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apache_mod_perl-108~358::mod_perl-2.0.7::docs::api::APR::ThreadRWLock(3)0.7::docs::api::APR::ThreadRWLock(3)



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 v5.16.2                        apache_mod_pe2011-02-07::mod_perl-2.0.7::docs::api::APR::ThreadRWLock(3)