1 files changed, 83 insertions, 0 deletions
diff --git a/dev/kernel/KernelKit/Timer.h b/dev/kernel/KernelKit/Timer.h
new file mode 100644
index 00000000..abca5352
--- /dev/null
+++ b/dev/kernel/KernelKit/Timer.h
@@ -0,0 +1,83 @@
+/* -------------------------------------------
+
+	Copyright (C) 2024-2025, Amlal EL Mahrouss, all rights reserved.
+
+------------------------------------------- */
+
+#pragma once
+
+#include <ArchKit/ArchKit.h>
+#include <KernelKit/LPC.h>
+
+namespace NeOS
+{
+	class SoftwareTimer;
+	class TimerInterface;
+
+	inline constexpr Int16 kTimeUnit = 1000;
+
+	class TimerInterface
+	{
+	public:
+		/// @brief Default constructor
+		explicit TimerInterface() = default;
+		virtual ~TimerInterface() = default;
+
+	public:
+		NE_COPY_DEFAULT(TimerInterface);
+
+	public:
+		virtual BOOL Wait() noexcept;
+	};
+
+	class SoftwareTimer final : public TimerInterface
+	{
+	public:
+		explicit SoftwareTimer(Int64 seconds);
+		~SoftwareTimer() override;
+
+	public:
+		NE_COPY_DEFAULT(SoftwareTimer);
+
+	public:
+		BOOL Wait() noexcept override;
+
+	private:
+		IntPtr* fDigitalTimer{nullptr};
+		Int64	fWaitFor{0};
+	};
+
+	class HardwareTimer final : public TimerInterface
+	{
+	public:
+		explicit HardwareTimer(Int64 seconds);
+		~HardwareTimer() override;
+
+	public:
+		NE_COPY_DEFAULT(HardwareTimer);
+
+	public:
+		BOOL Wait() noexcept override;
+
+	private:
+		IntPtr* fDigitalTimer{nullptr};
+		Int64	fWaitFor{0};
+	};
+
+	inline Int64 rtl_ms(Int64 time)
+	{
+		if (time < 0)
+			return 0;
+
+		// TODO: nanoseconds maybe?
+		return kTimeUnit * kTimeUnit * time;
+	}
+
+	inline Int64 rtl_seconds(Int64 time)
+	{
+		if (time < 0)
+			return 0;
+
+		return kTimeUnit * rtl_ms(time);
+	}
+} // namespace NeOS