tree ea2552c77f6a3beaf325a87d2bf13ec56d07b797
parent 322bcf827aa00632b91285faf30d3822069616c7
author Austin Eng <enga@chromium.org> 1660962161 +0000
committer Dawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com> 1660962161 +0000

Make Adapter and Instance lifetimes more robust

Previously, we would get a use-after-free if you dropped the instance
before an adapter created from it. This CL fixes up the lifetimes
such that Device refs Adapter refs Instance. Instance uses a
cycle-breaking refcount so that it releases internal refs to its
adapters when the last external ref is dropped.

Bug: none
Change-Id: I5304ec86f425247d4c45ca342fda393cc19689e3
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/99820
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Loko Kung <lokokung@google.com>
Commit-Queue: Austin Eng <enga@chromium.org>