pub struct Barrier { /* fields omitted */ }
A barrier enables multiple threads to synchronize the beginning of some computation.
use std::sync::{Arc, Barrier};
use std::thread;
let mut handles = Vec::with_capacity(10);
let barrier = Arc::new(Barrier::new(10));
for _ in 0..10 {
let c = barrier.clone();
// The same messages will be printed together.
// You will NOT see any interleaving.
handles.push(thread::spawn(move|| {
println!("before wait");
c.wait();
println!("after wait");
}));
}
// Wait for other threads to finish.
for handle in handles {
handle.join().unwrap();
}impl Barrier[src]
pub fn new(n: usize) -> Barrier[src]
Creates a new barrier that can block a given number of threads.
A barrier will block n-1 threads which call wait and then wake up all threads at once when the nth thread calls wait.
use std::sync::Barrier; let barrier = Barrier::new(10);
pub fn wait(&self) -> BarrierWaitResult[src]
Blocks the current thread until all threads have rendezvoused here.
Barriers are re-usable after all threads have rendezvoused once, and can be used continuously.
A single (arbitrary) thread will receive a BarrierWaitResult that returns true from is_leader when returning from this function, and all other threads will receive a result that will return false from is_leader.
use std::sync::{Arc, Barrier};
use std::thread;
let mut handles = Vec::with_capacity(10);
let barrier = Arc::new(Barrier::new(10));
for _ in 0..10 {
let c = barrier.clone();
// The same messages will be printed together.
// You will NOT see any interleaving.
handles.push(thread::spawn(move|| {
println!("before wait");
c.wait();
println!("after wait");
}));
}
// Wait for other threads to finish.
for handle in handles {
handle.join().unwrap();
}impl !RefUnwindSafe for Barrierimpl Send for Barrierimpl Sync for Barrierimpl Unpin for Barrierimpl UnwindSafe for Barrierimpl<T> Any for T where
T: 'static + ?Sized, [src]
impl<T> Borrow<T> for T where
T: ?Sized, [src]
fn borrow(&self) -> &TⓘNotable traits for &'_ mut F
impl<'_, F> Future for &'_ mut F where
F: Unpin + Future + ?Sized,
type Output = <F as Future>::Output;
impl<'_, I> Iterator for &'_ mut I where
I: Iterator + ?Sized,
type Item = <I as Iterator>::Item;
impl<R: Read + ?Sized, '_> Read for &'_ mut R
impl<W: Write + ?Sized, '_> Write for &'_ mut W
[src]
impl<T> BorrowMut<T> for T where
T: ?Sized, [src]
fn borrow_mut(&mut self) -> &mut TⓘNotable traits for &'_ mut F
impl<'_, F> Future for &'_ mut F where
F: Unpin + Future + ?Sized,
type Output = <F as Future>::Output;
impl<'_, I> Iterator for &'_ mut I where
I: Iterator + ?Sized,
type Item = <I as Iterator>::Item;
impl<R: Read + ?Sized, '_> Read for &'_ mut R
impl<W: Write + ?Sized, '_> Write for &'_ mut W
[src]
impl<T> From<T> for T[src]
impl<T, U> Into<U> for T where
U: From<T>, [src]
impl<T, U> TryFrom<U> for T where
U: Into<T>, [src]
type Error = InfallibleThe type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>[src]
impl<T, U> TryInto<U> for T where
U: TryFrom<T>, [src]
© 2010 The Rust Project Developers
Licensed under the Apache License, Version 2.0 or the MIT license, at your option.
https://doc.rust-lang.org/std/sync/struct.Barrier.html