6 releases (3 breaking)
0.3.0 | Aug 25, 2023 |
---|---|
0.2.1 | Aug 10, 2023 |
0.2.0 | Apr 27, 2023 |
0.1.1 | Nov 23, 2022 |
0.0.0 | Oct 31, 2020 |
#378 in Embedded development
6,206 downloads per month
Used in 13 crates
97KB
1.5K
SLoC
embassy-executor
An async/await executor designed for embedded usage.
- No
alloc
, no heap needed. Task futures are statically allocated. - No "fixed capacity" data structures, executor works with 1 or 1000 tasks without needing config/tuning.
- Integrated timer queue: sleeping is easy, just do
Timer::after(Duration::from_secs(1)).await;
. - No busy-loop polling: CPU sleeps when there's no work to do, using interrupts or
WFE/SEV
. - Efficient polling: a wake will only poll the woken task, not all of them.
- Fair: a task can't monopolize CPU time even if it's constantly being woken. All other tasks get a chance to run before a given task gets polled for the second time.
- Creating multiple executor instances is supported, to run tasks with multiple priority levels. This allows higher-priority tasks to preempt lower-priority tasks.
Dependencies
~1.3–2.3MB
~46K SLoC