01: /*
02: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
03: *
04: * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
05: *
06: * The contents of this file are subject to the terms of either the GNU General
07: * Public License Version 2 only ("GPL") or the Common Development and Distribution
08: * License("CDDL") (collectively, the "License"). You may not use this file except in
09: * compliance with the License. You can obtain a copy of the License at
10: * http://www.netbeans.org/cddl-gplv2.html or nbbuild/licenses/CDDL-GPL-2-CP. See the
11: * License for the specific language governing permissions and limitations under the
12: * License. When distributing the software, include this License Header Notice in
13: * each file and include the License file at nbbuild/licenses/CDDL-GPL-2-CP. Sun
14: * designates this particular file as subject to the "Classpath" exception as
15: * provided by Sun in the GPL Version 2 section of the License file that
16: * accompanied this code. If applicable, add the following below the License Header,
17: * with the fields enclosed by brackets [] replaced by your own identifying
18: * information: "Portions Copyrighted [year] [name of copyright owner]"
19: *
20: * Contributor(s):
21: *
22: * The Original Software is NetBeans. The Initial Developer of the Original Software
23: * is Sun Microsystems, Inc. Portions Copyright 1997-2007 Sun Microsystems, Inc. All
24: * Rights Reserved.
25: *
26: * If you wish your version of this file to be governed by only the CDDL or only the
27: * GPL Version 2, indicate your decision by adding "[Contributor] elects to include
28: * this software in this distribution under the [CDDL or GPL Version 2] license." If
29: * you do not indicate a single choice of license, a recipient has the option to
30: * distribute your version of this file under either the CDDL, the GPL Version 2 or
31: * to extend the choice of license to its licensees as provided above. However, if
32: * you add GPL Version 2 code and therefore, elected the GPL Version 2 license, then
33: * the option applies only if the new code is made subject to such option by the
34: * copyright holder.
35: */
36:
37: package org.netbeans.installer.downloader.dispatcher.impl;
38:
39: import org.netbeans.installer.downloader.dispatcher.Process;
40: import org.netbeans.installer.utils.ErrorManager;
41: import org.netbeans.installer.utils.helper.NbiThread;
42:
43: /**
44: * @author Danila_Dugurov
45: */
46: public class Worker extends NbiThread {
47: /////////////////////////////////////////////////////////////////////////////////
48: // Instance
49: Process current;
50:
51: public Worker() {
52: setDaemon(true);
53: }
54:
55: // if worker busy return false
56: public synchronized boolean setCurrent(Process newCurrent) {
57: if (!isFree()) {
58: return false;
59: }
60: this .current = newCurrent;
61: notifyAll();
62: return true;
63: }
64:
65: public synchronized boolean isFree() {
66: return current == null;
67: }
68:
69: @Override
70: public void run() {
71: while (true) {
72: try {
73: Thread.interrupted();
74: synchronized (this ) {
75: if (current == null) {
76: wait();
77: if (isFree()) {
78: continue;
79: }
80: }
81: }
82: current.init();
83: current.run();
84: } catch (InterruptedException e) {
85: ErrorManager.notifyDebug("Interrupted", e); // NOI18N
86: } finally {
87: synchronized (this) {
88: current = null;
89: }
90: }
91: }
92: }
93: }
|