Commit f63fbcd5f2a203bfcd13c297e2b83b9c754bac01
2020-01-29T16:13:56
Fuchsia: Limit number of concurrent presents in ScenicWindow The test suite occasionally runs into the following error: [02036.794449][326733][326738][klog] INFO: [ERROR:src/ui/scenic/lib/scenic/session.cc(412)] Scenic session error (session_id: 1): Present2() called with no more present calls allowed. Terminating session. This is actually a problem with the test harness as resetting the window triggers a present with no fences and no OnFramePresentedCallback which means there is no way to know if we will exceed the limit. Add an OnFramePresentedCallback and count presents to stay under the limit. This blocks if there's more than 2 in flight presents. A dedicated async loop is used to avoid re-entering other code while waiting to present (there is no such case in the ANGLE test suite currently, but better safe than sorry). Typically if we run the whole suite there will be a failure in the middle, but re-trying the test that failed won't repro the issue. Add a test that reliably exhausts the limit by calling resetNativeWindow() in a loop. Bug: angleproject:4360 Change-Id: I24eb01fd72fc0be57c36e49b5875023a80d6ab91 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2027934 Commit-Queue: Michael Spang <spang@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org>