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/*
* Copyright (C) 2019 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.startop.test;
import android.app.Activity;
import android.content.ComponentName;
import android.content.Context;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Trace;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.GridLayout;
import android.widget.TextView;
import java.util.Arrays;
class Benchmark {
// Time limit to run benchmarks in seconds
public static final int TIME_LIMIT = 5;
public Benchmark(ViewGroup parent, CharSequence name, Runnable thunk) {
Context context = parent.getContext();
Button button = new Button(context);
TextView mean = new TextView(context);
TextView stdev = new TextView(context);
button.setText(name);
mean.setText("");
stdev.setText("");
button.setOnClickListener((_button) -> {
mean.setText("Running...");
stdev.setText("");
new AsyncTask() {
double resultMean = 0;
double resultStdev = 0;
@Override
protected Object doInBackground(Object... _args) {
long startTime = System.nanoTime();
int count = 0;
// Run benchmark
while (true) {
long elapsed = -System.nanoTime();
thunk.run();
elapsed += System.nanoTime();
count++;
double elapsedVariance = (double) elapsed - resultMean;
resultMean += elapsedVariance / count;
resultStdev += elapsedVariance * ((double) elapsed - resultMean);
if (System.nanoTime() - startTime > TIME_LIMIT * 1e9) {
break;
}
}
resultStdev = Math.sqrt(resultStdev / (count - 1));
return null;
}
@Override
protected void onPostExecute(Object _result) {
mean.setText(String.format("%.3f", resultMean / 1e6));
stdev.setText(String.format("%.3f", resultStdev / 1e6));
}
}.execute(new Object());
});
parent.addView(button);
parent.addView(mean);
parent.addView(stdev);
}
}
public class SystemServerBenchmarkActivity extends Activity {
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.system_server_benchmark_page);
GridLayout benchmarkList = findViewById(R.id.benchmark_list);
new Benchmark(benchmarkList, "Empty", () -> {
});
PackageManager pm = getPackageManager();
new Benchmark(benchmarkList, "getInstalledApplications", () -> {
pm.getInstalledApplications(PackageManager.MATCH_SYSTEM_ONLY);
});
new Benchmark(benchmarkList, "getInstalledPackages", () -> {
pm.getInstalledPackages(PackageManager.GET_ACTIVITIES);
});
new Benchmark(benchmarkList, "getPackageInfo", () -> {
try {
pm.getPackageInfo("com.android.startop.test", 0);
} catch (NameNotFoundException e) {
throw new RuntimeException(e);
}
});
new Benchmark(benchmarkList, "getApplicationInfo", () -> {
try {
pm.getApplicationInfo("com.android.startop.test", 0);
} catch (NameNotFoundException e) {
throw new RuntimeException(e);
}
});
try {
ApplicationInfo app = pm.getApplicationInfo("com.android.startop.test", 0);
new Benchmark(benchmarkList, "getResourcesForApplication", () -> {
try {
pm.getResourcesForApplication(app);
} catch (NameNotFoundException e) {
throw new RuntimeException(e);
}
});
} catch (NameNotFoundException e) {
throw new RuntimeException(e);
}
ComponentName component = new ComponentName(this, this.getClass());
new Benchmark(benchmarkList, "getActivityInfo", () -> {
try {
pm.getActivityInfo(component, PackageManager.GET_META_DATA);
} catch (NameNotFoundException e) {
throw new RuntimeException(e);
}
});
}
}
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