BinarySemaphore class

A BinarySemaphore is a synchronization primitive with an integer value restricted to 0 or 1, representing locked (0) or unlocked (1) states.

Inheritance

• Object
• Lock
• BinarySemaphore

Constructors

BinarySemaphore()

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

acquire() → Future<void>

Acquires a permit.

override

lock(FutureOr<void> action()) → Future<void>

Acquires the lock, then executes the callback function action, and then releases the lock.

inherited

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

reacquire() → Future<void>

Reacquires a permit.

override

release() → Future<void>

Releases a permit.

override

toString() → String

A string representation of this object.

inherited

tryAcquire(Duration timeout) → Future<bool>

Tries to acquire the permit and returns true if the permit was acquired before the timeout expires, otherwise the acquisition attempt is canceled and false is returned.

override

tryLock(Duration timeout, FutureOr<void> action()) → Future<bool>

Tries to acquire the lock to execute an action and returns true if the lock was acquired before the timeout expires, otherwise the acquisition attempt is canceled and false is returned.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited