memory - why isn't it getting freed

Robert Brenstein rjb at
Tue Aug 10 19:55:40 EDT 2004

On 8/9/04 9:00 AM, Chris Sheffield wrote:

>Can anyone tell me the reasons for memory not getting freed up like it
>I have an application that consists of a login stack, another main stack
>where most of the program functionality occurs, and then several other
>external stacks (stored as compressed data in a Valentina database) that
>contain multimedia content such as graphics, audio files, text, etc.  These
>stacks get extracted from the database, decompressed, and then accessed to
>retrieve that content.  The problem is, when I'm done with these external
>stacks, I use the delete stack command, which should remove them from
>memory, but it doesn't.  I have checked every function I can think of
>(revLoadedStacks, openStacks, stacksInUse, etc.) to see if Rev thinks these
>stacks are still open in some way, but that is not the case.  The memory
>just doesn't get freed.  It doesn't return to normal until I completely exit
>my application.  This is not a good thing because used memory keeps building
>up and up, until eventually the application crashes because the system has
>run out of memory.
>This is a serious problem, and I'm not sure if it's something I'm doing
>wrong, or if I've discovered some bug in Rev.  So what I'm wondering is,
>what would cause memory to not get freed the way it should?  Files that the
>stacks might have open perhaps?  But if that were the case, why would the
>stack not appear when using one of the above functions?  Anything else?

I suspect that at least some of the non-freed memory is coming from 
Valentina caching. When you extract your stacks, the extracted 
content is cached by valentina before being passed to Rev.

Robert Brenstein

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