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  1. JDK
  2. JDK-6729405

Java with GTK L&F freezes(slows down repeatedly) when embedding Mozilla/XulRunner


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      Note: The product release specified is not correct (correct value was not available), the correct would be "future".

      We are working on integrating/embedding Mozilla/Xulrunner 1.9 into NetBeans IDE. We have hit this issue.
      We are using JDK 6 or JDK 7 respectivelly. The problem occures with GTK L&F. It freezes (stops until internal timeout expires) repeatedly, and causes it to be unusable. It is caused by thread unsafe control of paiting of GTK L&F.
      Our engineer (Michal Ceresna) provides a solution for the problem, which would make painting thread safe (see suggested fix - it would be in GTKNativeEngine clas).

      Here I am attaching Michal's more comprehensive description:
      Let me sum up the status of the current implementation on linux.

      There are four look&feels shipped with swing under linux:
      Metal, Motif and 2 different implementations for Gtk.
      Out of those, one implementation of the Gtk l&f freezes
      in one particular place. No other problems are known
      when using the other looks&feels

      On the other side, mozswing has now an implementation
      of the gtk event loop spining that I consider to be technically
      the right solution.

      The reason is, that the integration of swing and gtk happens
      on the toolkit level and therefore:

      *) independent of the mozilla and used mozilla version
      *) future proof
      *) capable of including other gtk-based native components
         in the same swing application (e.g. a movie player)

      However it has problems to coexist with the native implementation
      of gtk l&f. The reason of the problem is that the native gtk l&f
      implementation does that expect other gtk code (=mozilla) to be running
      in-process inside of the same swing application.




            • Assignee:
              peterz Peter Zhelezniakov (Inactive)
              duke J. Duke (Inactive)
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