russell@unturf.com
0a580b313d
Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com Patches, unit tests, benchmarks, whitepaper, and outreach briefs. Public domain — no copyright claimed. Use freely.
129 lines
4.2 KiB
Java
129 lines
4.2 KiB
Java
/*
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* Copyright (c) 2001, 2025, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/**
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* @test
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* @bug 4407042
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* @summary Make sure that cloned SimpleDateFormat objects work
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* independently in multiple threads.
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* @library /java/text/testlib
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* @run junit Bug4407042
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*/
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import org.junit.jupiter.api.Assumptions;
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import org.junit.jupiter.api.Test;
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import java.io.*;
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import java.text.*;
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import java.util.*;
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public class Bug4407042 {
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static final String TIME_STRING = "2000/11/18 00:01:00";
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static final long UTC_LONG = 974534460000L;
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static SimpleDateFormat masterFormat = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");
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static boolean runrun = true;
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static int duration = 10;
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@Test
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void test() {
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Locale locale = Locale.getDefault();
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Assumptions.assumeTrue(TestUtils.usesAsciiDigits(locale),
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locale + " does not use ASCII digits");
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Assumptions.assumeTrue(TestUtils.usesGregorianCalendar(locale),
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locale + " does not use a Gregorian calendar");
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masterFormat.setTimeZone(TimeZone.getTimeZone("America/Los_Angeles"));
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DateParseThread d1 = new DateParseThread();
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DateFormatThread d2 = new DateFormatThread();
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d1.start();
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d2.start();
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int n = Thread.activeCount();
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boolean failed = false;
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for (int i = 0; i < duration; i++) {
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try {
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Thread.sleep(1000);
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if (Thread.activeCount() != n) {
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failed = true;
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break;
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}
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} catch (InterruptedException e) {
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}
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}
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runrun = false;
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try {
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d1.join();
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d2.join();
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} catch (InterruptedException e) {
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}
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if (failed) {
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throw new RuntimeException("Failed");
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}
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}
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synchronized static SimpleDateFormat getFormatter() {
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return (SimpleDateFormat) masterFormat.clone();
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}
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static class DateParseThread extends Thread {
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public void run() {
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SimpleDateFormat sdf = getFormatter();
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Calendar cal = null;
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try {
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int i = 0;
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while (runrun) {
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Date date =sdf.parse(TIME_STRING);
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long t = date.getTime();
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i++;
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if (t != UTC_LONG) {
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throw new RuntimeException("Parse Error: " + i +
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" (" + sdf.format(date) + ") " + t +
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" != " + UTC_LONG);
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}
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}
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} catch (ParseException e) {
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e.printStackTrace();
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throw new RuntimeException("Parse Error");
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}
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}
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}
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static class DateFormatThread extends Thread {
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public void run () {
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SimpleDateFormat sdf = getFormatter();
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Calendar cal = null;
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int i = 0;
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while (runrun) {
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i++;
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String s = sdf.format(new Date(UTC_LONG));
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if (!s.equals(TIME_STRING)) {
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throw new RuntimeException("Format Error: " + i + " " +
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s + " != " + TIME_STRING);
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}
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}
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}
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}
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}
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