1 /* 2 * Copyright (c) 2001, 2016, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /** 25 * @test 26 * @bug 4407042 27 * @summary Make sure that cloned SimpleDateFormat objects work 28 * independently in multiple threads. 29 * @library /java/text/testlib 30 * @run main Bug4407042 10 31 */ 32 33 import java.io.*; 34 import java.text.*; 35 import java.util.*; 36 37 // Usage: java Bug4407042 [duration] 38 public class Bug4407042 { 39 40 static final String TIME_STRING = "2000/11/18 00:01:00"; 41 static final long UTC_LONG = 974534460000L; 42 static SimpleDateFormat masterFormat = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss"); 43 static boolean runrun = true; 44 static int duration = 100; 45 test()46 void test() { 47 Locale locale = Locale.getDefault(); 48 if (!TestUtils.usesAsciiDigits(locale) 49 || !TestUtils.usesGregorianCalendar(locale)) { 50 System.out.println("Skipping this test because locale is " + locale); 51 return; 52 } 53 54 masterFormat.setTimeZone(TimeZone.getTimeZone("America/Los_Angeles")); 55 DateParseThread d1 = new DateParseThread(); 56 DateFormatThread d2 = new DateFormatThread(); 57 d1.start(); 58 d2.start(); 59 int n = Thread.activeCount(); 60 boolean failed = false; 61 62 for (int i = 0; i < duration; i++) { 63 try { 64 Thread.sleep(1000); 65 if (Thread.activeCount() != n) { 66 failed = true; 67 break; 68 } 69 } catch (InterruptedException e) { 70 } 71 } 72 runrun = false; 73 try { 74 d1.join(); 75 d2.join(); 76 } catch (InterruptedException e) { 77 } 78 if (failed) { 79 throw new RuntimeException("Failed"); 80 } 81 } 82 getFormatter()83 synchronized static SimpleDateFormat getFormatter() { 84 return (SimpleDateFormat) masterFormat.clone(); 85 } 86 87 static class DateParseThread extends Thread { run()88 public void run() { 89 SimpleDateFormat sdf = getFormatter(); 90 Calendar cal = null; 91 92 try { 93 int i = 0; 94 while (runrun) { 95 Date date =sdf.parse(TIME_STRING); 96 long t = date.getTime(); 97 i++; 98 if (t != UTC_LONG) { 99 throw new RuntimeException("Parse Error: " + i + 100 " (" + sdf.format(date) + ") " + t + 101 " != " + UTC_LONG); 102 } 103 } 104 } catch (ParseException e) { 105 e.printStackTrace(); 106 throw new RuntimeException("Parse Error"); 107 } 108 } 109 } 110 111 static class DateFormatThread extends Thread { run()112 public void run () { 113 SimpleDateFormat sdf = getFormatter(); 114 Calendar cal = null; 115 116 int i = 0; 117 while (runrun) { 118 i++; 119 String s = sdf.format(new Date(UTC_LONG)); 120 if (!s.equals(TIME_STRING)) { 121 throw new RuntimeException("Format Error: " + i + " " + 122 s + " != " + TIME_STRING); 123 } 124 } 125 } 126 } 127 main(String[] args)128 public static void main (String[] args) { 129 if (args.length == 1) { 130 duration = Math.max(10, Integer.parseInt(args[0])); 131 } 132 new Bug4407042().test(); 133 } 134 } 135