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sync: add OnceCell (#3591)

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b-naber
2021-04-05 22:03:57 +02:00
committed by GitHub
parent f93bc9bad1
commit f6e4e85dfb
4 changed files with 696 additions and 0 deletions
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tokio/tests/async_send_sync.rs
+25
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@@ -1,9 +1,12 @@
#![warn(rust_2018_idioms)]
#![cfg(feature = "full")]
#![allow(clippy::type_complexity)]
use std::cell::Cell;
use std::future::Future;
use std::io::{Cursor, SeekFrom};
use std::net::SocketAddr;
use std::pin::Pin;
use std::rc::Rc;
use tokio::net::TcpStream;
use tokio::time::{Duration, Instant};
@@ -265,6 +268,28 @@ async_assert_fn!(tokio::sync::watch::Sender<u8>::closed(_): Send & Sync);
async_assert_fn!(tokio::sync::watch::Sender<Cell<u8>>::closed(_): !Send & !Sync);
async_assert_fn!(tokio::sync::watch::Sender<Rc<u8>>::closed(_): !Send & !Sync);
async_assert_fn!(tokio::sync::OnceCell<u8>::get_or_init(
_, fn() -> Pin<Box<dyn Future<Output = u8> + Send + Sync>>): Send & Sync);
async_assert_fn!(tokio::sync::OnceCell<u8>::get_or_init(
_, fn() -> Pin<Box<dyn Future<Output = u8> + Send>>): Send & !Sync);
async_assert_fn!(tokio::sync::OnceCell<u8>::get_or_init(
_, fn() -> Pin<Box<dyn Future<Output = u8>>>): !Send & !Sync);
async_assert_fn!(tokio::sync::OnceCell<Cell<u8>>::get_or_init(
_, fn() -> Pin<Box<dyn Future<Output = Cell<u8>> + Send + Sync>>): !Send & !Sync);
async_assert_fn!(tokio::sync::OnceCell<Cell<u8>>::get_or_init(
_, fn() -> Pin<Box<dyn Future<Output = Cell<u8>> + Send>>): !Send & !Sync);
async_assert_fn!(tokio::sync::OnceCell<Cell<u8>>::get_or_init(
_, fn() -> Pin<Box<dyn Future<Output = Cell<u8>>>>): !Send & !Sync);
async_assert_fn!(tokio::sync::OnceCell<Rc<u8>>::get_or_init(
_, fn() -> Pin<Box<dyn Future<Output = Rc<u8>> + Send + Sync>>): !Send & !Sync);
async_assert_fn!(tokio::sync::OnceCell<Rc<u8>>::get_or_init(
_, fn() -> Pin<Box<dyn Future<Output = Rc<u8>> + Send>>): !Send & !Sync);
async_assert_fn!(tokio::sync::OnceCell<Rc<u8>>::get_or_init(
_, fn() -> Pin<Box<dyn Future<Output = Rc<u8>>>>): !Send & !Sync);
assert_value!(tokio::sync::OnceCell<u8>: Send & Sync);
assert_value!(tokio::sync::OnceCell<Cell<u8>>: Send & !Sync);
assert_value!(tokio::sync::OnceCell<Rc<u8>>: !Send & !Sync);
async_assert_fn!(tokio::task::LocalKey<u32>::scope(_, u32, BoxFutureSync<()>): Send & Sync);
async_assert_fn!(tokio::task::LocalKey<u32>::scope(_, u32, BoxFutureSend<()>): Send & !Sync);
async_assert_fn!(tokio::task::LocalKey<u32>::scope(_, u32, BoxFuture<()>): !Send & !Sync);