1 /*
   2  * Copyright (c) 2007, 2014, 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 6571655 6571881 6574585 6571297 8004807
  27  * @summary Test various args to task scheduling methods
  28  * @run main/othervm Args
  29  */
  30 
  31 import java.util.*;
  32 import java.util.concurrent.*;
  33 
  34 public class Args {
  35     void schedule(final Timer t, final TimerTask task, final Date d) {
  36         t.schedule(task, d);
  37         THROWS(IllegalStateException.class,
  38                new F(){void f(){ t.schedule(task, d); }});
  39     }
  40 
  41     void schedule(final Timer t, final TimerTask task, final Date d, final long period) {
  42         t.schedule(task, d, period);
  43         THROWS(IllegalStateException.class,
  44                new F(){void f(){ t.schedule(task, d, period); }});
  45     }
  46 
  47     void scheduleAtFixedRate(final Timer t, final TimerTask task, final Date d, final long period) {
  48         t.scheduleAtFixedRate(task, d, period);
  49         THROWS(IllegalStateException.class,
  50                new F(){void f(){ t.scheduleAtFixedRate(task, d, period); }});
  51     }
  52 
  53     TimerTask counter(final CountDownLatch latch, final Timer timer, final boolean repeatable) {
  54         return new TimerTask() {
  55             private boolean executed = false;
  56             public void run() {
  57                 // check if the unrepeatable task is executed repeatedly.
  58                 check(!executed ? executed = true : repeatable);
  59                 latch.countDown();
  60                 if (latch.getCount() == 0) {
  61                     timer.cancel();
  62                 }
  63             }};
  64     }
  65 
  66     void test(String[] args) throws Throwable {
  67         final Timer t = new Timer();
  68         final TimerTask x = new TimerTask() { public void run() {}};
  69         THROWS(IllegalArgumentException.class,
  70                new F(){void f(){ t.schedule(x, -42); }},
  71                new F(){void f(){ t.schedule(x, new Date(-42)); }},
  72 
  73                new F(){void f(){ t.schedule(x, Long.MAX_VALUE); }},
  74                new F(){void f(){ t.schedule(x, -42, 42); }},
  75                new F(){void f(){ t.schedule(x, new Date(-42), 42); }},
  76                new F(){void f(){ t.schedule(x, Long.MAX_VALUE, 42); }},
  77                new F(){void f(){ t.schedule(x, 42, 0); }},
  78                new F(){void f(){ t.schedule(x, new Date(42), 0); }},
  79                new F(){void f(){ t.schedule(x, 42, -42); }},
  80                new F(){void f(){ t.schedule(x, new Date(42), -42); }},
  81 
  82                new F(){void f(){ t.scheduleAtFixedRate(x, -42, 42); }},
  83                new F(){void f(){ t.scheduleAtFixedRate(x, new Date(-42), 42); }},
  84                new F(){void f(){ t.scheduleAtFixedRate(x, Long.MAX_VALUE, 42); }},
  85                new F(){void f(){ t.scheduleAtFixedRate(x, 42, 0); }},
  86                new F(){void f(){ t.scheduleAtFixedRate(x, new Date(42), 0); }},
  87                new F(){void f(){ t.scheduleAtFixedRate(x, 42, -42); }},
  88                new F(){void f(){ t.scheduleAtFixedRate(x, new Date(42), -42); }}
  89                );
  90 
  91         THROWS(NullPointerException.class,
  92                new F(){void f(){ t.schedule(null, 42); }},
  93                new F(){void f(){ t.schedule(x, (Date)null); }},
  94 
  95                new F(){void f(){ t.schedule(null, 42, 42); }},
  96                new F(){void f(){ t.schedule(x, (Date)null, 42); }},
  97 
  98                new F(){void f(){ t.scheduleAtFixedRate(null, 42, 42); }},
  99                new F(){void f(){ t.scheduleAtFixedRate(x, (Date)null, 42); }}
 100                );
 101 
 102         final CountDownLatch y = new CountDownLatch(13);
 103         final long start = System.currentTimeMillis();
 104         final Date past = new Date(start - 10500);
 105 
 106         schedule(t, counter(y, t, false), past);
 107         schedule(t, counter(y, t, false), past, 1000);
 108         scheduleAtFixedRate(t, counter(y, t, true), past, 1000);
 109         y.await();
 110 
 111         final long elapsed = System.currentTimeMillis() - start;
 112         check(elapsed < 500);
 113         System.out.printf("elapsed=%d%n", elapsed);
 114 
 115         t.cancel(); //cancel the timer if it hasn't been cancelled by task
 116 
 117         THROWS(IllegalStateException.class,
 118                new F(){void f(){ t.schedule(x, 42); }},
 119                new F(){void f(){ t.schedule(x, past); }},
 120                new F(){void f(){ t.schedule(x, 42, 42); }},
 121                new F(){void f(){ t.schedule(x, past, 42); }},
 122                new F(){void f(){ t.scheduleAtFixedRate(x, 42, 42); }},
 123                new F(){void f(){ t.scheduleAtFixedRate(x, past, 42); }});
 124 
 125     }
 126 
 127     //--------------------- Infrastructure ---------------------------
 128     volatile int passed = 0, failed = 0;
 129     void pass() {passed++;}
 130     void fail() {failed++; Thread.dumpStack();}
 131     void fail(String msg) {System.err.println(msg); fail();}
 132     void unexpected(Throwable t) {failed++; t.printStackTrace();}
 133     void check(boolean cond) {if (cond) pass(); else fail();}
 134     void equal(Object x, Object y) {
 135         if (x == null ? y == null : x.equals(y)) pass();
 136         else fail(x + " not equal to " + y);}
 137     public static void main(String[] args) throws Throwable {
 138         new Args().instanceMain(args);}
 139     void instanceMain(String[] args) throws Throwable {
 140         try {test(args);} catch (Throwable t) {unexpected(t);}
 141         System.out.printf("%nPassed = %d, failed = %d%n%n", passed, failed);
 142         if (failed > 0) throw new AssertionError("Some tests failed");}
 143     abstract class F {abstract void f() throws Throwable;}
 144     void THROWS(Class<? extends Throwable> k, F... fs) {
 145         for (F f : fs)
 146             try {f.f(); fail("Expected " + k.getName() + " not thrown");}
 147             catch (Throwable t) {
 148                 if (k.isAssignableFrom(t.getClass())) pass();
 149                 else unexpected(t);}}
 150 }