| /* |
| * 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.Collections; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| |
| /** |
| * Registry for allocating a globally unique integer id to each {@link DebugValue}. |
| */ |
| public class KeyRegistry { |
| |
| private static final Map<String, Integer> keyMap = new HashMap<>(); |
| private static final List<DebugValue> debugValues = new ArrayList<>(); |
| |
| /** |
| * Ensures a given debug value is registered. |
| * |
| * @return the globally unique id for {@code value} |
| */ |
| public static synchronized int register(DebugValue value) { |
| String name = value.getName(); |
| if (!keyMap.containsKey(name)) { |
| keyMap.put(name, debugValues.size()); |
| debugValues.add(value); |
| } |
| return keyMap.get(name); |
| } |
| |
| /** |
| * Gets a immutable view of the registered debug values. |
| * |
| * @return a list where {@code get(i).getIndex() == i} |
| */ |
| public static synchronized List<DebugValue> getDebugValues() { |
| return Collections.unmodifiableList(debugValues); |
| } |
| } |