AsyncSemaphoreUtils class

Semaphore: at most permits concurrent acquisitions.

Constructors

AsyncSemaphoreUtils(int permits)

Creates a semaphore allowing at most permits concurrent acquisitions. Audited: 2026-06-12 11:26 EDT

Properties

hashCode → int

The hash code for this object.

no setter, inherited

permits → int

Maximum number of concurrent acquisitions allowed.

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

acquire() → Future<void>

Waits for a permit, then acquires it. Completes immediately when a permit is free, otherwise queues until release hands one over. Audited: 2026-06-12 11:26 EDT

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

release() → void

Releases one permit; hands it directly to the next waiter if any, otherwise returns it to the available pool. Audited: 2026-06-12 11:26 EDT

run<T>(AsyncAction<T> fn) → Future<T>

Acquires a permit, runs fn, then releases; ensures release on exception.

toString() → String

A string representation of this object.

override

Operators

operator ==(Object other) → bool

The equality operator.

inherited