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

NAME
       DBM::Deep::Storage - abstract base class	for storage

   flush()
       This flushes the	filehandle. This takes no parameters and returns
       nothing.

   is_writable()
       This takes no parameters. It returns a boolean saying if	this
       filehandle is writable.

       Taken from <http://www.perlmonks.org/?node_id=691054/>.

LOCKING
       This is where the actual	locking	of the storage medium is performed.
       Nested locking is supported.

       NOTE: It	is unclear what	will happen if a read lock is taken, then a
       write lock is taken as a	nested lock, then the write lock is released.

       Currently, the only locking method supported is flock(1). This is a
       whole-file lock.	In the future, more granular locking may be supported.
       The API for that	is unclear right now.

       The following methods manage the	locking	status.	In all cases, they
       take a DBM::Deep	object and returns nothing.

       o   lock_exclusive( $obj	)

	   Take	a lock usable for writing.

       o   lock_shared(	$obj )

	   Take	a lock usable for reading.

       o   unlock( $obj	)

	   Releases the	last lock taken. If this is the	outermost lock,	then
	   the object is actually unlocked.

perl v5.32.1			  2018-05-20		 DBM::Deep::Storage(3)

NAME | LOCKING

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