1 /* 2 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 package jdk.vm.ci.options; 24 25 import java.util.*; 26 27 /** 28 * Helper class used to load option descriptors. Only to be used in the slow-path. 29 */ 30 public class OptionsLoader { 31 public static final SortedMap<String, OptionDescriptor> options = new TreeMap<>(); 32 33 /** 34 * Initializes {@link #options} from {@link Options} services. 35 */ 36 static { 37 for (OptionDescriptors opts : ServiceLoader.load(OptionDescriptors.class, OptionsLoader.class.getClassLoader())) { 38 for (OptionDescriptor desc : opts) { 39 String name = desc.getName(); 40 OptionDescriptor existing = options.put(name, desc); 41 assert existing == null : "Option named \"" + name + "\" has multiple definitions: " + existing.getLocation() + " and " + desc.getLocation(); 42 } 43 } 44 } 45 }