commit 7394eaa6ece3a05ada3b634d0b4bb63729611c3d
author Siarhei Vishniakou <svv@google.com> Thu Apr 09 11:16:18 2020 -0700
committer Siarhei Vishniakou <svv@google.com> Tue Jun 16 17:41:44 2020 -0700
tree 97552c842aa6dbd38fa5effd4e5c6ab456fdaa57
parent 1ea3cf10aa1f5258eb98b34264ac94eb004b2239

Log windows that are being interacted with

If the list of windows being interacted with changes, log the new list
to event log.

Example logs:

06-08 15:47:55.349  4105  4181 I input_interaction: Interaction with windows: ee638df NotificationShade (server),
06-08 15:48:03.917  4105  4181 I input_interaction: Interaction with windows: 399b259 com.google.android.apps.nexuslauncher/com.google.android.apps.nexuslauncher.NexusLauncherActivity (server),
06-08 15:48:10.844  4105  4181 I input_interaction: Interaction with windows: fcc1e60 com.android.systemui.ImageWallpaper (server), 399b259 com.google.android.apps.nexuslauncher/com.google.android.apps.nexuslauncher.NexusLauncherActivity (server),
06-08 15:49:30.091  4105  4181 I input_interaction: Interaction with windows: ee638df NotificationShade (server),
06-08 15:49:31.757  4105  4181 I input_interaction: Interaction with windows: fcc1e60 com.android.systemui.ImageWallpaper (server), 399b259 com.google.android.apps.nexuslauncher/com.google.android.apps.nexuslauncher.NexusLauncherActivity (server),
06-08 15:49:33.293  4105  4181 I input_interaction: Interaction with windows: <none>

Bug: 153092301
Test: adb logcat -b events | grep -i input
Change-Id: Ia4216beb200163e60e05374b6ea363412bff55f3
Merged-In: Ia4216beb200163e60e05374b6ea363412bff55f3

services/inputflinger/dispatcher/InputDispatcher.h

diff --git a/services/inputflinger/dispatcher/InputDispatcher.h b/services/inputflinger/dispatcher/InputDispatcher.h
index 0c3ea36..1980435 100644
--- a/services/inputflinger/dispatcher/InputDispatcher.h
+++ b/services/inputflinger/dispatcher/InputDispatcher.h
@@ -48,6 +48,7 @@
 #include <deque>
 #include <optional>
 #include <unordered_map>
+#include <unordered_set>
 
 #include <InputListener.h>
 #include <InputReporterInterface.h>
@@ -323,6 +324,11 @@
     // Dispatcher state at time of last ANR.
     std::string mLastAnrState GUARDED_BY(mLock);
 
+    // The connection token of the channel that was last interacted with.
+    std::unordered_set<sp<IBinder>, IBinderHash> mInteractionConnections GUARDED_BY(mLock);
+    void updateInteractionTokensLocked(const EventEntry& entry,
+                                       const std::vector<InputTarget>& targets) REQUIRES(mLock);
+
     // Dispatch inbound events.
     bool dispatchConfigurationChangedLocked(nsecs_t currentTime, ConfigurationChangedEntry* entry)
             REQUIRES(mLock);