Macro std::thread_local

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

See LocalKey documentation for more information.