Dear Rooters, well, it seems you can forget my question. I grep'ed a bit more around... SA_RESTART flag set on struct sigaction should solve the problem and I commented that definitely out in my call to sigaction() ... And in TUnixSystem::UnixSignal() it is done ! Sorry for bothering everybody here. Cheers Hermann-Josef -----Ursprüngliche Nachricht----- Von: owner-roottalk@pcroot.cern.ch [mailto:owner-roottalk@pcroot.cern.ch] Im Auftrag von Mathes, Hermann-Josef Gesendet: Dienstag, 13. Juli 2004 09:49 An: roottalk@cern.ch Betreff: [ROOT] EINTR handled in TSocket ? Dear Rooters, I am in doubt that EINTR is handled properly in the TSocket class. There was a message from Fons a long time ago concerning this subject (http://root.cern.ch/cgi-bin/print_hit_bold.pl/root/roottalk/roottalk01/2317.html), but I could not find it in the code (TUnixSystem::UnixSend(), TUnixSystem::SendRaw(), TSocket::Send() and TSocket::SendRaw()). I have checked it in the sources of 3.00, 3.02, 3.05/07 (the version our project uses) and the CVS HEAD version. This is my code fragment and I am using the alarm() function to send periodically signals to my application: cout << "Sending event # " << header->GetEventNo() << endl; mess.Reset(); mess.SetWhat( kMESS_OBJECT ); mess.WriteObject( event ); length = socket->Send( mess ); if ( length <= 0 ) { cerr << "TSocket::Send() - length= " << length << endl; cerr << "TSystem::GetErrno()= " << gSystem->GetErrno() << endl; } This is the printout when the SIGALARM happens during/near the socket transaction: Sending event # 11941 SigAlarmHandler() was called at 1089647658 ! SigAlarmHandler() was called at 1089647659 ! TSocket::Send() - length= -1 TSystem::GetErrno()= 4 I am overwriting the ROOT signal handler for SIGALARM through sigaction(). Could you please comment on it or help me to open my eyes ... ? If it is not handled what is your suggestion ? Thanks for any help, suggestions etc. Regards Hermann-Josef ************************************************************************** * Visit my new homepage !!! new look & feel !!! new information !!! * * http://www-ik.fzk.de/~mathes/Welcome.htm <http://www-ik.fzk.de/~mathes/Welcome.htm> * ************************************************************************** * * * Dr. Hermann-Josef Mathes * * KASCADE & AUGER Collaboration * * Forschungszentrum Karlsruhe Phone: +49 7247 822429 * * Institut für Kernphysik FAX: +49 7247 824075 * * POB 3640 * * D-76021 Karlsruhe/Germany Mail: Hermann-josef.mathes@ik.fzk.de * * * **************************************************************************
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