Add infrastructure to track activitiy relaunches

As a preparation to start synchronizing task size
with activity relaunches, we need a infrastructure
so we know in AM/WM when an activity is relaunching
and when it's done relaunching.

Bug: 26311778
Bug: 25015474
Change-Id: Ied3795eddbcd112f6329494afbf13178ca49a799
diff --git a/services/core/java/com/android/server/am/ActivityStackSupervisor.java b/services/core/java/com/android/server/am/ActivityStackSupervisor.java
index 7758029..0b22bd4 100644
--- a/services/core/java/com/android/server/am/ActivityStackSupervisor.java
+++ b/services/core/java/com/android/server/am/ActivityStackSupervisor.java
@@ -16,70 +16,6 @@
 
 package com.android.server.am;
 
-import static android.Manifest.permission.START_ANY_ACTIVITY;
-import static android.app.ActivityManager.LOCK_TASK_MODE_LOCKED;
-import static android.app.ActivityManager.LOCK_TASK_MODE_NONE;
-import static android.app.ActivityManager.LOCK_TASK_MODE_PINNED;
-import static android.app.ActivityManager.RESIZE_MODE_FORCED;
-import static android.app.ActivityManager.RESIZE_MODE_SYSTEM;
-import static android.app.ActivityManager.StackId.DOCKED_STACK_ID;
-import static android.app.ActivityManager.StackId.FIRST_DYNAMIC_STACK_ID;
-import static android.app.ActivityManager.StackId.FIRST_STATIC_STACK_ID;
-import static android.app.ActivityManager.StackId.FREEFORM_WORKSPACE_STACK_ID;
-import static android.app.ActivityManager.StackId.FULLSCREEN_WORKSPACE_STACK_ID;
-import static android.app.ActivityManager.StackId.HOME_STACK_ID;
-import static android.app.ActivityManager.StackId.INVALID_STACK_ID;
-import static android.app.ActivityManager.StackId.LAST_STATIC_STACK_ID;
-import static android.app.ActivityManager.StackId.PINNED_STACK_ID;
-import static android.content.Intent.FLAG_ACTIVITY_MULTIPLE_TASK;
-import static android.content.Intent.FLAG_ACTIVITY_NEW_TASK;
-import static android.content.pm.ActivityInfo.FLAG_SHOW_FOR_ALL_USERS;
-import static android.content.pm.PackageManager.PERMISSION_GRANTED;
-import static android.os.Trace.TRACE_TAG_ACTIVITY_MANAGER;
-import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_ALL;
-import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_CONTAINERS;
-import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_IDLE;
-import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_LOCKSCREEN;
-import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_LOCKTASK;
-import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_PAUSE;
-import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_RECENTS;
-import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_RELEASE;
-import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_STACK;
-import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_STATES;
-import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_SWITCH;
-import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_TASKS;
-import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_VISIBLE_BEHIND;
-import static com.android.server.am.ActivityManagerDebugConfig.POSTFIX_CONTAINERS;
-import static com.android.server.am.ActivityManagerDebugConfig.POSTFIX_IDLE;
-import static com.android.server.am.ActivityManagerDebugConfig.POSTFIX_LOCKTASK;
-import static com.android.server.am.ActivityManagerDebugConfig.POSTFIX_PAUSE;
-import static com.android.server.am.ActivityManagerDebugConfig.POSTFIX_RECENTS;
-import static com.android.server.am.ActivityManagerDebugConfig.POSTFIX_RELEASE;
-import static com.android.server.am.ActivityManagerDebugConfig.POSTFIX_STACK;
-import static com.android.server.am.ActivityManagerDebugConfig.POSTFIX_STATES;
-import static com.android.server.am.ActivityManagerDebugConfig.POSTFIX_SWITCH;
-import static com.android.server.am.ActivityManagerDebugConfig.POSTFIX_TASKS;
-import static com.android.server.am.ActivityManagerDebugConfig.POSTFIX_VISIBLE_BEHIND;
-import static com.android.server.am.ActivityManagerDebugConfig.TAG_AM;
-import static com.android.server.am.ActivityManagerDebugConfig.TAG_WITH_CLASS_NAME;
-import static com.android.server.am.ActivityManagerService.FIRST_SUPERVISOR_STACK_MSG;
-import static com.android.server.am.ActivityRecord.APPLICATION_ACTIVITY_TYPE;
-import static com.android.server.am.ActivityRecord.HOME_ACTIVITY_TYPE;
-import static com.android.server.am.ActivityRecord.RECENTS_ACTIVITY_TYPE;
-import static com.android.server.am.ActivityStack.ActivityState.DESTROYED;
-import static com.android.server.am.ActivityStack.ActivityState.DESTROYING;
-import static com.android.server.am.ActivityStack.ActivityState.INITIALIZING;
-import static com.android.server.am.ActivityStack.ActivityState.PAUSED;
-import static com.android.server.am.ActivityStack.ActivityState.PAUSING;
-import static com.android.server.am.ActivityStack.ActivityState.RESUMED;
-import static com.android.server.am.ActivityStack.ActivityState.STOPPED;
-import static com.android.server.am.ActivityStack.ActivityState.STOPPING;
-import static com.android.server.am.TaskRecord.LOCK_TASK_AUTH_DONT_LOCK;
-import static com.android.server.am.TaskRecord.LOCK_TASK_AUTH_LAUNCHABLE;
-import static com.android.server.am.TaskRecord.LOCK_TASK_AUTH_LAUNCHABLE_PRIV;
-import static com.android.server.am.TaskRecord.LOCK_TASK_AUTH_PINNABLE;
-import static com.android.server.am.TaskRecord.LOCK_TASK_AUTH_WHITELISTED;
-
 import android.Manifest;
 import android.app.Activity;
 import android.app.ActivityManager;
@@ -164,6 +100,70 @@
 import java.util.List;
 import java.util.Set;
 
+import static android.Manifest.permission.START_ANY_ACTIVITY;
+import static android.app.ActivityManager.LOCK_TASK_MODE_LOCKED;
+import static android.app.ActivityManager.LOCK_TASK_MODE_NONE;
+import static android.app.ActivityManager.LOCK_TASK_MODE_PINNED;
+import static android.app.ActivityManager.RESIZE_MODE_FORCED;
+import static android.app.ActivityManager.RESIZE_MODE_SYSTEM;
+import static android.app.ActivityManager.StackId.DOCKED_STACK_ID;
+import static android.app.ActivityManager.StackId.FIRST_DYNAMIC_STACK_ID;
+import static android.app.ActivityManager.StackId.FIRST_STATIC_STACK_ID;
+import static android.app.ActivityManager.StackId.FREEFORM_WORKSPACE_STACK_ID;
+import static android.app.ActivityManager.StackId.FULLSCREEN_WORKSPACE_STACK_ID;
+import static android.app.ActivityManager.StackId.HOME_STACK_ID;
+import static android.app.ActivityManager.StackId.INVALID_STACK_ID;
+import static android.app.ActivityManager.StackId.LAST_STATIC_STACK_ID;
+import static android.app.ActivityManager.StackId.PINNED_STACK_ID;
+import static android.content.Intent.FLAG_ACTIVITY_MULTIPLE_TASK;
+import static android.content.Intent.FLAG_ACTIVITY_NEW_TASK;
+import static android.content.pm.ActivityInfo.FLAG_SHOW_FOR_ALL_USERS;
+import static android.content.pm.PackageManager.PERMISSION_GRANTED;
+import static android.os.Trace.TRACE_TAG_ACTIVITY_MANAGER;
+import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_ALL;
+import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_CONTAINERS;
+import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_IDLE;
+import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_LOCKSCREEN;
+import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_LOCKTASK;
+import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_PAUSE;
+import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_RECENTS;
+import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_RELEASE;
+import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_STACK;
+import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_STATES;
+import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_SWITCH;
+import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_TASKS;
+import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_VISIBLE_BEHIND;
+import static com.android.server.am.ActivityManagerDebugConfig.POSTFIX_CONTAINERS;
+import static com.android.server.am.ActivityManagerDebugConfig.POSTFIX_IDLE;
+import static com.android.server.am.ActivityManagerDebugConfig.POSTFIX_LOCKTASK;
+import static com.android.server.am.ActivityManagerDebugConfig.POSTFIX_PAUSE;
+import static com.android.server.am.ActivityManagerDebugConfig.POSTFIX_RECENTS;
+import static com.android.server.am.ActivityManagerDebugConfig.POSTFIX_RELEASE;
+import static com.android.server.am.ActivityManagerDebugConfig.POSTFIX_STACK;
+import static com.android.server.am.ActivityManagerDebugConfig.POSTFIX_STATES;
+import static com.android.server.am.ActivityManagerDebugConfig.POSTFIX_SWITCH;
+import static com.android.server.am.ActivityManagerDebugConfig.POSTFIX_TASKS;
+import static com.android.server.am.ActivityManagerDebugConfig.POSTFIX_VISIBLE_BEHIND;
+import static com.android.server.am.ActivityManagerDebugConfig.TAG_AM;
+import static com.android.server.am.ActivityManagerDebugConfig.TAG_WITH_CLASS_NAME;
+import static com.android.server.am.ActivityManagerService.FIRST_SUPERVISOR_STACK_MSG;
+import static com.android.server.am.ActivityRecord.APPLICATION_ACTIVITY_TYPE;
+import static com.android.server.am.ActivityRecord.HOME_ACTIVITY_TYPE;
+import static com.android.server.am.ActivityRecord.RECENTS_ACTIVITY_TYPE;
+import static com.android.server.am.ActivityStack.ActivityState.DESTROYED;
+import static com.android.server.am.ActivityStack.ActivityState.DESTROYING;
+import static com.android.server.am.ActivityStack.ActivityState.INITIALIZING;
+import static com.android.server.am.ActivityStack.ActivityState.PAUSED;
+import static com.android.server.am.ActivityStack.ActivityState.PAUSING;
+import static com.android.server.am.ActivityStack.ActivityState.RESUMED;
+import static com.android.server.am.ActivityStack.ActivityState.STOPPED;
+import static com.android.server.am.ActivityStack.ActivityState.STOPPING;
+import static com.android.server.am.TaskRecord.LOCK_TASK_AUTH_DONT_LOCK;
+import static com.android.server.am.TaskRecord.LOCK_TASK_AUTH_LAUNCHABLE;
+import static com.android.server.am.TaskRecord.LOCK_TASK_AUTH_LAUNCHABLE_PRIV;
+import static com.android.server.am.TaskRecord.LOCK_TASK_AUTH_PINNABLE;
+import static com.android.server.am.TaskRecord.LOCK_TASK_AUTH_WHITELISTED;
+
 public final class ActivityStackSupervisor implements DisplayListener {
     private static final String TAG = TAG_WITH_CLASS_NAME ? "ActivityStackSupervisor" : TAG_AM;
     private static final String TAG_CONTAINERS = TAG + POSTFIX_CONTAINERS;
@@ -3293,6 +3293,14 @@
         return mLockTaskModeState;
     }
 
+    void activityRelaunchedLocked(IBinder token) {
+        mWindowManager.notifyAppRelaunchingFinished(token);
+    }
+
+    void activityRelaunchingLocked(ActivityRecord r) {
+        mWindowManager.notifyAppRelaunching(r.appToken);
+    }
+
     void logStackState() {
         mActivityMetricsLogger.logWindowState();
     }