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/*
* Copyright (c) 2003 Sun Microsystems, Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* - Redistribution of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistribution in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* Neither the name of Sun Microsystems, Inc. or the names of
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* This software is provided "AS IS," without a warranty of any kind. ALL
* EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
* INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
* MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
* ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
* DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
* ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
* DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
* DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
* ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
* SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
*
* You acknowledge that this software is not designed or intended for use
* in the design, construction, operation or maintenance of any nuclear
* facility.
*
* Sun gratefully acknowledges that this software was originally authored
* and developed by Kenneth Bradley Russell and Christopher John Kline.
*/
package com.sun.opengl.impl;
import java.awt.Toolkit;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.HashSet;
public class NativeLibLoader {
public interface LoaderAction {
/**
* Loads the library specified by libname. Optionally preloads the libraries specified by
* preload. The implementation should ignore, if the preload-libraries have already been
* loaded.
* @param libname the library to load
* @param preload the libraries to load before loading the main library
* @param doPreload true, iff the preload-libraries should be loaded
* @param ignoreError true, iff errors during loading the preload-libraries should be ignored
*/
void loadLibrary(String libname, String[] preload,
boolean doPreload, boolean ignoreError);
}
private static class DefaultAction implements LoaderAction {
public void loadLibrary(String libname, String[] preload,
boolean doPreload, boolean ignoreError) {
if (doPreload) {
for (int i=0; i<preload.length; i++) {
try {
System.loadLibrary(preload[i]);
}
catch (UnsatisfiedLinkError e) {
if (!ignoreError && e.getMessage().indexOf("already loaded") < 0) {
throw e;
}
}
}
}
System.loadLibrary(libname);
}
}
private static final HashSet loaded = new HashSet();
private static LoaderAction loaderAction = new DefaultAction();
public static void disableLoading() {
setLoadingAction(null);
}
public static void enableLoading() {
setLoadingAction(new DefaultAction());
}
public static synchronized void setLoadingAction(LoaderAction action) {
loaderAction = action;
}
private static synchronized void loadLibrary(String libname, String[] preload,
boolean doPreload, boolean ignoreError) {
if (loaderAction != null && !loaded.contains(libname))
{
loaderAction.loadLibrary(libname, preload, doPreload, ignoreError);
loaded.add(libname);
}
}
public static void loadCore() {
AccessController.doPrivileged(new PrivilegedAction() {
public Object run() {
loadLibrary("jogl", null, false, false);
return null;
}
});
}
public static void loadAWTImpl() {
AccessController.doPrivileged(new PrivilegedAction() {
public Object run() {
// Make sure that awt.dll is loaded before loading jawt.dll. Otherwise
// a Dialog with "awt.dll not found" might pop up.
// See http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4481947.
Toolkit.getDefaultToolkit();
// Must pre-load JAWT on all non-Mac platforms to
// ensure references from jogl_awt shared object
// will succeed since JAWT shared object isn't in
// default library path
boolean isOSX = System.getProperty("os.name").equals("Mac OS X");
String[] preload = { "jawt" };
loadLibrary("jogl_awt", preload, !isOSX, false);
return null;
}
});
}
// See DRIHack.java in com/sun/opengl/impl/x11/ for description of
// why this is needed
public static void loadDRIHack() {
AccessController.doPrivileged(new PrivilegedAction() {
public Object run() {
loadLibrary("jogl_drihack", null, false, false);
return null;
}
});
}
public static void loadCgImpl() {
AccessController.doPrivileged(new PrivilegedAction() {
public Object run() {
String[] preload = { "cg", "cgGL" };
loadLibrary("jogl_cg", preload, true, true);
return null;
}
});
}
}
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