update_event = Core::Timing::CreateEvent(
         "Hidbus::UpdateCallback",
-        [this](std::uintptr_t user_data, std::chrono::nanoseconds ns_late) {
+        [this](std::uintptr_t user_data, s64 time,
+               std::chrono::nanoseconds ns_late) -> std::optional<std::chrono::nanoseconds> {
             const auto guard = LockService();
             UpdateHidbus(user_data, ns_late);
+            return std::nullopt;
         });
 
-    system_.CoreTiming().ScheduleEvent(hidbus_update_ns, hidbus_update_event);
+    system_.CoreTiming().ScheduleLoopingEvent(std::chrono::nanoseconds(0), hidbus_update_ns,
+                                              hidbus_update_event);
 }
 
 HidBus::~HidBus() {
@@ -63,8 +66,6 @@ HidBus::~HidBus() {
 }
 
 void HidBus::UpdateHidbus(std::uintptr_t user_data, std::chrono::nanoseconds ns_late) {
-    auto& core_timing = system.CoreTiming();
-
     if (is_hidbus_enabled) {
         for (std::size_t i = 0; i < devices.size(); ++i) {
             if (!devices[i].is_device_initializated) {
@@ -82,13 +83,6 @@ void HidBus::UpdateHidbus(std::uintptr_t user_data, std::chrono::nanoseconds ns_
                         sizeof(HidbusStatusManagerEntry));
         }
     }
-
-    // If ns_late is higher than the update rate ignore the delay
-    if (ns_late > hidbus_update_ns) {
-        ns_late = {};
-    }
-
-    core_timing.ScheduleEvent(hidbus_update_ns - ns_late, hidbus_update_event);
 }
 
 std::optional<std::size_t> HidBus::GetDeviceIndexFromHandle(BusHandle handle) const {
diff --git a/src/core/hle/service/nvflinger/nvflinger.cpp b/src/core/hle/service/nvflinger/nvflinger.cpp
index 2b2985a2d..600b19b3f 100644
--- a/src/core/hle/service/nvflinger/nvflinger.cpp
+++ b/src/core/hle/service/nvflinger/nvflinger.cpp
@@ -67,21 +67,20 @@ NVFlinger::NVFlinger(Core::System& system_, HosBinderDriverServer& hos_binder_dr
 
     // Schedule the screen composition events
     composition_event = Core::Timing::CreateEvent(
-        "ScreenComposition", [this](std::uintptr_t, std::chrono::nanoseconds ns_late) {
+        "ScreenComposition",
+        [this](std::uintptr_t, s64 time,
+               std::chrono::nanoseconds ns_late) -> std::optional<std::chrono::nanoseconds> {
             const auto lock_guard = Lock();
             Compose();
 
-            const auto ticks = std::chrono::nanoseconds{GetNextTicks()};
-            const auto ticks_delta = ticks - ns_late;
-            const auto future_ns = std::max(std::chrono::nanoseconds::zero(), ticks_delta);
-
-            this->system.CoreTiming().ScheduleEvent(future_ns, composition_event);
+            return std::chrono::nanoseconds(GetNextTicks()) - ns_late;
         });
 
     if (system.IsMulticore()) {
         vsync_thread = std::jthread([this](std::stop_token token) { SplitVSync(token); });
     } else {
-        system.CoreTiming().ScheduleEvent(frame_ns, composition_event);
+        system.CoreTiming().ScheduleLoopingEvent(std::chrono::nanoseconds(0), frame_ns,
+                                                 composition_event);
     }
 }