1DBM::Deep::Storage(3) User Contributed Perl DocumentationDBM::Deep::Storage(3)
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NAME

6       DBM::Deep::Storage - abstract base class for storage
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8   flush()
9       This flushes the filehandle. This takes no parameters and returns
10       nothing.
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12   is_writable()
13       This takes no parameters. It returns a boolean saying if this
14       filehandle is writable.
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16       Taken from <http://www.perlmonks.org/?node_id=691054/>.
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LOCKING

19       This is where the actual locking of the storage medium is performed.
20       Nested locking is supported.
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22       NOTE: It is unclear what will happen if a read lock is taken, then a
23       write lock is taken as a nested lock, then the write lock is released.
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25       Currently, the only locking method supported is flock(1). This is a
26       whole-file lock. In the future, more granular locking may be supported.
27       The API for that is unclear right now.
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29       The following methods manage the locking status. In all cases, they
30       take a DBM::Deep object and returns nothing.
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32       ·   lock_exclusive( $obj )
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34           Take a lock usable for writing.
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36       ·   lock_shared( $obj )
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38           Take a lock usable for reading.
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40       ·   unlock( $obj )
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42           Releases the last lock taken. If this is the outermost lock, then
43           the object is actually unlocked.
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47perl v5.28.0                      2018-07-14             DBM::Deep::Storage(3)