AW: crash when moving between stacks (again)

Tiemo Hollmann TB toolbook at kestner.de
Wed Mar 9 02:32:34 EST 2011


Hi Nicolas,
Perhaps you could try to add a "pass ..." at the end of all standard
handlers like open and close, so that the engine can catch them too.
Actually I don't know what is happening inside, but perhaps the engine still
wants to clean up some stuff, what it can't do without the pass?
Tiemo

> -----Ursprüngliche Nachricht-----
> Von: use-livecode-bounces at lists.runrev.com [mailto:use-livecode-
> bounces at lists.runrev.com] Im Auftrag von Nicolas Cueto
> Gesendet: Mittwoch, 9. März 2011 00:43
> An: LiveCode - general list
> Betreff: crash when moving between stacks (again)
> 
> Dear List,
> 
> Posted this back in June. Got no reply. But am posting gain, in hopes.
> 
> In short, one of my more convoluted Rev creations keeps crashing
> when some of its stacks close.
> 
> It's a combination of stacks. Here are the pieces:
> 
> - standalone-stack (holds the engine)
> - central-stack (for game-stack selection)
> - game-stacks (a myriad of these, some of them with substacks)
> 
> Crashes happen when a game-stack is closed to return to the central-stack.
> Moreso for some game-stacks than others.
> 
> I double checked that every stack, substack, and card has a
> preopen/open/close handler, even if this is empty.
> 
> I thought it may be a memory issue, cause the game-stack that almost
> always crashes has many URL-referenced image objects and runs on older
> Win machines. However, I tested on a newer machine with ample memory
> and cpu power, but  still get crashes.
> 
> Below is an outline of the scripted inter-relation between stacks. Perhaps
> someone will spot something I've overlooked
> 
> Thank you.
> 
> --
> 
> 
> Nicolas Cueto
> 
> ------  S T A R T    O F     S C R I P T S   -----
> 
> /*  In the card script of STANDALONE-STACK,
>    this handler sets stackFiles and then goes to
>   stack CENTRAL-STACK. */
> 
> on setUpTheFoundation
>     start using stack "STANDALONE "
>     put "GAMESTACK1,gamestack1.rev" & cr & "GAMESTACK2,gamestack2.rev"
> & cr & ... \
>         & "animationEngine,animationEngine.rev"       into
tStackFiles
>     set the stackFiles of stack "niconiko" to tStackFiles
>     ## Set the globals used by all stacks
>     open stack "CENTRAL"
>     hide stack "STANDALONE"
> end setUpTheFoundation
> 
> /* In stack script of CENTRALSTACK. */
> 
> on closestack
>    quit
> end closestack
> 
> /* In a go-to-gamestack button script on
>    CENTRALSTACK./
> 
> on mouseUp
>    open stack GAMESTACK
>    hide stack CENTRALSTACK
> end mouseUp
> 
> /* In the stack script of  BAD-GAMESTACK */
> 
> on closeStack
>    ## Reset custom props of some grouped objects.
>    ## Clear pending messages
>    ## Clear the cachedURLs.
>    set the lockScreen to true
>    ## Set to empty the filename of 100 images.
>    set the lockScreen to false
>    go to card "main" of stack "gss"
>    show stack "gss"
>    delete stack "blitz"
> end closeStack
> 
> /* In the card script of  BAD-GAMESTACK, which script
>    calls up the NAVIGATION-SUBSTACK that can take
>    user back to CENTRALSTACK.  */
> 
> on rawKeyUp theKey
>    switch theKey
>       case "56"
>          modal stack NAVIGATION-SUBSTACK
>          pass rawKeyUp
>          exit rawKeyUp
>          exit to top
>          break
>     end switch
> end rawKeyUp
> 
> on closecard
>    ## Clear the cachedURLs.
>    ## Cancel pending messages.
>    ## Reset custom props.
>    ## For each of 100 image objects:
>    ##   reset filename to "", outerglow,
>    ##   and innerglow.
>    ## Close the socket connection to
>    ## the local server.
> end closecard
> 
> /* In the card script of  NAVIGATION-SUBSTACK. */
> 
> on rawKeyUp theKey
>    put "49,50,51,52" into tGameControllerRightsideButtons
>    if theKey is not among the items of tGameControllerRightsideButtons
then
>       pass rawKeyUp
>       exit rawKeyUp
>    end if
>   ## Find which navigational image is on.
>    switch tCurentlyOnImage
>       case "quit"
>          send "closeStack" to stack BAD-GAMESTACK in 2 seconds
>          close this stack -- i.e., NAVIGATION-SUBSTACK... should I
> name the stack explicitly here?
>          exit to top
>          break
>    end switch
> end rawKeyUp
> 
> ------     E N D    O F     S C R I P T S   -----
> 
> _______________________________________________
> use-livecode mailing list
> use-livecode at lists.runrev.com
> Please visit this url to subscribe, unsubscribe and manage your
subscription
> preferences:
> http://lists.runrev.com/mailman/listinfo/use-livecode





More information about the Use-livecode mailing list