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8367271: Add parsing tests to DateFormat JMH benchmark

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Reviewed-by: naoto
This commit is contained in:
Justin Lu 2025-09-12 16:31:03 +00:00
parent 44aad0786b
commit aeffce7c22
1 changed files with 39 additions and 7 deletions
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46
test/micro/org/openjdk/bench/java/text/DateFormatterBench.java → test/micro/org/openjdk/bench/java/text/SimpleDateFormatterBench.java
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@ -1,4 +1,5 @@
/*
* Copyright (c) 2025, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2024, Alibaba Group Holding Limited. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
@ -38,8 +39,9 @@ import org.openjdk.jmh.runner.options.Options;
import org.openjdk.jmh.runner.options.OptionsBuilder;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;
import java.util.concurrent.TimeUnit;
@BenchmarkMode(Mode.Throughput)
@ -48,32 +50,62 @@ import java.util.concurrent.TimeUnit;
@Measurement(iterations = 5, time = 1)
@Fork(3)
@State(Scope.Benchmark)
public class DateFormatterBench {
public class SimpleDateFormatterBench {
private Date date;
private Object objDate;
private String dateStr;
private String timeStr;
private static final String DATE_PATTERN = "EEEE, MMMM d, y";
private static final String TIME_PATTERN = "h:mm:ss a zzzz";
// Use non-factory methods w/ pattern to ensure test data can be round
// tripped and guarantee no re-use of the same instance
private DateFormat dateFormat = new SimpleDateFormat(DATE_PATTERN);
private DateFormat timeFormat = new SimpleDateFormat(TIME_PATTERN);
@Setup
public void setup() {
date = new Date();
objDate = new Date();
// Generate the strings for parsing using dedicated separate instances
dateStr = new SimpleDateFormat(DATE_PATTERN).format(date);
timeStr = new SimpleDateFormat(TIME_PATTERN).format(date);
}
private DateFormat dateFormat = DateFormat.getDateInstance(DateFormat.FULL, Locale.ENGLISH);
@Benchmark
public String testTimeFormat() {
return timeFormat.format(date);
}
@Benchmark
public String testFormatDate() {
public String testTimeFormatObject() {
return timeFormat.format(objDate);
}
@Benchmark
public String testDateFormat() {
return dateFormat.format(date);
}
@Benchmark
public String testFormatObject() {
public String testDateFormatObject() {
return dateFormat.format(objDate);
}
@Benchmark
public Date testDateParse() throws ParseException {
return dateFormat.parse(dateStr);
}
@Benchmark
public Date testTimeParse() throws ParseException {
return timeFormat.parse(timeStr);
}
public static void main(String... args) throws Exception {
Options opts = new OptionsBuilder().include(DateFormatterBench.class.getSimpleName()).shouldDoGC(true).build();
Options opts = new OptionsBuilder().include(org.openjdk.bench.java.text.SimpleDateFormatterBench.class.getSimpleName()).shouldDoGC(true).build();
new Runner(opts).run();
}
}