Mercurial > hg > truffle
view graal/com.oracle.graal.hotspot.loader/src/com/oracle/graal/hotspot/loader/Factory.java @ 21513:d760a7d64801
Graal loader: load all .jar files (regardless of graal prefix)
author | Gilles Duboscq <gilles.m.duboscq@oracle.com> |
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date | Wed, 06 May 2015 16:54:59 +0200 |
parents | 12e94cba3696 |
children |
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/* * Copyright (c) 2014, 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. * * 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 com.oracle.graal.hotspot.loader; import java.io.*; import java.net.*; import java.util.*; /** * Utility to create and register a separate class loader for loading Graal classes (i.e., those in * found in jars in lib/graal). */ public class Factory { /** * Copy of the {@code UseGraalClassLoader} VM option. Set by the VM before the static * initializer is called. */ private static boolean useGraalClassLoader; /** * Registers the Graal class loader in the VM. */ private static native void init(ClassLoader loader); static { init(useGraalClassLoader ? newClassLoader() : null); } /** * Creates a new class loader for loading graal classes. */ private static ClassLoader newClassLoader() { URL[] urls = getGraalJarsUrls(); ClassLoader parent = null; return URLClassLoader.newInstance(urls, parent); } /** * Gets the URLs for lib/graal/graal*.jar. */ private static URL[] getGraalJarsUrls() { File javaHome = new File(System.getProperty("java.home")); File lib = new File(javaHome, "lib"); File graal = new File(lib, "graal"); if (!graal.exists()) { throw new InternalError(graal + " does not exist"); } List<URL> urls = new ArrayList<>(); for (String fileName : graal.list()) { if (fileName.endsWith(".jar")) { File file = new File(graal, fileName); if (file.isDirectory()) { continue; } try { urls.add(file.toURI().toURL()); } catch (MalformedURLException e) { throw new InternalError(e); } } } return urls.toArray(new URL[urls.size()]); } }