/* * Copyright (c) 2003 Sun Microsystems, Inc. All Rights Reserved. * Copyright (c) 2010 JogAmp Community. 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. */ package jogamp.opengl.awt; import java.awt.GraphicsEnvironment; import java.lang.reflect.Method; import javax.media.nativewindow.NativeWindowFactory; import javax.media.opengl.GLException; public class AWTUtil { // See whether we're running in headless mode private static boolean headlessMode; private static Method isOGLPipelineActive = null; private static Method isQueueFlusherThread = null; private static boolean j2dOk = false; static { lockedToolkit = false; headlessMode = GraphicsEnvironment.isHeadless(); if(!headlessMode) { try { final Class<?> j2dClazz = Class.forName("jogamp.opengl.awt.Java2D"); isOGLPipelineActive = j2dClazz.getMethod("isOGLPipelineActive", (Class[])null); isQueueFlusherThread = j2dClazz.getMethod("isQueueFlusherThread", (Class[])null); j2dOk = true; } catch (Exception e) {} } } private static boolean lockedToolkit; public static synchronized void lockToolkit() throws GLException { if (lockedToolkit) { throw new GLException("Toolkit already locked"); } lockedToolkit = true; if (headlessMode) { // Workaround for running (to some degree) in headless // environments but still supporting rendering via pbuffers // For full correctness, would need to implement a Lock class return; } if(j2dOk) { try { if( !((Boolean)isOGLPipelineActive.invoke(null, (Object[])null)).booleanValue() || !((Boolean)isQueueFlusherThread.invoke(null, (Object[])null)).booleanValue() ) { NativeWindowFactory.getAWTToolkitLock().lock(); } } catch (Exception e) { j2dOk=false; } } if(!j2dOk) { NativeWindowFactory.getAWTToolkitLock().lock(); } } public static synchronized void unlockToolkit() { if (lockedToolkit) { lockedToolkit = false; if (headlessMode) { // Workaround for running (to some degree) in headless // environments but still supporting rendering via pbuffers // For full correctness, would need to implement a Lock class return; } if(j2dOk) { try { if( !((Boolean)isOGLPipelineActive.invoke(null, (Object[])null)).booleanValue() || !((Boolean)isQueueFlusherThread.invoke(null, (Object[])null)).booleanValue() ) { NativeWindowFactory.getAWTToolkitLock().unlock(); } } catch (Exception e) { j2dOk=false; } } if(!j2dOk) { NativeWindowFactory.getAWTToolkitLock().unlock(); } } } }