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bin: Fix race conditions in tests
The latency messages are non-deterministic and can arrive before/after async-done or during state-changes as they are posted by e.g. sinks from their streaming thread but bins are finishing asynchronous state changes from a secondary helper thread. To solve this, expect latency messages at any time and assert that we receive one at some point during the test. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3647>
This commit is contained in:
Sebastian Dröge
Tim-Philipp Müller
parent
78d1f5d026
commit
ccd582c332
1 changed files with 90 additions and 38 deletions
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@ -27,50 +27,95 @@
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#include <gst/base/gstbasesrc.h>
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static void
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pop_async_done (GstBus * bus)
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pop_async_done (GstBus * bus, gboolean * had_latency)
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{
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GstMessage *message;
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GstMessageType types = GST_MESSAGE_ASYNC_DONE;
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if (!*had_latency)
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types |= GST_MESSAGE_LATENCY;
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GST_DEBUG ("popping async-done message");
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message = gst_bus_poll (bus, GST_MESSAGE_ASYNC_DONE, -1);
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fail_unless (message && GST_MESSAGE_TYPE (message)
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== GST_MESSAGE_ASYNC_DONE, "did not get GST_MESSAGE_ASYNC_DONE");
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do {
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message = gst_bus_poll (bus, types, -1);
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gst_message_unref (message);
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GST_DEBUG ("popped message");
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fail_unless (message);
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GST_DEBUG ("popped message %s",
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gst_message_type_get_name (GST_MESSAGE_TYPE (message)));
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if (GST_MESSAGE_TYPE (message) == GST_MESSAGE_LATENCY) {
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fail_unless (*had_latency == FALSE);
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*had_latency = TRUE;
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gst_clear_message (&message);
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types &= ~GST_MESSAGE_LATENCY;
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continue;
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}
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fail_unless (GST_MESSAGE_TYPE (message)
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== GST_MESSAGE_ASYNC_DONE, "did not get GST_MESSAGE_ASYNC_DONE");
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gst_clear_message (&message);
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break;
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} while (TRUE);
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}
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static void
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pop_latency (GstBus * bus)
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pop_latency (GstBus * bus, gboolean * had_latency)
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{
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GstMessage *message;
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GST_DEBUG ("popping async-done message");
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if (*had_latency)
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return;
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GST_DEBUG ("popping latency message");
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message = gst_bus_poll (bus, GST_MESSAGE_LATENCY, -1);
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fail_unless (message && GST_MESSAGE_TYPE (message)
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fail_unless (message);
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fail_unless (GST_MESSAGE_TYPE (message)
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== GST_MESSAGE_LATENCY, "did not get GST_MESSAGE_LATENCY");
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gst_message_unref (message);
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GST_DEBUG ("popped message");
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GST_DEBUG ("popped message %s",
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gst_message_type_get_name (GST_MESSAGE_TYPE (message)));
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gst_clear_message (&message);
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*had_latency = TRUE;
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}
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static void
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pop_state_changed (GstBus * bus, int count)
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pop_state_changed (GstBus * bus, int count, gboolean * had_latency)
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{
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GstMessage *message;
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GstMessageType types = GST_MESSAGE_STATE_CHANGED;
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int i;
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if (!*had_latency)
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types |= GST_MESSAGE_LATENCY;
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GST_DEBUG ("popping %d messages", count);
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for (i = 0; i < count; ++i) {
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message = gst_bus_poll (bus, GST_MESSAGE_STATE_CHANGED, -1);
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do {
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message = gst_bus_poll (bus, types, -1);
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fail_unless (message && GST_MESSAGE_TYPE (message)
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== GST_MESSAGE_STATE_CHANGED, "did not get GST_MESSAGE_STATE_CHANGED");
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fail_unless (message);
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GST_DEBUG ("popped message %s",
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gst_message_type_get_name (GST_MESSAGE_TYPE (message)));
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gst_message_unref (message);
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if (GST_MESSAGE_TYPE (message) == GST_MESSAGE_LATENCY) {
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fail_unless (*had_latency == FALSE);
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*had_latency = TRUE;
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gst_clear_message (&message);
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types &= ~GST_MESSAGE_LATENCY;
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continue;
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}
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fail_unless (GST_MESSAGE_TYPE (message)
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== GST_MESSAGE_STATE_CHANGED,
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"did not get GST_MESSAGE_STATE_CHANGED");
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gst_message_unref (message);
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break;
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} while (TRUE);
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}
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GST_DEBUG ("popped %d messages", count);
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}
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@ -538,6 +583,7 @@ GST_START_TEST (test_message_state_changed_children)
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GstBus *bus;
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GstStateChangeReturn ret;
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GstState current, pending;
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gboolean had_latency = FALSE;
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pipeline = GST_PIPELINE (gst_pipeline_new (NULL));
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fail_unless (pipeline != NULL, "Could not create pipeline");
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@ -576,7 +622,7 @@ GST_START_TEST (test_message_state_changed_children)
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ASSERT_OBJECT_REFCOUNT (sink, "sink", 2);
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ASSERT_OBJECT_REFCOUNT (pipeline, "pipeline", 2);
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pop_state_changed (bus, 3);
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pop_state_changed (bus, 3, &had_latency);
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fail_if (gst_bus_have_pending (bus), "unexpected pending messages");
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ASSERT_OBJECT_REFCOUNT (bus, "bus", 2);
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@ -619,9 +665,9 @@ GST_START_TEST (test_message_state_changed_children)
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* its state_change message */
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ASSERT_OBJECT_REFCOUNT_BETWEEN (pipeline, "pipeline", 3, 4);
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pop_state_changed (bus, 3);
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pop_async_done (bus);
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pop_latency (bus);
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pop_state_changed (bus, 3, &had_latency);
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pop_async_done (bus, &had_latency);
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pop_latency (bus, &had_latency);
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fail_if ((gst_bus_pop (bus)) != NULL);
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ASSERT_OBJECT_REFCOUNT_BETWEEN (bus, "bus", 2, 3);
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@ -648,7 +694,7 @@ GST_START_TEST (test_message_state_changed_children)
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ASSERT_OBJECT_REFCOUNT_BETWEEN (sink, "sink", 2, 4);
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ASSERT_OBJECT_REFCOUNT (pipeline, "pipeline", 3);
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pop_state_changed (bus, 3);
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pop_state_changed (bus, 3, &had_latency);
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fail_if ((gst_bus_pop (bus)) != NULL);
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ASSERT_OBJECT_REFCOUNT (bus, "bus", 2);
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@ -669,7 +715,7 @@ GST_START_TEST (test_message_state_changed_children)
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ASSERT_OBJECT_REFCOUNT_BETWEEN (sink, "sink", 3, 4);
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ASSERT_OBJECT_REFCOUNT (pipeline, "pipeline", 3);
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pop_state_changed (bus, 6);
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pop_state_changed (bus, 6, &had_latency);
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fail_if ((gst_bus_pop (bus)) != NULL);
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ASSERT_OBJECT_REFCOUNT (src, "src", 1);
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@ -696,6 +742,7 @@ GST_START_TEST (test_watch_for_state_change)
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GstElement *src, *sink, *bin;
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GstBus *bus;
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GstStateChangeReturn ret;
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gboolean had_latency = FALSE;
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bin = gst_element_factory_make ("bin", NULL);
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fail_unless (bin != NULL, "Could not create bin");
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@ -722,9 +769,9 @@ GST_START_TEST (test_watch_for_state_change)
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GST_CLOCK_TIME_NONE);
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fail_unless (ret == GST_STATE_CHANGE_SUCCESS);
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pop_state_changed (bus, 6);
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pop_async_done (bus);
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pop_latency (bus);
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pop_state_changed (bus, 6, &had_latency);
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pop_async_done (bus, &had_latency);
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pop_latency (bus, &had_latency);
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fail_unless (gst_bus_have_pending (bus) == FALSE,
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"Unexpected messages on bus");
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@ -732,16 +779,17 @@ GST_START_TEST (test_watch_for_state_change)
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ret = gst_element_set_state (GST_ELEMENT (bin), GST_STATE_PLAYING);
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fail_unless (ret == GST_STATE_CHANGE_SUCCESS);
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pop_state_changed (bus, 3);
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pop_state_changed (bus, 3, &had_latency);
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had_latency = FALSE;
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/* this one might return either SUCCESS or ASYNC, likely SUCCESS */
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ret = gst_element_set_state (GST_ELEMENT (bin), GST_STATE_PAUSED);
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gst_element_get_state (GST_ELEMENT (bin), NULL, NULL, GST_CLOCK_TIME_NONE);
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pop_state_changed (bus, 3);
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pop_state_changed (bus, 3, &had_latency);
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if (ret == GST_STATE_CHANGE_ASYNC) {
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pop_async_done (bus);
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pop_latency (bus);
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pop_async_done (bus, &had_latency);
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pop_latency (bus, &had_latency);
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}
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fail_unless (gst_bus_have_pending (bus) == FALSE,
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@ -898,6 +946,7 @@ GST_START_TEST (test_children_state_change_order_flagged_sink)
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GstStateChangeReturn ret;
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GstState current, pending;
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GstBus *bus;
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gboolean had_latency = FALSE;
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pipeline = gst_pipeline_new (NULL);
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fail_unless (pipeline != NULL, "Could not create pipeline");
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@ -951,10 +1000,11 @@ GST_START_TEST (test_children_state_change_order_flagged_sink)
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ASSERT_STATE_CHANGE_MSG (bus, sink, GST_STATE_READY, GST_STATE_PAUSED, 107);
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#else
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pop_state_changed (bus, 2); /* pop remaining ready => paused messages off the bus */
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pop_state_changed (bus, 2, &had_latency); /* pop remaining ready => paused messages off the bus */
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ASSERT_STATE_CHANGE_MSG (bus, pipeline, GST_STATE_READY, GST_STATE_PAUSED,
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108);
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pop_async_done (bus);
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pop_async_done (bus, &had_latency);
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pop_latency (bus, &had_latency);
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#endif
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/* PAUSED => PLAYING */
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GST_DEBUG ("popping PAUSED -> PLAYING messages");
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@ -972,8 +1022,8 @@ GST_START_TEST (test_children_state_change_order_flagged_sink)
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fail_if (ret != GST_STATE_CHANGE_SUCCESS, "State change to READY failed");
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/* TODO: do we need to check downwards state change order as well? */
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pop_state_changed (bus, 4); /* pop playing => paused messages off the bus */
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pop_state_changed (bus, 4); /* pop paused => ready messages off the bus */
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pop_state_changed (bus, 4, &had_latency); /* pop playing => paused messages off the bus */
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pop_state_changed (bus, 4, &had_latency); /* pop paused => ready messages off the bus */
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while (GST_OBJECT_REFCOUNT_VALUE (pipeline) > 1)
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THREAD_SWITCH ();
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@ -1002,6 +1052,7 @@ GST_START_TEST (test_children_state_change_order_semi_sink)
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GstStateChangeReturn ret;
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GstState current, pending;
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GstBus *bus;
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gboolean had_latency = FALSE;
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/* (2) Now again, but check other code path where we don't have
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* a proper sink correctly flagged as such, but a 'semi-sink' */
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@ -1056,10 +1107,11 @@ GST_START_TEST (test_children_state_change_order_semi_sink)
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ASSERT_STATE_CHANGE_MSG (bus, src, GST_STATE_READY, GST_STATE_PAUSED, 206);
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ASSERT_STATE_CHANGE_MSG (bus, sink, GST_STATE_READY, GST_STATE_PAUSED, 207);
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#else
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pop_state_changed (bus, 2); /* pop remaining ready => paused messages off the bus */
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pop_state_changed (bus, 2, &had_latency); /* pop remaining ready => paused messages off the bus */
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ASSERT_STATE_CHANGE_MSG (bus, pipeline, GST_STATE_READY, GST_STATE_PAUSED,
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208);
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pop_async_done (bus);
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pop_async_done (bus, &had_latency);
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pop_latency (bus, &had_latency);
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/* PAUSED => PLAYING */
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GST_DEBUG ("popping PAUSED -> PLAYING messages");
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@ -1076,8 +1128,8 @@ GST_START_TEST (test_children_state_change_order_semi_sink)
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fail_if (ret != GST_STATE_CHANGE_SUCCESS, "State change to READY failed");
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/* TODO: do we need to check downwards state change order as well? */
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pop_state_changed (bus, 4); /* pop playing => paused messages off the bus */
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pop_state_changed (bus, 4); /* pop paused => ready messages off the bus */
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pop_state_changed (bus, 4, &had_latency); /* pop playing => paused messages off the bus */
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pop_state_changed (bus, 4, &had_latency); /* pop paused => ready messages off the bus */
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GST_DEBUG ("waiting for pipeline to reach refcount 1");
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while (GST_OBJECT_REFCOUNT_VALUE (pipeline) > 1)
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