On Thu, Sep 15, 2016 at 02:40:11PM -0400, robert.f...@collabora.com wrote:
> From: Robert Foss <robert.f...@collabora.com>
>
> This subtest verifies that waiting on fences works properly.
>
> Signed-off-by: Robert Foss <robert.f...@collabora.com>
> Reviewed-by: Eric Engestrom <e...@engestrom.ch>
> ---
> tests/sw_sync.c | 38 ++++++++++++++++++++++++++++++++++++++
> 1 file changed, 38 insertions(+)
>
> diff --git a/tests/sw_sync.c b/tests/sw_sync.c
> index fcb2f57..3061279 100644
> --- a/tests/sw_sync.c
> +++ b/tests/sw_sync.c
> @@ -81,6 +81,41 @@ static void test_alloc_merge_fence(void)
> close(timeline[1]);
> }
>
> +static void test_sync_wait(void)
These are not testing waits but busy queries.
static void test_sync_busy(void)
> +{
> + int fence, ret;
> + int timeline;
> +
> + timeline = sw_sync_timeline_create();
> + fence = sw_sync_fence_create(timeline, 5);
> +
> + /* Wait on fence until timeout */
Misleading comment
> + ret = sw_sync_wait(fence, 0);
> + igt_assert_f(ret == 0, "Failure waiting on fence until timeout\n");
igt_assert_f(ret == 0, "Fence created in an unexpectedly signaled state\n");
> +
> + /* Advance timeline from 0 -> 1 */
> + sw_sync_timeline_inc(timeline, 1);
> +
> + /* Wait on fence until timeout */
> + ret = sw_sync_wait(fence, 0);
> + igt_assert_f(ret == 0, "Failure waiting on fence until timeout\n");
igt_assert_f(ret == 0, "Fence signaled earlier (timeline value 1, fence seqno
5)\n");
> +
> + /* Signal the fence */
/* Advance timeline from 1 -> 5: signaling the fence (seqno 5)*/
> + sw_sync_timeline_inc(timeline, 4);
> +
> + /* Wait successfully */
Usless comment
> + ret = sw_sync_wait(fence, 0);
> + igt_assert_f(ret > 0, "Failure waiting on fence\n");
igt_assert_f(ret == 0, "Fence not signaled (timeline value 5, fence seqno
5)\n");
If we have a timeline info, we could use %d to say the current value.
Another test would be to then
seqno = 0;
for (i = 0; i < n_primes; i++) {
seqno += primes[i];
sw_sync_timeline_inc(timeline, primes[i]);
igt_assert_eq(sw_sync_timeline_get_seqno(timeline), seqno);
}
> +
> + /* Go even further, and confirm wait still succeeds */
> + sw_sync_timeline_inc(timeline, 10);
> + ret = sw_sync_wait(fence, 0);
> + igt_assert_f(ret > 0, "Failure waiting ahead\n");
igt_assert_f(ret == 0, "Fence now not signaled! (timeline value 10, fence seqno
5)\n");
> +
> + close(fence);
> + close(timeline);
> +}
--
Chris Wilson, Intel Open Source Technology Centre
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