Struct PoolGuard

pub struct PoolGuard<'a, T: Send, F: Fn() -> T>(/* private fields */);

Available on crate feature alloc only.

A guard that is returned when a caller requests a value from the pool.

The purpose of the guard is to use RAII to automatically put the value back in the pool once it’s dropped.

Implementations

impl<'a, T: Send, F: Fn() -> T> PoolGuard<'a, T, F>

pub fn put(this: PoolGuard<'_, T, F>)

Consumes this guard and puts it back into the pool.

This circumvents the guard’s Drop implementation. This can be useful in circumstances where the automatic Drop results in poorer codegen, such as calling non-inlined functions.

Trait Implementations

impl<'a, T: Send + Debug, F: Fn() -> T> Debug for PoolGuard<'a, T, F>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'a, T: Send, F: Fn() -> T> Deref for PoolGuard<'a, T, F>

type Target = T

The resulting type after dereferencing.

fn deref(&self) -> &T

Dereferences the value.

impl<'a, T: Send, F: Fn() -> T> DerefMut for PoolGuard<'a, T, F>

fn deref_mut(&mut self) -> &mut T

Mutably dereferences the value.

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 32 bytes