| /* |
| * Copyright (C) 2022 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.libcore.regression; |
| |
| import android.perftests.utils.BenchmarkState; |
| import android.perftests.utils.PerfStatusReporter; |
| import android.test.suitebuilder.annotation.LargeTest; |
| |
| import junitparams.JUnitParamsRunner; |
| import junitparams.Parameters; |
| |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| |
| import java.nio.charset.StandardCharsets; |
| import java.util.Arrays; |
| import java.util.Collection; |
| |
| @RunWith(JUnitParamsRunner.class) |
| @LargeTest |
| public class StringToBytesPerfTest { |
| @Rule public PerfStatusReporter mPerfStatusReporter = new PerfStatusReporter(); |
| |
| enum StringLengths { |
| EMPTY(""), |
| L_16(makeString(16)), |
| L_64(makeString(64)), |
| L_256(makeString(256)), |
| L_512(makeString(512)), |
| A_16(makeAsciiString(16)), |
| A_64(makeAsciiString(64)), |
| A_256(makeAsciiString(256)), |
| A_512(makeAsciiString(512)); |
| |
| private final String mValue; |
| |
| StringLengths(String s) { |
| this.mValue = s; |
| } |
| } |
| |
| public static Collection<Object[]> getData() { |
| return Arrays.asList( |
| new Object[][] { |
| {StringLengths.EMPTY}, |
| {StringLengths.L_16}, |
| {StringLengths.L_64}, |
| {StringLengths.L_256}, |
| {StringLengths.L_512}, |
| {StringLengths.A_16}, |
| {StringLengths.A_64}, |
| {StringLengths.A_256}, |
| {StringLengths.A_512} |
| }); |
| } |
| |
| private static String makeString(int length) { |
| char[] chars = new char[length]; |
| for (int i = 0; i < length; ++i) { |
| chars[i] = (char) i; |
| } |
| return new String(chars); |
| } |
| |
| private static String makeAsciiString(int length) { |
| char[] chars = new char[length]; |
| for (int i = 0; i < length; ++i) { |
| chars[i] = ((i & 0x7f) != 0) ? (char) (i & 0x7f) : '?'; |
| } |
| return new String(chars); |
| } |
| |
| @Test |
| @Parameters(method = "getData") |
| public void timeGetBytesUtf8(StringLengths stringLengths) { |
| BenchmarkState state = mPerfStatusReporter.getBenchmarkState(); |
| while (state.keepRunning()) { |
| stringLengths.mValue.getBytes(StandardCharsets.UTF_8); |
| } |
| } |
| |
| @Test |
| @Parameters(method = "getData") |
| public void timeGetBytesIso88591(StringLengths stringLengths) { |
| BenchmarkState state = mPerfStatusReporter.getBenchmarkState(); |
| while (state.keepRunning()) { |
| stringLengths.mValue.getBytes(StandardCharsets.ISO_8859_1); |
| } |
| } |
| |
| @Test |
| @Parameters(method = "getData") |
| public void timeGetBytesAscii(StringLengths stringLengths) { |
| BenchmarkState state = mPerfStatusReporter.getBenchmarkState(); |
| while (state.keepRunning()) { |
| stringLengths.mValue.getBytes(StandardCharsets.US_ASCII); |
| } |
| } |
| } |