unsupported.rs - source
Description: Source of the Rust file `library/std/src/sys/thread/unsupported.rs`.

#
std/sys/thread/
unsupported.rs

    1use crate::ffi::CStr;
    2use crate::io;
    3use crate::num::NonZero;
    4use crate::thread::ThreadInit;
    5use crate::time::Duration;
    6
    7// Silence dead code warnings for the otherwise unused ThreadInit::init() call.
    8#[expect(dead_code)]
    9fn dummy_init_call(init: Box<ThreadInit>) {
    10    drop(init.init());
    11}
    12
    13pub struct Thread(!);
    14
    15pub const DEFAULT_MIN_STACK_SIZE: usize = 64 * 1024;
    16
    17impl Thread {
    18    // unsafe: see thread::Builder::spawn_unchecked for safety requirements
    19    pub unsafe fn new(_stack: usize, _init: Box<ThreadInit>) -> io::Result<Thread> {
    20        Err(io::Error::UNSUPPORTED_PLATFORM)
    21    }
    22
    23    pub fn join(self) {
    24        self.0
    25    }
    26}
    27
    28pub fn available_parallelism() -> io::Result<NonZero<usize>> {
    29    Err(io::Error::UNKNOWN_THREAD_COUNT)
    30}
    31
    32pub fn current_os_id() -> Option<u64> {
    33    None
    34}
    35
    36pub fn yield_now() {
    37    // do nothing
    38}
    39
    40pub fn set_name(_name: &CStr) {
    41    // nope
    42}
    43
    44pub fn sleep(_dur: Duration) {
    45    panic!("can't sleep");
    46}