/* * Copyright (c) 1995, 2008, 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. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * 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 java.lang; /** * The {@code Compiler} class is provided to support Java-to-native-code * compilers and related services. By design, the {@code Compiler} class does * nothing; it serves as a placeholder for a JIT compiler implementation. * *
When the Java Virtual Machine first starts, it determines if the system * property {@code java.compiler} exists. (System properties are accessible * through {@link System#getProperty(String)} and {@link * System#getProperty(String, String)}. If so, it is assumed to be the name of * a library (with a platform-dependent exact location and type); {@link * System#loadLibrary} is called to load that library. If this loading * succeeds, the function named {@code java_lang_Compiler_start()} in that * library is called. * *
If no compiler is available, these methods do nothing.
*
* @author Frank Yellin
* @since JDK1.0
*/
public final class Compiler {
private Compiler() {} // don't make instances
private static native void initialize();
private static native void registerNatives();
static {
registerNatives();
java.security.AccessController.doPrivileged(
new java.security.PrivilegedAction