| /* |
| * Copyright (C) 2018 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License |
| */ |
| |
| package com.android.server; |
| |
| import android.app.AppGlobals; |
| import android.content.pm.PackageInfo; |
| import android.content.pm.PackageManager; |
| import android.os.Binder; |
| import android.os.RemoteException; |
| import android.os.ServiceManager; |
| import android.os.SystemProperties; |
| import android.os.UserHandle; |
| import android.util.Slog; |
| |
| import com.android.internal.os.BinderCallsStats; |
| |
| import java.io.FileDescriptor; |
| import java.io.PrintWriter; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| |
| public class BinderCallsStatsService extends Binder { |
| |
| private static final String TAG = "BinderCallsStatsService"; |
| |
| private static final String PERSIST_SYS_BINDER_CALLS_DETAILED_TRACKING |
| = "persist.sys.binder_calls_detailed_tracking"; |
| |
| public static void start() { |
| BinderCallsStatsService service = new BinderCallsStatsService(); |
| ServiceManager.addService("binder_calls_stats", service); |
| boolean detailedTrackingEnabled = SystemProperties.getBoolean( |
| PERSIST_SYS_BINDER_CALLS_DETAILED_TRACKING, false); |
| |
| if (detailedTrackingEnabled) { |
| Slog.i(TAG, "Enabled CPU usage tracking for binder calls. Controlled by " |
| + PERSIST_SYS_BINDER_CALLS_DETAILED_TRACKING |
| + " or via dumpsys binder_calls_stats --enable-detailed-tracking"); |
| BinderCallsStats.getInstance().setDetailedTracking(true); |
| } |
| } |
| |
| public static void reset() { |
| Slog.i(TAG, "Resetting stats"); |
| BinderCallsStats.getInstance().reset(); |
| } |
| |
| @Override |
| protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { |
| boolean verbose = false; |
| if (args != null) { |
| for (final String arg : args) { |
| if ("-a".equals(arg)) { |
| verbose = true; |
| } else if ("--reset".equals(arg)) { |
| reset(); |
| pw.println("binder_calls_stats reset."); |
| return; |
| } else if ("--enable-detailed-tracking".equals(arg)) { |
| SystemProperties.set(PERSIST_SYS_BINDER_CALLS_DETAILED_TRACKING, "1"); |
| BinderCallsStats.getInstance().setDetailedTracking(true); |
| pw.println("Detailed tracking enabled"); |
| return; |
| } else if ("--disable-detailed-tracking".equals(arg)) { |
| SystemProperties.set(PERSIST_SYS_BINDER_CALLS_DETAILED_TRACKING, ""); |
| BinderCallsStats.getInstance().setDetailedTracking(false); |
| pw.println("Detailed tracking disabled"); |
| return; |
| } else if ("-h".equals(arg)) { |
| pw.println("binder_calls_stats commands:"); |
| pw.println(" --reset: Reset stats"); |
| pw.println(" --enable-detailed-tracking: Enables detailed tracking"); |
| pw.println(" --disable-detailed-tracking: Disables detailed tracking"); |
| return; |
| } else { |
| pw.println("Unknown option: " + arg); |
| } |
| } |
| } |
| BinderCallsStats.getInstance().dump(pw, getAppIdToPackagesMap(), verbose); |
| } |
| |
| private Map<Integer, String> getAppIdToPackagesMap() { |
| List<PackageInfo> packages; |
| try { |
| packages = AppGlobals.getPackageManager() |
| .getInstalledPackages(PackageManager.MATCH_UNINSTALLED_PACKAGES, |
| UserHandle.USER_SYSTEM).getList(); |
| } catch (RemoteException e) { |
| throw e.rethrowFromSystemServer(); |
| } |
| Map<Integer,String> map = new HashMap<>(); |
| for (PackageInfo pkg : packages) { |
| String name = pkg.packageName; |
| int uid = pkg.applicationInfo.uid; |
| // Use sharedUserId string as package name if there are collisions |
| if (pkg.sharedUserId != null && map.containsKey(uid)) { |
| name = "shared:" + pkg.sharedUserId; |
| } |
| map.put(uid, name); |
| } |
| return map; |
| } |
| |
| } |