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  • Committer: Monty Taylor
  • Date: 2010-08-20 18:36:37 UTC
  • mto: (1723.2.1 staging)
  • mto: This revision was merged to the branch mainline in revision 1724.
  • Revision ID: mordred@inaugust.com-20100820183637-eqb93k9pqtg83v53
Fix doxygen config.

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User Defined Locks
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===================
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A user can create a "lock" which is scoped to their user space. Multiple
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session of the user can see the lock.
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SELECT GET_LOCK();
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SELECT GET_LOCKS();
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SELECT RELEASE_LOCK();
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SELECT RELEASE_LOCK();
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SELECT RELEASE_LOCKS();
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SELECT is_free_lock();
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SELECT is_used_lock();
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If a session should exit, whatever locks it was holding will be deleted.
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.. todo::
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   deleted or released? are locks recursive?
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Please note, get_lock() was designed to be compatible with MySQL. If you
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hold any locks when calling get_lock() they will be released. For this
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reason you may want to consider calling get_locks() instead.
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Information on all barriers can be found in the DATA_DICTIONARY.USER_LOCKS
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table;