01: /*
02: * Copyright (c) 1998-2008 Caucho Technology -- all rights reserved
03: *
04: * This file is part of Resin(R) Open Source
05: *
06: * Each copy or derived work must preserve the copyright notice and this
07: * notice unmodified.
08: *
09: * Resin Open Source is free software; you can redistribute it and/or modify
10: * it under the terms of the GNU General Public License as published by
11: * the Free Software Foundation; either version 2 of the License, or
12: * (at your option) any later version.
13: *
14: * Resin Open Source is distributed in the hope that it will be useful,
15: * but WITHOUT ANY WARRANTY; without even the implied warranty of
16: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
17: * of NON-INFRINGEMENT. See the GNU General Public License for more
18: * details.
19: *
20: * You should have received a copy of the GNU General Public License
21: * along with Resin Open Source; if not, write to the
22: *
23: * Free Software Foundation, Inc.
24: * 59 Temple Place, Suite 330
25: * Boston, MA 02111-1307 USA
26: *
27: * @author Scott Ferguson
28: */
29:
30: package com.caucho.server.hmux;
31:
32: import java.lang.ref.*;
33: import java.util.*;
34: import java.io.*;
35:
36: import com.caucho.loader.*;
37: import com.caucho.vfs.*;
38:
39: /**
40: * Manages hmux extensions.
41: */
42: public class HmuxManager {
43: private static EnvironmentLocal<HmuxManager> _localManager = new EnvironmentLocal<HmuxManager>();
44:
45: private ClassLoader _classLoader;
46:
47: private HashMap<Integer, WeakReference<HmuxExtension>> _extensionMap = new HashMap<Integer, WeakReference<HmuxExtension>>();
48:
49: private HmuxManager() {
50: _classLoader = Thread.currentThread().getContextClassLoader();
51: }
52:
53: public static HmuxManager getLocal() {
54: synchronized (_localManager) {
55: HmuxManager manager = _localManager.get();
56:
57: if (manager == null) {
58: manager = new HmuxManager();
59: _localManager.set(manager);
60: }
61:
62: return manager;
63: }
64: }
65:
66: public HmuxExtension getExtension(Integer id) {
67: WeakReference<HmuxExtension> ref = _extensionMap.get(id);
68:
69: if (ref != null)
70: return ref.get();
71: else
72: return null;
73: }
74:
75: public void putExtension(Integer id, HmuxExtension extension) {
76: _extensionMap.put(id, new WeakReference<HmuxExtension>(
77: extension));
78: }
79: }
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