I modified the example to just reload the composition into the qcview every second. Looking at the output of "top", it does seem to be growing as described by Instruments.app - I'm no memory expert but I can see the numbers going up by about 1 MB every 20 minutes or so. To me, that seems worrisome considering all the app is doing is loading a qtz into a view every second. Assuming I trust what Instruments and top are telling me, what's the deal? Surely it's possible to make an application that loads/reloads compositions without it growing in size to infinity?
rob On Jan 20, 2012, at 8:00 PM, George Toledo wrote: > Have you tried profiling apps like Safari, iTunes, etc. as a reference for > what one sees in Instruments.app as "leaks"? Might be worth looking at. > > On Fri, Jan 20, 2012 at 5:13 PM, Rob Duarte <ra...@rahji.com> wrote: > Hi, > > I'm trying to load a sequence of compositions into a QCView and I'm seeing > consistent leaking when I run the application through Instruments. > > In my specific application, I'm loading several compositions from qtz files > into an NSArray of QCCompositions at the start. Then I'm loading those > QCCompositions from the array into the QCView whenever the user presses a > button in the UI. > > However, in trying to pare this application down to the bare minimum for > troubleshooting this, I got to the point where I was just loading the same > qtz every time a button was pressed and I see the same leaking. > > In fact, if I just create a new project in XCode using the "Quartz Composer > Application" (which appears to leak without any modifications)... then > replace the contents of the changeColorToBlue method with code to just reload > the same composition into the QCView: > > if (![qcView loadCompositionFromFile:[[NSBundle mainBundle] > pathForResource:@"Introduction" ofType:@"qtz"]]) NSLog(@"Could not load > composition"); > > ... you can see that every time you click the button in the UI, the same > leaks are added to the pile. > > I'm not sure how to proceed - at the simplest, I need an application that can > cycle through several compositions and continue running for many hours but > even that doesn't seem possible right now. Granted, the leaks are not huge > but I'd expect this to work without any leaks. The simple modification to > the template that I just described leaks around .5K every time you load a > composition into the view. > > Is there something I'm missing? > > Thanks for any help, > Rob > > > > _______________________________________________ > Do not post admin requests to the list. They will be ignored. > Quartzcomposer-dev mailing list (Quartzcomposer-dev@lists.apple.com) > Help/Unsubscribe/Update your Subscription: > https://lists.apple.com/mailman/options/quartzcomposer-dev/gtoledo3%40gmail.com > > This email sent to gtole...@gmail.com >
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