Mercurial > hg > truffle
annotate graal/com.oracle.jvmci.service/src/com/oracle/jvmci/service/JVMCIClassLoaderFactory.java @ 21751:1524f4f7894d
fix rethrowException flag in exception dispatch state
author | Andreas Woess <andreas.woess@oracle.com> |
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date | Fri, 05 Jun 2015 17:59:05 +0200 |
parents | 71b338926f2e |
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1 /* |
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2 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 */ |
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23 package com.oracle.jvmci.service; |
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24 |
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25 import java.io.*; |
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26 import java.net.*; |
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27 import java.util.*; |
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28 |
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29 /** |
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30 * Utility called from the VM to create and register a separate class loader for loading JVMCI |
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31 * classes (i.e., those in found in lib/jvmci/*.jar). |
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32 */ |
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33 class JVMCIClassLoaderFactory { |
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34 |
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35 /** |
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36 * Copy of the {@code UseJVMCIClassLoader} VM option. Set by the VM before the static |
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37 * initializer is called. |
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38 */ |
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39 private static boolean useJVMCIClassLoader; |
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40 |
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41 /** |
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42 * Registers the JVMCI class loader in the VM. |
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43 */ |
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44 private static native void init(ClassLoader loader); |
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45 |
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46 static { |
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47 init(useJVMCIClassLoader ? newClassLoader() : null); |
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48 } |
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49 |
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50 /** |
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51 * Creates a new class loader for loading JVMCI classes. |
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52 */ |
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53 private static ClassLoader newClassLoader() { |
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54 URL[] urls = getJVMCIJarsUrls(); |
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55 ClassLoader parent = null; |
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56 return URLClassLoader.newInstance(urls, parent); |
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57 } |
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58 |
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59 /** |
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60 * Gets the URLs for lib/jvmci/*.jar. |
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61 */ |
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62 private static URL[] getJVMCIJarsUrls() { |
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63 File javaHome = new File(System.getProperty("java.home")); |
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64 File lib = new File(javaHome, "lib"); |
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65 File jvmci = new File(lib, "jvmci"); |
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66 if (!jvmci.exists()) { |
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67 throw new InternalError(jvmci + " does not exist"); |
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68 } |
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69 |
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70 List<URL> urls = new ArrayList<>(); |
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71 for (String fileName : jvmci.list()) { |
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72 if (fileName.endsWith(".jar")) { |
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73 File file = new File(jvmci, fileName); |
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74 if (file.isDirectory()) { |
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75 continue; |
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76 } |
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77 try { |
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78 urls.add(file.toURI().toURL()); |
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79 } catch (MalformedURLException e) { |
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80 throw new InternalError(e); |
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81 } |
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82 } |
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83 } |
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84 |
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85 return urls.toArray(new URL[urls.size()]); |
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86 } |
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87 } |