UidObserver / Camera: Track the OOM adj of a uid via UidObserver.
Previously, onUidProcAdjChanged merely signaled that the OOM adj of a
uid changed, but did not provide the actual OOM adj score. Having this
information allows the camera service to cut out redundant calls to
onCameraAccessPrioritiesChanged and avoid overwhelming apps.
The number of calls to onCameraAccessPrioritiesChanged is reduced by
only signaling when it's likely the uid owning a camera would lose
access to it if another uid tried to open that camera. This is opposed
to the status quo, which signals every time a watched uid changes its
OOM adj, which is highly inefficient.
Bug: 274486653
Test: -- on physical device:
-- testCamera2AccessCallbackInSplitMode x10
-- ActivityManagerServiceTest
-- ActivityManagerProcessStateTest
-- ActivityManagerFgsBgStartTest
-- UidObserverControllerTest
-- Alternate focus in split screen between Camera2 + GCA x20
Change-Id: Ia8d36e7a49156d537ae4da3540a1046e3200d930
diff --git a/services/sensorservice/SensorService.h b/services/sensorservice/SensorService.h
index fe72a69..0aa1bcb 100644
--- a/services/sensorservice/SensorService.h
+++ b/services/sensorservice/SensorService.h
@@ -288,7 +288,7 @@
void onUidStateChanged(uid_t uid __unused, int32_t procState __unused,
int64_t procStateSeq __unused,
int32_t capability __unused) override {}
- void onUidProcAdjChanged(uid_t uid __unused) override {}
+ void onUidProcAdjChanged(uid_t uid __unused, int32_t adj __unused) override {}
void addOverrideUid(uid_t uid, bool active);
void removeOverrideUid(uid_t uid);