std::thread_local - Rust
Description: API documentation for the Rust `thread_local` macro in crate `std`.
Keywords: rust, rustlang, rust-lang, thread_local

# Macro std::thread_local 1.0.0 [−] [src]

    macro_rules! thread_local {
        () => { ... };
        ($(#[$attr:meta])* $vis:vis static $name:ident: $t:ty = $init:expr; $($rest:tt)*) => { ... };
        ($(#[$attr:meta])* $vis:vis static $name:ident: $t:ty = $init:expr) => { ... };
    }

Declare a new thread local storage key of type `std::thread::LocalKey`.

# Syntax

The macro wraps any number of static declarations and makes them thread local. Publicity and attributes for each static are allowed. Example:

    use std::cell::RefCell;
    thread_local! {
        pub static FOO: RefCell<u32> = RefCell::new(1);

        #[allow(unused)]
        static BAR: RefCell<f32> = RefCell::new(1.0);
    }Run

See LocalKey documentation for more information.

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