tree d91fc044222a86888a70fb67524943de20ebab1e
parent 5572bd5aa73fb233c3d0c4ad4dc83615975ce425
author Alexander Aprelev <aam@google.com> 1615306850 +0000
committer commit-bot@chromium.org <commit-bot@chromium.org> 1615306850 +0000

[vm/concurrency] Fix tsan warning data race around Field guarded_cid_.

Use relaxed atomic write to match relaxed atomic read for guarded_cid_ field.

Fixes https://github.com/dart-lang/sdk/issues/45186

TEST=flaky tsan failures on  vm/dart_2/isolates/reload_many_isolates_test

Change-Id: Ib538a04187cff77ef278db4d62e551d5db9fd023
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/189280
Commit-Queue: Alexander Aprelev <aam@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>