1Session::Lock::Sybase(3U)ser Contributed Perl DocumentatiSoenssion::Lock::Sybase(3)
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6 Apache::Session::Lock::Sybase - Provides mutual exclusion using Sybase
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9 use Apache::Session::Lock::Sybase;
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11 my $locker = new Apache::Session::Lock::Sybase;
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13 $locker->acquire_read_lock($ref);
14 $locker->acquire_write_lock($ref);
15 $locker->release_read_lock($ref);
16 $locker->release_write_lock($ref);
17 $locker->release_all_locks($ref);
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20 Apache::Session::Lock::Sybase fulfills the locking interface of
21 Apache::Session. Mutual exclusion is achieved through the use of
22 Sybase's sp_getapplock and sp_releaseapplock functions. Sybase does not
23 support the notion of read and write locks, so this module only sup‐
24 ports exclusive locks. When you request a shared read lock, it is
25 instead promoted to an exclusive write lock.
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28 The module must know how to connect to your MySQL database to acquire
29 locks. You must provide a datasource name, a user name, and a pass‐
30 word. These options are passed in the usual Apache::Session style, and
31 are very similar to the options for Apache::Session::Store::Sybase.
32 Example:
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34 tie %hash, 'Apache::Session::Sybase', $id, {
35 LockDataSource => 'dbi:sybase:database',
36 LockUserName => 'database_user',
37 LockPassword => 'K00l'
38 };
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40 Instead, you may pass in an already opened DBI handle to your database.
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42 tie %hash, 'Apache::Session::Sybase', $id, {
43 LockHandle => $dbh
44 };
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47 This module was written by Oliver Maul <oli@42.nu>.
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50 Apache::Session
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54perl v5.8.8 2004-02-24 Session::Lock::Sybase(3)