01: /*
02: * XAPool: Open Source XA JDBC Pool
03: * Copyright (C) 2003 Objectweb.org
04: * Initial Developer: Lutris Technologies Inc.
05: * Contact: xapool-public@lists.debian-sf.objectweb.org
06: *
07: * This library is free software; you can redistribute it and/or
08: * modify it under the terms of the GNU Lesser General Public
09: * License as published by the Free Software Foundation; either
10: * version 2.1 of the License, or any later version.
11: *
12: * This library is distributed in the hope that it will be useful,
13: * but WITHOUT ANY WARRANTY; without even the implied warranty of
14: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15: * Lesser General Public License for more details.
16: *
17: * You should have received a copy of the GNU Lesser General Public
18: * License along with this library; if not, write to the Free Software
19: * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
20: * USA
21: */
22: package org.enhydra.jdbc.pool;
23:
24: /**
25: * PoolKeeper class allows to clean up automatically dead and
26: * expired objects.
27: */
28: public class PoolKeeper implements Runnable {
29:
30: private long sleepTime; // timeout between 2 clean up
31: private GenericPool pool; // the pool to clean up
32: private boolean running = true;
33:
34: /**
35: * constructor, called by GenericPool (any kind of object)
36: */
37: public PoolKeeper(long sleepTime, GenericPool pool) {
38: this .sleepTime = sleepTime;
39: this .pool = pool;
40: }
41:
42: public void stop() {
43: synchronized (this ) {
44: running = false;
45: }
46: }
47:
48: /**
49: * run method. allows to clean up the pool
50: */
51: public void run() {
52: while (running && !Thread.interrupted()) {
53: try {
54: synchronized (this ) {
55: wait(this .sleepTime); // wait for timeout ms before attack
56: }
57: } catch (InterruptedException e) {
58: break;
59: }
60: this .pool.cleanUp(); // clean up the Pool and reallocate objects
61: }
62: // release the pool.
63: this.pool = null;
64: }
65:
66: }
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