Exception in ~PProcess() destructor (probably triggered by SIP reinvite)

Hi,

The OS is Windows, the exception is in 'win32.cxx'. The
exception is:

First-chance exception at 0x006fa73c in MyApp.exe:
0xC0000005: Access
violation reading location 0x029622b8. 

The stack trace is:

>	MyApp.exe!PProcess::~PProcess()  Line 1606 + 0xb	C++
 	MyApp.exe!_Main::~_Main()  Line 19 + 0x8	C++
 	MyApp.exe!$E5()  + 0xd	C++
 	msvcr71d.dll!doexit(int code=0, int quick=0, int
retcaller=0)
Line 376	C
 	msvcr71d.dll!exit(int code=0)  Line 303 + 0xd	C
 	MyApp.exe!WinMainCRTStartup()  Line 406	C
 	kernel32.dll!7c816fd7() 	
 	ntdll.dll!7c915b4f() 	

In the "reinvite situation" activeThreads
contains two threads, but the
second one seems to point to some invalid memory. 

In the other situation activeThreads contains only one
thread.

-----Original Message-----
From: openh323-adminopenh323.org [mailto:openh323-adminopenh323.org]
On Behalf Of Paul Rolland
Sent: dinsdag 15 augustus 2006 18:39
To: openh323openh323.org
Subject: RE: [OpenH323]Exception in ~PProcess() destructor
(probably
triggered by SIP reinvite)
Importance: Low

Hello,

More details on the exception ? 
Also, IsTerminated is OS-dependant... Which OS are you using
?

Regards,
Paul

Paul Rolland, rol(at)as2917.net
ex-AS2917 Network administrator and Peering Coordinator

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> -----Original Message-----
> From: openh323-adminopenh323.org
> [mailto:openh323-adminopenh323.org] On Behalf Of
Jaap van Hengstum
> Sent: Tuesday, August 15, 2006 4:12 PM
> To: openh323openh323.org
> Subject: [OpenH323]Exception in ~PProcess() destructor
(probably 
> triggered by SIP reinvite)
> 
> Hi,
> 
> I get an exception when closing my application in the
line indicated 
> below. I believe this exception is triggered when the
application 
> receives a SIP reinvite since no exception occurs when
there is no 
> reinvite. I'm using Opal 2.2.2 and pwLib 1.10.1.
> 
> Any of you guys have a clue to what I might be doing
wrong, or if it's

> a bug in the library?
> 
> Thanks,
> Jaap.
> 
> ---
> PProcess::~PProcess()
> {
>   // do whatever needs to shutdown
>   PreShutdown();
> 
>   Sleep(100);  // Give threads time to die a natural
death
> 
>   // Get rid of the house keeper (majordomocide)
>   delete houseKeeper;
> 
>   // OK, if there are any left we get really
insistent...
>   activeThreadMutex.Wait();
>   for (PINDEX i = 0; i < activeThreads.GetSize();
i++) {
>     PThread & thread = activeThreads.GetDataAt(i);
>     if (this != &thread &&
!thread.IsTerminated())		// <==
> !!!!! EXCEPTION !!!!!!
>       TerminateThread(thread.GetHandle(), 1);  // With
extreme 
> prejudice
>   }
>   activeThreadMutex.Signal();
> 
>   deleteThreadMutex.Wait();
>   autoDeleteThreads.RemoveAll();
>   deleteThreadMutex.Signal();
> 
> #if PMEMORY_CHECK || _DEBUG
>   extern void PWaitOnExitConsoleWindow();
>   PWaitOnExitConsoleWindow();
> #endif
> }
> ----
>
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Check the FAQ before asking! - http://www.
openh323.org/~openh323/fom.cgi
The OpenH323 Project mailing list, using Mailman. To
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Maintained by Quicknet Technologies, Inc - http://www.quicknet.net
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