Apache::Session::Lock::Sybase - Provides mutual exclusion using Sybase

       This module was written by Oliver Maul <oli@42.nu>.

       The module must know how to connect to your MySQL database to acquire locks.  You must provide a
       datasource name, a user name, and a password.  These options are passed in the usual Apache::Session
       style, and are very similar to the options for Apache::Session::Store::Sybase.  Example:

        tie %hash, 'Apache::Session::Sybase', $id, {
            LockDataSource => 'dbi:sybase:database',
            LockUserName   => 'database_user',
            LockPassword   => 'K00l'
        };

       Instead, you may pass in an already opened DBI handle to your database.

        tie %hash, 'Apache::Session::Sybase', $id, {
            LockHandle => $dbh
        };

       Apache::Session::Lock::Sybase fulfills the locking interface of Apache::Session.  Mutual exclusion is
       achieved through the use of Sybase's sp_getapplock and sp_releaseapplock functions. Sybase does not
       support the notion of read and write locks, so this module only supports exclusive locks.  When you
       request a shared read lock, it is instead promoted to an exclusive write lock.

       Apache::Session::Lock::Sybase - Provides mutual exclusion using Sybase

       Apache::Session

perl v5.36.0                                       2022-11-19                 Apache::Session::Lock::Sybase(3pm)

        use Apache::Session::Lock::Sybase;

        my $locker = Apache::Session::Lock::Sybase->new;

        $locker->acquire_read_lock($ref);
        $locker->acquire_write_lock($ref);
        $locker->release_read_lock($ref);
        $locker->release_write_lock($ref);
        $locker->release_all_locks($ref);