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task: add JoinSet for managing sets of tasks(#4335)

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Adds `JoinSet` for managing multiple spawned tasks and joining them
in completion order.

Closes: #3903
This commit is contained in:
Alice Ryhl
2022-02-01 14:17:09 -08:00
committed by GitHub
parent f602410227
commit 1bb4d23162
15 changed files with 1052 additions and 23 deletions
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tokio/tests/async_send_sync.rs
+20 -11
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@@ -435,24 +435,33 @@ async_assert_fn!(tokio::sync::watch::Sender<NN>::closed(_): !Send & !Sync & !Unp
async_assert_fn!(tokio::sync::watch::Sender<YN>::closed(_): !Send & !Sync & !Unpin);
async_assert_fn!(tokio::sync::watch::Sender<YY>::closed(_): Send & Sync & !Unpin);
async_assert_fn!(tokio::task::LocalKey<u32>::scope(_, u32, BoxFutureSync<()>): Send & Sync & !Unpin);
async_assert_fn!(tokio::task::LocalKey<u32>::scope(_, u32, BoxFutureSend<()>): Send & !Sync & !Unpin);
async_assert_fn!(tokio::task::LocalKey<u32>::scope(_, u32, BoxFuture<()>): !Send & !Sync & !Unpin);
async_assert_fn!(tokio::task::LocalKey<Cell<u32>>::scope(_, Cell<u32>, BoxFutureSync<()>): Send & !Sync & !Unpin);
async_assert_fn!(tokio::task::LocalKey<Cell<u32>>::scope(_, Cell<u32>, BoxFutureSend<()>): Send & !Sync & !Unpin);
async_assert_fn!(tokio::task::JoinSet<Cell<u32>>::join_one(_): Send & Sync & !Unpin);
async_assert_fn!(tokio::task::JoinSet<Cell<u32>>::shutdown(_): Send & Sync & !Unpin);
async_assert_fn!(tokio::task::JoinSet<Rc<u32>>::join_one(_): !Send & !Sync & !Unpin);
async_assert_fn!(tokio::task::JoinSet<Rc<u32>>::shutdown(_): !Send & !Sync & !Unpin);
async_assert_fn!(tokio::task::JoinSet<u32>::join_one(_): Send & Sync & !Unpin);
async_assert_fn!(tokio::task::JoinSet<u32>::shutdown(_): Send & Sync & !Unpin);
async_assert_fn!(tokio::task::LocalKey<Cell<u32>>::scope(_, Cell<u32>, BoxFuture<()>): !Send & !Sync & !Unpin);
async_assert_fn!(tokio::task::LocalKey<Rc<u32>>::scope(_, Rc<u32>, BoxFutureSync<()>): !Send & !Sync & !Unpin);
async_assert_fn!(tokio::task::LocalKey<Rc<u32>>::scope(_, Rc<u32>, BoxFutureSend<()>): !Send & !Sync & !Unpin);
async_assert_fn!(tokio::task::LocalKey<Cell<u32>>::scope(_, Cell<u32>, BoxFutureSend<()>): Send & !Sync & !Unpin);
async_assert_fn!(tokio::task::LocalKey<Cell<u32>>::scope(_, Cell<u32>, BoxFutureSync<()>): Send & !Sync & !Unpin);
async_assert_fn!(tokio::task::LocalKey<Rc<u32>>::scope(_, Rc<u32>, BoxFuture<()>): !Send & !Sync & !Unpin);
async_assert_fn!(tokio::task::LocalKey<Rc<u32>>::scope(_, Rc<u32>, BoxFutureSend<()>): !Send & !Sync & !Unpin);
async_assert_fn!(tokio::task::LocalKey<Rc<u32>>::scope(_, Rc<u32>, BoxFutureSync<()>): !Send & !Sync & !Unpin);
async_assert_fn!(tokio::task::LocalKey<u32>::scope(_, u32, BoxFuture<()>): !Send & !Sync & !Unpin);
async_assert_fn!(tokio::task::LocalKey<u32>::scope(_, u32, BoxFutureSend<()>): Send & !Sync & !Unpin);
async_assert_fn!(tokio::task::LocalKey<u32>::scope(_, u32, BoxFutureSync<()>): Send & Sync & !Unpin);
async_assert_fn!(tokio::task::LocalSet::run_until(_, BoxFutureSync<()>): !Send & !Sync & !Unpin);
async_assert_fn!(tokio::task::unconstrained(BoxFuture<()>): !Send & !Sync & Unpin);
async_assert_fn!(tokio::task::unconstrained(BoxFutureSend<()>): Send & !Sync & Unpin);
async_assert_fn!(tokio::task::unconstrained(BoxFutureSync<()>): Send & Sync & Unpin);
assert_value!(tokio::task::LocalSet: !Send & !Sync & Unpin);
assert_value!(tokio::task::JoinHandle<YY>: Send & Sync & Unpin);
assert_value!(tokio::task::JoinHandle<YN>: Send & Sync & Unpin);
assert_value!(tokio::task::JoinHandle<NN>: !Send & !Sync & Unpin);
assert_value!(tokio::task::JoinError: Send & Sync & Unpin);
assert_value!(tokio::task::JoinHandle<NN>: !Send & !Sync & Unpin);
assert_value!(tokio::task::JoinHandle<YN>: Send & Sync & Unpin);
assert_value!(tokio::task::JoinHandle<YY>: Send & Sync & Unpin);
assert_value!(tokio::task::JoinSet<YY>: Send & Sync & Unpin);
assert_value!(tokio::task::JoinSet<YN>: Send & Sync & Unpin);
assert_value!(tokio::task::JoinSet<NN>: !Send & !Sync & Unpin);
assert_value!(tokio::task::LocalSet: !Send & !Sync & Unpin);
assert_value!(tokio::runtime::Builder: Send & Sync & Unpin);
assert_value!(tokio::runtime::EnterGuard<'_>: Send & Sync & Unpin);