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tests: bufferpool: add dead lock test for buffer discard

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you will see a deadlock after you apply this patch, and run following commandline:

GST_STATE_IGNORE_ELEMENTS=1 tests/check/gst_gstbufferpool

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/470>
This commit is contained in:
Xu Guangxin 2020-05-11 18:21:48 +08:00 committed by GStreamer Merge Bot
parent f41f84538a
commit 8a58d67709
1 changed files with 36 additions and 0 deletions
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36
tests/check/gst/gstbufferpool.c
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@ -301,6 +301,41 @@ GST_START_TEST (test_flushing_pool_returns_flushing)
GST_END_TEST;
static gpointer
unref_buf (gpointer p)
{
GstBuffer *buf = (GstBuffer *) p;
/* remove all memory, pool should not reuse this buffer */
gst_buffer_remove_all_memory (buf);
gst_buffer_unref (buf);
return NULL;
}
GST_START_TEST (test_no_deadlock_for_buffer_discard)
{
GstBufferPool *pool;
GstBuffer *buf1, *buf2;
GThread *thread;
pool = create_pool (1, 1, 1);
fail_unless (pool);
gst_buffer_pool_set_active (pool, TRUE);
fail_unless (gst_buffer_pool_acquire_buffer (pool, &buf1,
NULL) == GST_FLOW_OK);
thread = g_thread_new (NULL, unref_buf, buf1);
fail_unless (thread);
/* we will be blocked here until buf1 unrefed */
fail_unless (gst_buffer_pool_acquire_buffer (pool, &buf2,
NULL) == GST_FLOW_OK);
gst_buffer_unref (buf2);
g_thread_join (thread);
gst_object_unref (pool);
}
GST_END_TEST;
static Suite *
gst_buffer_pool_suite (void)
{
@ -319,6 +354,7 @@ gst_buffer_pool_suite (void)
tcase_add_test (tc_chain, test_pool_activation_and_config);
tcase_add_test (tc_chain, test_pool_config_validate);
tcase_add_test (tc_chain, test_flushing_pool_returns_flushing);
tcase_add_test (tc_chain, test_no_deadlock_for_buffer_discard);
return s;
}