From 5daa173ce4b153a532b4daa9e94c7a248231f25b Mon Sep 17 00:00:00 2001 From: Dario Nieuwenhuis Date: Wed, 17 Aug 2022 23:40:16 +0200 Subject: Split embassy-time from embassy-executor. --- embassy-executor/README.md | 11 +++++++++++ 1 file changed, 11 insertions(+) create mode 100644 embassy-executor/README.md (limited to 'embassy-executor/README.md') diff --git a/embassy-executor/README.md b/embassy-executor/README.md new file mode 100644 index 000000000..47d0cb8a2 --- /dev/null +++ b/embassy-executor/README.md @@ -0,0 +1,11 @@ +# 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. -- cgit