Mercurial > hg > truffle
view graal/com.oracle.max.base/src/com/sun/max/collect/IdentityHashMapping.java @ 4213:e4cfa571d8c4
Do not emit stack-to-stack moves.
author | Christian Wimmer <Christian.Wimmer@Oracle.com> |
---|---|
date | Tue, 03 Jan 2012 18:47:27 -0800 |
parents | bc8527f3071c |
children |
line wrap: on
line source
/* * Copyright (c) 2007, 2011, 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 com.sun.max.collect; import java.util.*; /** */ public class IdentityHashMapping<K, V> implements Mapping<K, V> { private final Map<K, V> delegate; public IdentityHashMapping() { delegate = new IdentityHashMap<>(); } public IdentityHashMapping(int expectedMaxSize) { delegate = new IdentityHashMap<>(expectedMaxSize); } public synchronized V put(K key, V value) { return delegate.put(key, value); } public synchronized V get(K key) { final V value = delegate.get(key); return value; } public synchronized boolean containsKey(K key) { return delegate.containsKey(key); } public int length() { return delegate.size(); } public void clear() { delegate.clear(); } public V remove(K key) { return delegate.remove(key); } public IterableWithLength<K> keys() { return new IterableWithLength<K>() { public int size() { return delegate.size(); } public Iterator<K> iterator() { return delegate.keySet().iterator(); } }; } public IterableWithLength<V> values() { return new IterableWithLength<V>() { public int size() { return delegate.size(); } public Iterator<V> iterator() { return delegate.values().iterator(); } }; } }