49 lines
1.1 KiB
Rust
49 lines
1.1 KiB
Rust
#![no_main]
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use core::sync::atomic::{AtomicUsize, Ordering};
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rt::queue!(QUEUE, u32, 10);
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fn pusher(mut i: u32) {
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rt::task::drop_privilege();
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loop {
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QUEUE.push(i);
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i += 1;
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}
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}
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const NPUSHERS: usize = 2;
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const TASK_INC: u32 = 0x1000000;
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static NUM_POPPED: AtomicUsize = AtomicUsize::new(0);
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fn popper() {
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rt::task::drop_privilege();
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let mut x: u32;
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let mut max_elems = [0u32; NPUSHERS];
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loop {
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x = QUEUE.pop();
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NUM_POPPED.fetch_add(1, Ordering::Relaxed);
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let task = x / TASK_INC;
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let elem = x % TASK_INC;
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if let Some(max_elem) = max_elems.get_mut(task as usize) {
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assert!(
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elem >= *max_elem,
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"queue elements were received out of order"
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);
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*max_elem = elem;
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}
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}
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}
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fn timeout() {
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rt::task::drop_privilege();
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rt::task::sleep(1000);
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rt::trap();
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}
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rt::task!(pusher(0), rt::task::STACK_MIN, 1);
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rt::task!(pusher(TASK_INC), rt::task::STACK_MIN, 1);
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rt::task!(popper, rt::task::STACK_MIN, 1);
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rt::task!(timeout, rt::task::STACK_MIN, 0);
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