1 /* 2 * Copyright (c) 2003 Sun Microsystems, Inc. All Rights Reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * 8 * - Redistribution of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 11 * - Redistribution in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * Neither the name of Sun Microsystems, Inc. or the names of 16 * contributors may be used to endorse or promote products derived from 17 * this software without specific prior written permission. 18 * 19 * This software is provided "AS IS," without a warranty of any kind. ALL 20 * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, 21 * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A 22 * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN 23 * MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR 24 * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR 25 * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR 26 * ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR 27 * DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE 28 * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, 29 * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF 30 * SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. 31 * 32 * You acknowledge that this software is not designed or intended for use 33 * in the design, construction, operation or maintenance of any nuclear 34 * facility. 35 * 36 * Sun gratefully acknowledges that this software was originally authored 37 * and developed by Kenneth Bradley Russell and Christopher John Kline. 38 */ 39 40 package com.sun.opengl.impl; 41 42 import java.awt.Toolkit; 43 import java.lang.reflect.InvocationTargetException; 44 import java.lang.reflect.Method; 45 import java.security.AccessController; 46 import java.security.PrivilegedAction; 47 import java.util.HashSet; 48 49 public class NativeLibLoader { 50 public interface LoaderAction { 51 /** 52 * Loads the library specified by libname. Optionally preloads the libraries specified by 53 * preload. The implementation should ignore, if the preload-libraries have already been 54 * loaded. 55 * @param libname the library to load 56 * @param preload the libraries to load before loading the main library 57 * @param doPreload true, iff the preload-libraries should be loaded 58 * @param ignoreError true, iff errors during loading the preload-libraries should be ignored 59 */ loadLibrary(String libname, String[] preload, boolean doPreload, boolean ignoreError)60 void loadLibrary(String libname, String[] preload, 61 boolean doPreload, boolean ignoreError); 62 } 63 64 private static class DefaultAction implements LoaderAction { loadLibrary(String libname, String[] preload, boolean doPreload, boolean ignoreError)65 public void loadLibrary(String libname, String[] preload, 66 boolean doPreload, boolean ignoreError) { 67 if (doPreload) { 68 for (int i=0; i<preload.length; i++) { 69 try { 70 loadLibraryInternal(preload[i]); 71 } 72 catch (UnsatisfiedLinkError e) { 73 if (!ignoreError && e.getMessage().indexOf("already loaded") < 0) { 74 throw e; 75 } 76 } 77 } 78 } 79 80 loadLibraryInternal(libname); 81 } 82 } 83 84 private static final HashSet loaded = new HashSet(); 85 private static LoaderAction loaderAction = new DefaultAction(); 86 disableLoading()87 public static void disableLoading() { 88 setLoadingAction(null); 89 } 90 enableLoading()91 public static void enableLoading() { 92 setLoadingAction(new DefaultAction()); 93 } 94 setLoadingAction(LoaderAction action)95 public static synchronized void setLoadingAction(LoaderAction action) { 96 loaderAction = action; 97 } 98 loadLibrary(String libname, String[] preload, boolean doPreload, boolean ignoreError)99 private static synchronized void loadLibrary(String libname, String[] preload, 100 boolean doPreload, boolean ignoreError) { 101 if (loaderAction != null && !loaded.contains(libname)) 102 { 103 loaderAction.loadLibrary(libname, preload, doPreload, ignoreError); 104 loaded.add(libname); 105 } 106 } 107 loadCore()108 public static void loadCore() { 109 AccessController.doPrivileged(new PrivilegedAction() { 110 public Object run() { 111 loadLibrary("jogl", null, false, false); 112 return null; 113 } 114 }); 115 } 116 loadAWTImpl()117 public static void loadAWTImpl() { 118 AccessController.doPrivileged(new PrivilegedAction() { 119 public Object run() { 120 // Make sure that awt.dll is loaded before loading jawt.dll. Otherwise 121 // a Dialog with "awt.dll not found" might pop up. 122 // See http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4481947. 123 Toolkit.getDefaultToolkit(); 124 125 // Must pre-load JAWT on all non-Mac platforms to 126 // ensure references from jogl_awt shared object 127 // will succeed since JAWT shared object isn't in 128 // default library path 129 boolean isOSX = System.getProperty("os.name").equals("Mac OS X"); 130 String[] preload = { "jawt" }; 131 132 loadLibrary("jogl_awt", preload, !isOSX, false); 133 return null; 134 } 135 }); 136 } 137 loadCgImpl()138 public static void loadCgImpl() { 139 AccessController.doPrivileged(new PrivilegedAction() { 140 public Object run() { 141 String[] preload = { "cg", "cgGL" }; 142 loadLibrary("jogl_cg", preload, true, true); 143 return null; 144 } 145 }); 146 } 147 148 //---------------------------------------------------------------------- 149 // Support for the new JNLPAppletLauncher 150 // 151 152 private static boolean usingJNLPAppletLauncher; 153 private static Method jnlpLoadLibraryMethod; 154 155 static { AccessController.doPrivileged(new PrivilegedAction() { public Object run() { String sunAppletLauncher = System.getProperty(R); usingJNLPAppletLauncher = Boolean.valueOf(sunAppletLauncher).booleanValue(); return null; } })156 AccessController.doPrivileged(new PrivilegedAction() { 157 public Object run() { 158 String sunAppletLauncher = System.getProperty("sun.jnlp.applet.launcher"); 159 usingJNLPAppletLauncher = Boolean.valueOf(sunAppletLauncher).booleanValue(); 160 return null; 161 } 162 }); 163 } 164 165 // I hate the amount of delegation currently in this class loadLibraryInternal(String libraryName)166 private static void loadLibraryInternal(String libraryName) { 167 // Note: special-casing JAWT which is built in to the JDK 168 if (usingJNLPAppletLauncher && !libraryName.equals("jawt")) { 169 try { 170 if (jnlpLoadLibraryMethod == null) { 171 Class jnlpAppletLauncherClass = Class.forName("org.jdesktop.applet.util.JNLPAppletLauncher"); 172 jnlpLoadLibraryMethod = jnlpAppletLauncherClass.getDeclaredMethod("loadLibrary", new Class[] { String.class }); 173 } 174 jnlpLoadLibraryMethod.invoke(null, new Object[] { libraryName }); 175 } catch (Exception e) { 176 Throwable t = e; 177 if (t instanceof InvocationTargetException) { 178 t = ((InvocationTargetException) t).getTargetException(); 179 } 180 if (t instanceof Error) 181 throw (Error) t; 182 if (t instanceof RuntimeException) { 183 throw (RuntimeException) t; 184 } 185 // Throw UnsatisfiedLinkError for best compatibility with System.loadLibrary() 186 throw (UnsatisfiedLinkError) new UnsatisfiedLinkError().initCause(e); 187 } 188 } else { 189 System.loadLibrary(libraryName); 190 } 191 } 192 } 193