Yes.
And it makes sense now. I just wasn't thinking along those lines until the
MS guy said something about it and I had time to think about it for a while.
It's always something. LOL.
I didn't equate the GC having issues with debugger and the size of the
struct.
On 6/21/07, Paul van Brenk <[EMAIL PROTECTED]> wrote:
Uh.. A struct is always passed by value (ie. Copied). A class is passed by
reference (just the pointer)... So yeah, I can imagine copying a struct with
the size you describe could be a problem for the GC.
-----Original Message-----
From: Discussion of advanced .NET topics. [mailto:
[EMAIL PROTECTED] On Behalf Of Mike Andrews
Sent: Thursday, June 21, 2007 17:47
To: ADVANCED-DOTNET@DISCUSS.DEVELOP.COM
Subject: Re: [ADVANCED-DOTNET] PRB: Cannot evaluate expression because a
thread is stopped at a point where garbage collection is impossible...
I think I've discovered the issue and after talking with a Microsoft
technical support rep.
The rep didn't have an answer, but made a reference to the number of
parameters which led me to look further.
The issue seems to be the total size of all parameters passed in to the
method.
The "details" parameter in the _groups.Load(...) method is a struct.
The struct itself is quite large in size with about 30 fields that contain
DataTables, DataRelations and DataRows.
When I converted the struct to a class, the problem disappeared. It seems
to be that the struct cannot be passed byval like a class when the size of
the struct is greater than some [unknown] value.
A very weird problem indeed.
Thanks,
Mike
On 6/21/07, J. Merrill <[EMAIL PROTECTED]> wrote:
>
> Well, the class referenced by _groups must have a method called
> Load. What's in it? Have you tried commenting out different lines in
the
> Load method to see what no longer "keeps the ability to display values
> working"?
>
> At 04:33 PM 6/20/2007, Mike Andrews wrote (in part)
>
> > private void Load(Guid guid, MarType type, DateTime startDate,
> >TransactionContext transaction){
> > //Nothing is readable in here except intrinsic data types
> > ...
> > //This is the line, that when commented out, keeps the ability to
> >display values working
> > _groups.Load(details, type, startDate);
> > }
> >
> >}
> >
> >_groups is a variable that references a custom class (that inherits
> directly
> >from System.Object) that has no "special" functionality in it
whatsoever.
>
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> J. Merrill / Analytical Software Corp
>
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