Thread::Semaphore

Provides a mechanism to regulate access to resources. Semaphores are more general than locks because they aren’t tied to a particular scalar. They can have values other than 0 or 1 and can be incremented or decremented by a specified number.

Get Perl in a Nutshell, 2nd Edition now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.