https://github.com/gmelodie/cruzos

My own OS written in Rust
https://github.com/gmelodie/cruzos

Last synced: 25 days ago
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My own OS written in Rust

• Host: GitHub
• URL: https://github.com/gmelodie/cruzos
• Owner: gmelodie
• License: mit
• Created: 2024-04-01T17:12:30.000Z (7 months ago)
• Default Branch: main
• Last Pushed: 2024-05-28T15:55:16.000Z (5 months ago)
• Last Synced: 2024-05-29T07:07:25.344Z (5 months ago)
• Language: Rust
• Size: 103 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# cruzOS

My own OS written in Rust

```bash

sudo apt install qemu-kvm

rustup toolchain install nightly

rustup override set nightly

cargo install bootimage

rustup component add llvm-tools-preview

```

## Memory allocators

- **Bump Allocator:** grows in the same direction once all allocated blocks are deallocated, reset memory.

- **Linked List Allocator:** freed blocks with at least 16 bytes are put in a linked list. Reutilizes suitable blocks. (obs: if you deallocate 8 bytes, those are lots until all references are deallocated and memory is reset like in bump allocator)

## Async

There is a naïve task scheduler at `/src/task/simple_executor.rs`. Tasks can be spawned after executor starts `run`ing. Tasks are not processes. They don't have their own contexes or memory.

## Processes

Currently implementing context switching.

## TODOs

- VGA printing queue with daemon job. If can't lock vga, add it to queue.

- UEFI over BIOS

- USB

- HDMI or DisplayPort over VGA

- Process scheduling (requirements??)

    - context switching

    - MLFQ with configurable parameters