tree eaeabd73da2974bec97a5b6756cebbd9fb25a083
parent 562ad899d9b72b4f37ea765cef743c0bd9aa02ab
author Loko Kung <lokokung@google.com> 1699314506 +0000
committer Dawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com> 1699314506 +0000

Clear all callbacks when the Instance is dropped.

- Fixes fuzzer issue in the bug. The userdata was not cleaned up
  because an async function (MapAsync) was called on a destroyed
  device, and the associated callback was never called in the
  fuzzer(s).
- Modernizes the code a bit to use MutexProtected.
- Updates MutexProtected to work with const-ness.

Bug: chromium:1497701
Change-Id: I15617bd00e49e6c2d1c5c2805e4335438b9ce0e2
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/158824
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Loko Kung <lokokung@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Austin Eng <enga@chromium.org>