327143 - Extraneous gif drawing when idle

Status: RESOLVED DUPLICATE of bug 322886

(Firefox :: General, defect)

Description

[David Catmull]

User-Agent:       Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.8.0.1) Gecko/20060111 Firefox/1.5.0.1
Build Identifier: Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.8.0.1) Gecko/20060111 Firefox/1.5.0.1

Firefox uses a surprising 10-15% CPU time with no windows open (867mHz G4). A sample shows that a significant amount of this is in nsImageMac::DrawToImage.

Reproducible: Always

Steps to Reproduce:
1. Run FireFox with no windows open
2. Take a sample with Activity Monitor.

Actual Results:  
16 __CFRunLoopDoSources0
  16 PL_ProcessPendingEvents
    15 PL_HandleEvent
      15 handleTimerEvent(TimerEventType*)
        15 nsTimerImpl::Fire()
          15 imgContainerGIF::Notify(nsITimer*)
            15 imgContainerGIF::DoComposite(gfxIImageFrame**, nsRect*, gfxIImageFrame*, gfxIImageFrame*, int)
              15 gfxImageFrame::DrawTo(gfxIImageFrame*, int, int, int, int)
                15 nsImageMac::DrawToImage(nsIImage*, int, int, int, int)
                  8 CGContextDrawImage
                  5 CGContextClearRect
                  1 CFRelease
                  1 malloc


Expected Results:  
It shouldn't be drawing anything with no windows open.

Comment 1

[David Catmull]

Actually it stopped after quit and restart. I'll try to catch it happening again and post more info. I tried opening a page with an animated gif and then closing the window, but that didn't trigger it.

Comment 2

[David Catmull]

Ah, this is probably a duplicate of #322886. My original search didn't turn that one up.

Comment 3

[Adam Guthrie]

*** This bug has been marked as a duplicate of 322886 ***