1 #![deny(unsafe_op_in_unsafe_fn)]
6 use crate::num::NonZeroUsize;
7 use crate::sys::unsupported;
8 use crate::time::Duration;
12 pub const DEFAULT_MIN_STACK_SIZE: usize = 4096;
15 // unsafe: see thread::Builder::spawn_unchecked for safety requirements
16 pub unsafe fn new(_stack: usize, _p: Box<dyn FnOnce()>) -> io::Result<Thread> {
21 let ret = unsafe { wasi::sched_yield() };
22 debug_assert_eq!(ret, Ok(()));
25 pub fn set_name(_name: &CStr) {
29 pub fn sleep(dur: Duration) {
30 let nanos = dur.as_nanos();
31 assert!(nanos <= u64::MAX as u128);
33 const USERDATA: wasi::Userdata = 0x0123_45678;
35 let clock = wasi::SubscriptionClock {
36 id: wasi::CLOCKID_MONOTONIC,
37 timeout: nanos as u64,
42 let in_ = wasi::Subscription {
44 u: wasi::SubscriptionU { tag: 0, u: wasi::SubscriptionUU { clock } },
47 let mut event: wasi::Event = mem::zeroed();
48 let res = wasi::poll_oneoff(&in_, &mut event, 1);
54 error: wasi::ERRNO_SUCCESS,
55 type_: wasi::EVENTTYPE_CLOCK,
59 _ => panic!("thread::sleep(): unexpected result of poll_oneoff"),
69 pub fn available_parallelism() -> io::Result<NonZeroUsize> {
75 pub unsafe fn current() -> Option<Guard> {
78 pub unsafe fn init() -> Option<Guard> {