01: /*
02: * Copyright 2002 Sun Microsystems, Inc. All Rights Reserved.
03: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
04: *
05: * This code is free software; you can redistribute it and/or modify it
06: * under the terms of the GNU General Public License version 2 only, as
07: * published by the Free Software Foundation. Sun designates this
08: * particular file as subject to the "Classpath" exception as provided
09: * by Sun in the LICENSE file that accompanied this code.
10: *
11: * This code is distributed in the hope that it will be useful, but WITHOUT
12: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13: * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14: * version 2 for more details (a copy is included in the LICENSE file that
15: * accompanied this code).
16: *
17: * You should have received a copy of the GNU General Public License version
18: * 2 along with this work; if not, write to the Free Software Foundation,
19: * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20: *
21: * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22: * CA 95054 USA or visit www.sun.com if you need additional information or
23: * have any questions.
24: */
25:
26: package com.sun.jndi.ldap.pool;
27:
28: /**
29: * Thread that wakes up periodically and closes expired, unused connections.
30: *
31: * @author Rosanna Lee
32: */
33: final public class PoolCleaner extends Thread {
34: final private Pool[] pools;
35: final private long period;
36:
37: /**
38: * @param period ms to wait between cleaning
39: * @param pools non-null array of Pools to clean
40: */
41: public PoolCleaner(long period, Pool[] pools) {
42: super ();
43: this .period = period;
44: this .pools = (Pool[]) pools.clone();
45: setDaemon(true);
46: }
47:
48: public void run() {
49: long threshold;
50: while (true) {
51: synchronized (this ) {
52: // Wait for duration of period ms
53: try {
54: wait(period);
55: } catch (InterruptedException ignore) {
56: }
57:
58: // Connections idle since threshold have expired
59: threshold = System.currentTimeMillis() - period;
60: for (int i = 0; i < pools.length; i++) {
61: if (pools[i] != null) {
62: pools[i].expire(threshold);
63: }
64: }
65: }
66: }
67: }
68: }
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