| /* |
| * Copyright (C) 2016 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 benchmarks.regression; |
| |
| import android.icu.text.TimeZoneNames; |
| |
| import java.text.DateFormatSymbols; |
| import java.text.ParseException; |
| import java.text.SimpleDateFormat; |
| import java.util.Arrays; |
| import java.util.Date; |
| import java.util.Locale; |
| import java.util.TimeZone; |
| |
| /** |
| * Benchmark for java.text.SimpleDateFormat. This tests common formatting, parsing and creation |
| * operations with a specific focus on TimeZone handling. |
| */ |
| public class SimpleDateFormatBenchmark { |
| public void time_createFormatWithTimeZone(int reps) { |
| for (int i = 0; i < reps; i++) { |
| SimpleDateFormat sdf = new SimpleDateFormat("yyyy.MM.dd z"); |
| } |
| } |
| |
| public void time_parseWithTimeZoneShort(int reps) throws ParseException { |
| SimpleDateFormat sdf = new SimpleDateFormat("yyyy.MM.dd z"); |
| for (int i = 0; i < reps; i++) { |
| sdf.parse("2000.01.01 PST"); |
| } |
| } |
| |
| public void time_parseWithTimeZoneLong(int reps) throws ParseException { |
| SimpleDateFormat sdf = new SimpleDateFormat("yyyy.MM.dd zzzz"); |
| for (int i = 0; i < reps; i++) { |
| sdf.parse("2000.01.01 Pacific Standard Time"); |
| } |
| } |
| |
| public void time_parseWithoutTimeZone(int reps) throws ParseException { |
| SimpleDateFormat sdf = new SimpleDateFormat("yyyy.MM.dd"); |
| for (int i = 0; i < reps; i++) { |
| sdf.parse("2000.01.01"); |
| } |
| } |
| |
| public void time_createAndParseWithTimeZoneShort(int reps) throws ParseException { |
| for (int i = 0; i < reps; i++) { |
| SimpleDateFormat sdf = new SimpleDateFormat("yyyy.MM.dd z"); |
| sdf.parse("2000.01.01 PST"); |
| } |
| } |
| |
| public void time_createAndParseWithTimeZoneLong(int reps) throws ParseException { |
| for (int i = 0; i < reps; i++) { |
| SimpleDateFormat sdf = new SimpleDateFormat("yyyy.MM.dd zzzz"); |
| sdf.parse("2000.01.01 Pacific Standard Time"); |
| } |
| } |
| |
| public void time_formatWithTimeZoneShort(int reps) { |
| SimpleDateFormat sdf = new SimpleDateFormat("yyyy.MM.dd z"); |
| for (int i = 0; i < reps; i++) { |
| sdf.format(new Date()); |
| } |
| } |
| |
| public void time_formatWithTimeZoneLong(int reps) { |
| SimpleDateFormat sdf = new SimpleDateFormat("yyyy.MM.dd zzzz"); |
| for (int i = 0; i < reps; i++) { |
| sdf.format(new Date()); |
| } |
| } |
| |
| /** |
| * Times first-time execution to measure effects of initial loading of data that's lost in |
| * full caliper benchmarks. |
| */ |
| public static void main(String[] args) throws ParseException { |
| long start, end; |
| |
| Locale locale = Locale.GERMAN; |
| start = System.nanoTime(); |
| SimpleDateFormat sdf = new SimpleDateFormat("yyyy.MM.dd zzzz", locale); |
| end = System.nanoTime(); |
| System.out.printf("Creating first SDF: %,d ns\n", end-start); |
| |
| // N code had special cases for currently-set and for default timezone. We want to measure |
| // the generic case. |
| sdf.setTimeZone(TimeZone.getTimeZone("Hongkong")); |
| |
| start = System.nanoTime(); |
| sdf.parse("2000.1.1 Kubanische Normalzeit"); |
| end = System.nanoTime(); |
| System.out.printf("First parse: %,d ns\n", end-start); |
| |
| start = System.nanoTime(); |
| sdf.format(new Date()); |
| end = System.nanoTime(); |
| System.out.printf("First format: %,d ns\n", end-start); |
| } |
| } |