tree 71be7676c4125b6d43ad72c3bb6accd8b86dd846
parent e105f962cf0020ee96a5a14a881c0de4ad46706c
author Corentin Wallez <cwallez@chromium.org> 1553240194 +0000
committer Commit Bot service account <commit-bot@chromium.org> 1553240194 +0000

Metal: Expose function to wait for commands to be scheduled.

This is to allow proper synchronization with other devices and APIs on
macOS. There is a global graphics queue so we usually don't need
synchronization but on Metal, commands are inserted on this queue only
when the command buffer is scheduled.

Metal's schedule and completed handlers can be fired on a different
thread so this CL also makes the code there data-race free.

BUG=chromium:938895
BUG=dawn:112

Change-Id: Id45a66fb4d13216b9d01f75e0766732f6e09ddf0
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/5700
Reviewed-by: Austin Eng <enga@chromium.org>
Reviewed-by: Kai Ninomiya <kainino@chromium.org>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>