Struct AutoreleasePool 

pub struct AutoreleasePool { /* private fields */ }

An autorelease pool, drained when it goes out of scope.

Objective-C’s convention is that a method returning an object it does not own hands back an autoreleased one — alive until the enclosing pool drains. Cocoa’s own event loop provides that pool; a Rust program has none, so without this every temporary AppKit or UIKit object accumulates for the life of the process. It is not a slow leak: capturing a few hundred frames costs tens of megabytes.

Every entry point here that talks to AppKit or UIKit holds one for the duration of the call. Code that loops over such calls wants its own around the loop as well, so peak memory tracks one iteration rather than all of them.

for frame in 0..600 {
    let _pool = objc::AutoreleasePool::new();
    capture(frame);
}

Implementations

impl AutoreleasePool

pub fn new() -> Self

Trait Implementations

impl Default for AutoreleasePool

fn default() -> Self

Returns the “default value” for a type.

impl Drop for AutoreleasePool

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.