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task: add guarantee about when a spawned task may be polled (#5816)

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Diggory Blake
2023-06-27 19:05:09 +02:00
committed by GitHub
parent 6b076a2743
commit 657fd883d2
1 changed files with 4 additions and 0 deletions
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tokio/src/task/spawn.rs
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@@ -15,6 +15,10 @@ cfg_rt! {
/// different thread to be executed. The specifics depend on the current /// different thread to be executed. The specifics depend on the current
/// [`Runtime`](crate::runtime::Runtime) configuration. /// [`Runtime`](crate::runtime::Runtime) configuration.
/// ///
/// It is guaranteed that spawn will not synchronously poll the task being spawned.
/// This means that calling spawn while holding a lock does not pose a risk of
/// deadlocking with the spawned task.
///
/// There is no guarantee that a spawned task will execute to completion. /// There is no guarantee that a spawned task will execute to completion.
/// When a runtime is shutdown, all outstanding tasks are dropped, /// When a runtime is shutdown, all outstanding tasks are dropped,
/// regardless of the lifecycle of that task. /// regardless of the lifecycle of that task.