From: Robert Foss <robert.foss@xxxxxxxxxxxxx>
This subtest verifies that waiting on fences works properly.
Signed-off-by: Robert Foss <robert.foss@xxxxxxxxxxxxx>
Reviewed-by: Eric Engestrom <eric@xxxxxxxxxxxx>
---
tests/sw_sync.c | 37 +++++++++++++++++++++++++++++++++++++
1 file changed, 37 insertions(+)
diff --git a/tests/sw_sync.c b/tests/sw_sync.c
index ecc75ca..9667b93 100644
--- a/tests/sw_sync.c
+++ b/tests/sw_sync.c
@@ -81,6 +81,40 @@ static void test_alloc_merge_fence(void)
close(timeline[1]);
}
+static void test_sync_busy(void)
+{
+ int fence, ret;
+ int timeline;
+
+ timeline = sw_sync_timeline_create();
+ fence = sw_sync_fence_create(timeline, 5);
+
+ /* Make sure that fence has not been signaled yet */
+ ret = sync_wait(fence, 0);
+ igt_assert_f(ret == -1 && errno == ETIME, "Fence signaled early (timeline value 0, fence seqno 5)\n");
+
+ /* Advance timeline from 0 -> 1 */
+ sw_sync_timeline_inc(timeline, 1);
+
+ /* Make sure that fence has not been signaled yet */
+ ret = sync_wait(fence, 0);
+ igt_assert_f(ret == -1 && errno == ETIME, "Fence signaled early (timeline value 1, fence seqno 5)\n");
+
+ /* Advance timeline from 1 -> 5: signaling the fence (seqno 5)*/
+ sw_sync_timeline_inc(timeline, 4);
+
+ ret = sync_wait(fence, 0);
+ igt_assert_f(ret == 0, "Fence not signaled (timeline value 5, fence seqno 5)\n");
+
+ /* Go even further, and confirm wait still succeeds */
+ sw_sync_timeline_inc(timeline, 10);
+ ret = sync_wait(fence, 0);
+ igt_assert_f(ret == 0, "Fence not signaled! (timeline value 10, fence seqno 5)\n");
+
+ close(fence);
+ close(timeline);
+}
+
igt_main
{
igt_subtest("alloc_timeline")
@@ -94,5 +128,8 @@ igt_main
igt_subtest("alloc_merge_fence")
test_alloc_merge_fence();
+
+ igt_subtest("sync_busy")
+ test_sync_busy();
}
--
2.10.2
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