embassy_executor/raw/
waker.rs1use core::task::{RawWaker, RawWakerVTable, Waker};
2
3use super::{wake_task, TaskHeader, TaskRef};
4
5static VTABLE: RawWakerVTable = RawWakerVTable::new(clone, wake, wake, drop);
6
7unsafe fn clone(p: *const ()) -> RawWaker {
8 RawWaker::new(p, &VTABLE)
9}
10
11unsafe fn wake(p: *const ()) {
12 wake_task(TaskRef::from_ptr(p as *const TaskHeader))
13}
14
15unsafe fn drop(_: *const ()) {
16 }
18
19pub(crate) unsafe fn from_task(p: TaskRef) -> Waker {
20 Waker::from_raw(RawWaker::new(p.as_ptr() as _, &VTABLE))
21}
22
23pub fn task_from_waker(waker: &Waker) -> TaskRef {
35 if waker.vtable() as *const _ != &VTABLE as *const _ {
38 panic!("Found waker not created by the Embassy executor. `embassy_time::Timer` only works with the Embassy executor.")
39 }
40 unsafe { TaskRef::from_ptr(waker.data() as *const TaskHeader) }
42}