001: /*
002: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
003: *
004: * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
005: *
006: * The contents of this file are subject to the terms of either the GNU
007: * General Public License Version 2 only ("GPL") or the Common
008: * Development and Distribution License("CDDL") (collectively, the
009: * "License"). You may not use this file except in compliance with the
010: * License. You can obtain a copy of the License at
011: * http://www.netbeans.org/cddl-gplv2.html
012: * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
013: * specific language governing permissions and limitations under the
014: * License. When distributing the software, include this License Header
015: * Notice in each file and include the License file at
016: * nbbuild/licenses/CDDL-GPL-2-CP. Sun designates this
017: * particular file as subject to the "Classpath" exception as provided
018: * by Sun in the GPL Version 2 section of the License file that
019: * accompanied this code. If applicable, add the following below the
020: * License Header, with the fields enclosed by brackets [] replaced by
021: * your own identifying information:
022: * "Portions Copyrighted [year] [name of copyright owner]"
023: *
024: * Contributor(s):
025: * The Original Software is NetBeans. The Initial Developer of the Original
026: * Software is Sun Microsystems, Inc. Portions Copyright 1997-2006 Sun
027: * Microsystems, Inc. All Rights Reserved.
028: *
029: * If you wish your version of this file to be governed by only the CDDL
030: * or only the GPL Version 2, indicate your decision by adding
031: * "[Contributor] elects to include this software in this distribution
032: * under the [CDDL or GPL Version 2] license." If you do not indicate a
033: * single choice of license, a recipient has the option to distribute
034: * your version of this file under either the CDDL, the GPL Version 2 or
035: * to extend the choice of license to its licensees as provided above.
036: * However, if you add GPL Version 2 code and therefore, elected the GPL
037: * Version 2 license, then the option applies only if the new code is
038: * made subject to such option by the copyright holder.
039: */
040:
041: package org.netbeans.lib.profiler.results;
042:
043: import java.util.HashSet;
044: import java.util.Iterator;
045: import java.util.Set;
046: import java.util.Vector;
047: import java.util.concurrent.Executor;
048: import java.util.concurrent.Executors;
049:
050: /**
051: * A common functionality for DataManagers
052: *
053: * @author Ian Formanek
054: */
055: public abstract class DataManager {
056: //~ Instance fields ----------------------------------------------------------------------------------------------------------
057:
058: private Executor eventDispatcher = Executors.newCachedThreadPool();
059: private final Set listeners = new HashSet();
060:
061: //~ Methods ------------------------------------------------------------------------------------------------------------------
062:
063: // --- Listeners ---------------------------------------------------------------
064:
065: /**
066: * Adds new threadData Listener.
067: *
068: * @param listener threadData listener to add
069: */
070: public void addDataListener(DataManagerListener listener) {
071: listeners.add(listener);
072: }
073:
074: /**
075: * Removes threadData listener.
076: *
077: * @param listener threadData listener to remove
078: */
079: public void removeDataListener(DataManagerListener listener) {
080: listeners.remove(listener);
081: }
082:
083: /**
084: * Notifies all listeners about the threadData change.
085: */
086: protected void fireDataChanged() {
087: if (listeners.isEmpty()) {
088: return;
089: }
090:
091: Set toNotify;
092:
093: synchronized (listeners) {
094: toNotify = new HashSet(listeners);
095: }
096:
097: final Set listenerSet = toNotify;
098:
099: Iterator iterator = toNotify.iterator();
100:
101: while (iterator.hasNext()) {
102: final DataManagerListener listener = ((DataManagerListener) iterator
103: .next());
104: eventDispatcher.execute(new Runnable() {
105: public void run() {
106: listener.dataChanged();
107: }
108: });
109: }
110: }
111:
112: /**
113: * Notifies all listeners about the reset of threads data.
114: */
115: protected void fireDataReset() {
116: if (listeners.isEmpty()) {
117: return;
118: }
119:
120: Set toNotify;
121:
122: synchronized (listeners) {
123: toNotify = new HashSet(listeners);
124: }
125:
126: final Set listenerSet = toNotify;
127:
128: Iterator iterator = toNotify.iterator();
129:
130: while (iterator.hasNext()) {
131: final DataManagerListener listener = ((DataManagerListener) iterator
132: .next());
133: eventDispatcher.execute(new Runnable() {
134: public void run() {
135: listener.dataReset();
136: }
137: });
138: }
139: }
140: }
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