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RWLock(3) User Contributed Perl Documentation RWLock(3)
NAME
Coro::RWLock - reader/write locks
SYNOPSIS
use Coro;
$lck = new Coro::RWLock;
$lck->rdlock; # acquire read lock
$lck->unlock; # unlock lock again
# or:
$lck->wrlock; # acquire write lock
$lck->tryrdlock; # try a readlock
$lck->trywrlock; # try a write lock
DESCRIPTION
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).
You don't have to load "Coro::RWLock" manually, it will be loaded
automatically when you "use Coro" and call the "new" constructor.
$l = new Coro::RWLock;
Create a new reader/writer lock.
$l->rdlock
Acquire a read lock.
$l->tryrdlock
Try to acquire a read lock.
$l->wrlock
Acquire a write lock.
$l->trywrlock
Try to acquire a write lock.
$l->unlock
Give up a previous "rdlock" or "wrlock".
AUTHOR
Marc Lehmann <schmorp@schmorp.de>
http://home.schmorp.de/
perl v5.14.2 2011-11-11 RWLock(3)
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