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#include <glib.h>
#include <dbus/dbus.h>
#include <dbus/dbus-glib.h>
#include <time.h>
static gboolean send_ping (DBusConnection *bus);
static const char *v_STRING;
int main (int argc, char **argv)
{
GMainLoop *loop;
DBusConnection *bus;
DBusError error;
if (argc > 1)
v_STRING = argv[1];
else
v_STRING = "no arg given";
/* Create a new event loop to run in */
loop = g_main_loop_new (NULL, FALSE);
/* Get a connection to the session bus */
dbus_error_init (&error);
bus = dbus_bus_get (DBUS_BUS_SESSION, &error);
if (!bus) {
g_warning ("Failed to connect to the D-BUS daemon: %s", error.message);
dbus_error_free (&error);
return 1;
}
/* Set up this connection to work in a GLib event loop */
dbus_connection_setup_with_g_main (bus, NULL);
/* Every second call send_ping() with the bus as an argument*/
g_timeout_add (1000, (GSourceFunc)send_ping, bus);
/* Start the event loop */
g_main_loop_run (loop);
return 0;
}
static gboolean send_ping (DBusConnection *bus)
{
DBusMessage *message;
struct timespec tx_time;
struct timespec done_time;
message = dbus_message_new_signal ("/de/linutronix/Ping",
"de.linutronix.Ping", "Ping");
/* Append the string to the signal */
dbus_message_append_args (message,
DBUS_TYPE_STRING, &v_STRING,
DBUS_TYPE_INVALID);
clock_gettime(CLOCK_MONOTONIC, &tx_time);
/* Send the signal */
dbus_connection_send (bus, message, NULL);
clock_gettime(CLOCK_MONOTONIC, &done_time);
g_print("%d:%d\n%d:%d\n\n", tx_time.tv_sec, tx_time.tv_nsec/1000,
done_time.tv_sec, done_time.tv_nsec/1000);
/* Free the signal now we have finished with it */
dbus_message_unref (message);
/* Return TRUE to tell the event loop we want to be called again */
return TRUE;
}
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