Hi all, I've found the cause of the memory leak isolating by some
piece of code. It seems not to be caused by gwt-ext but when I make
the map.addOverlay(createMarker(point, myObject));
where createMarker is:
Icon icon = Icon.newInstance(baseIcon);
icon.setImageURL(GWT.getModuleBaseURL()+"images/"+getColor
(nave)+"_ship.png");
GWT.log("Carico immagine "+icon.getImageURL(), null);
LabeledMarkerOptions options = LabeledMarkerOptions.newInstance
();
options.setTitle(nave.getNomeNave());
options.setIcon(icon);
options.setLabelText(String.valueOf(nave.getIdNave()));
options.setLabelClass("labeledMarker");
//200209Miki: se l'id nave è lungo una solo cifra va bene
così...
if((Integer.toString(nave.getIdNave())).length()==1)
options.setLabelOffset(Size.newInstance(1, -26));
//altrimenti devo shiftare la label di due posti a sinistra...
else
options.setLabelOffset(Size.newInstance(-2, -26));
//
LabeledMarker marker = new LabeledMarker(point, options);
((Marker)marker).addMarkerClickHandler(new MarkerClickHandler
() {
public void onClick(MarkerClickEvent event) {
//050209Miki: gestisco qui il popup informativo
InfoWindow info = map.getInfoWindow();
info.open(event.getSender(),
new InfoWindowContent(
"<div style='width:150px;height:65px; font-size:12px'
" +
"class='info-window'>" +
//"<p><img width='35px' src='"+GWT.getModuleBaseURL()
+"'images/logonave.png' align='left'></p>" +
"Nome nave: <b>"+nave.getNomeNave()+"</b><br/>" +
"Localita' Partenza: " +nave.getLocalitaPartenza()
+"<br/>" +
"Localita' Arrivo: "+nave.getLocalitaPartenza()+"<br/
>" //+
//"Merci Pericolose a Bordo: " +
nave.getMerciPericolose()+"<br/></div>"
));
}
});
return marker;
It' squite strange but now I'm sure the issue is with this piece of
code..
is map.clearOverlays(); sufficient to deallocate the previous
markers?
thx,
Michela
On 24 Feb, 10:56, Alexey_Tsiunchik <[email protected]> wrote:
> Hello,
>
> We already have discussion about GWT memory management
> here:http://groups.google.com/group/Google-Web-Toolkit/browse_thread/threa...
>
> Tuesday, February 24, 2009, 11:31:44 AM, you wrote:
>
>
>
> > I've tried reloading, I made a mistake some posts ago.. memory
> > decreases only if the browser is closed and then opened again. Only
> > reloading causes a bigger increment of memory usage.
> > On 24 Feb, 10:20, koalina <[email protected]> wrote:
> >> Hi alex,
> >> sorry but I can't see how fix the number of rows as I'm using a
> >> memoryProxy object.
> >> So, the timer is defined as follows:
> >> Timer t = new Timer() {
>
> >> public void run() {
> >> getShipInfo();
>
> >> }
>
> >> };
> >> where getShipInfo() is
>
> >> private void getShipInfo() {
>
> >> MainEntryPoint.getServiceWsNaviInMare().getInfoNaviInMare(new
> >> AsyncCallback() {
>
> >> public void onFailure(Throwable caught) {
> >> throw new UnsupportedOperationException("Not supported
> >> yet.");
> >> }
>
> >> public void onSuccess(Object result) {
> >> Vector listaNavi = (Vector) result;
> >> GWT.log("Lista Navi Ricevuta: "+listaNavi.toString(),
> >> null);
> >> if (listaNavi.size()>0) {
>
> >> Object[][] data = new Object[listaNavi.size()]
> >> [15];
> >> Iterator i = listaNavi.iterator();
> >> int index = 0;
>
> >> while (i.hasNext()) {
> >> Nave unaNave = (Nave) i.next();
> >> data[index] = new Object[]{
> >> unaNave.getIdNave(), unaNave.getNomeNave
> >> (),
>
> >> unaNave.getLocalita(), unaNave.getImbarco
> >> (),
>
> >> etc....
>
> >> GWT.log("Nave "+data[index][0]+data[index]
> >> [1].toString(), null);
>
> >> index++;
> >> unaNave = null;
>
> >> }
> >> if (store!=null) {
> >> store.removeAll();
> >> }
> >> MemoryProxy proxy = new MemoryProxy(data);
> >> ArrayReader reader = new ArrayReader(recordDef);
> >> store = new Store(proxy, reader);
> >> store.load();
> >> store.commitChanges();
>
> >> grid.reconfigure(store, columnModel);
> >> //240209Miki: x diminuire memory leak ...
> >> grid.clear();
> >> data = null;
> >> proxy = null;
> >> reader =null;
> >> store = null;
>
> >> }
> >> }
>
> >> });
>
> >> }
>
> >> I've tried with FF and there's no problem...so it's an issue with ie7.
> >> Can you see some big error in the code i posted just above? thx for
> >> help!
> >> Michela
>
> >> On 24 Feb, 09:48, "alex.d" <[email protected]> wrote:
>
> >> > Assuming adding/removing markers to/from the map is leakless (google
> >> > probably knows how to do this ;-) we are left with gwt-ext grid. Every
> >> > 10 sec you remove old rows and add new ones. So you have some DOM-
> >> > Elements (a table row) that are removed/created every 10 seconds.
> >> > Probably it's a grid's particular implementation that leaks. But most
> >> > probably it's just IE that doesn't really remove garbage properly even
> >> > when it can/should. So what can you do?
> >> > 1. If it's grid that leaks: dump it - implement smth. yourself with
> >> > vanilla GWT.
> >> > 2. It it's IE: let's say the total ammount of markers is never bigger
> >> > than 25 - you can create 25 rows in the table and instead of adding/
> >> > removing them you just change the text. This way you'll have slightly
> >> > more memory allocated at the beginning but hopefully no leaks while
> >> > running because no DOM-Elements are created/removed.
>
> >> > hth
>
> >> > On 24 Feb., 09:14, koalina <[email protected]> wrote:
>
> >> > > Hi Jason, yes, reloading page cause memory usage fall out.
> >> > > My app is quite simple: a gwt ext tab panel, the first tab showing the
> >> > > map widget, the second one a gwt ext grid with a few rows (more or
> >> > > less 10), each one with some information about the markers showed.
> >> > > I've three "thread", implemented as Timer, which refresh positions of
> >> > > markers, informations and last update time. Each thread make a rpc
> >> > > call and is always running, even when the tab of interest is not
> >> > > active....
> >> > > Do you see some critical issue in this application?
> >> > > thx for help, have a nice day
> >> > > Michela
>
> >> > > On 23 Feb, 20:55, Jason Essington <[email protected]> wrote:
>
> >> > > > Well, I've read various articles claiming that IE leaks like a sieve
> >> > > >
> >> > > > (don't have any references for you right now, but I'm sure google
> >> > > > could help).
>
> >> > > > One thing to try is does IE's memory usage come down when you reload
> >> > > >
> >> > > > the page, or load a new page?
>
> >> > > > -jason
>
> >> > > > On Feb 23, 2009, at 8:44 AM, koalina wrote:
>
> >> > > > > is there anyone who knows about memory leaks in this case?I've a
> >> > > > > tabPanel, but tab are not dinamically added, a MapWidget,
> >> > > > > periodically
> >> > > > > rpc to refresh marker on map
> >> > > > > I'm really getting crazy!
> >> > > > > thx,
> >> > > > > Michela
>
> >> > > > > On 23 Feb, 14:37, koalina <[email protected]> wrote:
> >> > > > >> I'm using google maps api for gwt, no memory leak found
> >> > > > >> gwt-ext, some leaks found, but it seems not to be my case...
>
> >> > > > >> please note that with JScript leaks detect there's no leak
> >> > > > >> found...
> >> > > > >> could it be a problem with ajaxLoader?or perhaps something coming
> >> > > > >>
> >> > > > >> from
> >> > > > >> timer.scheduleRepeating with rpc inside run body?
> >> > > > >> Michela
>
> >> > > > >> On 23 Feb, 14:29, Mahavir Jain <[email protected]> wrote:
>
> >> > > > >>> You should try googling out for memory-leaks for the packages
> >> > > > >>> you
> >> > > > >>> are
> >> > > > >>> using..
>
> >> > > > >>> For eg:- If you are using Image bundles then try googling the
> >> > > > >>> memory leaks
> >> > > > >>> related to image bundles..
>
> >> > > > >>> Hope this will help.
>
> >> > > > >>> Thanks.
> >> > > > >>> Mahavir
>
> >> > > > >>> On Mon, Feb 23, 2009 at 6:49 PM, koalina <[email protected]>
> >> > > > >>> wrote:
>
> >> > > > >>>> it is present web mode running on dedicated tomcat (I don't
> >> > > > >>>> know
> >> > > > >>>> for
> >> > > > >>>> hosted mode..).
> >> > > > >>>> iexplorer.exe process exponential grows..
>
> >> > > > >>>> On 23 Feb, 13:03, Eric Ayers <[email protected]> wrote:
> >> > > > >>>>> Is this a problem in web mode, hosted mode, or both?
>
> >> > > > >>>>> On Mon, Feb 23, 2009 at 7:01 AM, koalina <[email protected]>
> >> > > > >>>>>
> >> > > > >>>>> wrote:
>
> >> > > > >>>>>> hi Mahavir ,
> >> > > > >>>>>> thx for your reply.
> >> > > > >>>>>> I'm working with gwt 1.5.3 and ie7, is this issue valid also
> >> > > > >>>>>> in
> >> > > > >>>>>> this
> >> > > > >>>>>> case?
> >> > > > >>>>>> thx,
> >> > > > >>>>>> Michela
>
> >> > > > >>>>>> On 23 Feb, 12:57, Mahavir Jain <[email protected]> wrote:
> >> > > > >>>>>>> I am not sure whether this applies to you or not but there
> >> > > > >>>>>>> is
> >> > > > >>>>>>> memory
> >> > > > >>>> leak
> >> > > > >>>>>>> issue in IE6 browser for all RPC call.. You can check the
> >> > > > >>>>>>> issue
> >> > > > >>>> onhttp://code.google.com/p/google-web-toolkit/issues/detail?
> >> > > > >>>> id=1610..
>
> >> > > > >>>>>>> But this is not case for firefox.. Did you tried on firefox?
>
> >> > > > >>>>>>> Mahavir
>
> >> > > > >>>>>>> On Mon, Feb 23, 2009 at 5:13 PM, koalina
> >> > > > >>>>>>> <[email protected]>
> >> > > > >>>>>>> wrote:
>
> >> > > > >>>>>>>> Hi all,
> >> > > > >>>>>>>> I've developed a gwt app using MapWidget. The markers
> >> > > > >>>>>>>> showed
> >> > > > >>>>>>>> on the
> >> > > > >>>>>>>> map are periodically refreshed via rpc calls. The refresh
> >> > > > >>>>>>>> time
> >> > > > >>>> period
> >> > > > >>>>>>>> is 10 seconds. The app correctly runs for about an hour,
> >> > > > >>>>>>>> then
> >> > > > >>>>>>>> the
> >> > > > >>>>>>>> memory used increase exponentially... I've installed the js
> >> > > > >>>>>>>>
> >> > > > >>>>>>>> leaks
> >> > > > >>>>>>>> inspector for ie7, but no leak is catched... What can i do
> >> > > > >>>>>>>> to
> >> > > > >>>> resolve
> >> > > > >>>>>>>> this problem? I've reviewed all code..but everything seems
> >> > > > >>>>>>>> to
> >> > > > >>>>>>>> be
> >> > > > >>>>>>>> correct...
> >> > > > >>>>>>>> Thx for helping, have a nice day,
> >> > > > >>>>>>>> Michela
>
> >> > > > >>>>> --
> >> > > > >>>>> Eric Z. Ayers - GWT Team - Atlanta, GA USAhttp://
> >> > > > >>>> code.google.com/webtoolkit/
>
> --
> Best regards,
> Alexey_Tsiunchik mailto:[email protected]
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