commit 6715ca1aef479cd9cdbbc444cddfe2e7fcdd25e6
author Tej Singh <singhtejinder@google.com> Thu Sep 10 23:20:58 2020 -0700
committer Anis Assi <anisassi@google.com> Fri Feb 26 12:17:01 2021 -0800
tree 6bbc1489bcfbca0ade2a1a6853ef2f5c8b45e1a4
parent 59d62576fa40f80ca8cb7d7ab0041714022438c8

Fix thread safety issue on clearing cache

Historically, we havent held a lock on ForceClearCache and
ClearCacheIfNecessary. This is not thread safe because kAllPullAtomInfo
must be accessed in a lock, especially now that pullers can be
registered/unregistered.

Test: atest statsd_test, wrote a repro cl.
Bug: 168156854
Bug: 173552790
Change-Id: I47d53a6d9d274bca4c78dbfd87e0097091b7b8cb
Merged-In: I47d53a6d9d274bca4c78dbfd87e0097091b7b8cb
(cherry picked from commit f9a4bb18ffa1605cced3ee4b161675a0c88941be)
(cherry picked from commit c7f94ac6347aaa77f890d1b382177968d2581894)