commit ec7587283fec4138aa6bdb815a57402db7880c53
author Marcin Oczeretko <marcinoc@google.com> Wed Sep 12 12:53:47 2018 +0100
committer Marcin Oczeretko <marcinoc@google.com> Thu Sep 20 10:52:08 2018 +0100
tree fbcbd411569999ae560375e1a8d8a6ac1df4996f
parent 967b7f4f6ec3ed46745114bedff10069dad7f1dd

Add work source uid collection to LooperStats

Add ThreadLocalWorkSourceUid and Message.workSourceUid
which will store the UID which caused, directly or
indirectly, the Message to be enqueued.

This was needed because using Binder.getCallingUid() does
not give us enough data since quite a few Binder services
call Binder.clearCallingIdentity() when processing the
call.

Test: UT and manual
Change-Id: I35af3a9ca5193477070990b41ff5d9c52f420069

core/java/android/os/Handler.java

diff --git a/core/java/android/os/Handler.java b/core/java/android/os/Handler.java
index e03af9d..f3a9a50 100644
--- a/core/java/android/os/Handler.java
+++ b/core/java/android/os/Handler.java
@@ -739,6 +739,8 @@
 
     private boolean enqueueMessage(MessageQueue queue, Message msg, long uptimeMillis) {
         msg.target = this;
+        msg.workSourceUid = ThreadLocalWorkSourceUid.get();
+
         if (mAsynchronous) {
             msg.setAsynchronous(true);
         }