1/*
2 * Copyright (c) 2002, 2011, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.  Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26package com.sun.jndi.ldap.pool;
27
28/**
29 * Thread that wakes up periodically and closes expired, unused connections.
30 *
31 * @author Rosanna Lee
32 */
33final public class PoolCleaner implements Runnable {
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 = pools.clone();
45    }
46
47    @Override
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}
69