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Commit a0bf0ccc authored by Felka Chang's avatar Felka Chang
Browse files

Add Benchmark for PackageManager.getResourcesForApplication 

Add the benchmark for anwsering the performance issue.
* the cost of the createContextAsUser
* the comparsion between *AsUser and createContextAsUser

Test: atest CorePerfTests:android.content.pm.PackageManagerBenchmark
Bug: 171370490
Change-Id: I7da6d4127520c1132c6050472a0c1ba462ab03d3
parent faf7e4a0

apct-tests/perftests/core/src/android/content/pm/PackageManagerBenchmark.java

0 → 100644
+69 −0
Original line number Diff line number Diff line 
/*

 * Copyright (C) 2020 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 android.content.pm;



import android.content.Context;

import android.os.UserHandle;

import android.perftests.utils.BenchmarkState;

import android.perftests.utils.PerfStatusReporter;



import androidx.test.platform.app.InstrumentationRegistry;

import androidx.test.runner.AndroidJUnit4;



import org.junit.Rule;

import org.junit.Test;

import org.junit.runner.RunWith;



@RunWith(AndroidJUnit4.class)

public class PackageManagerBenchmark {

    @Rule

    public PerfStatusReporter mPerfStatusReporter = new PerfStatusReporter();



    @Test

    public void createUserContextBenchmark() {

        Context context = InstrumentationRegistry.getInstrumentation().getTargetContext();

        final BenchmarkState state = mPerfStatusReporter.getBenchmarkState();



        while (state.keepRunning()) {

            context.createContextAsUser(UserHandle.SYSTEM, /* flags */ 0);

        }

    }



    @Test

    public void getResourcesForApplication_byStarAsUser()

            throws PackageManager.NameNotFoundException {

        Context context = InstrumentationRegistry.getInstrumentation().getTargetContext();

        final BenchmarkState state = mPerfStatusReporter.getBenchmarkState();



        while (state.keepRunning()) {

            context.getPackageManager().getResourcesForApplicationAsUser(context.getPackageName(),

                    UserHandle.USER_SYSTEM);

        }

    }



    @Test

    public void getResourcesApplication_byCreateContextAsUser()

            throws PackageManager.NameNotFoundException {

        Context context = InstrumentationRegistry.getInstrumentation().getTargetContext();

        final BenchmarkState state = mPerfStatusReporter.getBenchmarkState();



        while (state.keepRunning()) {

            context.createContextAsUser(UserHandle.SYSTEM, /* flags */ 0).getPackageManager()

                    .getResourcesForApplication(context.getPackageName());

        }

    }

}