| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.commons.lang3; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| import java.util.stream.Stream; |
| |
| import org.apache.commons.lang3.arch.Processor; |
| |
| /** |
| * An utility class for the os.arch System Property. The class defines methods for |
| * identifying the architecture of the current JVM. |
| * <p> |
| * Important: The os.arch System Property returns the architecture used by the JVM |
| * not of the operating system. |
| * </p> |
| * @since 3.6 |
| */ |
| public class ArchUtils { |
| |
| private static final Map<String, Processor> ARCH_TO_PROCESSOR; |
| |
| static { |
| ARCH_TO_PROCESSOR = new HashMap<>(); |
| init(); |
| } |
| |
| private static void init() { |
| init_X86_32Bit(); |
| init_X86_64Bit(); |
| init_IA64_32Bit(); |
| init_IA64_64Bit(); |
| init_PPC_32Bit(); |
| init_PPC_64Bit(); |
| } |
| |
| private static void init_X86_32Bit() { |
| final Processor processor = new Processor(Processor.Arch.BIT_32, Processor.Type.X86); |
| addProcessors(processor, "x86", "i386", "i486", "i586", "i686", "pentium"); |
| } |
| |
| private static void init_X86_64Bit() { |
| final Processor processor = new Processor(Processor.Arch.BIT_64, Processor.Type.X86); |
| addProcessors(processor, "x86_64", "amd64", "em64t", "universal"); |
| } |
| |
| private static void init_IA64_32Bit() { |
| final Processor processor = new Processor(Processor.Arch.BIT_32, Processor.Type.IA_64); |
| addProcessors(processor, "ia64_32", "ia64n"); |
| } |
| |
| private static void init_IA64_64Bit() { |
| final Processor processor = new Processor(Processor.Arch.BIT_64, Processor.Type.IA_64); |
| addProcessors(processor, "ia64", "ia64w"); |
| } |
| |
| private static void init_PPC_32Bit() { |
| final Processor processor = new Processor(Processor.Arch.BIT_32, Processor.Type.PPC); |
| addProcessors(processor, "ppc", "power", "powerpc", "power_pc", "power_rs"); |
| } |
| |
| private static void init_PPC_64Bit() { |
| final Processor processor = new Processor(Processor.Arch.BIT_64, Processor.Type.PPC); |
| addProcessors(processor, "ppc64", "power64", "powerpc64", "power_pc64", "power_rs64"); |
| } |
| |
| /** |
| * Adds the given {@link Processor} with the given key {@link String} to the map. |
| * |
| * @param key The key as {@link String}. |
| * @param processor The {@link Processor} to add. |
| * @throws IllegalStateException If the key already exists. |
| */ |
| private static void addProcessor(final String key, final Processor processor) { |
| if (ARCH_TO_PROCESSOR.containsKey(key)) { |
| throw new IllegalStateException("Key " + key + " already exists in processor map"); |
| } |
| ARCH_TO_PROCESSOR.put(key, processor); |
| } |
| |
| /** |
| * Adds the given {@link Processor} with the given keys to the map. |
| * |
| * @param keys The keys. |
| * @param processor The {@link Processor} to add. |
| * @throws IllegalStateException If the key already exists. |
| */ |
| private static void addProcessors(final Processor processor, final String... keys) { |
| Stream.of(keys).forEach(e -> addProcessor(e, processor)); |
| } |
| |
| /** |
| * Returns a {@link Processor} object of the current JVM. |
| * |
| * <p> |
| * Important: The os.arch System Property returns the architecture used by the JVM |
| * not of the operating system. |
| * </p> |
| * |
| * @return A {@link Processor} when supported, else {@code null}. |
| */ |
| public static Processor getProcessor() { |
| return getProcessor(SystemUtils.OS_ARCH); |
| } |
| |
| /** |
| * Returns a {@link Processor} object the given value {@link String}. The {@link String} must be |
| * like a value returned by the os.arch System Property. |
| * |
| * @param value A {@link String} like a value returned by the os.arch System Property. |
| * @return A {@link Processor} when it exists, else {@code null}. |
| */ |
| public static Processor getProcessor(final String value) { |
| return ARCH_TO_PROCESSOR.get(value); |
| } |
| |
| } |