1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
|
/*
* Copyright (C) 2013 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.launcher3;
import android.app.ActivityManager;
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.os.*;
import android.util.Log;
import android.util.LongSparseArray;
import java.util.ArrayList;
public class MemoryTracker extends Service {
public static final String TAG = MemoryTracker.class.getSimpleName();
public static final String ACTION_START_TRACKING = "com.android.launcher3.action.START_TRACKING";
private static final long UPDATE_RATE = 5000;
private static final int MSG_START = 1;
private static final int MSG_STOP = 2;
private static final int MSG_UPDATE = 3;
public static class ProcessMemInfo {
public int pid;
public String name;
public long currentPss, currentUss;
public long[] pss = new long[256];
public long[] uss = new long[256];
//= new Meminfo[(int) (30 * 60 / (UPDATE_RATE / 1000))]; // 30 minutes
public long max = 1;
public int head = 0;
public ProcessMemInfo(int pid, String name) {
this.pid = pid;
this.name = name;
}
};
public final LongSparseArray<ProcessMemInfo> mData = new LongSparseArray<ProcessMemInfo>();
public final ArrayList<Long> mPids = new ArrayList<Long>();
private int[] mPidsArray = new int[0];
Handler mHandler = new Handler() {
@Override
public void handleMessage(Message m) {
switch (m.what) {
case MSG_START:
mHandler.removeMessages(MSG_UPDATE);
mHandler.sendEmptyMessage(MSG_UPDATE);
break;
case MSG_STOP:
mHandler.removeMessages(MSG_UPDATE);
break;
case MSG_UPDATE:
update();
mHandler.removeMessages(MSG_UPDATE);
mHandler.sendEmptyMessageDelayed(MSG_UPDATE, UPDATE_RATE);
break;
}
}
};
ActivityManager mAm;
public ProcessMemInfo getMemInfo(int pid) {
return mData.get(pid);
}
public int[] getTrackedProcesses() {
return mPidsArray;
}
public void startTrackingProcess(int pid, String name) {
mPids.add(new Long(pid));
final int N = mPids.size();
mPidsArray = new int[N];
StringBuffer sb = new StringBuffer("Now tracking processes: ");
for (int i=0; i<N; i++) {
final int p = mPids.get(i).intValue();
mPidsArray[i] = p;
sb.append(p); sb.append(" ");
}
mData.put(pid, new ProcessMemInfo(pid, name));
Log.v(TAG, sb.toString());
}
void update() {
Debug.MemoryInfo[] dinfos = mAm.getProcessMemoryInfo(mPidsArray);
for (int i=0; i<dinfos.length; i++) {
Debug.MemoryInfo dinfo = dinfos[i];
final long pid = mPids.get(i).intValue();
final ProcessMemInfo info = mData.get(pid);
info.head = (info.head+1) % info.pss.length;
info.pss[info.head] = info.currentPss = dinfo.getTotalPss();
info.uss[info.head] = info.currentUss = dinfo.getTotalPrivateDirty();
if (info.currentPss > info.max) info.max = info.currentPss;
if (info.currentUss > info.max) info.max = info.currentUss;
//Log.v(TAG, "update: pid " + pid + " pss=" + info.currentPss + " uss=" + info.currentUss);
}
// XXX: notify listeners
}
@Override
public void onCreate() {
mAm = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);
}
@Override
public void onDestroy() {
mHandler.sendEmptyMessage(MSG_STOP);
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
Log.i(TAG, "Received start id " + startId + ": " + intent);
if (ACTION_START_TRACKING.equals(intent.getAction())) {
final Uri uri = intent.getData();
final int pid = intent.getIntExtra("pid", -1);
final String name = intent.getStringExtra("name");
startTrackingProcess(pid, name);
}
mHandler.sendEmptyMessage(MSG_START);
return START_STICKY;
}
public class MemoryTrackerInterface extends Binder {
MemoryTracker getService() {
return MemoryTracker.this;
}
}
private final IBinder mBinder = new MemoryTrackerInterface();
public IBinder onBind(Intent intent) {
mHandler.sendEmptyMessage(MSG_START);
return mBinder;
}
}
|
