ViewVC Help
View File | Revision Log | Show Annotations | Download File | Root Listing
root/jsr166/jsr166/src/test/tck/ScheduledExecutorTest.java
(Generate patch)

Comparing jsr166/src/test/tck/ScheduledExecutorTest.java (file contents):
Revision 1.17 by dl, Tue Jan 20 20:20:56 2004 UTC vs.
Revision 1.20 by dl, Thu Jan 22 14:39:25 2004 UTC

# Line 9 | Line 9
9   import junit.framework.*;
10   import java.util.*;
11   import java.util.concurrent.*;
12 + import java.util.concurrent.atomic.*;
13  
14   public class ScheduledExecutorTest extends JSR166TestCase {
15      public static void main(String[] args) {
# Line 104 | Line 105 | public class ScheduledExecutorTest exten
105          }
106      }
107  
108 +    static class RunnableCounter implements Runnable {
109 +        AtomicInteger count = new AtomicInteger(0);
110 +        public void run() { count.getAndIncrement(); }
111 +    }
112 +
113      /**
114       * scheduleWithFixedDelay executes runnable after given initial delay
115       */
# Line 123 | Line 129 | public class ScheduledExecutorTest exten
129      }
130      
131      /**
132 +     * scheduleAtFixedRate executes series of tasks at given rate
133 +     */
134 +    public void testFixedRateSequence() {
135 +        try {
136 +            ScheduledThreadPoolExecutor p1 = new ScheduledThreadPoolExecutor(1);
137 +            RunnableCounter counter = new RunnableCounter();
138 +            ScheduledFuture h =
139 +                p1.scheduleAtFixedRate(counter, 0, 1, TimeUnit.MILLISECONDS);
140 +            Thread.sleep(SMALL_DELAY_MS);
141 +            h.cancel(true);
142 +            int c = counter.count.get();
143 +            // By time scaling conventions, we must have at least
144 +            // an execution per SHORT delay, but no more than one SHORT more
145 +            assertTrue(c >= SMALL_DELAY_MS / SHORT_DELAY_MS);
146 +            assertTrue(c <= SMALL_DELAY_MS + SHORT_DELAY_MS);
147 +            assertTrue(h.isDone());
148 +            joinPool(p1);
149 +        } catch(Exception e){
150 +            unexpectedException();
151 +        }
152 +    }
153 +
154 +    /**
155 +     * scheduleWithFixedDelay executes series of tasks with given period
156 +     */
157 +    public void testFixedDelaySequence() {
158 +        try {
159 +            ScheduledThreadPoolExecutor p1 = new ScheduledThreadPoolExecutor(1);
160 +            RunnableCounter counter = new RunnableCounter();
161 +            ScheduledFuture h =
162 +                p1.scheduleWithFixedDelay(counter, 0, 1, TimeUnit.MILLISECONDS);
163 +            Thread.sleep(SMALL_DELAY_MS);
164 +            h.cancel(true);
165 +            int c = counter.count.get();
166 +            assertTrue(c >= SMALL_DELAY_MS / SHORT_DELAY_MS);
167 +            assertTrue(c <= SMALL_DELAY_MS + SHORT_DELAY_MS);
168 +            assertTrue(h.isDone());
169 +            joinPool(p1);
170 +        } catch(Exception e){
171 +            unexpectedException();
172 +        }
173 +    }
174 +
175 +
176 +    /**
177       *  execute (null) throws NPE
178       */
179      public void testExecuteNull() {
# Line 474 | Line 525 | public class ScheduledExecutorTest exten
525          ScheduledThreadPoolExecutor p1 = new ScheduledThreadPoolExecutor(1);
526          ScheduledFuture[] tasks = new ScheduledFuture[5];
527          for(int i = 0; i < 5; i++){
528 <            tasks[i] = p1.schedule(new SmallPossiblyInterruptedRunnable(), 1, TimeUnit.MILLISECONDS);
528 >            tasks[i] = p1.schedule(new SmallPossiblyInterruptedRunnable(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
529 >        }
530 >        try {
531 >            int max = 5;
532 >            if (tasks[4].cancel(true)) --max;
533 >            if (tasks[3].cancel(true)) --max;
534 >            // There must eventually be an interference-free point at
535 >            // which purge will not fail. (At worst, when queue is empty.)
536 >            int k;
537 >            for (k = 0; k < SMALL_DELAY_MS; ++k) {
538 >                p1.purge();
539 >                long count = p1.getTaskCount();
540 >                if (count >= 0 && count <= max)
541 >                    break;
542 >                Thread.sleep(1);
543 >            }
544 >            assertTrue(k < SMALL_DELAY_MS);
545 >        } catch(Exception e) {
546 >            unexpectedException();
547 >        } finally {
548 >            joinPool(p1);
549          }
479 –        int max = 5;
480 –        if (tasks[4].cancel(true)) --max;
481 –        if (tasks[3].cancel(true)) --max;
482 –        p1.purge();
483 –        long count = p1.getTaskCount();
484 –        assertTrue(count > 0 && count <= max);
485 –        joinPool(p1);
550      }
551  
552      /**
# Line 672 | Line 736 | public class ScheduledExecutorTest exten
736          }
737      }
738  
675 –
676 –
677 –
678 –
739      /**
740       * invokeAny(null) throws NPE
741       */

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines