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doc: explain what task_mgr gives us

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Joonas Koivunen
2023-05-22 10:57:04 +03:00
parent d0b2befe02
commit bc4f6db0ad
1 changed files with 2 additions and 1 deletions
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3
libs/utils/src/shared_retryable.rs
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@@ -20,7 +20,8 @@ use std::sync::Arc;
/// ```
///
/// Implementation is cancel safe. Implementation and internal structure are hurt by the inability
/// to just spawn the task, but this is needed for pageserver usage.
/// to just spawn the task, but this is needed for `pageserver` usage. Within `pageserver`, the
/// `task_mgr` must be used to spawn the future because it will cause awaiting during shutdown.
///
/// Implementation exposes a fully decomposed [`SharedRetryable::try_restart`] which requires the
/// caller to do the spawning before awaiting for the result. If the caller is dropped while this