commit ac2f090d3838c6ebfd20a6ce6006e94ac0768f9e
author Lokbondo Kung <lokokung@google.com> Sat Sep 20 23:01:21 2025 -0700
committer Dawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com> Sat Sep 20 23:01:21 2025 -0700
tree 284b69f8dcc4c3e270d5e4e3e561eef80b18743a
parent 83c981ee477dd1ece3df6b27f6629e4c0ae5a956

[dawn][wire] Implements timed WaitAny for Dawn wire client.

- Implements timed WaitAny via conditional variables on the wire
  client. Since the wire client now spontaneously receives future
  completion tasks, we can use conditional variables to notice
  changes in the state of the events, and fire the callbacks
  via WaitAny.
- Updates EventTests.cpp to test pretty much all possible callback
  mode and wait mechanism combinations, both on and off the wire.
- Updates other relevant tests w.r.t the wire not being able to
  handle timed waits.
- Note that this change required refcounting the client future
  events since we use the presence of the event in the map as an
  indicator to that both the event and it's corresponding
  callback are completed. This means we can't remove the event
  from the list until the callback is finished, hence some of the
  changes.
- This change also updates the way that the TrackedEvents on the
  client handle a call to `Complete`. Since multiple threads
  could potentially call `Complete`, we need to ensure that only
  one thread will ever really complete the callback.

Bug: 441981783
Change-Id: I45ad9507f558860ceb7284ee9487e880e6e868ac
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/260461
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Kai Ninomiya <kainino@chromium.org>
Commit-Queue: Loko Kung <lokokung@google.com>