4 releases
0.2.2 | Mar 3, 2022 |
---|---|
0.2.1 | Sep 15, 2021 |
0.2.0 | Apr 2, 2021 |
0.1.0 | Mar 29, 2021 |
#40 in #async-task
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23KB
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task-group
A small crate for managing groups of tokio tasks.
let (task_group, task_manager): (TaskGroup<Error>, TaskManager<_>) = TaskGroup::new();
task_group.clone().spawn("a task", async move {
task_group.spawn("b task", async move {
/* all kinds of things */
Ok(())
}).await.expect("spawned b");
Ok(())
}).await.expect("spawned a");
task_manager.await.expect("everyone successful");
A TaskGroup
is used to spawn a collection of tasks. The collection has two
properties:
- if any task returns an error or panicks, all tasks are terminated.
- if the
TaskManager
returned byTaskGroup::new
is dropped, all tasks are terminated.
A TaskManager
is used to manage a collection of tasks. There are two
things you can do with it:
- TaskManager impls Future, so you can poll or await on it. It will be
Ready when all tasks return Ok(()) and the associated
TaskGroup
is dropped (so no more tasks can be created), or when any task panicks or returns an Err(E). - When a TaskManager is dropped, all tasks it contains are canceled
(terminated). So, if you use a combinator like
tokio::time::timeout(duration, task_manager).await
, all tasks will be terminated if the timeout occurs.
See examples/
and the tests in src/lib.rs
for more examples.
Dependencies
~2–8MB
~46K SLoC