src/bin/lttng-sessiond/process-utils.c

   1 /*
   2  * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
   3  *                      Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   4  *               2013 - Jérémie Galarneau <jeremie.galarneau@efficios.com>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License, version 2 only,
   8  * as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18  */
  19
  20 #include <signal.h>
  21 #include "lttng-sessiond.h"
  22
  23 /* Notify parents that we are ready for cmd and health check */
  24 void sessiond_signal_parents(void)
  25 {
  26         /*
  27          * Notify parent pid that we are ready to accept command
  28          * for client side.  This ppid is the one from the
  29          * external process that spawned us.
  30          */
  31         if (config.sig_parent) {
  32                 kill(ppid, SIGUSR1);
  33         }
  34
  35         /*
  36          * Notify the parent of the fork() process that we are
  37          * ready.
  38          */
  39         if (config.daemonize || config.background) {
  40                 kill(child_ppid, SIGUSR1);
  41         }
  42 }