Module os::task::processor

Implementation of Processor and Intersection of control flow

Here, the continuous operation of user apps in CPU is maintained, the current running state of CPU is recorded, and the replacement and transfer of control flow of different applications are executed.

Structs

PROCESSOR

Processor

Processor management structure

Functions

current_task

Get a copy of the current task

current_trap_cx

Get the mutable reference to trap context of current task

current_user_token

Get the current user token(addr of page table)

run_tasks

The main part of process execution and scheduling Loop fetch_task to get the process that needs to run, and switch the process through __switch

schedule

Return to idle control flow for new scheduling

take_current_task

Get current task through take, leaving a None in its place