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jeremybenn |
/* Compiler.java -- placeholder for Java-to-native runtime compilers
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Copyright (C) 1998, 1999, 2001, 2002, 2004, 2005 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package java.lang;
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/**
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* The <code>Compiler</code> class is a placeholder for a JIT compiler
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* implementation, and does nothing unless there is such a compiler.
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*
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* <p>The system property <code>java.compiler</code> may contain the name
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* of a library to load with <code>System.loadLibrary</code> when the
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* virtual machine first starts. If so, and loading the library succeeds,
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* then a function by the name of <code>java_lang_Compiler_start()</code>
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* in that library is called.
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*
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* <p>Note that a VM might not have implemented any of this.
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*
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* @author Tom Tromey (tromey@cygnus.com)
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* @see System#getProperty(String)
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* @see System#getProperty(String, String)
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* @see System#loadLibrary(String)
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* @since JDK 1.0
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* @status updated to 1.4
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*/
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public final class Compiler
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{
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/**
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* Don't allow new `Compiler's to be made.
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*/
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private Compiler()
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{
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}
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/**
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* Compile the class named by <code>oneClass</code>.
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*
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* @param oneClass the class to compile
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* @return <code>false</code> if no compiler is available or
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* compilation failed, <code>true</code> if compilation succeeded
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* @throws NullPointerException if oneClass is null
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*/
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public static boolean compileClass(Class<?> oneClass)
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{
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return VMCompiler.compileClass(oneClass);
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}
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/**
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* Compile the classes whose name matches <code>classNames</code>.
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*
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* @param classNames the name of classes to compile
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* @return <code>false</code> if no compiler is available or
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* compilation failed, <code>true</code> if compilation succeeded
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* @throws NullPointerException if classNames is null
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*/
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public static boolean compileClasses(String classNames)
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{
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return VMCompiler.compileClasses(classNames);
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}
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/**
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* This method examines the argument and performs an operation
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* according to the compilers documentation. No specific operation
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* is required.
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*
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* @param arg a compiler-specific argument
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* @return a compiler-specific value, including null
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* @throws NullPointerException if the compiler doesn't like a null arg
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*/
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public static Object command(Object arg)
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{
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return VMCompiler.command(arg);
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}
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/**
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* Calling <code>Compiler.enable()</code> will cause the compiler
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* to resume operation if it was previously disabled; provided that a
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* compiler even exists.
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*/
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public static void enable()
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{
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VMCompiler.enable();
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}
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/**
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* Calling <code>Compiler.disable()</code> will cause the compiler
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* to be suspended; provided that a compiler even exists.
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*/
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public static void disable()
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{
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VMCompiler.disable();
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}
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}
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