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
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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: *
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025: * The Original Software is NetBeans. The Initial Developer of the Original
026: * Software is Sun Microsystems, Inc. Portions Copyright 1997-2006 Sun
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030: * or only the GPL Version 2, indicate your decision by adding
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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
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039: */
040:
041: package org.netbeans.lib.profiler.results.cpu.marking;
042:
043: import org.netbeans.lib.profiler.global.TransactionalSupport;
044: import org.netbeans.lib.profiler.results.cpu.cct.CPUCCTVisitorAdapter;
045: import org.netbeans.lib.profiler.results.cpu.cct.nodes.CategoryCPUCCTNode;
046: import java.util.Stack;
047:
048: /**
049: *
050: * @author Jaroslav Bachorik
051: */
052: public class MarkBasedNodeVisitor extends CPUCCTVisitorAdapter
053: implements MarkingEngine.StateObserver {
054: //~ Instance fields ----------------------------------------------------------------------------------------------------------
055:
056: volatile boolean resetFlag = false;
057: private Mark parentMark = null;
058: private Stack markStack;
059: private final TransactionalSupport transaction = new TransactionalSupport();
060:
061: //~ Constructors -------------------------------------------------------------------------------------------------------------
062:
063: /**
064: * Creates a new instance of MarkTimer
065: */
066: public MarkBasedNodeVisitor() {
067: this .markStack = new Stack();
068: }
069:
070: //~ Methods ------------------------------------------------------------------------------------------------------------------
071:
072: public void afterWalk() {
073: markStack.clear();
074: parentMark = null;
075: transaction.endTrans();
076: }
077:
078: public void beforeWalk() {
079: transaction.beginTrans(true);
080: parentMark = null;
081: resetFlag = false;
082: }
083:
084: public void beginTrans(final boolean mutable) {
085: transaction.beginTrans(mutable);
086: }
087:
088: public void endTrans() {
089: if (resetFlag) {
090: this .markStack = new Stack();
091: resetFlag = false;
092: }
093:
094: transaction.endTrans();
095: }
096:
097: public synchronized void onReset() {
098: resetFlag = true;
099: transaction.endTrans();
100: }
101:
102: public void stateChanged(MarkingEngine instance) {
103: reset();
104: }
105:
106: public void visit(final CategoryCPUCCTNode node) {
107: parentMark = (Mark) (markStack.isEmpty() ? null : markStack
108: .peek());
109: markStack.push(node.getMark());
110: }
111:
112: public void visitPost(final CategoryCPUCCTNode node) {
113: markStack.pop();
114: parentMark = (Mark) (markStack.isEmpty() ? null : markStack
115: .peek());
116: }
117:
118: protected final Mark getCurrentMark() {
119: return (Mark) (markStack.isEmpty() ? Mark.DEFAULT : markStack
120: .peek());
121: }
122:
123: protected final Mark getParentMark() {
124: return (parentMark != null) ? parentMark : Mark.DEFAULT;
125: }
126:
127: protected synchronized boolean isReset() {
128: return resetFlag;
129: }
130:
131: private void reset() {
132: resetFlag = true;
133: }
134: }
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