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      1 /*
      2  * Copyright (C) 2016 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License
     15  */
     16 
     17 package com.android.internal.telephony;
     18 
     19 import android.os.SystemClock;
     20 import android.telephony.ClientRequestStats;
     21 
     22 import com.android.internal.annotations.VisibleForTesting;
     23 
     24 import java.io.PrintWriter;
     25 import java.util.ArrayList;
     26 import java.util.HashMap;
     27 import java.util.List;
     28 
     29 public class ClientWakelockTracker {
     30     public static final String LOG_TAG = "ClientWakelockTracker";
     31     @VisibleForTesting
     32     public HashMap<String, ClientWakelockAccountant> mClients =
     33         new HashMap<String, ClientWakelockAccountant>();
     34     @VisibleForTesting
     35     public ArrayList<ClientWakelockAccountant> mActiveClients = new ArrayList<>();
     36 
     37     @VisibleForTesting
     38     public void startTracking(String clientId, int requestId, int token, int numRequestsInQueue) {
     39         ClientWakelockAccountant client = getClientWakelockAccountant(clientId);
     40         long uptime = SystemClock.uptimeMillis();
     41         client.startAttributingWakelock(requestId, token, numRequestsInQueue, uptime);
     42         updateConcurrentRequests(numRequestsInQueue, uptime);
     43         synchronized (mActiveClients) {
     44             if (!mActiveClients.contains(client)) {
     45                 mActiveClients.add(client);
     46             }
     47         }
     48     }
     49 
     50     @VisibleForTesting
     51     public void stopTracking(String clientId, int requestId, int token, int numRequestsInQueue) {
     52         ClientWakelockAccountant client = getClientWakelockAccountant(clientId);
     53         long uptime = SystemClock.uptimeMillis();
     54         client.stopAttributingWakelock(requestId, token, uptime);
     55         if(client.getPendingRequestCount() == 0) {
     56             synchronized (mActiveClients) {
     57                 mActiveClients.remove(client);
     58             }
     59         }
     60         updateConcurrentRequests(numRequestsInQueue, uptime);
     61     }
     62 
     63     @VisibleForTesting
     64     public void stopTrackingAll() {
     65         long uptime = SystemClock.uptimeMillis();
     66         synchronized (mActiveClients) {
     67             for (ClientWakelockAccountant client : mActiveClients) {
     68                 client.stopAllPendingRequests(uptime);
     69             }
     70             mActiveClients.clear();
     71         }
     72     }
     73 
     74     List<ClientRequestStats> getClientRequestStats() {
     75         List<ClientRequestStats> list;
     76         long uptime = SystemClock.uptimeMillis();
     77         synchronized (mClients) {
     78             list = new ArrayList<>(mClients.size());
     79             for (String key :  mClients.keySet()) {
     80                 ClientWakelockAccountant client = mClients.get(key);
     81                 client.updatePendingRequestWakelockTime(uptime);
     82                 list.add(new ClientRequestStats(client.mRequestStats));
     83             }
     84         }
     85         return list;
     86     }
     87 
     88     private ClientWakelockAccountant getClientWakelockAccountant(String clientId) {
     89         ClientWakelockAccountant client;
     90         synchronized (mClients) {
     91             if (mClients.containsKey(clientId)) {
     92                 client = mClients.get(clientId);
     93             } else {
     94                 client = new ClientWakelockAccountant(clientId);
     95                 mClients.put(clientId, client);
     96             }
     97         }
     98         return client;
     99     }
    100 
    101     private void updateConcurrentRequests(int numRequestsInQueue, long time) {
    102         if(numRequestsInQueue != 0) {
    103             synchronized (mActiveClients) {
    104                 for (ClientWakelockAccountant cI : mActiveClients) {
    105                     cI.changeConcurrentRequests(numRequestsInQueue, time);
    106                 }
    107             }
    108         }
    109     }
    110 
    111     public boolean isClientActive(String clientId) {
    112         ClientWakelockAccountant client = getClientWakelockAccountant(clientId);
    113         synchronized (mActiveClients) {
    114             if (mActiveClients.contains(client)) {
    115                 return true;
    116             }
    117         }
    118 
    119         return false;
    120     }
    121 
    122     void dumpClientRequestTracker(PrintWriter pw) {
    123         pw.println("-------mClients---------------");
    124         synchronized (mClients) {
    125             for (String key : mClients.keySet()) {
    126                 pw.println("Client : " + key);
    127                 pw.println(mClients.get(key).toString());
    128             }
    129         }
    130     }
    131 }
    132