Struct EnvData

#[repr(C)]
pub struct EnvData {
    pub trap_frame: TrapFrame,
    _place_holder_env_link: [u32; 2],
    pub id: u32,
    pub asid: u32,
    pub parent_id: u32,
    pub status: EnvStatus,
    pub pgdir: *mut Pde,
    _place_holder_env_sched_link: [u32; 2],
    pub priority: u32,
    pub ipc_data: IpcData,
    pub user_tlb_mod_entry: u32,
    pub env_runs: u32,
}

The PCB struct. Compatible with the C-Like memory structure and the MOS.

Fields

trap_frame: TrapFrame

Trap Frame stored in the PCB.

_place_holder_env_link: [u32; 2]

Unused placeholder item.

id: u32

The env id.

asid: u32

The asid for TLB.

parent_id: u32

The env’s parent env’s id;

status: EnvStatus

The running status of this env.

pgdir: *mut Pde

The page directory address of this env.

_place_holder_env_sched_link: [u32; 2]

Unused placeholder item.

priority: u32

The priority of this env.

ipc_data: IpcData

The IPC data collected.

user_tlb_mod_entry: u32

The entry of the tlb mod handler in user space.

env_runs: u32

Used in Lab 6. ///

Implementations

impl EnvData

pub const fn new() -> Self

Used for the static construction. All members are filled with zero.

Trait Implementations

impl Clone for EnvData

fn clone(&self) -> EnvData

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Default for EnvData

fn default() -> Self

Returns the “default value” for a type.

impl Copy for EnvData