Memory leak in Wince 5.0 filesystem

[Magneto]

Hi all,

I have noticed that there is some memory leak on wince 5.0/
winMobile 6, when u copy a file and then delete it.
steps to reproduce
1) copy any file to \\my documents (or any folder on wince platform)
note down the total memory and INUSE memory from control panel

2) now delete the file (completely even from recycle bin), now note
down the total and INUSE memory , u will see that the INUSE memory has
increased, it stays like this until phone is reset.

Has anybody seen this problem?, this is quiet significant as , if u
copy a large file and delete , then u will see must more memory lost.
Would be really grateful if anybody could help.

[r_z_...@pen_fact.com]

On Mon, 28 Jul 2008 15:53:25 -0700 (PDT), Magneto <mui...@gmail.com>
wrote:

I'm definitely not the best person to answer, but maybe better than no
one. I haven't kept close track, but last I heard, garbage collection
is slow for Windows CE (and thus Windows Mobile). So the leak you
detected may be temporary. My apps copy files quite a bit with no
noticeable leak.

-----------------------------------------
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Robert E. Zaret, eMVP
PenFact, Inc.
20 Park Plaza, Suite 478
Boston, MA 02116
www.penfact.com

[Magneto]

On Jul 29, 11:24 am, r_z_aret@pen_fact.com wrote:
> On Mon, 28 Jul 2008 15:53:25 -0700 (PDT), Magneto <muiz...@gmail.com>

> wrote:
>
> >Hi all,
>
> >     I have noticed that there is some memory leak on wince 5.0/
> >winMobile 6, when u copy a file and then delete it.
> >steps to reproduce
> >1) copy any file to \\my documents (or any folder on wince platform)
> >note down the total memory and INUSE memory from control panel
>
> >2) now delete the file (completely even from recycle bin), now note
> >down the total and INUSE memory , u will see that the INUSE memory has
> >increased, it stays like this until phone is reset.
>
> >Has anybody seen this problem?, this is quiet significant as , if u
> >copy a large file and delete , then u will see must more memory lost.
> >Would be really grateful if anybody could help.
>
> I'm definitely not the best person to answer, but maybe better than no
> one. I haven't kept close track, but last I heard, garbage collection
> is slow for Windows CE (and thus Windows Mobile). So the leak you
> detected may be temporary. My apps copy files quite a bit with no
> noticeable leak.
>

> Thanks Robert for your reply, I did check if the memory leak remains for sometime and frees up, but it does not,
it frees up only after reset, I see the memory leak is about 200kb,
is this fine and normal? i am seeing the memory usage from
the control panel, system memory. I also run the App verifier , in
which i run the filesys.exe, i got the following log, but i assume the
filesys.exe is always running and does not stop , so maybe the log
below is not right, is device.exe also invloved in file creation and
deletion?,
As i know in our platform, what ever we store on the desktop , it gets
stored onto our flash, could the filsytem (FatFS) have any problem,
I would really appreciate your help

# LOGENTRY shim_heap.dll 13 'Non-destroyed heap

The application created a heap, and did not destroy it.
# DESCRIPTION END
# LOGENTRY shim_heap.dll 14 'Can't destroy process heap
# DESCRIPTION BEGIN
The application attempted to destroy the process heap.
# DESCRIPTION END
# LOGENTRY shim_heap.dll 15 'Injected a heap fault
# DESCRIPTION BEGIN
The shim is injecting a heap fault into the application. The
application should handle this fault gracefully.
# DESCRIPTION END
| shim_verifier.dll 1 | 0 shim_verifier.dll 0'filesys.exe - 4:00:55 AM