From 51720a7c00c9621430135c695eb9d85668d1ace1 Mon Sep 17 00:00:00 2001 From: Robert Foss Date: Wed, 7 Dec 2016 15:07:53 -0500 Subject: tests/sw_sync: Add subtest test_sync_busy_fork Add subtest test_sync_busy_fork which increments the timeline in a forked child process. Signed-off-by: Robert Foss Reviewed-by: Tomeu Vizoso --- tests/sw_sync.c | 39 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) (limited to 'tests/sw_sync.c') diff --git a/tests/sw_sync.c b/tests/sw_sync.c index 44ddab78..453ba5ea 100644 --- a/tests/sw_sync.c +++ b/tests/sw_sync.c @@ -172,6 +172,42 @@ static void test_sync_busy(void) close(timeline); } +static void test_sync_busy_fork(void) +{ + int fence, ret; + int timeline; + int skip = 0; + + timeline = sw_sync_timeline_create(); + fence = sw_sync_fence_create(timeline, 1); + + switch (fork()) { + case 0: + /* Child process */ + usleep(1*1000*1000); + /* Advance timeline from 0 -> 1 */ + sw_sync_timeline_inc(timeline, 1); + _Exit(0); + break; + case -1: + /* Failed fork */ + skip = 1; + break; + default: + /* Parent process */ + ret = sync_wait(fence, 0); + igt_assert_f(ret == -1 && errno == ETIME, "Fence signaled (it should not have been signalled yet)\n"); + + ret = sync_wait(fence, 2*1000); + igt_assert_f(ret == 0, "Fence not signaled (timeline value 1 fence seqno 1)\n"); + break; + } + + close(fence); + close(timeline); + igt_require(!skip); +} + static void test_sync_merge_invalid(void) { int in_fence; @@ -784,6 +820,9 @@ igt_main igt_subtest("sync_busy") test_sync_busy(); + igt_subtest("sync_busy_fork") + test_sync_busy_fork(); + igt_subtest("sync_merge_invalid") test_sync_merge_invalid(); -- cgit v1.2.3