Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/SALauncherLoader.java @ 196:d1605aabd0a1 jdk7-b30
6719955: Update copyright year
Summary: Update copyright year for files that have been modified in 2008
Reviewed-by: ohair, tbell
| author | xdono |
|---|---|
| date | Wed, 02 Jul 2008 12:55:16 -0700 |
| parents | c70a245cad3a |
| children | c18cbe5936b8 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 196 | 2 * Copyright 2005-2008 Sun Microsystems, Inc. All Rights Reserved. |
| 0 | 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 21 * have any questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 package sun.jvm.hotspot; | |
| 26 | |
| 27 import java.io.*; | |
| 28 import java.net.*; | |
| 29 import java.util.*; | |
| 30 import java.security.*; | |
| 31 | |
| 32 /** | |
| 33 * SA uses native debugger back-end library - libsaproc.so on Unix platforms. | |
| 34 * Starting from 5.0, in Solaris & Linux JDK "libsaproc.so" is shipped with JDK | |
| 35 * and is kept jre/lib/cpu directory (where all other JDK platform libraries | |
| 36 * are kept). This implies that always that jre copy of libsaproc.so will be | |
| 37 * used and the copy of libsaproc.so built from SA sources here will not | |
| 38 * be used at all. We can override libsaproc.so using this class loader | |
| 39 * as System class loader using "java.system.class.loader" property. This | |
| 40 * class loader loads classes paths specified paths using the System property | |
| 41 * "java.class.path". Because, this class loader loads SA debugger classes | |
| 42 * (among other classes), JVM calls findLibrary override here. In this | |
| 43 * findLibrary, we first check the library in the directories specified through | |
| 44 * "sa.library.path" System property. This way updated/latest SA native library | |
| 45 * can be loaded instead of the one from JDK's jre/lib directory. | |
| 46 */ | |
| 47 public class SALauncherLoader extends URLClassLoader { | |
| 48 | |
| 49 /** | |
| 50 * Checks native libraries under directories specified using | |
| 51 * the System property "sa.library.path". | |
| 52 */ | |
| 53 public String findLibrary(String name) { | |
| 54 name = System.mapLibraryName(name); | |
| 55 for (int i = 0; i < libpaths.length; i++) { | |
| 56 File file = new File(new File(libpaths[i]), name); | |
| 57 if (file.exists()) { | |
| 58 return file.getAbsolutePath(); | |
| 59 } | |
| 60 } | |
| 61 return null; | |
| 62 } | |
| 63 | |
| 64 public SALauncherLoader(ClassLoader parent) { | |
| 65 super(getClassPath(), parent); | |
| 66 String salibpath = System.getProperty("sa.library.path"); | |
| 67 if (salibpath != null) { | |
| 68 libpaths = salibpath.split(File.pathSeparator); | |
| 69 } else { | |
| 70 libpaths = new String[0]; | |
| 71 } | |
| 72 } | |
| 73 | |
| 74 /** | |
| 75 * Override loadClass so we can checkPackageAccess. | |
| 76 */ | |
| 77 public synchronized Class loadClass(String name, boolean resolve) | |
| 78 throws ClassNotFoundException { | |
| 79 int i = name.lastIndexOf('.'); | |
| 80 if (i != -1) { | |
| 81 SecurityManager sm = System.getSecurityManager(); | |
| 82 if (sm != null) { | |
| 83 sm.checkPackageAccess(name.substring(0, i)); | |
| 84 } | |
| 85 } | |
| 86 | |
| 87 Class clazz = findLoadedClass(name); | |
| 88 if (clazz != null) return clazz; | |
| 89 | |
| 90 /* | |
| 91 * NOTE: Unlike 'usual' class loaders, we do *not* delegate to | |
| 92 * the parent loader first. We attempt to load the class | |
| 93 * ourselves first and use parent loader only if we can't load. | |
| 94 * This is because the parent of this loader is 'default' | |
| 95 * System loader that can 'see' all SA classes in classpath and | |
| 96 * so will load those if delegated. And if parent loads SA classes, | |
| 97 * then JVM won't call findNative override in this class. | |
| 98 */ | |
| 99 try { | |
| 100 return findClass(name); | |
| 101 } catch (ClassNotFoundException cnfe) { | |
| 102 return (super.loadClass(name, resolve)); | |
| 103 } | |
| 104 } | |
| 105 | |
| 106 /** | |
| 107 * allow any classes loaded from classpath to exit the VM. | |
| 108 */ | |
| 109 protected PermissionCollection getPermissions(CodeSource codesource) { | |
| 110 PermissionCollection perms = super.getPermissions(codesource); | |
| 111 perms.add(new RuntimePermission("exitVM")); | |
| 112 return perms; | |
| 113 } | |
| 114 | |
| 115 //-- Internals only below this point | |
| 116 | |
| 117 private String[] libpaths; | |
| 118 | |
| 119 private static URL[] getClassPath() { | |
| 120 final String s = System.getProperty("java.class.path"); | |
| 121 final File[] path = (s == null) ? new File[0] : getClassPath(s); | |
| 122 | |
| 123 return pathToURLs(path); | |
| 124 } | |
| 125 | |
| 126 private static URL[] pathToURLs(File[] path) { | |
| 127 URL[] urls = new URL[path.length]; | |
| 128 for (int i = 0; i < path.length; i++) { | |
| 129 urls[i] = getFileURL(path[i]); | |
| 130 } | |
| 131 return urls; | |
| 132 } | |
| 133 | |
| 134 private static File[] getClassPath(String cp) { | |
| 135 String[] tmp = cp.split(File.pathSeparator); | |
| 136 File[] paths = new File[tmp.length]; | |
| 137 for (int i = 0; i < paths.length; i++) { | |
| 138 paths[i] = new File(tmp[i].equals("")? "." : tmp[i]); | |
| 139 } | |
| 140 return paths; | |
| 141 } | |
| 142 | |
| 143 private static URL getFileURL(File file) { | |
| 144 try { | |
| 145 file = file.getCanonicalFile(); | |
| 146 } catch (IOException e) { | |
| 147 e.printStackTrace(); | |
| 148 } | |
| 149 | |
| 150 try { | |
|
152
c70a245cad3a
6670684: 4/5 SA command universe did not print out CMS space information
dcubed
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changeset
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151 return file.toURI().toURL(); |
| 0 | 152 } catch (MalformedURLException mue) { |
| 153 throw new InternalError(mue.getMessage()); | |
| 154 } | |
| 155 } | |
| 156 } |