Add clock support and sleep

Amjad50 / Emerald

An Operating System in Rust

https://amjad.alsharafi.dev/Emerald

MIT License

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Closed Amjad50 closed 9 months ago

Amjad50 commented 9 months ago

need to do 2 things:

use the current HPET (for calibration) along with low overhear CPU instructions to get clock speed, to track the time on the kernel.
we can use RTC to get the start time
implement userspace sleep with that.

Amjad50 commented 9 months ago

The way we have implemented it is, ClockDevice which is a trait that we can add to any device.

currently, we only have 2, HPET, and TSC, HPET will be used to calibrate TSC, and we will continue to use it as the main thing.

Currently, we have sleep and get_time syscalls that use these functionalities.

Look at the documentation for more details.