NAME

Genezzo::Contrib::Clustered::GLock::GTXLock - Transaction locking for Genezzo

SYNOPSIS

   my $gtxLock = GTXLock->new();
   $gtxLock->lock(lock => $bnum, shared => 1);
   $gtxLock->unlockAll();

DESCRIPTION

Retains hash of all locks held by transaction.

FUNCTIONS

new

Creates GTXLock

lock (lock => NAME, shared => SHARED)

Locks lock with name NAME. Shared if SHARED=1, otherwise Exclusive (default). Uses a blocking lock call. If lock is currently held Shared promotes to Exclusive. Adds lock to hash of all locks held by object.

unlockAll

Unlocks all locks held by object.

demoteAll

Demotes all locks held by object to shared mode.

AUTHOR

Eric Rollins, rollins@acm.org

Copyright (c) 2005 Eric Rollins. All rights reserved.

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

Address bug reports and comments to rollins@acm.org

For more information, please visit the Genezzo homepage at http://www.genezzo.com