final class Semaphore extends Serializable
An asynchronous semaphore, which is a generalization of a mutex. Semaphores have a certain number of permits, which can be held and released concurrently by different parties. Attempts to acquire more permits than available result in the acquiring fiber being suspended until the specified number of permits become available.
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- def available: UIO[Long]
The number of permits currently available.
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- def withPermit[R, E, A](task: ZIO[R, E, A]): ZIO[R, E, A]
Acquires a permit, executes the action and releases the permit right after.
- def withPermitManaged[R, E]: ZManaged[R, E, Unit]
Acquires a permit in a zio.ZManaged and releases the permit in the finalizer.
- def withPermits[R, E, A](n: Long)(task: ZIO[R, E, A]): ZIO[R, E, A]
Acquires
npermits, executes the action and releases the permits right after. - def withPermitsManaged[R, E](n: Long): ZManaged[R, E, Unit]
Acquires
npermits in a zio.ZManaged and releases the permits in the finalizer.