[tracker-miner-chatlog] main: Add SIGTERM/SIGINT handler

[Carlos Garnacho <carlosg src gnome org>]

commit 36263aa4ced7ed75c93e8019f68104c6f831da74
Author: Carlos Garnacho <carlosg gnome org>
Date:   Sun Jan 17 20:28:48 2016 +0100

    main: Add SIGTERM/SIGINT handler
    
    So we can just quit the main loop. Helps when tracking lost
    memory in valgrind.

 src/main.c |   28 ++++++++++++++++++++++++++++
 1 files changed, 28 insertions(+), 0 deletions(-)
---
diff --git a/src/main.c b/src/main.c
index 10fd4c8..56ba5a6 100644
--- a/src/main.c
+++ b/src/main.c
@@ -19,8 +19,35 @@
  * Author: Carlos Garnacho <carlosg gnome org>
  */
 
+#include <glib-unix.h>
 #include "miner.h"
 
+static gboolean
+signal_handler (gpointer user_data)
+{
+       GMainLoop *loop = user_data;
+       static gboolean in_loop = FALSE;
+
+       /* Die if we get re-entrant signals handler calls */
+       if (in_loop) {
+               _exit (EXIT_FAILURE);
+       }
+
+       in_loop = TRUE;
+       g_main_loop_quit (loop);
+
+       return G_SOURCE_CONTINUE;
+}
+
+static void
+initialize_signal_handler (GMainLoop *loop)
+{
+#ifndef G_OS_WIN32
+       g_unix_signal_add (SIGTERM, signal_handler, loop);
+       g_unix_signal_add (SIGINT, signal_handler, loop);
+#endif /* G_OS_WIN32 */
+}
+
 int
 main (int   argc,
       char *argv[])
@@ -38,6 +65,7 @@ main (int   argc,
        }
 
        loop = g_main_loop_new (NULL, FALSE);
+       initialize_signal_handler (loop);
        g_main_loop_run (loop);
        return 0;
 }