1 #![deny(unsafe_op_in_unsafe_fn)]
6 use crate::sys::{unsupported, Void};
7 use crate::time::Duration;
9 pub struct Thread(Void);
11 pub const DEFAULT_MIN_STACK_SIZE: usize = 4096;
14 // unsafe: see thread::Builder::spawn_unchecked for safety requirements
15 pub unsafe fn new(_stack: usize, _p: Box<dyn FnOnce()>) -> io::Result<Thread> {
20 let ret = unsafe { wasi::sched_yield() };
21 debug_assert_eq!(ret, Ok(()));
24 pub fn set_name(_name: &CStr) {
28 pub fn sleep(dur: Duration) {
29 let nanos = dur.as_nanos();
30 assert!(nanos <= u64::MAX as u128);
32 const USERDATA: wasi::Userdata = 0x0123_45678;
34 let clock = wasi::SubscriptionClock {
35 id: wasi::CLOCKID_MONOTONIC,
36 timeout: nanos as u64,
41 let in_ = wasi::Subscription {
43 r#type: wasi::EVENTTYPE_CLOCK,
44 u: wasi::SubscriptionU { clock },
47 let mut event: wasi::Event = mem::zeroed();
48 let res = wasi::poll_oneoff(&in_, &mut event, 1);
53 userdata: USERDATA, error: 0, r#type: wasi::EVENTTYPE_CLOCK, ..
56 _ => panic!("thread::sleep(): unexpected result of poll_oneoff"),
68 pub unsafe fn current() -> Option<Guard> {
71 pub unsafe fn init() -> Option<Guard> {