[PATCH i-g-t v11 06/21] tests/sw_sync: Add subtest test_sync_busy

Robert Foss
2016-12-07T20:08:19Z

This subtest verifies that waiting on fences works properly.

Signed-off-by: Robert Foss <robert.foss@collabora.com>
Reviewed-by: Eric Engestrom <eric@engestrom.ch>
Reviewed-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
---
tests/sw_sync.c | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 51 insertions(+)

diff --git a/tests/sw_sync.c b/tests/sw_sync.c
index 1af571bb..075791fd 100644
--- a/tests/sw_sync.c
+++ b/tests/sw_sync.c
@@ -29,6 +29,7 @@

#include "igt.h"
#include "igt_aux.h"
+#include "igt_primes.h"

#include "sw_sync.h"

@@ -81,6 +82,53 @@ static void test_alloc_merge_fence(void)
close(timeline[1]);
}

+static void test_sync_busy(void)
+{
+ int fence, ret;
+ int timeline;
+ int seqno;
+
+ 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, 5);
+ ret = sync_wait(fence, 0);
+ igt_assert_f(ret == 0, "Fence not signaled (timeline value 10, fence seqno 5)\n");
+
+ seqno = 10;
+ for_each_prime_number(prime, 100) {
+ int fence_prime;
+ seqno += prime;
+
+ fence_prime = sw_sync_fence_create(timeline, seqno);
+ sw_sync_timeline_inc(timeline, prime);
+
+ ret = sync_wait(fence_prime, 0);
+ igt_assert_f(ret == 0, "Fence not signaled during test of prime timeline increments\n");
+ close(fence_prime);
+ }
+
+ close(fence);
+ close(timeline);
+}
+
igt_main
{
igt_subtest("alloc_timeline")
@@ -94,5 +142,8 @@ igt_main

igt_subtest("alloc_merge_fence")
test_alloc_merge_fence();
+
+ igt_subtest("sync_busy")
+ test_sync_busy();