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Commit a8c34e14 authored by Ben Lin's avatar Ben Lin
Browse files

Check for Wifi's power stats capabilities before asking for it. 

Bug: 79893981
Test: On devices where Wifi's power stats are not available, `adb shell
'time dumpsys batterystats --checkin |wc -l'` returns much faster now.

Change-Id: Id5a9dbe6496c3033afafcff6cae86d91c13f8c90
parent 3261b948

services/core/java/com/android/server/am/BatteryExternalStatsWorker.java

+7 −2
Original line number Diff line number Diff line
@@ -15,6 +15,8 @@ 
 */

package com.android.server.am;



import static android.net.wifi.WifiManager.WIFI_FEATURE_LINK_LAYER_STATS;



import android.annotation.Nullable;

import android.bluetooth.BluetoothActivityEnergyInfo;

import android.bluetooth.BluetoothAdapter;
@@ -410,8 +412,11 @@ class BatteryExternalStatsWorker implements BatteryStatsImpl.ExternalStatsSync { 


            if (mWifiManager != null) {

                try {

                    // Only fetch WiFi power data if it is supported.

                    if ((mWifiManager.getSupportedFeatures() & WIFI_FEATURE_LINK_LAYER_STATS) != 0) {

                        wifiReceiver = new SynchronousResultReceiver("wifi");

                        mWifiManager.requestActivityInfo(wifiReceiver);

                    }

                } catch (RemoteException e) {

                    // Oh well.

                }