Mike, you're correct that removeChild doesn't remove listeners, but in
Nate's code below, if you removeChlid(endDate), you don't "have to"
remove the mouse click listener as endDate has a reference to barClick
and not the other way around.
Nate, if you didn't make a typo, hasEventListener("MouseEvent.CLICK")
should be hasEventListener(MouseEvent.CLICK);
Anyway, something is holding on to something. I guess I'd suggest
commenting out things, making the dataprovider smaller and other stuff
to see what might make a difference. If you can break it down to
something small enough to be posted then we can all take a look.
For example, you might get new dataproviders but not assign them to the
view classes and see if that leaks. Or take out the fish eye, or take
out the book UI.
-Alex
________________________________
From: [email protected]
[mailto:[EMAIL PROTECTED] On Behalf Of Michael Labriola
Sent: Sunday, April 08, 2007 7:51 PM
To: [email protected]
Subject: [flexcomponents] Re: changing dataprovider on custom component
Nate,
I am glad things seem to be working somewhat better and I can see
the smoke effect taking major cpu time.
For future reference, removing a child does not remove the event
listeners on that child. I might, for example, want to remove a
child from one container and add it to another, so, the child is
preserved until all references to it are removed.
Skim this link when you have time, start about half way down on
destroying unused objects.
http://livedocs.adobe.com/flex/201/html/wwhelp/wwhimpl/common/html/ww
<http://livedocs.adobe.com/flex/201/html/wwhelp/wwhimpl/common/html/ww>
help.htm?context=LiveDocs_Book_Parts&file=performance_118_27.html
This might not have anything to do with your issue at this point,
but, it is still very usefull information.
Take care,
Mike
http://blogs.digitalprimates.net/codeSlinger/
<http://blogs.digitalprimates.net/codeSlinger/>
--- In [email protected]
<mailto:flexcomponents%40yahoogroups.com> , "Nate Pearson"
<[EMAIL PROTECTED]> wrote:
>
> I am not removing any event listeners. Here's how I am adding
them.
>
> endDate.addEventListener(MouseEvent.CLICK, barClick)
>
>
> private function barClick(event:MouseEvent):void{
> var Event:TextEvent = new TextEvent("barClick");
> var myDate:Date = new Date();
> Event.text = myDate.getMilliseconds().toString();
> dispatchEvent(Event);
> }
>
> I figured that when you remove a child that it would remove any
event
> listeners that were on that child. I wrote this in a loop through
the
> children:
>
> if (this.getChildAt(0).hasEventListener("MouseEvent.CLICK")){
> this.getChildAt(0).removeEventListener("MouseEvent.CLICK",
barClick );
> }
>
> When I debugged that if statement was never true. I also commented
> out all of my addEventListener code and the app still eats up
memory. :(
>
> Alex, I read your garbage collection and memory leak posts. I
> automated changing my data providers and turning flex book pages.
I
> got to 608 megs before there was heaving pagging and i stopped
it. It
> seems when I change dataproviders my app likes to take up a chunk
of
> 10 megs of memory at a time.
>
> When I automate Ely's Anatomy flex book on its own it takes up
around
> 100k a second and doesn't seem to top out. I wonder if this could
> have to do with his component? I doubt it though, hes like a super
> genius and I'm new to AS3; so it's probably me.
>
> I'm willing to try anything and everything to get this fixed!
>
> Thanks for your response.
>
> Nate
>
>
>
> --- In [email protected]
<mailto:flexcomponents%40yahoogroups.com> , "Michael Labriola"
> <labriola@> wrote:
> >
> >
> > Nate,
> >
> > Out of curiosity, you mention event listeners specifically. When
you
> > are removing children and changing dataProviders, are you also
> > removing event listeners or do you just continue to add them.
> >
> > Dependent upon how you are adding the event listeners, you could
be
> > preventing flash from garbage collection the previous
dataproviders
> > and/or the objects you are creating.
> >
> > Just my first reaction,
> > Mike
> > http://blogs.digitalprimates.net/codeSlinger/
<http://blogs.digitalprimates.net/codeSlinger/>
> >
> >
> > --- In [email protected]
<mailto:flexcomponents%40yahoogroups.com> , "Nate Pearson"
> > <napearson99@> wrote:
> > >
> > > "Are you changing the entire dp or values inside it?"
> > > I have 4 dps each which hit its own instance of the
component. I
> > am
> > > getting new data from a webservice and assigning it to the dps
> > like so:
> > > p3.dataProvider = _Book[0].bar
> > > p4.dataProvider = _Book[0].bar
> > > p2.dataProvider = _Book[1].bar
> > > p1.dataProvider = _Book[1].bar
> > >
> > > *Book is an array collection that receives information from my
ws
> > >
> > >
> > > "What kinds of custom component is it?"
> > > My custom component extends UIComponent. I dynamically draw a
few
> > > sprites, labels and text inside of it depending on the data.
Each
> > of
> > > those have an event handler on them.
> > >
> > > Those components sit inside Ely's flex component as
transparent
> > pages.
> > > The idea is to dynamically build layers based on what the
user
> > wants
> > > to see. I have Doug Mccune's version of Ely's fish eye
component
> > as
> > > the navigation on the bottom. After I change the dpa few
times
> > and my
> > > component gets updated i can really tell that the fish eye
> > component
> > > slows down.
> > >
> > >
> > > "Is memory usage going up?"
> > > Memory usage does go up. In firefox after changing the dp
about 20
> > > times i pumped it up from 70megs to 220megs. The browser also
> > takes
> > > up exactly 22% or 25% of the cpu in IE and Firefox
respectively.
> > I'm
> > > on a dual core with hyper threading and I think its maxing out
one
> > of
> > > the fake cores. The weird thing is that it stays at that 22%
or
> > 25%.
> > > I have debugged for updatedisplaylist infinite loops but i
didn't
> > > find one.
> > >
> > >
> > > "What gets slower? Scrolling? Something else?"
> > > Everything does. I have some animations that go very slow.
The
> > fish
> > > eye component goes very slow. Turning the page in the flex
book is
> > > also slow. It seems like the frame rate gets very low.
Reminds
> > me of
> > > in a video game when there is too much action going on and my
> > computer
> > > slows down.
> > >
> > > Sorry for the really long reply, but this component is so
> > important to
> > > me! I'm in on a Saturday trying to get it fixed :(.
> > >
> > > Thank you Alex!
> > >
> > > -Nate
> > >
> > > p.s. I am also clearing this children along with graphics.clear
()
> > in
> > > updatedisplaylist.
> > >
> > > var j:int = this.numChildren
> > > for (i=0; i<j; i++){
> > > this.removeChildAt(0)
> > > }
> > >
> > >
> > > --- In [email protected]
<mailto:flexcomponents%40yahoogroups.com> , "Alex Harui" <aharui@>
> > wrote:
> > > >
> > > > Are you changing the entire dp or values inside it?
What
> > kinds of
> > > > custom component is it?
> > > >
> > > >
> > > >
> > > > ________________________________
> > > >
> > > > From: [email protected]
<mailto:flexcomponents%40yahoogroups.com>
> > > > [mailto:[email protected]
<mailto:flexcomponents%40yahoogroups.com> ] On Behalf Of Nate
Pearson
> > > > Sent: Friday, April 06, 2007 5:28 PM
> > > > To: [email protected]
<mailto:flexcomponents%40yahoogroups.com>
> > > > Subject: [flexcomponents] changing dataprovider on custom
> > component
> > > >
> > > >
> > > >
> > > > I have a custom component that works pretty well. When I
change
> > the
> > > > dataProvider while the application is running it gets slower
and
> > > > slower. The more I change it the worse it gets.
> > > >
> > > > In my updateDisplayList I call graphics.clear(); . Do i need
to
> > > > override the dataprovider function and call graphics.clear
();
> > there?
> > > > If so could someone show me how?
> > > >
> > > > I also call invalidateDisplayList on my component(s) from my
main
> > > > application. Im guessing this is bad practice and it should
be
> > called
> > > > some where inside (perhaps when I set the dataprovider?)
> > > >
> > > > If not, what do you think is wrong?
> > > >
> > >
> >
>
