Coro::RWLock - reader/write locks


 use Coro::RWLock;

 $lck = new Coro::RWLock;

 $lck->rdlock; # acquire read lock



This module implements reader/write locks. A read can be acquired for read by many coroutines in parallel as long as no writer has locked it (shared access). A single write lock can be acquired when no readers exist. RWLocks basically allow many concurrent readers (without writers) OR a single writer (but no readers).

$l = new Coro::RWLock;

Create a new reader/writer lock.


Acquire a read lock.


Try to acquire a read lock.


Acquire a write lock.


Try to acquire a write lock.


Give up the rwlock.


 Marc Lehmann <>