Mercurial > hg > truffle
comparison graal/com.oracle.jvmci.service/src/com/oracle/jvmci/service/JVMCIClassLoaderFactory.java @ 21607:71b338926f2e
moved JVMCI classes into their own distributions (JBS:GRAAL-53)
author | Doug Simon <doug.simon@oracle.com> |
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date | Fri, 29 May 2015 22:27:38 +0200 |
parents | graal/com.oracle.jvmci.hotspot.loader/src/com/oracle/jvmci/hotspot/loader/Factory.java@47bebae7454f |
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21606:625b2b12b418 | 21607:71b338926f2e |
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1 /* | |
2 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. | |
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
20 * or visit www.oracle.com if you need additional information or have any | |
21 * questions. | |
22 */ | |
23 package com.oracle.jvmci.service; | |
24 | |
25 import java.io.*; | |
26 import java.net.*; | |
27 import java.util.*; | |
28 | |
29 /** | |
30 * Utility called from the VM to create and register a separate class loader for loading JVMCI | |
31 * classes (i.e., those in found in lib/jvmci/*.jar). | |
32 */ | |
33 class JVMCIClassLoaderFactory { | |
34 | |
35 /** | |
36 * Copy of the {@code UseJVMCIClassLoader} VM option. Set by the VM before the static | |
37 * initializer is called. | |
38 */ | |
39 private static boolean useJVMCIClassLoader; | |
40 | |
41 /** | |
42 * Registers the JVMCI class loader in the VM. | |
43 */ | |
44 private static native void init(ClassLoader loader); | |
45 | |
46 static { | |
47 init(useJVMCIClassLoader ? newClassLoader() : null); | |
48 } | |
49 | |
50 /** | |
51 * Creates a new class loader for loading JVMCI classes. | |
52 */ | |
53 private static ClassLoader newClassLoader() { | |
54 URL[] urls = getJVMCIJarsUrls(); | |
55 ClassLoader parent = null; | |
56 return URLClassLoader.newInstance(urls, parent); | |
57 } | |
58 | |
59 /** | |
60 * Gets the URLs for lib/jvmci/*.jar. | |
61 */ | |
62 private static URL[] getJVMCIJarsUrls() { | |
63 File javaHome = new File(System.getProperty("java.home")); | |
64 File lib = new File(javaHome, "lib"); | |
65 File jvmci = new File(lib, "jvmci"); | |
66 if (!jvmci.exists()) { | |
67 throw new InternalError(jvmci + " does not exist"); | |
68 } | |
69 | |
70 List<URL> urls = new ArrayList<>(); | |
71 for (String fileName : jvmci.list()) { | |
72 if (fileName.endsWith(".jar")) { | |
73 File file = new File(jvmci, fileName); | |
74 if (file.isDirectory()) { | |
75 continue; | |
76 } | |
77 try { | |
78 urls.add(file.toURI().toURL()); | |
79 } catch (MalformedURLException e) { | |
80 throw new InternalError(e); | |
81 } | |
82 } | |
83 } | |
84 | |
85 return urls.toArray(new URL[urls.size()]); | |
86 } | |
87 } |