| /* |
| * 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 com.android.internal.util; |
| |
| import android.perftests.utils.BenchmarkState; |
| import android.perftests.utils.PerfStatusReporter; |
| |
| import androidx.test.filters.LargeTest; |
| import androidx.test.runner.AndroidJUnit4; |
| |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| |
| import java.io.BufferedInputStream; |
| import java.io.BufferedOutputStream; |
| import java.io.ByteArrayInputStream; |
| import java.io.ByteArrayOutputStream; |
| import java.io.DataInput; |
| import java.io.DataInputStream; |
| import java.io.DataOutput; |
| import java.io.DataOutputStream; |
| import java.io.IOException; |
| |
| @LargeTest |
| @RunWith(AndroidJUnit4.class) |
| public class FastDataPerfTest { |
| @Rule |
| public PerfStatusReporter mPerfStatusReporter = new PerfStatusReporter(); |
| |
| private static final int OUTPUT_SIZE = 64000; |
| private static final int BUFFER_SIZE = 4096; |
| |
| @Test |
| public void timeWrite_Upstream() throws IOException { |
| final ByteArrayOutputStream os = new ByteArrayOutputStream(OUTPUT_SIZE); |
| final BenchmarkState state = mPerfStatusReporter.getBenchmarkState(); |
| while (state.keepRunning()) { |
| os.reset(); |
| final BufferedOutputStream bos = new BufferedOutputStream(os, BUFFER_SIZE); |
| final DataOutput out = new DataOutputStream(bos); |
| doWrite(out); |
| bos.flush(); |
| } |
| } |
| |
| @Test |
| public void timeWrite_Local() throws IOException { |
| final ByteArrayOutputStream os = new ByteArrayOutputStream(OUTPUT_SIZE); |
| final BenchmarkState state = mPerfStatusReporter.getBenchmarkState(); |
| while (state.keepRunning()) { |
| os.reset(); |
| final FastDataOutput out = new FastDataOutput(os, BUFFER_SIZE); |
| doWrite(out); |
| out.flush(); |
| } |
| } |
| |
| @Test |
| public void timeRead_Upstream() throws Exception { |
| final ByteArrayInputStream is = new ByteArrayInputStream(doWrite()); |
| final BenchmarkState state = mPerfStatusReporter.getBenchmarkState(); |
| while (state.keepRunning()) { |
| is.reset(); |
| final BufferedInputStream bis = new BufferedInputStream(is, BUFFER_SIZE); |
| final DataInput in = new DataInputStream(bis); |
| doRead(in); |
| } |
| } |
| |
| @Test |
| public void timeRead_Local() throws Exception { |
| final ByteArrayInputStream is = new ByteArrayInputStream(doWrite()); |
| final BenchmarkState state = mPerfStatusReporter.getBenchmarkState(); |
| while (state.keepRunning()) { |
| is.reset(); |
| final DataInput in = new FastDataInput(is, BUFFER_SIZE); |
| doRead(in); |
| } |
| } |
| |
| /** |
| * Since each iteration is around 64 bytes, we need to iterate many times to |
| * exercise the buffer logic. |
| */ |
| private static final int REPEATS = 1000; |
| |
| private static byte[] doWrite() throws IOException { |
| final ByteArrayOutputStream os = new ByteArrayOutputStream(OUTPUT_SIZE); |
| final DataOutput out = new DataOutputStream(os); |
| doWrite(out); |
| return os.toByteArray(); |
| } |
| |
| private static void doWrite(DataOutput out) throws IOException { |
| for (int i = 0; i < REPEATS; i++) { |
| out.writeByte(Byte.MAX_VALUE); |
| out.writeShort(Short.MAX_VALUE); |
| out.writeInt(Integer.MAX_VALUE); |
| out.writeLong(Long.MAX_VALUE); |
| out.writeFloat(Float.MAX_VALUE); |
| out.writeDouble(Double.MAX_VALUE); |
| out.writeUTF("com.example.typical_package_name"); |
| } |
| } |
| |
| private static void doRead(DataInput in) throws IOException { |
| for (int i = 0; i < REPEATS; i++) { |
| in.readByte(); |
| in.readShort(); |
| in.readInt(); |
| in.readLong(); |
| in.readFloat(); |
| in.readDouble(); |
| in.readUTF(); |
| } |
| } |
| } |