AWTUtil.lockToolkit

I'm using JOGL 2.3.2 with Swing/AWT ( property sun.java2d.opengl=true )

I have several threads which call simultaneously Java2D.invokeWithOGLSharedContextCurrent() or Java2D.invokeWithOGLContextCurrent().

The first thread set AWTUtil.lockedToolkit to true
The others threads get a GLException "Toolkit already locked"

In my context, SunToolkit.awtLock() is called
So, why do we need the static AWTUtil.lockedToolkit ?

Sorry for the late reply. Several threads shouldn't call that simultaneously. Have you tried to use invokeAndWait?