tree 60934024af3c60d6a57132dd4997f6ef3fd70978
parent 620c172167c07c66324778ce4122b4119abebcca
author asiva <asiva@google.com> 1697143528 +0000
committer Commit Queue <dart-scoped@luci-project-accounts.iam.gserviceaccount.com> 1697143528 +0000

[beta][vm, profiler] Don't assume the isolate has a mutator during a profile sample.

A sample can be taken when Thread::Current() and Thread::Current()->isolate() are non-NULL. When a thread is entering or exiting an isolate, the is a brief window between the TLS being set/cleared and Isolate::mutator_thread_ being set/cleared.

TEST=vm/cc/Profiler_EnterExitIsolate

Fixes: https://github.com/flutter/flutter/issues/134548
Cherry-pick-request: https://github.com/dart-lang/sdk/issues/53713
Cherry-pick: https://dart-review.googlesource.com/c/sdk/+/328380
Change-Id: Ic8c0aecd65101a882a8ff6a9ec02c4a9ea1d1cfe
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/329804
Commit-Queue: Siva Annamalai <asiva@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>