Struct ScopeArena

pub struct ScopeArena { /* private fields */ }

An arena for allocating ScopeGuards.

Functions as a memory pool for allocating various trait objects needed for dropping type-erased ElasticGuards. Each time the scope method is called, the arena will have some allocations made; to free these, ScopeArena::reset should be called.

Implementations

impl ScopeArena

pub fn new() -> Self

Create an empty scope arena.

pub fn scope<'a, F, R>(&'a self, f: F) -> R

where F: FnOnce(&mut ScopeGuard<'a>) -> R,

Create a scope within which we can safely loan elastics.

This method does not reset the arena afterwards, so if you use it, it is your responsibility to reset the ScopeArena with ScopeArena::reset to avoid memory leaks.

pub fn reset(&mut self)

Clear memory allocated by the arena, preserving the allocations for reuse.

Trait Implementations

impl Debug for ScopeArena

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

Formats the value using the given formatter.

impl Default for ScopeArena

fn default() -> ScopeArena

Returns the “default value” for a type.