Struct os::task::TASK_MANAGER

pub struct TASK_MANAGER {
    __private_field: (),
}

a TaskManager global instance through lazy_static!

Fields

__private_field: ()

Methods from Deref<Target = TaskManager>

fn run_first_task(&self) -> !

Run the first task in task list.

Generally, the first task in task list is an idle task (we call it zero process later). But in ch4, we load apps statically, so the first task is a real app.

fn mark_current_suspended(&self)

Change the status of current Running task into Ready.

fn mark_current_exited(&self)

Change the status of current Running task into Exited.

fn find_next_task(&self) -> Option<usize>

Find next task to run and return task id.

In this case, we only return the first Ready task in task list.

fn get_current_token(&self) -> usize

Get the current ‘Running’ task’s token.

fn get_current_trap_cx(&self) -> &'static mut TrapContext

Get the current ‘Running’ task’s trap contexts.

pub fn change_current_program_brk(&self, size: i32) -> Option<usize>

Change the current ‘Running’ task’s program break

fn run_next_task(&self)

Switch current Running task to the task we have found, or there is no Ready task and we can exit with all applications completed

Trait Implementations

impl Deref for TASK_MANAGER

type Target = TaskManager

The resulting type after dereferencing.

fn deref(&self) -> &TaskManager

Dereferences the value.

impl LazyStatic for TASK_MANAGER