Struct ThreadLocal 

pub struct ThreadLocal<T> { /* private fields */ }

A thread-local storage slot holding an independent value of type T per thread.

The value for each thread is constructed lazily on first access using the init function supplied at creation time, and dropped when the thread exits.

Implementations

impl<T> ThreadLocal<T>

pub fn new(init: fn() -> T) -> Self

Allocates a TLS slot. init is called once per thread to construct its value.

pub fn with<R>(&self, f: impl FnOnce(&T) -> R) -> R

Calls f with a shared reference to this thread’s value, initializing it on first access.

pub fn with_mut<R>(&self, f: impl FnOnce(&mut T) -> R) -> R

Calls f with a mutable reference to this thread’s value, initializing it on first access.

Trait Implementations

impl<T> Drop for ThreadLocal<T>

fn drop(&mut self)

Executes the destructor for this type.

fn pin_drop(self: Pin<&mut Self>)

🔬This is a nightly-only experimental API. (pin_ergonomics)

Execute the destructor for this type, but different to Drop::drop, it requires self to be pinned.

impl<T: Send> Send for ThreadLocal<T>

impl<T: Send> Sync for ThreadLocal<T>