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// Copyright 2024-2025, Amlal El Mahrouss (amlal@nekernel.org)
// Licensed under the Apache License, Version 2.0 (see LICENSE file)
// Official repository: https://github.com/nekernel-org/nekernel
#ifndef KERNELKIT_TIMER_H
#define KERNELKIT_TIMER_H
#include <ArchKit/ArchKit.h>
#include <KernelKit/KPC.h>
namespace Kernel {
class SoftwareTimer;
class HardwareTimer;
class ITimer;
inline constexpr Int16 kTimeUnit = 1000;
class ITimer {
public:
/// @brief Default constructor
explicit ITimer() = default;
virtual ~ITimer() = default;
public:
NE_COPY_DEFAULT(ITimer)
public:
virtual BOOL Wait();
};
class SoftwareTimer final : public ITimer {
public:
explicit SoftwareTimer(Int64 seconds);
~SoftwareTimer() override;
public:
NE_COPY_DEFAULT(SoftwareTimer)
public:
BOOL Wait() override;
private:
UIntPtr* fDigitalTimer{nullptr};
Int64 fWaitFor{0L};
};
class HardwareTimer final : public ITimer {
public:
explicit HardwareTimer(UInt64 seconds);
~HardwareTimer() override;
public:
NE_COPY_DEFAULT(HardwareTimer)
public:
BOOL Wait() override;
private:
volatile UInt8* fDigitalTimer{nullptr};
Int64 fWaitFor{0};
};
inline constexpr UInt64 rtl_microseconds(UInt64 time) {
if (time < 1) return 0;
return time / kTimeUnit;
}
inline constexpr UInt64 rtl_milliseconds(UInt64 time) {
if (time < 1) return 0;
return time;
}
} // namespace Kernel
#endif // !KERNELKIT_TIMER_H
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