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Rollup merge of #53389 - RalfJung:thread-join, r=sfackler

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document effect of join on memory ordering

Fixes https://github.com/rust-lang/rust/issues/45467
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Pietro Albini 2018-08-30 20:15:27 +02:00 committed by GitHub
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src/libstd/thread/mod.rs
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@ -1310,11 +1310,17 @@ impl<T> JoinHandle<T> {
/// Waits for the associated thread to finish. /// Waits for the associated thread to finish.
/// ///
/// In terms of [atomic memory orderings], the completion of the associated
/// thread synchronizes with this function returning. In other words, all
/// operations performed by that thread are ordered before all
/// operations that happen after `join` returns.
///
/// If the child thread panics, [`Err`] is returned with the parameter given /// If the child thread panics, [`Err`] is returned with the parameter given
/// to [`panic`]. /// to [`panic`].
/// ///
/// [`Err`]: ../../std/result/enum.Result.html#variant.Err /// [`Err`]: ../../std/result/enum.Result.html#variant.Err
/// [`panic`]: ../../std/macro.panic.html /// [`panic`]: ../../std/macro.panic.html
/// [atomic memory orderings]: ../../std/sync/atomic/index.html
/// ///
/// # Panics /// # Panics
/// ///