[Gambas-user] Allocations non freed.
Fabien Bodard
gambas.fr at ...626...
Fri Nov 1 09:02:50 CET 2013
It's available for all gambas objects. There is a reference counter in the
interpreter. so when an object have no ref anywhere then it is destroyed.
Be carefull with some widget that are referenced in theire container.
2013/10/31 Kevin Fishburne <kevinfishburne at ...1887...>
> On 10/31/2013 03:08 AM, Fabien Bodard wrote:
> > 2013/10/29 Tobias Boege <taboege at ...626...>
> >
> >> On Mon, 28 Oct 2013, Kevin Fishburne wrote:
> >>> On 10/28/2013 03:50 PM, Tobias Boege wrote:
> >>>> On Mon, 28 Oct 2013, Jorge Carri?n wrote:
> >>>>> I have a component who inherits from gridview.
> >>>>> It's not a complicated thing, but when its included in a project
> >> allways
> >>>>> produced a warning in the console about allocations non freed like
> >> this.
> >>>>> gbx3: warning: 82 allocation(s) non freed.
> >>>>>
> >>>>> I have read that it references to variables who remains allocated in
> >> ram
> >>>>> after the end of the program but I don't any clue about how prevent
> >> this.
> >>>>> I've coded something like this in al close event of all parts of the
> >>>>> component
> >>>>>
> >>>>> variableObjecA=null
> >>>>> variableNumericB=0
> >>>>> variableStringC=""
> >>>>>
> >>>>> But the warning still remains.
> >>>>>
> >>>>> Someone knows a way to prevent or debug this?
> >>>>>
> >>>>> Thanks in advance.
> >>>>>
> >>>> I don't really know a good way to debug it. A solution might be to
> >> send your
> >>>> project to this list so we could have a look.
> >>>>
> >>>> BTW, 82 is an impressive number! I never came above 10. :-)
> >>>>
> >>>> Regards,
> >>>> Tobi
> >>> Mine have gotten in the 800's, possibly higher, so I'd like to know
> >>> what's up with that as well. In my case I think it may have something
> to
> >>> do with arrays of structures where one of the structure properties is
> an
> >>> array of OpenGL textures. Here are some snippets:
> >>>
> >> Doesn't sound harmful what you describe. However, if you have any
> circular
> >> references in this hierarchy (strictly speaking, if you have, it is not
> a
> >> hierarchie anymore but let's be sloppy on this), Gambas will get
> problems
> >> automatically freeing your objects. But IIRC, in this case, Gambas will
> >> detect that you have produced circular references and tell you so.
> >>
> >> Also, it can be that whatever component deals with OpenGL textures
> (maybe
> >> gb.opengl?) is buggy. Maybe it doesn't release all memory it
> allocated...?
> >>
> >>> Public Struct Render_Texture
> >>> Loaded As Boolean
> >>> FileName As String
> >>> ID As Integer[]
> >>> SubID As Short
> >>> Width As Short
> >>> Height As Short
> >>> Frames As Short
> >>> LastUsed As Single
> >>> End Struct
> >>>
> >>> Public tiPWO[32768] As Struct Render_Texture
> >>>
> >>> Public Sub Textures_PWO_Load()
> >>>
> >>> ' Load all PWO images into OpenGL textures.
> >>>
> >>> ' General declarations.
> >>> Dim Counter1 As Short ' General Counter.
> >>> Dim Counter2 As Short ' General Counter.
> >>>
> >>> ' Load PWO textures.
> >>> For Counter1 = 0 To 32766
> >>> ' If PWO image files exist then load them into OpenGL textures.
> >>> If Exist(BasePath & "/image/pwo/" & Counter1 & "_0.png") Then
> >>> tiPWO[Counter1].ID = Gl.GenTextures(16)
> >>> For Counter2 = 0 To 15
> >>> tTemp = Image.Load(BasePath & "/image/pwo/" & Counter1 & "_"
> &
> >>> Counter2 & ".png")
> >>> tiPWO[Counter1].Loaded = True
> >>> tiPWO[Counter1].Height = tTemp.Height
> >>> tiPWO[Counter1].Width = tTemp.Width
> >>> Gl.BindTexture(Gl.TEXTURE_2D, tiPWO[Counter1].ID[Counter2])
> >>> Gl.TexImage2D(tTemp)
> >>> Glu.Build2DMipmaps(tTemp)
> >>> Settings_MipMap(True)
> >>> Settings_Wrap(False)
> >>> Next
> >>> Endif
> >>> Next
> >>>
> >>> ' Clear temporary image.
> >>> tTemp.Clear
> >>>
> >>> End
> >>>
> >> Doesn't look wrong in my eyes. But the OpenGL stuff is a black box to
> me.
> >>
> >> Regards,
> >> Tobi
> >>
> >> --
> >> "There's an old saying: Don't change anything... ever!" -- Mr. Monk
> >>
> >>
> >>
> ------------------------------------------------------------------------------
> >> Android is increasing in popularity, but the open development platform
> that
> >> developers love is also attractive to malware creators. Download this
> white
> >> paper to learn more about secure code signing practices that can help
> keep
> >> Android apps secure.
> >>
> http://pubads.g.doubleclick.net/gampad/clk?id=65839951&iu=/4140/ostg.clktrk
> >> _______________________________________________
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> >> https://lists.sourceforge.net/lists/listinfo/gambas-user
> >>
> > tTemp=null to free the object But i'm not sure that solve all. You have
> > tester your class as it ?
>
> tTemp is a publicly declared variable of datatype Image in the Render
> module which is used to temporarily hold a texture loaded from disk
> before it's fed to OpenGL to become an OpenGL texture, so it shouldn't
> be creating "instances" or anything like that. Good to know just to
> assign Null to an image to nuke it, though.
>
> Maybe I need to explicitly clear/destroy my OpenGL textures.
>
> --
> Kevin Fishburne
> Eight Virtues
> www: http://sales.eightvirtues.com
> e-mail: sales at ...1887...
> phone: (770) 853-6271
>
>
>
> ------------------------------------------------------------------------------
> Android is increasing in popularity, but the open development platform that
> developers love is also attractive to malware creators. Download this white
> paper to learn more about secure code signing practices that can help keep
> Android apps secure.
> http://pubads.g.doubleclick.net/gampad/clk?id=65839951&iu=/4140/ostg.clktrk
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--
Fabien Bodard
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