[omniORB] Server Shutdown on multi-processor machines

[Serguei Kolos]

Hi
Unfortunately I did not manage to find a workaround for that problem.
Some people mentioned that the problem might show up because the
compiler itself was probably built without proper thread support. If you
could manage to rebuild properly your gcc-2.95 this might help you to
solve the problem.

Cheers,
Sergei

Sharma, Ramesh wrote:

> It seems almost impossible for me to move to gcc3.2 for my server, i 
> there is a work around (even if it is dirty one) which can be used to 
> fix the mult-threading problem on multiprocessor machines using 
> gcc-2.95.3.
>
>  
>
> -----Original Message-----
> From: omniorb-list-bounces at omniorb-support.com 
> [mailto:omniorb-list-bounces at omniorb-support.com] On Behalf Of Serguei 
> Kolos
> Sent: Friday, March 26, 2004 2:02 AM
> To: omniorb-list at omniorb-support.com
> Subject: Re: [omniORB] Server Shutdown on multi-processor machines
>
>  
>
> Hi
> I have similar problem using gcc-2.95.2.
> With gcc3.2 this never happens independently of which machine
> I'm using, i.e. single processor or dual.
>
> Cheers,
> Sergei
>
> Sharma, Ramesh wrote:
>
> I looked into it little further and seems like the problem is while 
> destroying the omni_mutex
>
>  
>
> ++++++++++++++++++++++ posix.cc ++++++
>
> omni_mutex::~omni_mutex(void)
>
> {
>
>     THROW_ERRORS(pthread_mutex_destroy(&posix_mutex));
>
> }
>
> ++++++++++++++++
>
>  
>
> Looks like signal is raised from here and my signal handler catches it 
> and reports that as failure. Looks like some weird problem in 
> multithreaded environment. Any suggestions on getting around it will 
> be really appreciated.
>
>  
>
> Thanks,
>
> Ramesh
>
> -----Original Message-----
> From: omniorb-list-bounces at omniorb-support.com 
> <mailto:omniorb-list-bounces at omniorb-support.com> 
> [mailto:omniorb-list-bounces at omniorb-support.com] On Behalf Of Sharma, 
> Ramesh
> Sent: Thursday, March 25, 2004 3:20 PM
> To: omniorb-list at omniorb-support.com 
> <mailto:omniorb-list at omniorb-support.com>
> Subject: [omniORB] Server Shutdown on multi-processor machines
>
>  
>
> Hi,
>
>  
>
> I am having following problem with CORBA 4.0.3 on Red-hat linux 7.1 
> (client is compiled using gcc3.2 and server is compiled using 
> gcc2.95.3 due to some avoidable reasons).
>
>  
>
> 1.      Things work fine on a machine which is single processor.
>
> 2.      Things don't work on multiprocessors machines. I  get a 
> SIGSEGV while shutting down server.  Below is the segment of the trace 
> I got
>
>  
>
> +++++++++++++++++++++++++++++++++++++++++++++++++++++++
>
> 0000 0000 0000 0000                     ........
>
> omniORB: POA(child) etherealising object root/child<0> (deactivating).
>
> omniORB: omniRemoteIdentity deleted.
>
> omniORB: ObjRef(IDL:BlastSim/FaultSimFactory:1.0) -- deleted.
>
> omniORB: Preparing to shutdown ORB.
>
> omniORB: Destroying POA(RootPOA).
>
> omniORB: Destroying POA(child).
>
> omniORB: Deactivating all POA(child)'s objects.
>
> omniORB: Waiting for requests to complete on POA(child).
>
> omniORB: Requests on POA(child) completed.
>
> omniORB: Etherealising POA(child)'s objects.
>
> omniORB: Destruction of POA(child) complete.
>
> omniORB: Deactivating all POA(RootPOA)'s objects.
>
> omniORB: Waiting for requests to complete on POA(RootPOA).
>
> omniORB: Requests on POA(RootPOA) completed.
>
> omniORB: Etherealising POA(RootPOA)'s objects.
>
> omniORB: Stopping serving incoming endpoints.
>
> omniORB: throw giopStream::CommFailure from 
> giopStream.cc:828(0,NO,COMM_FAILURE_UnMarshalArguments)
>
> omniORB: giopServer waits for completion of rendezvousers and workers
>
> User time = 0:00:00(0) System time = 0:00:00(0) Memory usage = 
> 4.18MDefault signal handler received SIGSEGV
>
>  
>
> Same exception gets thrown on both machines but on single processor 
> machine the exception gets handled and server shuts down gracefully. I 
> am not sure why on multi-processor machines it is behaving 
> differently. Is it the compiler version which might be making difference?
>
>  
>
> Has anybody something like this?
>
>  
>
> Ramesh
>
>  
>
> 
>
>
>
>------------------------------------------------------------------------
>
>
> 
>
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