d8cc8593c0cd760092ccc3d83225d9fafdf8e392 - platform_frameworks_base

commit	d8cc8593c0cd760092ccc3d83225d9fafdf8e392	[log] [tgz]
author	Marcin Oczeretko <marcinoc@google.com>	Wed Aug 22 16:07:36 2018 +0100
committer	Marcin Oczeretko <marcinoc@google.com>	Mon Sep 03 16:06:06 2018 +0100
tree	049718a81ebb3c567bfa0013b746a2ce4070d94a
parent	2af55bf3672db221899aac8742825b09adca2a14 [diff]

Collect telemetry data for System Server Loopers.

Adds LooperStats and LooperStatsService which set a static
Looper.Observer to record the count of dispatched messages and
cpu/latency information. The aggregated stats are collected by
Westworld as pulled atoms.

The collection is disabled by default and requires a manual call to
enable:

adb shell cmd looper_stats enable

Test: Unit tests and tested manually that the collected data seems
reasonable.

Change-Id: I7162fbca4e324f62887f95df3405205cbe4416ca

cmds/statsd/src/atoms.proto[diff]
cmds/statsd/src/external/StatsPullerManager.cpp[diff]
core/java/android/os/Looper.java[diff]
core/java/com/android/internal/os/LooperStats.java[Added - diff]
core/tests/coretests/src/com/android/internal/os/LooperStatsTest.java[Added - diff]
services/core/java/com/android/server/LooperStatsService.java[Added - diff]
services/core/java/com/android/server/stats/StatsCompanionService.java[diff]
services/java/com/android/server/SystemServer.java[diff]

8 files changed

tree: 049718a81ebb3c567bfa0013b746a2ce4070d94a