APR::ThreadRWLock - Perl API for APR thread read/write locks
use APR::ThreadRWLock (); my $mutex = APR::ThreadRWLock->new($r->pool); $mutex->rdlock; $mutex->wrlock; $mutex->tryrdlock; $mutex->trywrlock; $mutex->unlock;
APR::ThreadRWLock interfaces APR thread read/write locks.
APR::ThreadRWLock
See srclib/apr/locks/unix/thread_rwlock.c in your Apache source tree. At the time of this writing these methods are not supported on all platforms. Thus, check your libraries!
APR::ThreadRWLock provides the following functions and/or methods:
APR::ThreadRWLock also provides auto-generated Perl interface for a few other methods which aren't tested at the moment and therefore their API is a subject to change. These methods will be finalized later as a need arises. If you want to rely on any of the following methods please contact the the mod_perl development mailing list so we can help each other take the steps necessary to shift the method to an officially supported API.
DESTROY
META: Autogenerated - needs to be reviewed/completed
Destroy the lock and free the associated memory.
$lock->DESTROY();
$lock
APR::ThreadRWLock object
the lock to destroy.
rdlock
Acquire the read lock for the given lock. The calling thread acquires the read lock if a writer does not hold the lock and there are no writers blocked on the lock. Otherwize it is put to sleep until these conditions are met.
$ret = $lock->rdlock();
the lock on which to acquire the lock.
$ret
tryrdlock
Performs the same operation as rdlock with the exception that the function shall fail if the thread would be blocked.
$ret = $lock->tryrdlock();
wrlock
Acquire the write lock for the given lock. The calling thread acquires the write lock if if no other thread (reader or writer) holds it. Otherwize it is put to sleep until this condition is met.
$ret = $lock->wrlock();
trywrlock
Performs the same operation as wrlock with the exception that the function shall fail if the thread would be blocked.
$ret = $lock->trywrlock();
new
Create a new lock
my $lock = APR::ThreadRWLock->new($p);
$p
APR::Pool object
pool_get
META: should probably be renamed to pool(), like all other pool accessors
Get the pool used by this thread_lock.
$ret = $obj->pool_get();
$obj
apr_pool_t the pool
unlock
Release the lock for the given lock.
$ret = $lock->unlock();
the lock from which to release the lock.
mod_perl 2.0 documentation.
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The mod_perl development team and numerous contributors.
To install mod_perl2, copy and paste the appropriate command in to your terminal.
cpanm
cpanm mod_perl2
CPAN shell
perl -MCPAN -e shell install mod_perl2
For more information on module installation, please visit the detailed CPAN module installation guide.