1 /* Unit tests for GMainLoop
2 * Copyright (C) 2011 Red Hat, Inc
3 * Author: Matthias Clasen
5 * This work is provided "as is"; redistribution and modification
6 * in whole or in part, in any medium, physical or electronic is
7 * permitted without restriction.
9 * This work is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
13 * In no event shall the authors or contributors be liable for any
14 * direct, indirect, incidental, special, exemplary, or consequential
15 * damages (including, but not limited to, procurement of substitute
16 * goods or services; loss of use, data, or profits; or business
17 * interruption) however caused and on any theory of liability, whether
18 * in contract, strict liability, or tort (including negligence or
19 * otherwise) arising in any way out of the use of this software, even
20 * if advised of the possibility of such damage.
24 #include "glib-private.h"
27 static gboolean cb (gpointer data)
32 static gboolean prepare (GSource *source, gint *time)
36 static gboolean check (GSource *source)
40 static gboolean dispatch (GSource *source, GSourceFunc cb, gpointer date)
45 GSourceFuncs funcs = {
53 test_maincontext_basic (void)
58 gpointer data = &funcs;
60 ctx = g_main_context_new ();
62 g_assert (!g_main_context_pending (ctx));
63 g_assert (!g_main_context_iteration (ctx, FALSE));
65 source = g_source_new (&funcs, sizeof (GSource));
66 g_assert_cmpint (g_source_get_priority (source), ==, G_PRIORITY_DEFAULT);
67 g_assert (!g_source_is_destroyed (source));
69 g_assert (!g_source_get_can_recurse (source));
70 g_assert (g_source_get_name (source) == NULL);
72 g_source_set_can_recurse (source, TRUE);
73 g_source_set_name (source, "d");
75 g_assert (g_source_get_can_recurse (source));
76 g_assert_cmpstr (g_source_get_name (source), ==, "d");
78 g_assert (g_main_context_find_source_by_user_data (ctx, NULL) == NULL);
79 g_assert (g_main_context_find_source_by_funcs_user_data (ctx, &funcs, NULL) == NULL);
81 id = g_source_attach (source, ctx);
82 g_assert_cmpint (g_source_get_id (source), ==, id);
83 g_assert (g_main_context_find_source_by_id (ctx, id) == source);
85 g_source_set_priority (source, G_PRIORITY_HIGH);
86 g_assert_cmpint (g_source_get_priority (source), ==, G_PRIORITY_HIGH);
88 g_source_destroy (source);
89 g_assert (g_source_get_context (source) == ctx);
90 g_assert (g_main_context_find_source_by_id (ctx, id) == NULL);
92 g_main_context_unref (ctx);
94 if (g_test_undefined ())
96 g_test_expect_message (G_LOG_DOMAIN, G_LOG_LEVEL_CRITICAL,
97 "*assertion*source->context != NULL*failed*");
98 g_assert (g_source_get_context (source) == NULL);
99 g_test_assert_expected_messages ();
102 g_source_unref (source);
104 ctx = g_main_context_default ();
105 source = g_source_new (&funcs, sizeof (GSource));
106 g_source_set_funcs (source, &funcs);
107 g_source_set_callback (source, cb, data, NULL);
108 id = g_source_attach (source, ctx);
109 g_source_unref (source);
110 g_source_set_name_by_id (id, "e");
111 g_assert_cmpstr (g_source_get_name (source), ==, "e");
112 g_assert (g_source_get_context (source) == ctx);
113 g_assert (g_source_remove_by_funcs_user_data (&funcs, data));
115 source = g_source_new (&funcs, sizeof (GSource));
116 g_source_set_funcs (source, &funcs);
117 g_source_set_callback (source, cb, data, NULL);
118 id = g_source_attach (source, ctx);
119 g_source_unref (source);
120 g_assert (g_source_remove_by_user_data (data));
122 g_idle_add (cb, data);
123 g_assert (g_idle_remove_by_data (data));
127 test_mainloop_basic (void)
132 loop = g_main_loop_new (NULL, FALSE);
134 g_assert (!g_main_loop_is_running (loop));
136 g_main_loop_ref (loop);
138 ctx = g_main_loop_get_context (loop);
139 g_assert (ctx == g_main_context_default ());
141 g_main_loop_unref (loop);
143 g_assert_cmpint (g_main_depth (), ==, 0);
145 g_main_loop_unref (loop);
153 count_calls (gpointer data)
171 ctx = g_main_context_new ();
172 loop = g_main_loop_new (ctx, FALSE);
174 source = g_timeout_source_new (100);
175 g_source_set_callback (source, count_calls, &a, NULL);
176 g_source_attach (source, ctx);
177 g_source_unref (source);
179 source = g_timeout_source_new (250);
180 g_source_set_callback (source, count_calls, &b, NULL);
181 g_source_attach (source, ctx);
182 g_source_unref (source);
184 source = g_timeout_source_new (330);
185 g_source_set_callback (source, count_calls, &c, NULL);
186 g_source_attach (source, ctx);
187 g_source_unref (source);
189 source = g_timeout_source_new (1050);
190 g_source_set_callback (source, (GSourceFunc)g_main_loop_quit, loop, NULL);
191 g_source_attach (source, ctx);
192 g_source_unref (source);
194 g_main_loop_run (loop);
196 /* We may be delayed for an arbitrary amount of time - for example,
197 * it's possible for all timeouts to fire exactly once.
199 g_assert_cmpint (a, >, 0);
200 g_assert_cmpint (a, >=, b);
201 g_assert_cmpint (b, >=, c);
203 g_assert_cmpint (a, <=, 10);
204 g_assert_cmpint (b, <=, 4);
205 g_assert_cmpint (c, <=, 3);
207 g_main_loop_unref (loop);
208 g_main_context_unref (ctx);
212 test_priorities (void)
220 ctx = g_main_context_new ();
222 sourcea = g_idle_source_new ();
223 g_source_set_callback (sourcea, count_calls, &a, NULL);
224 g_source_set_priority (sourcea, 1);
225 g_source_attach (sourcea, ctx);
226 g_source_unref (sourcea);
228 sourceb = g_idle_source_new ();
229 g_source_set_callback (sourceb, count_calls, &b, NULL);
230 g_source_set_priority (sourceb, 0);
231 g_source_attach (sourceb, ctx);
232 g_source_unref (sourceb);
234 g_assert (g_main_context_pending (ctx));
235 g_assert (g_main_context_iteration (ctx, FALSE));
236 g_assert_cmpint (a, ==, 0);
237 g_assert_cmpint (b, ==, 1);
239 g_assert (g_main_context_iteration (ctx, FALSE));
240 g_assert_cmpint (a, ==, 0);
241 g_assert_cmpint (b, ==, 2);
243 g_source_destroy (sourceb);
245 g_assert (g_main_context_iteration (ctx, FALSE));
246 g_assert_cmpint (a, ==, 1);
247 g_assert_cmpint (b, ==, 2);
249 g_assert (g_main_context_pending (ctx));
250 g_source_destroy (sourcea);
251 g_assert (!g_main_context_pending (ctx));
253 g_main_context_unref (ctx);
257 quit_loop (gpointer data)
259 GMainLoop *loop = data;
261 g_main_loop_quit (loop);
263 return G_SOURCE_REMOVE;
272 g_assert (data == g_thread_self ());
280 call_func (gpointer data)
282 func (g_thread_self ());
284 return G_SOURCE_REMOVE;
289 static gboolean thread_ready;
292 thread_func (gpointer data)
294 GMainContext *ctx = data;
298 g_main_context_push_thread_default (ctx);
299 loop = g_main_loop_new (ctx, FALSE);
301 g_mutex_lock (&mutex);
303 g_cond_signal (&cond);
304 g_mutex_unlock (&mutex);
306 source = g_timeout_source_new (500);
307 g_source_set_callback (source, quit_loop, loop, NULL);
308 g_source_attach (source, ctx);
309 g_source_unref (source);
311 g_main_loop_run (loop);
313 g_main_context_pop_thread_default (ctx);
314 g_main_loop_unref (loop);
327 /* this one gets invoked directly */
328 g_main_context_invoke (NULL, func, g_thread_self ());
329 g_assert_cmpint (count, ==, 1);
331 /* invoking out of an idle works too */
332 g_idle_add (call_func, NULL);
333 g_main_context_iteration (g_main_context_default (), FALSE);
334 g_assert_cmpint (count, ==, 2);
336 /* test thread-default forcing the invocation to go
339 ctx = g_main_context_new ();
340 thread = g_thread_new ("worker", thread_func, ctx);
342 g_mutex_lock (&mutex);
343 while (!thread_ready)
344 g_cond_wait (&cond, &mutex);
345 g_mutex_unlock (&mutex);
347 g_main_context_invoke (ctx, func, thread);
349 g_thread_join (thread);
350 g_assert_cmpint (count, ==, 3);
352 g_main_context_unref (ctx);
356 run_inner_loop (gpointer user_data)
358 GMainContext *ctx = user_data;
364 inner = g_main_loop_new (ctx, FALSE);
365 timeout = g_timeout_source_new (100);
366 g_source_set_callback (timeout, quit_loop, inner, NULL);
367 g_source_attach (timeout, ctx);
368 g_source_unref (timeout);
370 g_main_loop_run (inner);
371 g_main_loop_unref (inner);
373 return G_SOURCE_CONTINUE;
377 test_child_sources (void)
381 GSource *parent, *child_b, *child_c, *end;
383 ctx = g_main_context_new ();
384 loop = g_main_loop_new (ctx, FALSE);
388 parent = g_timeout_source_new (2000);
389 g_source_set_callback (parent, run_inner_loop, ctx, NULL);
390 g_source_set_priority (parent, G_PRIORITY_LOW);
391 g_source_attach (parent, ctx);
393 child_b = g_timeout_source_new (250);
394 g_source_set_callback (child_b, count_calls, &b, NULL);
395 g_source_add_child_source (parent, child_b);
397 child_c = g_timeout_source_new (330);
398 g_source_set_callback (child_c, count_calls, &c, NULL);
399 g_source_set_priority (child_c, G_PRIORITY_HIGH);
400 g_source_add_child_source (parent, child_c);
402 /* Child sources always have the priority of the parent */
403 g_assert_cmpint (g_source_get_priority (parent), ==, G_PRIORITY_LOW);
404 g_assert_cmpint (g_source_get_priority (child_b), ==, G_PRIORITY_LOW);
405 g_assert_cmpint (g_source_get_priority (child_c), ==, G_PRIORITY_LOW);
406 g_source_set_priority (parent, G_PRIORITY_DEFAULT);
407 g_assert_cmpint (g_source_get_priority (parent), ==, G_PRIORITY_DEFAULT);
408 g_assert_cmpint (g_source_get_priority (child_b), ==, G_PRIORITY_DEFAULT);
409 g_assert_cmpint (g_source_get_priority (child_c), ==, G_PRIORITY_DEFAULT);
411 end = g_timeout_source_new (1050);
412 g_source_set_callback (end, quit_loop, loop, NULL);
413 g_source_attach (end, ctx);
414 g_source_unref (end);
416 g_main_loop_run (loop);
418 /* The parent source's own timeout will never trigger, so "a" will
419 * only get incremented when "b" or "c" does. And when timeouts get
420 * blocked, they still wait the full interval next time rather than
421 * "catching up". So the timing is:
423 * 250 - b++ -> a++, run_inner_loop
424 * 330 - (c is blocked)
425 * 350 - inner_loop ends
426 * 350 - c++ belatedly -> a++, run_inner_loop
427 * 450 - inner loop ends
428 * 500 - b++ -> a++, run_inner_loop
429 * 600 - inner_loop ends
430 * 680 - c++ -> a++, run_inner_loop
431 * 750 - (b is blocked)
432 * 780 - inner loop ends
433 * 780 - b++ belatedly -> a++, run_inner_loop
434 * 880 - inner loop ends
435 * 1010 - c++ -> a++, run_inner_loop
436 * 1030 - (b is blocked)
437 * 1050 - end runs, quits outer loop, which has no effect yet
438 * 1110 - inner loop ends, a returns, outer loop exits
441 g_assert_cmpint (a, ==, 6);
442 g_assert_cmpint (b, ==, 3);
443 g_assert_cmpint (c, ==, 3);
445 g_source_destroy (parent);
446 g_source_unref (parent);
447 g_source_unref (child_b);
448 g_source_unref (child_c);
450 g_main_loop_unref (loop);
451 g_main_context_unref (ctx);
455 test_recursive_child_sources (void)
459 GSource *parent, *child_b, *child_c, *end;
461 ctx = g_main_context_new ();
462 loop = g_main_loop_new (ctx, FALSE);
466 parent = g_timeout_source_new (500);
467 g_source_set_callback (parent, count_calls, &a, NULL);
469 child_b = g_timeout_source_new (220);
470 g_source_set_callback (child_b, count_calls, &b, NULL);
471 g_source_add_child_source (parent, child_b);
473 child_c = g_timeout_source_new (430);
474 g_source_set_callback (child_c, count_calls, &c, NULL);
475 g_source_add_child_source (child_b, child_c);
477 g_source_attach (parent, ctx);
479 end = g_timeout_source_new (2010);
480 g_source_set_callback (end, (GSourceFunc)g_main_loop_quit, loop, NULL);
481 g_source_attach (end, ctx);
482 g_source_unref (end);
484 g_main_loop_run (loop);
486 /* Sequence of events:
487 * 220 b (b = 440, a = 720)
488 * 430 c (c = 860, b = 650, a = 930)
489 * 650 b (b = 870, a = 1150)
490 * 860 c (c = 1290, b = 1080, a = 1360)
491 * 1080 b (b = 1300, a = 1580)
492 * 1290 c (c = 1720, b = 1510, a = 1790)
493 * 1510 b (b = 1730, a = 2010)
494 * 1720 c (c = 2150, b = 1940, a = 2220)
495 * 1940 b (b = 2160, a = 2440)
498 g_assert_cmpint (a, ==, 9);
499 g_assert_cmpint (b, ==, 9);
500 g_assert_cmpint (c, ==, 4);
502 g_source_destroy (parent);
503 g_source_unref (parent);
504 g_source_unref (child_b);
505 g_source_unref (child_c);
507 g_main_loop_unref (loop);
508 g_main_context_unref (ctx);
512 GSource *parent, *old_child, *new_child;
517 swap_sources (gpointer user_data)
519 SwappingTestData *data = user_data;
523 g_source_remove_child_source (data->parent, data->old_child);
524 g_clear_pointer (&data->old_child, g_source_unref);
527 if (!data->new_child)
529 data->new_child = g_timeout_source_new (0);
530 g_source_set_callback (data->new_child, quit_loop, data->loop, NULL);
531 g_source_add_child_source (data->parent, data->new_child);
534 return G_SOURCE_CONTINUE;
538 assert_not_reached_callback (gpointer user_data)
540 g_assert_not_reached ();
542 return G_SOURCE_REMOVE;
546 test_swapping_child_sources (void)
550 SwappingTestData data;
552 ctx = g_main_context_new ();
553 loop = g_main_loop_new (ctx, FALSE);
555 data.parent = g_timeout_source_new (50);
557 g_source_set_callback (data.parent, swap_sources, &data, NULL);
558 g_source_attach (data.parent, ctx);
560 data.old_child = g_timeout_source_new (100);
561 g_source_add_child_source (data.parent, data.old_child);
562 g_source_set_callback (data.old_child, assert_not_reached_callback, NULL, NULL);
564 data.new_child = NULL;
565 g_main_loop_run (loop);
567 g_source_destroy (data.parent);
568 g_source_unref (data.parent);
569 g_source_unref (data.new_child);
571 g_main_loop_unref (loop);
572 g_main_context_unref (ctx);
576 add_source_callback (gpointer user_data)
578 GMainLoop *loop = user_data;
579 GSource *self = g_main_current_source (), *child;
582 /* It doesn't matter whether this is a valid fd or not; it never
583 * actually gets polled; the test is just checking that
584 * g_source_add_child_source() doesn't crash.
586 io = g_io_channel_unix_new (0);
587 child = g_io_create_watch (io, G_IO_IN);
588 g_source_add_child_source (self, child);
589 g_source_unref (child);
590 g_io_channel_unref (io);
592 g_main_loop_quit (loop);
597 test_blocked_child_sources (void)
603 g_test_bug ("701283");
605 ctx = g_main_context_new ();
606 loop = g_main_loop_new (ctx, FALSE);
608 source = g_idle_source_new ();
609 g_source_set_callback (source, add_source_callback, loop, NULL);
610 g_source_attach (source, ctx);
612 g_main_loop_run (loop);
614 g_source_destroy (source);
615 g_source_unref (source);
617 g_main_loop_unref (loop);
618 g_main_context_unref (ctx);
625 GSource *timeout1, *timeout2;
630 timeout1_callback (gpointer user_data)
632 TimeTestData *data = user_data;
634 gint64 mtime1, mtime2, time2;
636 source = g_main_current_source ();
637 g_assert (source == data->timeout1);
639 if (data->time1 == -1)
641 /* First iteration */
642 g_assert (!g_source_is_destroyed (data->timeout2));
644 mtime1 = g_get_monotonic_time ();
645 data->time1 = g_source_get_time (source);
647 /* g_source_get_time() does not change during a single callback */
649 mtime2 = g_get_monotonic_time ();
650 time2 = g_source_get_time (source);
652 g_assert_cmpint (mtime1, <, mtime2);
653 g_assert_cmpint (data->time1, ==, time2);
657 /* Second iteration */
658 g_assert (g_source_is_destroyed (data->timeout2));
660 /* g_source_get_time() MAY change between iterations; in this
661 * case we know for sure that it did because of the g_usleep()
664 time2 = g_source_get_time (source);
665 g_assert_cmpint (data->time1, <, time2);
667 g_main_loop_quit (data->loop);
674 timeout2_callback (gpointer user_data)
676 TimeTestData *data = user_data;
680 source = g_main_current_source ();
681 g_assert (source == data->timeout2);
683 g_assert (!g_source_is_destroyed (data->timeout1));
685 /* g_source_get_time() does not change between different sources in
686 * a single iteration of the mainloop.
688 time2 = g_source_get_time (source);
689 g_assert_cmpint (data->time1, ==, time2);
691 /* The source should still have a valid time even after being
692 * destroyed, since it's currently running.
694 g_source_destroy (source);
695 time3 = g_source_get_time (source);
696 g_assert_cmpint (time2, ==, time3);
702 test_source_time (void)
706 data.ctx = g_main_context_new ();
707 data.loop = g_main_loop_new (data.ctx, FALSE);
709 data.timeout1 = g_timeout_source_new (0);
710 g_source_set_callback (data.timeout1, timeout1_callback, &data, NULL);
711 g_source_attach (data.timeout1, data.ctx);
713 data.timeout2 = g_timeout_source_new (0);
714 g_source_set_callback (data.timeout2, timeout2_callback, &data, NULL);
715 g_source_attach (data.timeout2, data.ctx);
719 g_main_loop_run (data.loop);
721 g_assert (!g_source_is_destroyed (data.timeout1));
722 g_assert (g_source_is_destroyed (data.timeout2));
724 g_source_destroy (data.timeout1);
725 g_source_unref (data.timeout1);
726 g_source_unref (data.timeout2);
728 g_main_loop_unref (data.loop);
729 g_main_context_unref (data.ctx);
733 guint outstanding_ops;
738 on_source_fired_cb (gpointer user_data)
740 TestOverflowData *data = user_data;
741 GSource *current_source;
742 GMainContext *current_context;
745 data->outstanding_ops--;
747 current_source = g_main_current_source ();
748 current_context = g_source_get_context (current_source);
749 source_id = g_source_get_id (current_source);
750 g_assert (g_main_context_find_source_by_id (current_context, source_id) != NULL);
751 g_source_destroy (current_source);
752 g_assert (g_main_context_find_source_by_id (current_context, source_id) == NULL);
754 if (data->outstanding_ops == 0)
755 g_main_loop_quit (data->loop);
760 add_idle_source (GMainContext *ctx,
761 TestOverflowData *data)
765 source = g_idle_source_new ();
766 g_source_set_callback (source, on_source_fired_cb, data, NULL);
767 g_source_attach (source, ctx);
768 g_source_unref (source);
769 data->outstanding_ops++;
775 test_mainloop_overflow (void)
780 TestOverflowData data;
783 g_test_bug ("687098");
785 memset (&data, 0, sizeof (data));
787 ctx = GLIB_PRIVATE_CALL (g_main_context_new_with_next_id) (G_MAXUINT-1);
789 loop = g_main_loop_new (ctx, TRUE);
790 data.outstanding_ops = 0;
793 source = add_idle_source (ctx, &data);
794 g_assert_cmpint (source->source_id, ==, G_MAXUINT-1);
796 source = add_idle_source (ctx, &data);
797 g_assert_cmpint (source->source_id, ==, G_MAXUINT);
799 source = add_idle_source (ctx, &data);
800 g_assert_cmpint (source->source_id, !=, 0);
802 /* Now, a lot more sources */
803 for (i = 0; i < 50; i++)
805 source = add_idle_source (ctx, &data);
806 g_assert_cmpint (source->source_id, !=, 0);
809 g_main_loop_run (loop);
810 g_assert_cmpint (data.outstanding_ops, ==, 0);
812 g_main_loop_unref (loop);
813 g_main_context_unref (ctx);
816 static volatile gint ready_time_dispatched;
819 ready_time_dispatch (GSource *source,
820 GSourceFunc callback,
823 g_atomic_int_set (&ready_time_dispatched, TRUE);
825 g_source_set_ready_time (source, -1);
831 run_context (gpointer user_data)
833 g_main_loop_run (user_data);
839 test_ready_time (void)
843 GSourceFuncs source_funcs = {
844 NULL, NULL, ready_time_dispatch
848 source = g_source_new (&source_funcs, sizeof (GSource));
849 g_source_attach (source, NULL);
850 g_source_unref (source);
852 /* Unfortunately we can't do too many things with respect to timing
853 * without getting into trouble on slow systems or heavily loaded
856 * We can test that the basics are working, though.
859 /* A source with no ready time set should not fire */
860 g_assert_cmpint (g_source_get_ready_time (source), ==, -1);
861 while (g_main_context_iteration (NULL, FALSE));
862 g_assert (!ready_time_dispatched);
864 /* The ready time should not have been changed */
865 g_assert_cmpint (g_source_get_ready_time (source), ==, -1);
867 /* Of course this shouldn't change anything either */
868 g_source_set_ready_time (source, -1);
869 g_assert_cmpint (g_source_get_ready_time (source), ==, -1);
871 /* A source with a ready time set to tomorrow should not fire on any
872 * builder, no matter how badly loaded...
874 g_source_set_ready_time (source, g_get_monotonic_time () + G_TIME_SPAN_DAY);
875 while (g_main_context_iteration (NULL, FALSE));
876 g_assert (!ready_time_dispatched);
877 /* Make sure it didn't get reset */
878 g_assert_cmpint (g_source_get_ready_time (source), !=, -1);
880 /* Ready time of -1 -> don't fire */
881 g_source_set_ready_time (source, -1);
882 while (g_main_context_iteration (NULL, FALSE));
883 g_assert (!ready_time_dispatched);
884 /* Not reset, but should still be -1 from above */
885 g_assert_cmpint (g_source_get_ready_time (source), ==, -1);
887 /* A ready time of the current time should fire immediately */
888 g_source_set_ready_time (source, g_get_monotonic_time ());
889 while (g_main_context_iteration (NULL, FALSE));
890 g_assert (ready_time_dispatched);
891 ready_time_dispatched = FALSE;
892 /* Should have gotten reset by the handler function */
893 g_assert_cmpint (g_source_get_ready_time (source), ==, -1);
895 /* As well as one in the recent past... */
896 g_source_set_ready_time (source, g_get_monotonic_time () - G_TIME_SPAN_SECOND);
897 while (g_main_context_iteration (NULL, FALSE));
898 g_assert (ready_time_dispatched);
899 ready_time_dispatched = FALSE;
900 g_assert_cmpint (g_source_get_ready_time (source), ==, -1);
902 /* Zero is the 'official' way to get a source to fire immediately */
903 g_source_set_ready_time (source, 0);
904 while (g_main_context_iteration (NULL, FALSE));
905 g_assert (ready_time_dispatched);
906 ready_time_dispatched = FALSE;
907 g_assert_cmpint (g_source_get_ready_time (source), ==, -1);
909 /* Now do some tests of cross-thread wakeups.
911 * Make sure it wakes up right away from the start.
913 g_source_set_ready_time (source, 0);
914 loop = g_main_loop_new (NULL, FALSE);
915 thread = g_thread_new ("context thread", run_context, loop);
916 while (!g_atomic_int_get (&ready_time_dispatched));
918 /* Now let's see if it can wake up from sleeping. */
919 g_usleep (G_TIME_SPAN_SECOND / 2);
920 g_atomic_int_set (&ready_time_dispatched, FALSE);
921 g_source_set_ready_time (source, 0);
922 while (!g_atomic_int_get (&ready_time_dispatched));
924 /* kill the thread */
925 g_main_loop_quit (loop);
926 g_thread_join (thread);
927 g_main_loop_unref (loop);
929 g_source_destroy (source);
938 ctx = g_main_context_new ();
940 /* run a random large enough number of times because
941 * main contexts tend to wake up a few times after creation.
943 for (i = 0; i < 100; i++)
945 /* This is the invariant we care about:
946 * g_main_context_wakeup(ctx,) ensures that the next call to
947 * g_main_context_iteration (ctx, TRUE) returns and doesn't
949 * This is important in threaded apps where we might not know
950 * if the thread calls g_main_context_wakeup() before or after
951 * we enter g_main_context_iteration().
953 g_main_context_wakeup (ctx);
954 g_main_context_iteration (ctx, TRUE);
957 g_main_context_unref (ctx);
962 #include <glib-unix.h>
965 static gchar zeros[1024];
968 fill_a_pipe (gint fd)
974 pfd.events = G_IO_OUT;
975 while (g_poll (&pfd, 1, 0) == 1)
976 /* we should never see -1 here */
977 written += write (fd, zeros, sizeof zeros);
983 write_bytes (gint fd,
984 GIOCondition condition,
987 gssize *to_write = user_data;
993 /* Detect if we run before we should */
994 g_assert (*to_write >= 0);
996 limit = MIN (*to_write, sizeof zeros);
997 *to_write -= write (fd, zeros, limit);
1003 read_bytes (gint fd,
1004 GIOCondition condition,
1007 static gchar buffer[1024];
1008 gssize *to_read = user_data;
1010 *to_read -= read (fd, buffer, sizeof buffer);
1012 /* The loop will exit when there is nothing else to read, then we will
1013 * use g_source_remove() to destroy this source.
1021 gssize to_write = -1;
1032 to_read = fill_a_pipe (fds[1]);
1033 /* write at higher priority to keep the pipe full... */
1034 a = g_unix_fd_add_full (G_PRIORITY_HIGH, fds[1], G_IO_OUT, write_bytes, &to_write, NULL);
1035 source_a = g_source_ref (g_main_context_find_source_by_id (NULL, a));
1036 /* make sure no 'writes' get dispatched yet */
1037 while (g_main_context_iteration (NULL, FALSE));
1039 to_read += 128 * 1024 * 1024;
1040 to_write = 128 * 1024 * 1024;
1041 b = g_unix_fd_add (fds[0], G_IO_IN, read_bytes, &to_read);
1042 source_b = g_source_ref (g_main_context_find_source_by_id (NULL, b));
1044 /* Assuming the kernel isn't internally 'laggy' then there will always
1045 * be either data to read or room in which to write. That will keep
1046 * the loop running until all data has been read and written.
1050 gssize to_write_was = to_write;
1051 gssize to_read_was = to_read;
1053 if (!g_main_context_iteration (NULL, FALSE))
1056 /* Since the sources are at different priority, only one of them
1057 * should possibly have run.
1059 g_assert (to_write == to_write_was || to_read == to_read_was);
1062 g_assert (to_write == 0);
1063 g_assert (to_read == 0);
1065 /* 'a' is already removed by itself */
1066 g_assert (g_source_is_destroyed (source_a));
1067 g_source_unref (source_a);
1068 g_source_remove (b);
1069 g_assert (g_source_is_destroyed (source_b));
1070 g_source_unref (source_b);
1076 assert_main_context_state (gint n_to_poll,
1079 GMainContext *context;
1080 gboolean consumed[10] = { };
1081 GPollFD poll_fds[10];
1089 context = g_main_context_default ();
1091 immediate = g_main_context_prepare (context, &max_priority);
1092 g_assert (!immediate);
1093 n = g_main_context_query (context, max_priority, &timeout, poll_fds, 10);
1094 g_assert_cmpint (n, ==, n_to_poll + 1); /* one will be the gwakeup */
1096 va_start (ap, n_to_poll);
1097 for (i = 0; i < n_to_poll; i++)
1099 gint expected_fd = va_arg (ap, gint);
1100 GIOCondition expected_events = va_arg (ap, GIOCondition);
1101 GIOCondition report_events = va_arg (ap, GIOCondition);
1103 for (j = 0; j < n; j++)
1104 if (!consumed[j] && poll_fds[j].fd == expected_fd && poll_fds[j].events == expected_events)
1106 poll_fds[j].revents = report_events;
1112 g_error ("Unable to find fd %d (index %d) with events 0x%x\n", expected_fd, i, (guint) expected_events);
1116 /* find the gwakeup, flag as non-ready */
1117 for (i = 0; i < n; i++)
1119 poll_fds[i].revents = 0;
1121 if (g_main_context_check (context, max_priority, poll_fds, n))
1122 g_main_context_dispatch (context);
1127 GIOCondition condition,
1130 gboolean *flag = user_data;
1138 test_unix_fd_source (void)
1140 GSource *out_source;
1147 assert_main_context_state (0);
1152 source = g_unix_fd_source_new (fds[1], G_IO_OUT);
1153 g_source_attach (source, NULL);
1155 /* Check that a source with no callback gets successfully detached
1156 * with a warning printed.
1158 g_test_expect_message ("GLib", G_LOG_LEVEL_WARNING, "*GUnixFDSource dispatched without callback*");
1159 while (g_main_context_iteration (NULL, FALSE));
1160 g_test_assert_expected_messages ();
1161 g_assert (g_source_is_destroyed (source));
1162 g_source_unref (source);
1165 out_source = g_unix_fd_source_new (fds[1], G_IO_OUT);
1166 g_source_set_callback (out_source, (GSourceFunc) flag_bool, &out, NULL);
1167 g_source_attach (out_source, NULL);
1168 assert_main_context_state (1,
1169 fds[1], G_IO_OUT, 0);
1170 g_assert (!in && !out);
1172 in_source = g_unix_fd_source_new (fds[0], G_IO_IN);
1173 g_source_set_callback (in_source, (GSourceFunc) flag_bool, &in, NULL);
1174 g_source_set_priority (in_source, G_PRIORITY_DEFAULT_IDLE);
1175 g_source_attach (in_source, NULL);
1176 assert_main_context_state (2,
1177 fds[0], G_IO_IN, G_IO_IN,
1178 fds[1], G_IO_OUT, G_IO_OUT);
1179 /* out is higher priority so only it should fire */
1180 g_assert (!in && out);
1182 /* raise the priority of the in source to higher than out*/
1184 g_source_set_priority (in_source, G_PRIORITY_HIGH);
1185 assert_main_context_state (2,
1186 fds[0], G_IO_IN, G_IO_IN,
1187 fds[1], G_IO_OUT, G_IO_OUT);
1188 g_assert (in && !out);
1190 /* now, let them be equal */
1192 g_source_set_priority (in_source, G_PRIORITY_DEFAULT);
1193 assert_main_context_state (2,
1194 fds[0], G_IO_IN, G_IO_IN,
1195 fds[1], G_IO_OUT, G_IO_OUT);
1196 g_assert (in && out);
1198 g_source_destroy (out_source);
1199 g_source_destroy (in_source);
1211 return_true (GSource *source, GSourceFunc callback, gpointer user_data)
1213 FlagSource *flag_source = (FlagSource *) source;
1215 flag_source->flagged = TRUE;
1220 #define assert_flagged(s) g_assert (((FlagSource *) (s))->flagged);
1221 #define assert_not_flagged(s) g_assert (!((FlagSource *) (s))->flagged);
1222 #define clear_flag(s) ((FlagSource *) (s))->flagged = 0
1225 test_source_unix_fd_api (void)
1227 GSourceFuncs no_funcs = {
1228 NULL, NULL, return_true
1232 gpointer tag1, tag2;
1239 source_a = g_source_new (&no_funcs, sizeof (FlagSource));
1240 source_b = g_source_new (&no_funcs, sizeof (FlagSource));
1242 /* attach a source with more than one fd */
1243 g_source_add_unix_fd (source_a, fds_a[0], G_IO_IN);
1244 g_source_add_unix_fd (source_a, fds_a[1], G_IO_OUT);
1245 g_source_attach (source_a, NULL);
1246 assert_main_context_state (2,
1247 fds_a[0], G_IO_IN, 0,
1248 fds_a[1], G_IO_OUT, 0);
1249 assert_not_flagged (source_a);
1251 /* attach a higher priority source with no fds */
1252 g_source_set_priority (source_b, G_PRIORITY_HIGH);
1253 g_source_attach (source_b, NULL);
1254 assert_main_context_state (2,
1255 fds_a[0], G_IO_IN, G_IO_IN,
1256 fds_a[1], G_IO_OUT, 0);
1257 assert_flagged (source_a);
1258 assert_not_flagged (source_b);
1259 clear_flag (source_a);
1261 /* add some fds to the second source, while attached */
1262 tag1 = g_source_add_unix_fd (source_b, fds_b[0], G_IO_IN);
1263 tag2 = g_source_add_unix_fd (source_b, fds_b[1], G_IO_OUT);
1264 assert_main_context_state (4,
1265 fds_a[0], G_IO_IN, 0,
1266 fds_a[1], G_IO_OUT, G_IO_OUT,
1267 fds_b[0], G_IO_IN, 0,
1268 fds_b[1], G_IO_OUT, G_IO_OUT);
1269 /* only 'b' (higher priority) should have dispatched */
1270 assert_not_flagged (source_a);
1271 assert_flagged (source_b);
1272 clear_flag (source_b);
1274 /* change our events on b to the same as they were before */
1275 g_source_modify_unix_fd (source_b, tag1, G_IO_IN);
1276 g_source_modify_unix_fd (source_b, tag2, G_IO_OUT);
1277 assert_main_context_state (4,
1278 fds_a[0], G_IO_IN, 0,
1279 fds_a[1], G_IO_OUT, G_IO_OUT,
1280 fds_b[0], G_IO_IN, 0,
1281 fds_b[1], G_IO_OUT, G_IO_OUT);
1282 assert_not_flagged (source_a);
1283 assert_flagged (source_b);
1284 clear_flag (source_b);
1286 /* now reverse them */
1287 g_source_modify_unix_fd (source_b, tag1, G_IO_OUT);
1288 g_source_modify_unix_fd (source_b, tag2, G_IO_IN);
1289 assert_main_context_state (4,
1290 fds_a[0], G_IO_IN, 0,
1291 fds_a[1], G_IO_OUT, G_IO_OUT,
1292 fds_b[0], G_IO_OUT, 0,
1293 fds_b[1], G_IO_IN, 0);
1294 /* 'b' had no events, so 'a' can go this time */
1295 assert_flagged (source_a);
1296 assert_not_flagged (source_b);
1297 clear_flag (source_a);
1299 /* remove one of the fds from 'b' */
1300 g_source_remove_unix_fd (source_b, tag1);
1301 assert_main_context_state (3,
1302 fds_a[0], G_IO_IN, 0,
1303 fds_a[1], G_IO_OUT, 0,
1304 fds_b[1], G_IO_IN, 0);
1305 assert_not_flagged (source_a);
1306 assert_not_flagged (source_b);
1308 /* remove the other */
1309 g_source_remove_unix_fd (source_b, tag2);
1310 assert_main_context_state (2,
1311 fds_a[0], G_IO_IN, 0,
1312 fds_a[1], G_IO_OUT, 0);
1313 assert_not_flagged (source_a);
1314 assert_not_flagged (source_b);
1316 /* destroy the sources */
1317 g_source_destroy (source_a);
1318 g_source_destroy (source_b);
1319 assert_main_context_state (0);
1321 g_source_unref (source_a);
1322 g_source_unref (source_b);
1332 main (int argc, char *argv[])
1334 g_test_init (&argc, &argv, NULL);
1335 g_test_bug_base ("http://bugzilla.gnome.org/");
1337 g_test_add_func ("/maincontext/basic", test_maincontext_basic);
1338 g_test_add_func ("/mainloop/basic", test_mainloop_basic);
1339 g_test_add_func ("/mainloop/timeouts", test_timeouts);
1340 g_test_add_func ("/mainloop/priorities", test_priorities);
1341 g_test_add_func ("/mainloop/invoke", test_invoke);
1342 g_test_add_func ("/mainloop/child_sources", test_child_sources);
1343 g_test_add_func ("/mainloop/recursive_child_sources", test_recursive_child_sources);
1344 g_test_add_func ("/mainloop/swapping_child_sources", test_swapping_child_sources);
1345 g_test_add_func ("/mainloop/blocked_child_sources", test_blocked_child_sources);
1346 g_test_add_func ("/mainloop/source_time", test_source_time);
1347 g_test_add_func ("/mainloop/overflow", test_mainloop_overflow);
1348 g_test_add_func ("/mainloop/ready-time", test_ready_time);
1349 g_test_add_func ("/mainloop/wakeup", test_wakeup);
1351 g_test_add_func ("/mainloop/unix-fd", test_unix_fd);
1352 g_test_add_func ("/mainloop/unix-fd-source", test_unix_fd_source);
1353 g_test_add_func ("/mainloop/source-unix-fd-api", test_source_unix_fd_api);
1356 return g_test_run ();