| /* |
| * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| package org.graalvm.compiler.debug.internal; |
| |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| |
| /** |
| * A node in a tree of {@link DebugValue}s. |
| */ |
| public class DebugValueMap { |
| |
| private static final List<DebugValueMap> topLevelMaps = new ArrayList<>(); |
| |
| private long[] values; |
| private List<DebugValueMap> children; |
| private String name; |
| |
| public DebugValueMap(String name) { |
| this.name = name; |
| } |
| |
| public void setCurrentValue(int index, long l) { |
| ensureSize(index); |
| values[index] = l; |
| } |
| |
| public long getCurrentValue(int index) { |
| ensureSize(index); |
| return values[index]; |
| } |
| |
| public void clearChildren() { |
| if (children != null) { |
| children.clear(); |
| } |
| } |
| |
| public void reset() { |
| if (values != null) { |
| Arrays.fill(values, 0L); |
| } |
| if (children != null) { |
| for (DebugValueMap child : children) { |
| child.reset(); |
| } |
| } |
| } |
| |
| private void ensureSize(int index) { |
| if (values == null) { |
| values = new long[index + 1]; |
| } |
| if (values.length <= index) { |
| values = Arrays.copyOf(values, index + 1); |
| } |
| } |
| |
| private int capacity() { |
| return (values == null) ? 0 : values.length; |
| } |
| |
| public void addChild(DebugValueMap map) { |
| if (children == null) { |
| children = new ArrayList<>(4); |
| } |
| children.add(map); |
| } |
| |
| public List<DebugValueMap> getChildren() { |
| if (children == null) { |
| return Collections.emptyList(); |
| } else { |
| return Collections.unmodifiableList(children); |
| } |
| } |
| |
| public boolean hasChildren() { |
| return children != null && !children.isEmpty(); |
| } |
| |
| public String getName() { |
| return this.name; |
| } |
| |
| @Override |
| public String toString() { |
| return "DebugValueMap<" + getName() + ">"; |
| } |
| |
| public static synchronized void registerTopLevel(DebugValueMap map) { |
| topLevelMaps.add(map); |
| } |
| |
| public static synchronized List<DebugValueMap> getTopLevelMaps() { |
| return topLevelMaps; |
| } |
| |
| public void normalize() { |
| if (hasChildren()) { |
| Map<String, DebugValueMap> occurred = new HashMap<>(); |
| for (DebugValueMap map : children) { |
| String mapName = map.getName(); |
| if (!occurred.containsKey(mapName)) { |
| occurred.put(mapName, map); |
| map.normalize(); |
| } else { |
| occurred.get(mapName).mergeWith(map); |
| occurred.get(mapName).normalize(); |
| } |
| } |
| |
| if (occurred.values().size() < children.size()) { |
| // At least one duplicate was found. |
| children.clear(); |
| for (DebugValueMap map : occurred.values()) { |
| addChild(map); |
| map.normalize(); |
| } |
| } |
| } |
| } |
| |
| private void mergeWith(DebugValueMap map) { |
| if (map.hasChildren()) { |
| if (hasChildren()) { |
| children.addAll(map.children); |
| } else { |
| children = map.children; |
| } |
| map.children = null; |
| } |
| |
| int size = Math.max(this.capacity(), map.capacity()); |
| ensureSize(size); |
| for (int i = 0; i < size; ++i) { |
| long curValue = getCurrentValue(i); |
| long otherValue = map.getCurrentValue(i); |
| setCurrentValue(i, curValue + otherValue); |
| } |
| } |
| |
| public void group() { |
| if (this.hasChildren()) { |
| List<DebugValueMap> oldChildren = new ArrayList<>(this.children); |
| this.children.clear(); |
| for (DebugValueMap map : oldChildren) { |
| mergeWith(map); |
| } |
| } |
| } |
| } |