1 files changed, 43 insertions, 0 deletions

diff --git a/src/core/hle/service/time/system_clock_context_update_callback.h b/src/core/hle/service/time/system_clock_context_update_callback.h
new file mode 100644
index 000000000..6260de6c3
--- /dev/null
+++ b/src/core/hle/service/time/system_clock_context_update_callback.h
@@ -0,0 +1,43 @@
+// Copyright 2019 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <vector>
+
+#include "core/hle/service/time/clock_types.h"
+
+namespace Kernel {
+class WritableEvent;
+}
+
+namespace Service::Time::Clock {
+
+// Parts of this implementation were based on Ryujinx (https://github.com/Ryujinx/Ryujinx/pull/783).
+// This code was released under public domain.
+
+class SystemClockContextUpdateCallback {
+public:
+    SystemClockContextUpdateCallback();
+    ~SystemClockContextUpdateCallback();
+
+    bool NeedUpdate(const SystemClockContext& value) const;
+
+    void RegisterOperationEvent(std::shared_ptr<Kernel::WritableEvent>&& writable_event);
+
+    void BroadcastOperationEvent();
+
+    ResultCode Update(const SystemClockContext& value);
+
+protected:
+    virtual ResultCode Update();
+
+    SystemClockContext context{};
+
+private:
+    bool has_context{};
+    std::vector<std::shared_ptr<Kernel::WritableEvent>> operation_event_list;
+};
+
+} // namespace Service::Time::Clock