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/*
* Copyright (C) 2012 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.tests.memoryusage;
import android.app.ActivityManager;
import android.app.ActivityManager.ProcessErrorStateInfo;
import android.app.ActivityManager.RunningAppProcessInfo;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
import android.content.pm.ResolveInfo;
import android.os.Bundle;
import android.os.Debug.MemoryInfo;
import android.test.InstrumentationTestCase;
import android.util.Log;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* This test is intended to measure the amount of memory applications use when
* they start. Names of the applications are passed in command line, and the
* test starts each application, waits until its memory usage is stabilized and
* reports the total PSS in kilobytes of each processes.
* The instrumentation expects the following key to be passed on the command line:
* apps - A list of applications to start and their corresponding result keys
* in the following format:
* -e apps <app name>^<result key>|<app name>^<result key>
*/
public class MemoryUsageTest extends InstrumentationTestCase {
private static final int SLEEP_TIME = 1000;
private static final int THRESHOLD = 1024;
private static final int MAX_ITERATIONS = 10;
private static final int MIN_ITERATIONS = 4;
private static final String TAG = "MemoryUsageInstrumentation";
private static final String KEY_APPS = "apps";
private Map<String, Intent> mNameToIntent;
private Map<String, String> mNameToProcess;
private Map<String, String> mNameToResultKey;
public void testMemory() {
MemoryUsageInstrumentation instrumentation =
(MemoryUsageInstrumentation) getInstrumentation();
Bundle args = instrumentation.getBundle();
createMappings();
parseArgs(args);
Bundle results = new Bundle();
for (String app : mNameToResultKey.keySet()) {
String processName;
try {
processName = startApp(app);
measureMemory(app, processName, results);
} catch (NameNotFoundException e) {
Log.i(TAG, "Application " + app + " not found");
}
}
instrumentation.sendStatus(0, results);
}
private void parseArgs(Bundle args) {
mNameToResultKey = new HashMap<String, String>();
String appList = args.getString(KEY_APPS);
if (appList == null)
return;
String appNames[] = appList.split("\\|");
for (String pair : appNames) {
String[] parts = pair.split("\\^");
if (parts.length != 2) {
Log.e(TAG, "The apps key is incorectly formatted");
fail();
}
mNameToResultKey.put(parts[0], parts[1]);
}
}
private void createMappings() {
mNameToIntent = new HashMap<String, Intent>();
mNameToProcess = new HashMap<String, String>();
PackageManager pm = getInstrumentation().getContext()
.getPackageManager();
Intent intentToResolve = new Intent(Intent.ACTION_MAIN);
intentToResolve.addCategory(Intent.CATEGORY_LAUNCHER);
List<ResolveInfo> ris = pm.queryIntentActivities(intentToResolve, 0);
if (ris == null || ris.isEmpty()) {
Log.i(TAG, "Could not find any apps");
} else {
for (ResolveInfo ri : ris) {
Log.i(TAG, "Name: " + ri.loadLabel(pm).toString()
+ " package: " + ri.activityInfo.packageName
+ " name: " + ri.activityInfo.name);
Intent startIntent = new Intent(intentToResolve);
startIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK
| Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
startIntent.setClassName(ri.activityInfo.packageName,
ri.activityInfo.name);
mNameToIntent.put(ri.loadLabel(pm).toString(), startIntent);
mNameToProcess.put(ri.loadLabel(pm).toString(),
ri.activityInfo.processName);
}
}
}
private String startApp(String appName) throws NameNotFoundException {
Log.i(TAG, "Starting " + appName);
if (!mNameToProcess.containsKey(appName))
throw new NameNotFoundException("Could not find: " + appName);
String process = mNameToProcess.get(appName);
Intent startIntent = mNameToIntent.get(appName);
getInstrumentation().getContext().startActivity(startIntent);
return process;
}
private void measureMemory(String appName, String processName,
Bundle results) {
List<Integer> pssData = new ArrayList<Integer>();
int pss = 0;
int iteration = 0;
while (iteration < MAX_ITERATIONS) {
sleep();
pss = getPss(processName);
Log.i(TAG, appName + "=" + pss);
if (pss < 0) {
reportError(appName, processName, results);
return;
}
pssData.add(pss);
if (iteration >= MIN_ITERATIONS && stabilized(pssData)) {
results.putInt(mNameToResultKey.get(appName), pss);
return;
}
iteration++;
}
Log.w(TAG, appName + " memory usage did not stabilize");
results.putInt(mNameToResultKey.get(appName), average(pssData));
}
private int average(List<Integer> pssData) {
int sum = 0;
for (int sample : pssData) {
sum += sample;
}
return sum / pssData.size();
}
private boolean stabilized(List<Integer> pssData) {
if (pssData.size() < 3)
return false;
int diff1 = Math.abs(pssData.get(pssData.size() - 1) - pssData.get(pssData.size() - 2));
int diff2 = Math.abs(pssData.get(pssData.size() - 2) - pssData.get(pssData.size() - 3));
Log.i(TAG, "diff1=" + diff1 + " diff2=" + diff2);
return (diff1 + diff2) < THRESHOLD;
}
private void sleep() {
try {
Thread.sleep(SLEEP_TIME);
} catch (InterruptedException e) {
// ignore
}
}
private void reportError(String appName, String processName, Bundle results) {
ActivityManager am = (ActivityManager) getInstrumentation()
.getContext().getSystemService(Context.ACTIVITY_SERVICE);
List<ProcessErrorStateInfo> crashes = am.getProcessesInErrorState();
if (crashes != null) {
for (ProcessErrorStateInfo crash : crashes) {
if (!crash.processName.equals(processName))
continue;
Log.w(TAG, appName + " crashed: " + crash.shortMsg);
results.putString(mNameToResultKey.get(appName), crash.shortMsg);
return;
}
}
results.putString(mNameToResultKey.get(appName),
"Crashed for unknown reason");
Log.w(TAG, appName
+ " not found in process list, most likely it is crashed");
}
private int getPss(String processName) {
ActivityManager am = (ActivityManager) getInstrumentation()
.getContext().getSystemService(Context.ACTIVITY_SERVICE);
List<RunningAppProcessInfo> apps = am.getRunningAppProcesses();
for (RunningAppProcessInfo proc : apps) {
if (!proc.processName.equals(processName)) {
continue;
}
int[] pids = {
proc.pid };
MemoryInfo meminfo = am.getProcessMemoryInfo(pids)[0];
return meminfo.getTotalPss();
}
return -1;
}
}
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