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-rw-r--r--embassy-time-queue-driver/src/lib.rs28
1 files changed, 0 insertions, 28 deletions
diff --git a/embassy-time-queue-driver/src/lib.rs b/embassy-time-queue-driver/src/lib.rs
index 97c81a124..333b6124d 100644
--- a/embassy-time-queue-driver/src/lib.rs
+++ b/embassy-time-queue-driver/src/lib.rs
@@ -10,8 +10,6 @@
10//! As a HAL implementer, you need to depend on this crate if you want to implement a time driver, 10//! As a HAL implementer, you need to depend on this crate if you want to implement a time driver,
11//! but how you should do so is documented in `embassy-time-driver`. 11//! but how you should do so is documented in `embassy-time-driver`.
12 12
13use core::task::Waker;
14
15#[cfg(feature = "_generic-queue")] 13#[cfg(feature = "_generic-queue")]
16pub mod queue_generic; 14pub mod queue_generic;
17#[cfg(not(feature = "_generic-queue"))] 15#[cfg(not(feature = "_generic-queue"))]
@@ -21,29 +19,3 @@ pub mod queue_integrated;
21pub use queue_generic::Queue; 19pub use queue_generic::Queue;
22#[cfg(not(feature = "_generic-queue"))] 20#[cfg(not(feature = "_generic-queue"))]
23pub use queue_integrated::Queue; 21pub use queue_integrated::Queue;
24
25extern "Rust" {
26 fn _embassy_time_schedule_wake(at: u64, waker: &Waker);
27}
28
29/// Schedule the given waker to be woken at `at`.
30pub fn schedule_wake(at: u64, waker: &Waker) {
31 // This function is not implemented in embassy-time-driver because it needs access to executor
32 // internals. The function updates task state, then delegates to the implementation provided
33 // by the time driver.
34 #[cfg(not(feature = "_generic-queue"))]
35 {
36 use embassy_executor::raw::task_from_waker;
37 use embassy_executor::raw::timer_queue::TimerEnqueueOperation;
38 // The very first thing we must do, before we even access the timer queue, is to
39 // mark the task a TIMER_QUEUED. This ensures that the task that is being scheduled
40 // can not be respawn while we are accessing the timer queue.
41 let task = task_from_waker(waker);
42 if unsafe { task.timer_enqueue() } == TimerEnqueueOperation::Ignore {
43 // We are not allowed to enqueue the task in the timer queue. This is because the
44 // task is not spawned, and so it makes no sense to schedule it.
45 return;
46 }
47 }
48 unsafe { _embassy_time_schedule_wake(at, waker) }
49}