Development

[assembler-0]

Summary by CodeRabbit

• New Features

  • Added a configurable timer frequency for the system clock, now set to 5000 Hz by default.

• Improvements

  • Updated scheduler behavior to assign shorter time slices to higher priority processes for improved responsiveness.
  • Increased the frequency of scheduler maintenance operations, resulting in more frequent priority boosting.

• Other Changes

  • Minor code cleanup and documentation adjustments with no impact on functionality.

[coderabbitai]

Caution

Review failed

The pull request is closed.

Walkthrough

This update introduces changes to kernel timer configuration and process scheduling. The PIT frequency is now defined by a macro and set to 5000 Hz, with related code updated for configurability. The multi-level feedback queue scheduler's quantum scaling is reversed, assigning shorter time slices to higher priorities, and the boosting interval is reduced.

Changes

Files	Change Summary
Kernel/Core/Kernel.c	Removed a single comment line before the KernelMain function.
Kernel/Drivers/Pic.c, Kernel/Drivers/Pic.h	Replaced hardcoded PIT divisor with macro-based calculation; added PIT_FREQUENCY_HZ macro and PitInstall() prototype.
Kernel/Process/Process.c	Reversed MLFQ quantum scaling (shorter slices for higher priorities); added blank lines after process slot clearing.
Kernel/Process/Process.h	Changed scheduler boost interval constant from 1000 to 100 ticks.

Sequence Diagram(s)

sequenceDiagram
    participant Scheduler
    participant Process
    participant Timer(PIT)
    
    Timer(PIT)->>Scheduler: Timer interrupt (every 1/PIT_FREQUENCY_HZ)
    Scheduler->>Process: Assign time quantum (QUANTUM_BASE / 2^priority)
    Note right of Scheduler: Higher priority = shorter quantum
    Scheduler->>Scheduler: Boost all processes every 100 ticks

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Possibly related PRs

• Development #23: Introduces the multi-level feedback queue scheduler framework, directly relating to the quantum scaling and boosting interval changes in this PR.
• Development #16: Removes debug print statements from the KernelMain function, similar to this PR's removal of a comment in the same function area.

Poem

The scheduler hops with nimble delight,
Shorter quanta for the queues of might!
The PIT now ticks at a rapid pace,
Boosting all processes in a race.
With macros and tweaks, the kernel feels new—
A bunny’s leap, swift and true!
🐇✨

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📥 Commits

Reviewing files that changed from the base of the PR and between 6811f60 and 348b84a.

📒 Files selected for processing (5)

• Kernel/Core/Kernel.c (0 hunks)
• Kernel/Drivers/Pic.c (1 hunks)
• Kernel/Drivers/Pic.h (1 hunks)
• Kernel/Process/Process.c (2 hunks)
• Kernel/Process/Process.h (1 hunks)

✨ Finishing Touches

• 📝 Generate Docstrings

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