Hi Michael,
"Bishop, Michael W. CONTR J9C880" <[EMAIL PROTECTED]> wrote on
10/24/2005 11:13:12 AM:
> I don't think I'm calling it from the Swing thread. This code is
> basically called from an ActionListener. Are ActionListeners executed
> in the Swing thread?
Yes, ActionListeners are executed in the Swing thread. So you are
calling it from the Swing thread.
> The ActionListener calls a static method in a utility class:
>
> public static boolean runInUpdateManager(Runnable runnable) {
> boolean returnValue = false;
> try {
> if (GVTListener.getTreeRendered()) {
> returnValue = true;
> BatikDemo2.getSVGCanvas().getUpdateManager()
> .getUpdateRunnableQueue().invokeAndWait(runnable);
> }
> } catch (InterruptedException iE) {
> iE.printStackTrace();
> }
> return returnValue;
> }
>
> So yes, I'm calling invokeAndWait() in the RunnableQueue, but I didn't
> think I was deadlocking with Swing. I guess if ActionListeners are run
> in the Swing thread, this could be the problem.
It is the problem. Is there a reason you need to call
invokeAndWait versus invokeLater?
>
> Michael Bishop
>
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
> Sent: Saturday, October 22, 2005 11:25 AM
> To: [email protected]
> Cc: [email protected]
> Subject: Re: Resize bug?
>
> "Bishop, Michael W. CONTR J9C880" <[EMAIL PROTECTED]> wrote on
>
> 10/21/2005 09:18:18 AM:
>
> > I know, I?m running the whole list today! I have another issue. I?m
> trying
> > to resize the document by setting width and height attributes:
> >
> > public void setSize(String width, String height) {
> > svgDocument.getDocumentElement().setAttribute(SVGConstants.
> > SVG_WIDTH_ATTRIBUTE, width);
> > svgDocument.getDocumentElement().setAttribute(SVGConstants.
> > SVG_HEIGHT_ATTRIBUTE, height);
> > }
> >
> > I execute the above code in the run() method of a Runnable class which
> I
> then
> > execute in the UpdateManager. More often than not, it causes the
> entire
>
> > application to hang.
>
> I would guess that you are calling invokeAndWait on the RunnableQueue?
> And you are doing this from the Swing thread? If so this is a known
> issue,
> basically in some cases Batik needs to get info from Swing in which case
>
> it
> needs to call into the Swing Thread if you are sitting in it then it
> causes
> a deadlock. In this case you will need to either switch to invokeLater,
>
> or
> move your call to invokeAndWait out of the Swing thread (into a third
> party
> thread you control).
>
> > No button response. No CPU spike. No error message.
> > Just locks up. With System.out, I?ve determined that the code never
> exits
> > from the above setSize() method. Does anyone have any tips on why
> this
> would
> > happen? Is there some kind of deadlock with running a Runnable in the
>
> > UpdateManager? All my other operations; add element, remove element,
> set the
> > background element, etc. run without issue.
>
> You can get a thread dump in windows by running the
> application from the command line and pressing ctrl-break in
> the DOS Window, from Unix you can use 'kill -QUIT <java processes id>'.
> This should make it clear what the problem is.
>
>
> >
>
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