$lck = new Coro::RWLock;
$lck->rdlock; # acquire read lock
$lck->unlock; # unlock lock again
$lck->wrlock; # acquire write lock
$lck->tryrdlock; # try a readlock
$lck->trywrlock; # try a write lock
DESCRIPTIONThis 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.
- Acquire a read lock.
- Try to acquire a read lock.
- Acquire a write lock.
- Try to acquire a write lock.
- Give up a previous "rdlock" or "wrlock".