     1
     2
     3
     4
     5
     6
     7
     8
     9
    10
    11
    12
    13
    14
    15
    16
    17
    18
    19
    20
    21
    22
    23
    24
    25
    26
    27
    28
    29
    30
    31
    32
    33
    34
    35
    36
    37
    38
    39
    40
    41
    42
    43
    44

    // Copyright 2013 The Rust Project Developers. See the COPYRIGHT
    // file at the top-level directory of this distribution and at
    // http://rust-lang.org/COPYRIGHT.
    //
    // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
    // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
    // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
    // option. This file may not be copied, modified, or distributed
    // except according to those terms.

    //! Useful synchronization primitives.
    //!
    //! This module contains useful safe and unsafe synchronization primitives.
    //! Most of the primitives in this module do not provide any sort of locking
    //! and/or blocking at all, but rather provide the necessary tools to build
    //! other types of concurrent primitives.

    #![stable(feature = "rust1", since = "1.0.0")]

    #[stable(feature = "rust1", since = "1.0.0")]
    pub use alloc::arc::{Arc, Weak};
    #[stable(feature = "rust1", since = "1.0.0")]
    pub use core::sync::atomic;

    #[stable(feature = "rust1", since = "1.0.0")]
    pub use self::barrier::{Barrier, BarrierWaitResult};
    #[stable(feature = "rust1", since = "1.0.0")]
    pub use self::condvar::{Condvar, WaitTimeoutResult};
    #[stable(feature = "rust1", since = "1.0.0")]
    pub use self::mutex::{Mutex, MutexGuard};
    #[stable(feature = "rust1", since = "1.0.0")]
    pub use self::once::{Once, OnceState, ONCE_INIT};
    #[stable(feature = "rust1", since = "1.0.0")]
    pub use sys_common::poison::{PoisonError, TryLockError, TryLockResult, LockResult};
    #[stable(feature = "rust1", since = "1.0.0")]
    pub use self::rwlock::{RwLock, RwLockReadGuard, RwLockWriteGuard};

    pub mod mpsc;

    mod barrier;
    mod condvar;
    mod mutex;
    mod once;
    mod rwlock;

# Help

## Keyboard Shortcuts

`?`
  Show this help dialog
`S`
  Focus the search field
`↑`
  Move up in search results
`↓`
  Move down in search results
`↹`
  Switch tab
`⏎`
  Go to active search result
`+`
  Expand all sections
`-`
  Collapse all sections

## Search Tricks

Prefix searches with a type followed by a colon (e.g. `fn:`) to restrict the search to a given type.

Accepted types are: `fn`, `mod`, `struct`, `enum`, `trait`, `type`, `macro`, and `const`.

Search functions by type signature (e.g. `vec -> usize` or `* -> vec`)