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Re: Stack overflow using PdfWriter

by Gylfi Ingvason :: Rate this Message:

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Thank you guys.

The job runs to completion with 8 MB of stack using PdfSmarCopy. It still dies with 16 MB using PdfWriter. I've now increased the stack to 80 MB and the job is still cooking.

I was aware of the need to bump the stack for large operations, but when you go beyond 20 MB of stack space when processing 200 MB of data, then, in my opinion, something is not right. Keeping a tree balanced should not require that much stack. For my job, we're talking roughly 35,000 pages, which is quite a bit, but not astronomical by any standards. I may experiment with increasing the branch size from 10 to a 100 and see if that makes a difference, but to me, this sounds like a bug, and if fixed, it will likely also increase processing speed dramatically for large files.

Gylfi

From: Adrian Rotaru [mailto:adrian.rotaru@...]
Sent: Tuesday, June 23, 2009 3:47 AM
To: Post all your questions about iTextSharp here
Subject: Re: [itextsharp-questions] Stack overflow using PdfWriter

I also had to increase the stack size to make it work..

Adrian

----- Original Message -----

From: fhtino@...

To: Gylfi.Ingvason@... ; itextsharp-questions@...

Sent: Tuesday, June 23, 2009 10:38 AM

Subject: Re: [itextsharp-questions] Stack overflow using PdfWriter

I had the same problem. My environment was IIS6 but it's the same problem.
The only solution I found was increasing the stack size of the process/thread.

http://sourceforge.net/mailarchive/forum.php?thread_name=2433d6a90804080219u3c60cf17k8ab46345950764f6@...&forum_name=itextsharp-questions

http://fhtino.blogspot.com/2008/04/iis6-stackoverflow.html

fabrizio

On Mon, Jun 22, 2009 at 9:55 PM, Gylfi Ingvason <Gylfi.Ingvason@...> wrote:

I'm getting a stack overflow error when concatenating a bunch of files using
PdfWriter. This occurs in Tree.cs (/trunk/src/coreSystem/util/Collections)
where the private Insert member appears to get into a state where it calls
itself recursively until an exception occurs.
........

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