NAME

       APR::ThreadRWLock - Perl API for APR thread read/write locks

Synopsis

         use APR::ThreadRWLock ();

         my $mutex = APR::ThreadRWLock->new($r->pool);
         $mutex->rdlock;
         $mutex->wrlock;
         $mutex->tryrdlock;
         $mutex->trywrlock;
         $mutex->unlock;

Description

       "APR::ThreadRWLock" interfaces APR thread read/write locks.

       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!

API

       "APR::ThreadRWLock" provides the following functions and/or methods:

Unsupported API

       "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();

       obj: $lock ( "APR::ThreadRWLock object" )
           the lock to destroy.

       ret: no return value
       since: subject to change

   "rdlock"
       META: Autogenerated - needs to be reviewed/completed

       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();

       obj: $lock ( "APR::ThreadRWLock object" )
           the lock on which to acquire the lock.

       ret: $ret ( integer )
       since: subject to change

   "tryrdlock"
       META: Autogenerated - needs to be reviewed/completed

       Performs the same operation as "rdlock" with the exception that the function shall fail if
       the thread would be blocked.

         $ret = $lock->tryrdlock();

       obj: $lock ( "APR::ThreadRWLock object" )
           the lock on which to acquire the lock.

       ret: $ret ( integer )
       since: subject to change

   "wrlock"
       META: Autogenerated - needs to be reviewed/completed

       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();

       obj: $lock ( "APR::ThreadRWLock object" )
           the lock on which to acquire the lock.

       ret: $ret ( integer )
       since: subject to change

   "trywrlock"
       META: Autogenerated - needs to be reviewed/completed

       Performs the same operation as "wrlock" with the exception that the function shall fail if
       the thread would be blocked.

         $ret = $lock->trywrlock();

       obj: $lock ( "APR::ThreadRWLock object" )
           the lock on which to acquire the lock.

       ret: $ret ( integer )
       since: subject to change

   "new"
       Create a new lock

         my $lock = APR::ThreadRWLock->new($p);

       obj: "APR::ThreadRWLock" ( class name )
       arg1: $p ( "APR::Pool object" )
       ret: $lock ( "APR::ThreadRWLock object" )
       since: subject to change

   "pool_get"
       META: Autogenerated - needs to be reviewed/completed

       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: $obj ( "APR::ThreadRWLock object" )
       ret: $ret ( "APR::Pool object" )
           apr_pool_t the pool

       since: subject to change

   "unlock"
       META: Autogenerated - needs to be reviewed/completed

       Release the lock for the given lock.

         $ret = $lock->unlock();

       obj: $lock ( "APR::ThreadRWLock object" )
           the lock from which to release the lock.

       ret: $ret ( integer )
       since: subject to change

See Also

       mod_perl 2.0 documentation.

Copyright

       mod_perl 2.0 and its core modules are copyrighted under The Apache Software License,
       Version 2.0.

Authors

       The mod_perl development team and numerous contributors.

perl v5.36.0                       libapache2-mod-perl2-2.0.12::docs::api::APR::ThreadRWLock(3pm)