From 92617036fcc9b25378c8448c923d6346a012346b Mon Sep 17 00:00:00 2001
From: Dianne Hackborn <hackbod@google.com>
Date: Fri, 19 Jun 2015 15:32:19 -0700
Subject: [PATCH] Fix issue #21930140: Add config to turn off auto power
 features

Doze and app standby are now off in the default platform config.
The Google overlay turns them on.  Other people can do that as
well, if they are feeling like it.

Change-Id: Ic8a87f696df94f2d8354fe0772d03b672f464e32
---
 core/res/res/values/config.xml                |  9 +++++
 core/res/res/values/symbols.xml               |  1 +
 .../android/server/DeviceIdleController.java  | 34 +++++++++-------
 .../server/usage/UsageStatsService.java       | 39 +++++++++++++++----
 4 files changed, 60 insertions(+), 23 deletions(-)

diff --git a/core/res/res/values/config.xml b/core/res/res/values/config.xml
index 424a0b7d219da..edbe1304d9106 100755
--- a/core/res/res/values/config.xml
+++ b/core/res/res/values/config.xml
@@ -157,6 +157,15 @@
          ActivityManager based on screen size. -->
     <integer name="config_extraFreeKbytesAdjust">0</integer>
 
+    <!-- Set this to true to enable the platform's auto-power-save modes like doze and
+         app standby.  These are not enabled by default because they require a standard
+         cloud-to-device messaging service for apps to interact correctly with the modes
+         (such as to be able to deliver an instant message to the device even when it is
+         dozing).  This should be enabled if you have such services and expect apps to
+         correctly use them when installed on your device.  Otherwise, keep this disabled
+         so that applications can still use their own mechanisms. -->
+    <bool name="config_enableAutoPowerModes">false</bool>
+
     <!-- The duration (in milliseconds) that the radio will scan for a signal
          when there's no network connection. If the scan doesn't timeout, use zero -->
     <integer name="config_radioScanningTimeout">0</integer>
diff --git a/core/res/res/values/symbols.xml b/core/res/res/values/symbols.xml
index 295251c557185..e6f54eecd8668 100755
--- a/core/res/res/values/symbols.xml
+++ b/core/res/res/values/symbols.xml
@@ -251,6 +251,7 @@
   <java-symbol type="bool" name="config_bluetooth_le_peripheral_mode_supported" />
   <java-symbol type="bool" name="config_cellBroadcastAppLinks" />
   <java-symbol type="bool" name="config_duplicate_port_omadm_wappush" />
+  <java-symbol type="bool" name="config_enableAutoPowerModes" />
   <java-symbol type="bool" name="config_enable_emergency_call_while_sim_locked" />
   <java-symbol type="bool" name="config_enable_puk_unlock_screen" />
   <java-symbol type="bool" name="config_enableBurnInProtection" />
diff --git a/services/core/java/com/android/server/DeviceIdleController.java b/services/core/java/com/android/server/DeviceIdleController.java
index 82b334a3c25c4..dc203ffaee33c 100644
--- a/services/core/java/com/android/server/DeviceIdleController.java
+++ b/services/core/java/com/android/server/DeviceIdleController.java
@@ -97,9 +97,6 @@ public class DeviceIdleController extends SystemService
     private static final String ACTION_STEP_IDLE_STATE =
             "com.android.server.device_idle.STEP_IDLE_STATE";
 
-    private static final String ACTION_ENTER_INACTIVE_STATE =
-        "com.android.server.device_idle.ENTER_INACTIVE_STATE";
-
     private AlarmManager mAlarmManager;
     private IBatteryStats mBatteryStats;
     private PowerManagerInternal mLocalPowerManager;
@@ -112,7 +109,7 @@ public class DeviceIdleController extends SystemService
     private Intent mIdleIntent;
     private Display mCurDisplay;
     private AnyMotionDetector mAnyMotionDetector;
-    private boolean mIdleDisabled;
+    private boolean mEnabled;
     private boolean mScreenOn;
     private boolean mCharging;
     private boolean mSigMotionActive;
@@ -191,10 +188,6 @@ public class DeviceIdleController extends SystemService
                 synchronized (DeviceIdleController.this) {
                     stepIdleStateLocked();
                 }
-            } else if (ACTION_ENTER_INACTIVE_STATE.equals(intent.getAction())) {
-                synchronized (DeviceIdleController.this) {
-                    enterInactiveStateLocked();
-                }
             }
         }
     };
@@ -612,6 +605,8 @@ public class DeviceIdleController extends SystemService
         final PackageManager pm = getContext().getPackageManager();
 
         synchronized (this) {
+            mEnabled = getContext().getResources().getBoolean(
+                    com.android.internal.R.bool.config_enableAutoPowerModes);
             SystemConfig sysConfig = SystemConfig.getInstance();
             ArraySet<String> allowPower = sysConfig.getAllowInPowerSave();
             for (int i=0; i<allowPower.size(); i++) {
@@ -881,7 +876,7 @@ public class DeviceIdleController extends SystemService
 
     void becomeInactiveIfAppropriateLocked() {
         if (DEBUG) Slog.d(TAG, "becomeInactiveIfAppropriateLocked()");
-        if (!mScreenOn && !mCharging && !mIdleDisabled && mState == STATE_ACTIVE) {
+        if (!mScreenOn && !mCharging && mEnabled && mState == STATE_ACTIVE) {
             // Screen has turned off; we are now going to become inactive and start
             // waiting to see if we will ultimately go idle.
             mState = STATE_INACTIVE;
@@ -1216,8 +1211,12 @@ public class DeviceIdleController extends SystemService
         pw.println("    Completely disable device idle mode.");
         pw.println("  enable");
         pw.println("    Re-enable device idle mode after it had previously been disabled.");
-        pw.println("  whitelist");
+        pw.println("  enabled");
+        pw.println("    Print 1 if device idle mode is currently enabled, else 0.");
+        pw.println("  whitelist [package ...]");
         pw.println("    Add (prefix with +) or remove (prefix with -) packages.");
+        pw.println("  tempwhitelist [package ..]");
+        pw.println("    Temporarily place packages in whitelist for 10 seconds.");
     }
 
     void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
@@ -1252,8 +1251,8 @@ public class DeviceIdleController extends SystemService
                     return;
                 } else if ("disable".equals(arg)) {
                     synchronized (this) {
-                        if (!mIdleDisabled) {
-                            mIdleDisabled = true;
+                        if (mEnabled) {
+                            mEnabled = false;
                             becomeActiveLocked("disabled", Process.myUid());
                             pw.println("Idle mode disabled");
                         }
@@ -1261,13 +1260,18 @@ public class DeviceIdleController extends SystemService
                     return;
                 } else if ("enable".equals(arg)) {
                     synchronized (this) {
-                        if (mIdleDisabled) {
-                            mIdleDisabled = false;
+                        if (!mEnabled) {
+                            mEnabled = true;
                             becomeInactiveIfAppropriateLocked();
                             pw.println("Idle mode enabled");
                         }
                     }
                     return;
+                } else if ("enabled".equals(arg)) {
+                    synchronized (this) {
+                        pw.println(mEnabled ? "1" : " 0");
+                    }
+                    return;
                 } else if ("whitelist".equals(arg)) {
                     i++;
                     while (i < args.length) {
@@ -1364,9 +1368,9 @@ public class DeviceIdleController extends SystemService
                 }
             }
 
+            pw.print("  mEnabled="); pw.println(mEnabled);
             pw.print("  mSigMotionSensor="); pw.println(mSigMotionSensor);
             pw.print("  mCurDisplay="); pw.println(mCurDisplay);
-            pw.print("  mIdleDisabled="); pw.println(mIdleDisabled);
             pw.print("  mScreenOn="); pw.println(mScreenOn);
             pw.print("  mCharging="); pw.println(mCharging);
             pw.print("  mSigMotionActive="); pw.println(mSigMotionActive);
diff --git a/services/usage/java/com/android/server/usage/UsageStatsService.java b/services/usage/java/com/android/server/usage/UsageStatsService.java
index 3b7ed91306053..490236e41ac77 100644
--- a/services/usage/java/com/android/server/usage/UsageStatsService.java
+++ b/services/usage/java/com/android/server/usage/UsageStatsService.java
@@ -35,8 +35,6 @@ import android.content.ContentResolver;
 import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
-import android.content.SyncAdapterType;
-import android.content.pm.ApplicationInfo;
 import android.content.pm.PackageInfo;
 import android.content.pm.PackageManager;
 import android.content.pm.ParceledListSlice;
@@ -74,7 +72,6 @@ import com.android.internal.app.IBatteryStats;
 import com.android.internal.os.BackgroundThread;
 import com.android.internal.os.SomeArgs;
 import com.android.internal.util.IndentingPrintWriter;
-import com.android.server.DeviceIdleController;
 import com.android.server.SystemService;
 
 import java.io.BufferedReader;
@@ -138,6 +135,7 @@ public class UsageStatsService extends SystemService implements
     long mRealTimeSnapshot;
     long mSystemTimeSnapshot;
 
+    boolean mAppIdleEnabled;
     boolean mAppIdleParoled;
     private boolean mScreenOn;
     private long mLastAppIdleParoledTime;
@@ -175,10 +173,15 @@ public class UsageStatsService extends SystemService implements
         getContext().registerReceiverAsUser(new UserActionsReceiver(), UserHandle.ALL, userActions,
                 null, null);
 
-        IntentFilter deviceStates = new IntentFilter(BatteryManager.ACTION_CHARGING);
-        deviceStates.addAction(BatteryManager.ACTION_DISCHARGING);
-        deviceStates.addAction(PowerManager.ACTION_DEVICE_IDLE_MODE_CHANGED);
-        getContext().registerReceiver(new DeviceStateReceiver(), deviceStates);
+        mAppIdleEnabled = getContext().getResources().getBoolean(
+                com.android.internal.R.bool.config_enableAutoPowerModes);
+        if (mAppIdleEnabled) {
+            IntentFilter deviceStates = new IntentFilter(BatteryManager.ACTION_CHARGING);
+            deviceStates.addAction(BatteryManager.ACTION_DISCHARGING);
+            deviceStates.addAction(PowerManager.ACTION_DEVICE_IDLE_MODE_CHANGED);
+            getContext().registerReceiver(new DeviceStateReceiver(), deviceStates);
+        }
+
         synchronized (mLock) {
             cleanUpRemovedUsersLocked();
         }
@@ -186,7 +189,6 @@ public class UsageStatsService extends SystemService implements
         mRealTimeSnapshot = SystemClock.elapsedRealtime();
         mSystemTimeSnapshot = System.currentTimeMillis();
 
-
         publishLocalService(UsageStatsManagerInternal.class, new LocalService());
         publishBinderService(Context.USAGE_STATS_SERVICE, new BinderService());
     }
@@ -342,6 +344,10 @@ public class UsageStatsService extends SystemService implements
 
     /** Check all running users' or specified user's apps to see if they enter an idle state. */
     void checkIdleStates(int checkUserId) {
+        if (!mAppIdleEnabled) {
+            return;
+        }
+
         final int[] userIds;
         try {
             if (checkUserId == UserHandle.USER_ALL) {
@@ -772,6 +778,10 @@ public class UsageStatsService extends SystemService implements
     private boolean isAppIdleFiltered(String packageName, int userId,
             UserUsageStatsService userService, long timeNow, long screenOnTime) {
         if (packageName == null) return false;
+        // If not enabled at all, of course nobody is ever idle.
+        if (!mAppIdleEnabled) {
+            return false;
+        }
         synchronized (mLock) {
             // Temporary exemption, probably due to device charging or occasional allowance to
             // be allowed to sync, etc.
@@ -900,6 +910,19 @@ public class UsageStatsService extends SystemService implements
             pw.print("  mAppIdleParoleDurationMillis=");
             TimeUtils.formatDuration(mAppIdleParoleDurationMillis, pw);
             pw.println();
+
+            pw.println();
+            pw.print("mAppIdleEnabled="); pw.print(mAppIdleEnabled);
+            pw.print(" mAppIdleParoled="); pw.print(mAppIdleParoled);
+            pw.print(" mScreenOn="); pw.println(mScreenOn);
+            pw.print("mLastAppIdleParoledTime=");
+            TimeUtils.formatDuration(mLastAppIdleParoledTime, pw);
+            pw.println();
+            pw.print("mScreenOnTime="); TimeUtils.formatDuration(mScreenOnTime, pw);
+            pw.println();
+            pw.print("mScreenOnSystemTimeSnapshot=");
+            TimeUtils.formatDuration(mScreenOnSystemTimeSnapshot, pw);
+            pw.println();
         }
     }