1. #include <gio/gio.h>
2. #include <stdlib.h>
3. #include <string.h>
4. ​
5. gpointer current_data = NULL;
6. GMutex data_mutex;
7. GCond data_cond;
8. ​
9. void push_data(gpointer data) {
10. g_mutex_lock(&data_mutex);
11. current_data = data;
12. g_cond_signal(&data_cond);
13. g_mutex_unlock(&data_mutex);
14. }
15. ​
16. gpointer pop_data_timed(void) {
17. gint64 end_time;
18. gpointer data;
19. ​
20. g_print("start timer:\t%ld\n", g_get_monotonic_time());
21. ​
22. g_mutex_lock(&data_mutex);
23. ​
24. end_time = g_get_monotonic_time() + 5 * G_TIME_SPAN_SECOND;
25. g_print("wait until:\t%ld\n", end_time);
26. while (!current_data)
27. if (!g_cond_wait_until(&data_cond, &data_mutex, end_time)) {
28. g_print("timeout:\t%ld\n", g_get_monotonic_time());
29. // timeout has passed.
30. g_mutex_unlock(&data_mutex);
31. return NULL;
32. }
33. ​
34. // there is data for us
35. data = current_data;
36. current_data = NULL;
37. ​
38. g_mutex_unlock(&data_mutex);
39. ​
40. return data;
41. }
42. ​
43. int main(int argc, char **argv) {
44. GApplication *app;
45. int status;
46. ​
47. app = g_application_new("org.gtk.TestApplication", G_APPLICATION_HANDLES_COMMAND_LINE);
48. g_signal_connect(app, "command-line", G_CALLBACK(pop_data_timed), NULL);
49. g_application_set_inactivity_timeout(app, 10000);
50. ​
51. status = g_application_run(app, argc, argv);
52. ​
53. g_object_unref(app);
54. ​
55. return status;
56. }