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static const char *RcsId = "$Id: thsig.cpp 27410 2015-01-27 05:46:17Z taurel $\n$Name$";
//+=============================================================================
//
// file : thsig.cpp
//
// description : C++ source for the DServer class and its commands.
// The class is derived from Device. It represents the
// CORBA servant object which will be accessed from the
// network. All commands which can be executed on a
// DServer object are implemented in this file.
//
// project : TANGO
//
// author(s) : A.Gotz + E.Taurel
//
// Copyright (C) : 2004,2005,2006,2007,2008,2009,2010,2011,2012,2013,2014,2015
// European Synchrotron Radiation Facility
// BP 220, Grenoble 38043
// FRANCE
//
// This file is part of Tango.
//
// Tango is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Tango is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with Tango. If not, see <http://www.gnu.org/licenses/>.
//
// $Revision: 27410 $
//
//-=============================================================================
#if HAVE_CONFIG_H
#include <ac_config.h>
#endif
#include <tango.h>
#include <dserversignal.h>
extern omni_thread::key_t key_py_data;
namespace Tango
{
void *DServerSignal::ThSig::run_undetached(TANGO_UNUSED(void *ptr))
{
#ifndef _TG_WINDOWS_
sigset_t sigs_to_catch;
//
// Catch main signals
//
sigemptyset(&sigs_to_catch);
sigaddset(&sigs_to_catch,SIGINT);
sigaddset(&sigs_to_catch,SIGTERM);
sigaddset(&sigs_to_catch,SIGHUP);
sigaddset(&sigs_to_catch,SIGQUIT);
//
// Init thread id and pid (for linux !!)
//
my_thread = pthread_self();
{
omni_mutex_lock syn(*ds);
my_pid = getpid();
ds->signal();
}
#endif
int signo = 0;
//
// The infinite loop
//
while(1)
{
#ifndef _TG_WINDOWS_
int ret = sigwait(&sigs_to_catch,&signo);
// sigwait() under linux might return an errno number without initialising the
// signo variable. Do a ckeck here to avoid problems!!!
if ( ret != 0 )
{
cout4 << "Signal thread awaken on error " << ret << endl;
continue;
}
cout4 << "Signal thread awaken for signal " << signo << endl;
if (signo == SIGHUP)
continue;
#else
WaitForSingleObject(ds->win_ev,INFINITE);
signo = ds->win_signo;
cout4 << "Signal thread awaken for signal " << signo << endl;
#endif
//
// Create the per thread data if not already done
//
if (th_data_created == false)
{
omni_thread::self()->set_value(key_py_data,new PyData());
th_data_created = true;
}
#ifndef _TG_WINDOWS_
//
// Add a new signal to catch in the mask
//
{
omni_mutex_lock sy(*ds);
if (signo == SIGINT)
{
bool job_done = false;
if (ds->sig_to_install == true)
{
ds->sig_to_install = false;
sigaddset(&sigs_to_catch,ds->inst_sig);
cout4 << "signal " << ds->inst_sig << " installed" << endl;
job_done = true;
}
//
// Remove a signal from the catched one
//
if (ds->sig_to_remove == true)
{
ds->sig_to_remove = false;
sigdelset(&sigs_to_catch,ds->rem_sig);
cout4 << "signal " << ds->rem_sig << " removed" << endl;
job_done = true;
}
if (job_done == true)
{
ds->signal();
continue;
}
}
}
#endif
DevSigAction *act_ptr = &(DServerSignal::reg_sig[signo]);
//
// First, execute all the handlers installed at the class level
//
if (act_ptr->registered_classes.empty() == false)
{
long nb_class = act_ptr->registered_classes.size();
for (long j = 0;j < nb_class;j++)
{
act_ptr->registered_classes[j]->signal_handler((long)signo);
}
}
//
// Then, execute all the handlers installed at the device level
//
if (act_ptr->registered_devices.empty() == false)
{
long nb_dev = act_ptr->registered_devices.size();
for (long j = 0;j < nb_dev;j++)
{
act_ptr->registered_devices[j]->signal_handler((long)signo);
}
}
//
// For the automatically installed signal, unregister servers from database,
// destroy the ORB and exit
//
if (auto_signal(signo) == true)
{
Tango::Util *tg = Tango::Util::instance();
if (tg != NULL)
{
try
{
tg->shutdown_ds();
}
catch(...)
{
#ifndef _TG_WINDOWS_
raise(SIGKILL);
#endif
}
}
}
}
return NULL;
}
} // End of Tango namespace
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