Re: [perl-win32-gui-users] memory management and Win32: :GUI

[pcourterelle <pco...@te...>]

The mistake is most definitely mine...Once I started dissecting the script I 
determined the memory surge was coming from a different module I was using 
and how I was importing data with it...I realized as Robert states below 
that the loading the Win32::GUI DLL takes about 6 mb and after that it's 
quite minimal....My apologies..

phil


----- Original Message ----- 
From: "Robert May" <rob...@us...>
To: <per...@li...>
Cc: <pco...@te...>; <jez...@ho...>
Sent: Wednesday, June 13, 2007 5:35 PM
Subject: Re: [perl-win32-gui-users] memory management and Win32: :GUI


>> From: "pcourterelle" <pco...@te...>
>> I've created several some simple scripts with Win32::GUI where there is
>> little more than a window, button and listview and the script is using 6 
>> MB
>> of memory. The memory usage increase dramatically each time a button is
>> clicked or the listview is populated. (the buttons do nothing more than
>> insert a static text item into the listview  - literally "bob" The memory
>> usuage never seems to decrease dynamically when the listview is reset.
>
> On 13/06/07, jez...@ho... <jez...@ho...> wrote:
>> Assuming you are using the latest version of Win32:GUI you don't need to 
>> do
>> anything special regarding memory management. When objects go out of 
>> scope
>> all memory and resources are released. Something else is going on - can 
>> you
>> post an example?
>
> I might believe the 6MB, depending on what figure you're quoting as
> 'memory usage'.  On the Win98 box I have in front of me, for a single
> blank window I get the follwoing figures (from WinTop):
>
> Allocated:   2632K    3984K
> In memory: 1080K    3032K
> In use:         848K    2408K
>
> That's close on 6MB of allocated memory - most of which is due to the
> DLL's that are loaded:
>
> Name                     Size
> ADVAPI32.DLL     0x10000 Win32 ADVAPI32 core component
> COMCTL32.DLL    0x88000 Common Controls Library
> COMDLG32.DLL   0x2D000 Common Dialogs DLL
> Cwd.dll                   0x5000 Perl Cwd
> GDI32.DLL            0x26000 Win32 GDI Core component
> GUI.dll                 0xBD000 Perl Win32::GUI
> KERNEL32.DLL    0x7A000 Win32 Kernel core component
> MSVCRT.DLL       0x46000 Microsoft C Runtime Library
> perl.exe                 0xB000 Perl.exe
> perl58.dll              0xC6000 Perl core DLL
> SHELL32.DLL     0x155000 Win32 Shell common Dll
> SHLWAPI.DLL      0x66000 Shell light-weight Dll
> USER32.DLL        0x11000 Win32 USER32 core component
> VERSION.DLL        0x6000 Win32 VERSION core component
>
> But I agree with Jez that if you're seeing significant (and you don't
> say what you think significant is) increases when clicking a button,
> then that doesn't sound right.  Some (simple) code that exhibits the
> problem, some information on what tool you're using to measure the
> memory usage, and the figures that you see would allow us to see if
> we're seeing the same problem.
>
> Regards,
> Rob.
>