1 files changed, 82 insertions, 0 deletions
diff --git a/src/core/hle/service/glue/time/alarm_worker.cpp b/src/core/hle/service/glue/time/alarm_worker.cpp
new file mode 100644
index 000000000..f549ed00a
--- /dev/null
+++ b/src/core/hle/service/glue/time/alarm_worker.cpp
@@ -0,0 +1,82 @@
+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "core/core.h"
+#include "core/core_timing.h"
+#include "core/hle/kernel/svc.h"
+#include "core/hle/service/glue/time/alarm_worker.h"
+#include "core/hle/service/psc/time/service_manager.h"
+#include "core/hle/service/sm/sm.h"
+
+namespace Service::Glue::Time {
+
+AlarmWorker::AlarmWorker(Core::System& system, StandardSteadyClockResource& steady_clock_resource)
+    : m_system{system}, m_ctx{system, "Glue:AlarmWorker"}, m_steady_clock_resource{
+                                                               steady_clock_resource} {}
+
+AlarmWorker::~AlarmWorker() {
+    m_system.CoreTiming().UnscheduleEvent(m_timer_timing_event);
+
+    m_ctx.CloseEvent(m_timer_event);
+}
+
+void AlarmWorker::Initialize(std::shared_ptr<Service::PSC::Time::ServiceManager> time_m) {
+    m_time_m = std::move(time_m);
+
+    m_timer_event = m_ctx.CreateEvent("Glue:AlarmWorker:TimerEvent");
+    m_timer_timing_event = Core::Timing::CreateEvent(
+        "Glue:AlarmWorker::AlarmTimer",
+        [this](s64 time,
+               std::chrono::nanoseconds ns_late) -> std::optional<std::chrono::nanoseconds> {
+            m_timer_event->Signal();
+            return std::nullopt;
+        });
+
+    AttachToClosestAlarmEvent();
+}
+
+bool AlarmWorker::GetClosestAlarmInfo(Service::PSC::Time::AlarmInfo& out_alarm_info,
+                                      s64& out_time) {
+    bool is_valid{};
+    Service::PSC::Time::AlarmInfo alarm_info{};
+    s64 closest_time{};
+
+    auto res = m_time_m->GetClosestAlarmInfo(is_valid, alarm_info, closest_time);
+    ASSERT(res == ResultSuccess);
+
+    if (is_valid) {
+        out_alarm_info = alarm_info;
+        out_time = closest_time;
+    }
+
+    return is_valid;
+}
+
+void AlarmWorker::OnPowerStateChanged() {
+    Service::PSC::Time::AlarmInfo closest_alarm_info{};
+    s64 closest_time{};
+    if (!GetClosestAlarmInfo(closest_alarm_info, closest_time)) {
+        m_system.CoreTiming().UnscheduleEvent(m_timer_timing_event);
+        m_timer_event->Clear();
+        return;
+    }
+
+    if (closest_alarm_info.alert_time <= closest_time) {
+        m_time_m->CheckAndSignalAlarms();
+    } else {
+        auto next_time{closest_alarm_info.alert_time - closest_time};
+
+        m_system.CoreTiming().UnscheduleEvent(m_timer_timing_event);
+        m_timer_event->Clear();
+
+        m_system.CoreTiming().ScheduleEvent(std::chrono::nanoseconds(next_time),
+                                            m_timer_timing_event);
+    }
+}
+
+Result AlarmWorker::AttachToClosestAlarmEvent() {
+    m_time_m->GetClosestAlarmUpdatedEvent(&m_event);
+    R_SUCCEED();
+}
+
+} // namespace Service::Glue::Time