PrintToDevices memory leak?

rbuser

Hi,

I'm getting quite a few memory leaks when I call printtodevices (just
printing to a text file). I'm freeing everything I see to free. Sleuth is
reporting leaks in ppReport on lines 1827, 1739, and 1702. I don't have
these leaks when printing to the screen or directly to the printer. Here is
the sample code:

frmRpts.ppShipNote.DeviceType := 'dtReportTextFile';
frmRpts.ppShipNote.Print;
frmRpts.ppshipnote.free;
frmRpts.dsDT.Free;
frmRpts.DTPipe.Free;

Thanks for your help.

Ann Jackson

rbuser

Hi Ann,

what version of ReportBuilder are you using?
Do you have a memory leak problem, can you confirm Sleuth's finding?

regards,
Chris Ueberall;

rbuser

Hi Chris,

Thanks for your reply. I am using RB version 6.03 standard edition with
Delphi 5 Pro. As far as confirming Sleuth's findings, there is "something"
going on with the server that started when I deployed a program using the
printtodevices command. It is periodically freezing up and this program is
the only thing that has changed since the problem started. The program is
running about 20 times/day.

Sleuth reports the leaks in ppReport at lines 1827, 1739, 1702 and ppProd at
lines 1174, 1129, 1093. Seems to have to do with the publisher ie these:

1827 Publisher.ReceivePage(Engine.Page);
1739 Engine.RequestPage(TppPageRequest(aPageRequest));

etc.

I thought maybe a file was getting opened without being closed, but I don't
see any evidence of that happening (while digging thru RB source code).

Thanks again,

Ann

rbuser

One more thing. I misstated the command that is giving me problems:

It is the Print command that is printing to a dtReportTextFile.

Thanks,

Ann

rbuser

Ann,

memory leaks don't freezes a station periodically. If you have a 24/7 app you
should make sure there is no memory leak. But in your case they doesn't matter - if there are ones.
(And yes, multitasking in Windows is a pain, some would say 'a nice try')

regards,
Chris Ueberall;

rbuser

Hi Chris,

Thanks for the reply, however it makes no sense. I do not have leaks in my
source code, the leaks are in the RB print command. I had resolved leaks in
the print command with CloseDataPipelines, FreeBandsAndGroups,
FreeDesignControls. I ASSUMED that these commands would still resolve leaks
when printing to a file. Due to time constraints, I did not discover the
leaks until after deployment. I have found a solution to this problem--the
solution in this case is to build the needed text file w/o the rb tools.
Thanks anyway.

Ann

digitalmetaphors

Do you get leaks when running our main reports demo project? Run report
#107. It prints to ReportTextFile. If you find that it doesn't leak, then
please send a simple example that shows that RB is leaking to
support@digital-metaphors.com


Cheers,

Jim Bennett
Digital Metaphors