/*
* 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.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.os.Handler;
import android.os.IBinder;
import android.os.Message;
import android.util.AttributeSet;
import android.util.Log;
import android.util.TypedValue;
import android.view.Gravity;
import android.view.View;
import android.widget.LinearLayout;
import android.widget.TextView;
import com.android.launcher3.util.Thunk;
public class WeightWatcher extends LinearLayout {
private static final int RAM_GRAPH_RSS_COLOR = 0xFF990000;
private static final int RAM_GRAPH_PSS_COLOR = 0xFF99CC00;
private static final int TEXT_COLOR = 0xFFFFFFFF;
private static final int BACKGROUND_COLOR = 0xc0000000;
private static final int UPDATE_RATE = 5000;
private static final int MSG_START = 1;
private static final int MSG_STOP = 2;
private static final int MSG_UPDATE = 3;
static int indexOf(int[] a, int x) {
for (int i=0; i<a.length; i++) {
if (a[i] == x) return i;
}
return -1;
}
Handler mHandler = new Handler() {
@Override
public void handleMessage(Message m) {
switch (m.what) {
case MSG_START:
mHandler.sendEmptyMessage(MSG_UPDATE);
break;
case MSG_STOP:
mHandler.removeMessages(MSG_UPDATE);
break;
case MSG_UPDATE:
int[] pids = mMemoryService.getTrackedProcesses();
final int N = getChildCount();
if (pids.length != N) initViews();
else for (int i=0; i<N; i++) {
ProcessWatcher pw = ((ProcessWatcher) getChildAt(i));
if (indexOf(pids, pw.getPid()) < 0) {
initViews();
break;
}
pw.update();
}
mHandler.sendEmptyMessageDelayed(MSG_UPDATE, UPDATE_RATE);
break;
}
}
};
@Thunk MemoryTracker mMemoryService;
public WeightWatcher(Context context, AttributeSet attrs) {
super(context, attrs);
ServiceConnection connection = new ServiceConnection() {
public void onServiceConnected(ComponentName className, IBinder service) {
mMemoryService = ((MemoryTracker.MemoryTrackerInterface)service).getService();
initViews();
}
public void onServiceDisconnected(ComponentName className) {
mMemoryService = null;
}
};
context.bindService(new Intent(context, MemoryTracker.class),
connection, Context.BIND_AUTO_CREATE);
setOrientation(LinearLayout.VERTICAL);
setBackgroundColor(BACKGROUND_COLOR);
}
public void initViews() {
removeAllViews();
int[] processes = mMemoryService.getTrackedProcesses();
for (int i=0; i<processes.length; i++) {
final ProcessWatcher v = new ProcessWatcher(getContext());
v.setPid(processes[i]);
addView(v);
}
}
public WeightWatcher(Context context) {
this(context, null);
}
@Override
public void onAttachedToWindow() {
super.onAttachedToWindow();
mHandler.sendEmptyMessage(MSG_START);
}
@Override
public void onDetachedFromWindow() {
super.onDetachedFromWindow();
mHandler.sendEmptyMessage(MSG_STOP);
}
public class ProcessWatcher extends LinearLayout {
GraphView mRamGraph;
TextView mText;
int mPid;
@Thunk MemoryTracker.ProcessMemInfo mMemInfo;
public ProcessWatcher(Context context) {
this(context, null);
}
public ProcessWatcher(Context context, AttributeSet attrs) {
super(context, attrs);
final float dp = getResources().getDisplayMetrics().density;
mText = new TextView(getContext());
mText.setTextColor(TEXT_COLOR);
mText.setTextSize(TypedValue.COMPLEX_UNIT_PX, 10 * dp);
mText.setGravity(Gravity.LEFT | Gravity.CENTER_VERTICAL);
final int p = (int)(2*dp);
setPadding(p, 0, p, 0);
mRamGraph = new GraphView(getContext());
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
0,
(int)(14 * dp),
1f
);
addView(mText, params);
params.leftMargin = (int)(4*dp);
params.weight = 0f;
params.width = (int)(200 * dp);
addView(mRamGraph, params);
}
public void setPid(int pid) {
mPid = pid;
mMemInfo = mMemoryService.getMemInfo(mPid);
if (mMemInfo == null) {
Log.v("WeightWatcher", "Missing info for pid " + mPid + ", removing view: " + this);
initViews();
}
}
public int getPid() {
return mPid;
}
public String getUptimeString() {
long sec = mMemInfo.getUptime() / 1000;
StringBuilder sb = new StringBuilder();
long days = sec / 86400;
if (days > 0) {
sec -= days * 86400;
sb.append(days);
sb.append("d");
}
long hours = sec / 3600;
if (hours > 0) {
sec -= hours * 3600;
sb.append(hours);
sb.append("h");
}
long mins = sec / 60;
if (mins > 0) {
sec -= mins * 60;
sb.append(mins);
sb.append("m");
}
sb.append(sec);
sb.append("s");
return sb.toString();
}
public void update() {
//Log.v("WeightWatcher.ProcessWatcher",
// "MSG_UPDATE pss=" + mMemInfo.currentPss);
mText.setText("(" + mPid
+ (mPid == android.os.Process.myPid()
? "/A" // app
: "/S") // service
+ ") up " + getUptimeString()
+ " P=" + mMemInfo.currentPss
+ " U=" + mMemInfo.currentUss
);
mRamGraph.invalidate();
}
public class GraphView extends View {
Paint pssPaint, ussPaint, headPaint;
public GraphView(Context context, AttributeSet attrs) {
super(context, attrs);
pssPaint = new Paint();
pssPaint.setColor(RAM_GRAPH_PSS_COLOR);
ussPaint = new Paint();
ussPaint.setColor(RAM_GRAPH_RSS_COLOR);
headPaint = new Paint();
headPaint.setColor(Color.WHITE);
}
public GraphView(Context context) {
this(context, null);
}
@Override
public void onDraw(Canvas c) {
int w = c.getWidth();
int h = c.getHeight();
if (mMemInfo == null) return;
final int N = mMemInfo.pss.length;
final float barStep = (float) w / N;
final float barWidth = Math.max(1, barStep);
final float scale = (float) h / mMemInfo.max;
int i;
float x;
for (i=0; i<N; i++) {
x = i * barStep;
c.drawRect(x, h - scale * mMemInfo.pss[i], x + barWidth, h, pssPaint);
c.drawRect(x, h - scale * mMemInfo.uss[i], x + barWidth, h, ussPaint);
}
x = mMemInfo.head * barStep;
c.drawRect(x, 0, x + barWidth, h, headPaint);
}
}
}
}