lib/core: Handle asserts in threads

Since IGT is using magic control blocks (igt_subtest et al.) asserts
jump out the them using longjmp() causing a bunch of confusing messages
and occasionally crashing the whole process.

This is not the behavior we want :-)

With this patch:

1. simple_main, dynamic and subtest each clears the thread failure state
   at the start

2. each of those blocks also asserts no thread failures at the end

3. igt_assert() in non-main thread prints out the error + stacktrace
   and marks that we have failed thread

Issue: https://gitlab.freedesktop.org/drm/igt-gpu-tools/-/issues/55
Signed-off-by: Arkadiusz Hiler <arkadiusz.hiler@intel.com>
Reviewed-by: Petri Latvala <petri.latvala@intel.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/lib/igt_thread.h b/lib/igt_thread.h
index b16f803f..4b9c222d 100644
--- a/lib/igt_thread.h
+++ b/lib/igt_thread.h
@@ -21,4 +21,8 @@
  * IN THE SOFTWARE.
  */
 
+void igt_thread_clear_fail_state(void);
+void igt_thread_fail(void);
+void igt_thread_assert_no_failures(void);
+
 bool igt_thread_is_main(void);