1 /* 2 * Copyright (C) 2014 The Android Open Source Project 3 * Copyright (c) 1995, 2008, Oracle and/or its affiliates. All rights reserved. 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This code is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 only, as 8 * published by the Free Software Foundation. Oracle designates this 9 * particular file as subject to the "Classpath" exception as provided 10 * by Oracle in the LICENSE file that accompanied this code. 11 * 12 * This code is distributed in the hope that it will be useful, but WITHOUT 13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 15 * version 2 for more details (a copy is included in the LICENSE file that 16 * accompanied this code). 17 * 18 * You should have received a copy of the GNU General Public License version 19 * 2 along with this work; if not, write to the Free Software Foundation, 20 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 21 * 22 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 23 * or visit www.oracle.com if you need additional information or have any 24 * questions. 25 */ 26 27 package java.lang; 28 29 /** 30 * Does nothing on Android. 31 */ 32 public final class Compiler { 33 /** 34 * Prevent this class from being instantiated. 35 */ 36 private Compiler() {} // don't make instances 37 38 /** 39 * Compiles the specified class using the JIT compiler and indicates if 40 * compilation has been successful. Does nothing and returns false on 41 * Android. 42 * 43 * @param classToCompile 44 * java.lang.Class the class to JIT compile 45 * @return {@code true} if the compilation has been successful; 46 * {@code false} if it has failed or if there is no JIT compiler 47 * available. 48 */ 49 public static boolean compileClass(Class<?> classToCompile) { 50 return false; 51 } 52 53 /** 54 * Compiles all classes whose name matches the specified name using the JIT 55 * compiler and indicates if compilation has been successful. Does nothing 56 * and returns false on Android. 57 * 58 * @param nameRoot 59 * the string to match class names with. 60 * @return {@code true} if the compilation has been successful; 61 * {@code false} if it has failed or if there is no JIT compiler 62 * available. 63 */ 64 public static boolean compileClasses(String nameRoot) { 65 return false; 66 } 67 68 /** 69 * Executes an operation according to the specified command object. This 70 * method is the low-level interface to the JIT compiler. It may return any 71 * object or {@code null} if no JIT compiler is available. Returns null 72 * on Android, whether or not the system has a JIT. 73 * 74 * @param cmd 75 * the command object for the JIT compiler. 76 * @return the result of executing command or {@code null}. 77 */ 78 public static Object command(Object cmd) { 79 return null; 80 } 81 82 /** 83 * Enables the JIT compiler. Does nothing on Android. 84 */ 85 public static void enable() { 86 87 } 88 89 /** 90 * Disables the JIT compiler. Does nothing on Android. 91 */ 92 public static void disable() { 93 94 } 95 } 96
