Abnormal Thread Termination

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Guest

I have a problem in my multithreaded application. The problem is reproducible
very rarely, only once in 6000 similar execution (through same code path).

Problem: One of multiple threads gets abnormally terminated. It does not
goes through the try-catch-finally sequence. The mehtod gets hanged and the
object used inside the method gets collected by GC.

Bacground about the application: I am using COM-Interop. The threads are
created in unmanaged code which calls methods from managed code. One of the
thread abnormally terminates when executing .NET method.

Observation: I have observed that the thread terminates only in those
methods where I am using IO Stream operation.

As I said this is very rare and the same code works fine except once or
twice in 6000 executions.

This is the code under which thread terminates mostly.

<CODE>

// I am generating log file for comments, to see the actual execution path
public string GetRequestFile(string strFileName)
{
// Log method enterd
StreamReader reader = null;
try
{
reader = new StreamReader(strFileName);
return reader.ReadToEnd();
}
catch(Exception exc)
{
// Log error occurred
throw;
}
finally
{
if(reader != null)
reader.Close();
// Log finally executed
}
}

<CODE>

Please let me know if there is any similar bug reported under .NET I/O
Stream operation.

Thanks in advance for your help.

Cheers,
Rahul Anand
 
stop cross posting, you already got two replies in the other newsgroup. did
you check these solutions before posting here?

--
Regards,
Alvin Bruney - ASP.NET MVP

[Shameless Author Plug]
The Microsoft Office Web Components Black Book with .NET
Now available @ www.lulu.com/owc, Amazon.com etc
 
Hi Alvin,

I have posted my problem in this group and at the same time in other gorups
related to CLR and INTEROP as I was not sure where I can get a solution. And
the problem is related to C#, and HowThreading is Handled by CLR, and also
the scenario involves of COM-InterOP. Therefore I have posted my problem to
all related groups so that all related community will be benifitted with this
discussion.

Regards,
Rahul Anand

Alvin Bruney said:
stop cross posting, you already got two replies in the other newsgroup. did
you check these solutions before posting here?

--
Regards,
Alvin Bruney - ASP.NET MVP

[Shameless Author Plug]
The Microsoft Office Web Components Black Book with .NET
Now available @ www.lulu.com/owc, Amazon.com etc
Rahul Anand said:
I have a problem in my multithreaded application. The problem is
reproducible
very rarely, only once in 6000 similar execution (through same code path).

Problem: One of multiple threads gets abnormally terminated. It does not
goes through the try-catch-finally sequence. The mehtod gets hanged and
the
object used inside the method gets collected by GC.

Bacground about the application: I am using COM-Interop. The threads are
created in unmanaged code which calls methods from managed code. One of
the
thread abnormally terminates when executing .NET method.

Observation: I have observed that the thread terminates only in those
methods where I am using IO Stream operation.

As I said this is very rare and the same code works fine except once or
twice in 6000 executions.

This is the code under which thread terminates mostly.

<CODE>

// I am generating log file for comments, to see the actual execution path
public string GetRequestFile(string strFileName)
{
// Log method enterd
StreamReader reader = null;
try
{
reader = new StreamReader(strFileName);
return reader.ReadToEnd();
}
catch(Exception exc)
{
// Log error occurred
throw;
}
finally
{
if(reader != null)
reader.Close();
// Log finally executed
}
}

<CODE>

Please let me know if there is any similar bug reported under .NET I/O
Stream operation.

Thanks in advance for your help.

Cheers,
Rahul Anand
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