Designs

Birds View - Which memories are being dealt?

stateDiagram
    [*] --> RAM
    [*] --> Dedicated_I/O_region
    [*] --> Hard_Disk

Heap Abstraction

The Heap has been divided into 2 sections.
A part dedicated for the Kernel heap allocations and a part dedicated for loading user programs
Each user program can grow their heap.

The Page Manager uses descriptors to keep track of allocated and free pages.
The Page manager can help you allocate or deallocate a cotiguous group of pages. Each Page is 4096 bytes large.
Memory initialization is the process of demarcating the heap into balnced Descriptors and Pages.

Descriptor Ordering

Wrong orders

Paging Process

graph LR
    page_request --> allocation
    subgraph allocation
        start -->|Request x amount of pages| Desciptor_scanner
        Desciptor_scanner -->|looks for x contiguous empty descriptors| C1{did it find a block?}

        C1 -->|Yes| Populator
        C1 -->|No| Return_exception

        Populator -->|updates the descriptors| Success
        Success -->|Returns the address of the first Page| End
    end