Struct os::task::id::TaskUserRes

pub struct TaskUserRes {
    pub tid: usize,
    pub ustack_base: usize,
    pub process: Weak<ProcessControlBlock>,
}

User Resource for a task

Fields

tid: usize

task id

ustack_base: usize

user stack base

process: Weak<ProcessControlBlock>

process belongs to

Implementations

impl TaskUserRes

pub fn new(
    process: Arc<ProcessControlBlock>,
    ustack_base: usize,
    alloc_user_res: bool
) -> Self

Create a new TaskUserRes (Task User Resource)

pub fn alloc_user_res(&self)

Allocate user resource for a task

fn dealloc_user_res(&self)

Deallocate user resource for a task

pub fn alloc_tid(&mut self)

alloc task id

pub fn dealloc_tid(&self)

dealloc task id

pub fn trap_cx_user_va(&self) -> usize

The bottom usr vaddr (low addr) of the trap context for a task with tid

pub fn trap_cx_ppn(&self) -> PhysPageNum

The physical page number(ppn) of the trap context for a task with tid

pub fn ustack_base(&self) -> usize

the bottom addr (low addr) of the user stack for a task

pub fn ustack_top(&self) -> usize

the top addr (high addr) of the user stack for a task

Trait Implementations

impl Drop for TaskUserRes

fn drop(&mut self)

Executes the destructor for this type.