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Comparing jsr166/src/test/tck/ScheduledExecutorTest.java (file contents):
Revision 1.73 by jsr166, Tue Oct 6 06:02:53 2015 UTC vs.
Revision 1.84 by jsr166, Mon Mar 20 00:34:27 2017 UTC

# Line 7 | Line 7
7   */
8  
9   import static java.util.concurrent.TimeUnit.MILLISECONDS;
10 + import static java.util.concurrent.TimeUnit.NANOSECONDS;
11   import static java.util.concurrent.TimeUnit.SECONDS;
12  
13   import java.util.ArrayList;
# Line 17 | Line 18 | import java.util.concurrent.Callable;
18   import java.util.concurrent.CancellationException;
19   import java.util.concurrent.CountDownLatch;
20   import java.util.concurrent.ExecutionException;
20 – import java.util.concurrent.Executors;
21   import java.util.concurrent.ExecutorService;
22   import java.util.concurrent.Future;
23   import java.util.concurrent.RejectedExecutionException;
# Line 25 | Line 25 | import java.util.concurrent.ScheduledFut
25   import java.util.concurrent.ScheduledThreadPoolExecutor;
26   import java.util.concurrent.ThreadFactory;
27   import java.util.concurrent.ThreadPoolExecutor;
28 + import java.util.concurrent.atomic.AtomicBoolean;
29   import java.util.concurrent.atomic.AtomicInteger;
30 + import java.util.concurrent.atomic.AtomicLong;
31  
32   import junit.framework.Test;
33   import junit.framework.TestSuite;
# Line 143 | Line 145 | public class ScheduledExecutorTest exten
145      }
146  
147      /**
148 <     * scheduleAtFixedRate executes series of tasks at given rate
148 >     * scheduleAtFixedRate executes series of tasks at given rate.
149 >     * Eventually, it must hold that:
150 >     *   cycles - 1 <= elapsedMillis/delay < cycles
151       */
152      public void testFixedRateSequence() throws InterruptedException {
153          final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
154          try (PoolCleaner cleaner = cleaner(p)) {
155              for (int delay = 1; delay <= LONG_DELAY_MS; delay *= 3) {
156 <                long startTime = System.nanoTime();
157 <                int cycles = 10;
156 >                final long startTime = System.nanoTime();
157 >                final int cycles = 8;
158                  final CountDownLatch done = new CountDownLatch(cycles);
159 <                Runnable task = new CheckedRunnable() {
159 >                final Runnable task = new CheckedRunnable() {
160                      public void realRun() { done.countDown(); }};
161 <                ScheduledFuture h =
161 >                final ScheduledFuture periodicTask =
162                      p.scheduleAtFixedRate(task, 0, delay, MILLISECONDS);
163 <                await(done);
164 <                h.cancel(true);
165 <                double normalizedTime =
166 <                    (double) millisElapsedSince(startTime) / delay;
167 <                if (normalizedTime >= cycles - 1 &&
168 <                    normalizedTime <= cycles)
163 >                final int totalDelayMillis = (cycles - 1) * delay;
164 >                await(done, totalDelayMillis + LONG_DELAY_MS);
165 >                periodicTask.cancel(true);
166 >                final long elapsedMillis = millisElapsedSince(startTime);
167 >                assertTrue(elapsedMillis >= totalDelayMillis);
168 >                if (elapsedMillis <= cycles * delay)
169                      return;
170 +                // else retry with longer delay
171              }
172 <            throw new AssertionError("unexpected execution rate");
172 >            fail("unexpected execution rate");
173          }
174      }
175  
176      /**
177 <     * scheduleWithFixedDelay executes series of tasks with given period
177 >     * scheduleWithFixedDelay executes series of tasks with given period.
178 >     * Eventually, it must hold that each task starts at least delay and at
179 >     * most 2 * delay after the termination of the previous task.
180       */
181      public void testFixedDelaySequence() throws InterruptedException {
182          final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
183          try (PoolCleaner cleaner = cleaner(p)) {
184              for (int delay = 1; delay <= LONG_DELAY_MS; delay *= 3) {
185 <                long startTime = System.nanoTime();
186 <                int cycles = 10;
185 >                final long startTime = System.nanoTime();
186 >                final AtomicLong previous = new AtomicLong(startTime);
187 >                final AtomicBoolean tryLongerDelay = new AtomicBoolean(false);
188 >                final int cycles = 8;
189                  final CountDownLatch done = new CountDownLatch(cycles);
190 <                Runnable task = new CheckedRunnable() {
191 <                    public void realRun() { done.countDown(); }};
192 <                ScheduledFuture h =
190 >                final int d = delay;
191 >                final Runnable task = new CheckedRunnable() {
192 >                    public void realRun() {
193 >                        long now = System.nanoTime();
194 >                        long elapsedMillis
195 >                            = NANOSECONDS.toMillis(now - previous.get());
196 >                        if (done.getCount() == cycles) { // first execution
197 >                            if (elapsedMillis >= d)
198 >                                tryLongerDelay.set(true);
199 >                        } else {
200 >                            assertTrue(elapsedMillis >= d);
201 >                            if (elapsedMillis >= 2 * d)
202 >                                tryLongerDelay.set(true);
203 >                        }
204 >                        previous.set(now);
205 >                        done.countDown();
206 >                    }};
207 >                final ScheduledFuture periodicTask =
208                      p.scheduleWithFixedDelay(task, 0, delay, MILLISECONDS);
209 <                await(done);
210 <                h.cancel(true);
211 <                double normalizedTime =
212 <                    (double) millisElapsedSince(startTime) / delay;
213 <                if (normalizedTime >= cycles - 1 &&
214 <                    normalizedTime <= cycles)
209 >                final int totalDelayMillis = (cycles - 1) * delay;
210 >                await(done, totalDelayMillis + cycles * LONG_DELAY_MS);
211 >                periodicTask.cancel(true);
212 >                final long elapsedMillis = millisElapsedSince(startTime);
213 >                assertTrue(elapsedMillis >= totalDelayMillis);
214 >                if (!tryLongerDelay.get())
215                      return;
216 +                // else retry with longer delay
217              }
218 <            throw new AssertionError("unexpected execution rate");
218 >            fail("unexpected execution rate");
219          }
220      }
221  
# Line 485 | Line 510 | public class ScheduledExecutorTest exten
510       * isShutdown is false before shutdown, true after
511       */
512      public void testIsShutdown() {
488 –
513          final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
514 <        try {
515 <            assertFalse(p.isShutdown());
516 <        }
517 <        finally {
518 <            try { p.shutdown(); } catch (SecurityException ok) { return; }
514 >        assertFalse(p.isShutdown());
515 >        try (PoolCleaner cleaner = cleaner(p)) {
516 >            try {
517 >                p.shutdown();
518 >                assertTrue(p.isShutdown());
519 >            } catch (SecurityException ok) {}
520          }
496 –        assertTrue(p.isShutdown());
521      }
522  
523      /**
# Line 790 | Line 814 | public class ScheduledExecutorTest exten
814                  assertTrue(periodic.isDone());
815              }
816          }
817 +        for (Future<?> blocker : blockers) assertNull(blocker.get());
818          assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
819          assertTrue(p.isTerminated());
820          assertEquals(2 + (effectiveDelayedPolicy ? 1 : 0), ran.get());
# Line 864 | Line 889 | public class ScheduledExecutorTest exten
889          CountDownLatch latch = new CountDownLatch(1);
890          final ExecutorService e = new ScheduledThreadPoolExecutor(2);
891          try (PoolCleaner cleaner = cleaner(e)) {
892 <            List<Callable<String>> l = new ArrayList<Callable<String>>();
892 >            List<Callable<String>> l = new ArrayList<>();
893              l.add(latchAwaitingStringTask(latch));
894              l.add(null);
895              try {
# Line 881 | Line 906 | public class ScheduledExecutorTest exten
906      public void testInvokeAny4() throws Exception {
907          final ExecutorService e = new ScheduledThreadPoolExecutor(2);
908          try (PoolCleaner cleaner = cleaner(e)) {
909 <            List<Callable<String>> l = new ArrayList<Callable<String>>();
909 >            List<Callable<String>> l = new ArrayList<>();
910              l.add(new NPETask());
911              try {
912                  e.invokeAny(l);
# Line 898 | Line 923 | public class ScheduledExecutorTest exten
923      public void testInvokeAny5() throws Exception {
924          final ExecutorService e = new ScheduledThreadPoolExecutor(2);
925          try (PoolCleaner cleaner = cleaner(e)) {
926 <            List<Callable<String>> l = new ArrayList<Callable<String>>();
926 >            List<Callable<String>> l = new ArrayList<>();
927              l.add(new StringTask());
928              l.add(new StringTask());
929              String result = e.invokeAny(l);
# Line 936 | Line 961 | public class ScheduledExecutorTest exten
961      public void testInvokeAll3() throws Exception {
962          final ExecutorService e = new ScheduledThreadPoolExecutor(2);
963          try (PoolCleaner cleaner = cleaner(e)) {
964 <            List<Callable<String>> l = new ArrayList<Callable<String>>();
964 >            List<Callable<String>> l = new ArrayList<>();
965              l.add(new StringTask());
966              l.add(null);
967              try {
# Line 952 | Line 977 | public class ScheduledExecutorTest exten
977      public void testInvokeAll4() throws Exception {
978          final ExecutorService e = new ScheduledThreadPoolExecutor(2);
979          try (PoolCleaner cleaner = cleaner(e)) {
980 <            List<Callable<String>> l = new ArrayList<Callable<String>>();
980 >            List<Callable<String>> l = new ArrayList<>();
981              l.add(new NPETask());
982              List<Future<String>> futures = e.invokeAll(l);
983              assertEquals(1, futures.size());
# Line 971 | Line 996 | public class ScheduledExecutorTest exten
996      public void testInvokeAll5() throws Exception {
997          final ExecutorService e = new ScheduledThreadPoolExecutor(2);
998          try (PoolCleaner cleaner = cleaner(e)) {
999 <            List<Callable<String>> l = new ArrayList<Callable<String>>();
999 >            List<Callable<String>> l = new ArrayList<>();
1000              l.add(new StringTask());
1001              l.add(new StringTask());
1002              List<Future<String>> futures = e.invokeAll(l);
# Line 1000 | Line 1025 | public class ScheduledExecutorTest exten
1025      public void testTimedInvokeAnyNullTimeUnit() throws Exception {
1026          final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1027          try (PoolCleaner cleaner = cleaner(e)) {
1028 <            List<Callable<String>> l = new ArrayList<Callable<String>>();
1028 >            List<Callable<String>> l = new ArrayList<>();
1029              l.add(new StringTask());
1030              try {
1031                  e.invokeAny(l, MEDIUM_DELAY_MS, null);
# Line 1029 | Line 1054 | public class ScheduledExecutorTest exten
1054          CountDownLatch latch = new CountDownLatch(1);
1055          final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1056          try (PoolCleaner cleaner = cleaner(e)) {
1057 <            List<Callable<String>> l = new ArrayList<Callable<String>>();
1057 >            List<Callable<String>> l = new ArrayList<>();
1058              l.add(latchAwaitingStringTask(latch));
1059              l.add(null);
1060              try {
# Line 1046 | Line 1071 | public class ScheduledExecutorTest exten
1071      public void testTimedInvokeAny4() throws Exception {
1072          final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1073          try (PoolCleaner cleaner = cleaner(e)) {
1074 <            List<Callable<String>> l = new ArrayList<Callable<String>>();
1074 >            long startTime = System.nanoTime();
1075 >            List<Callable<String>> l = new ArrayList<>();
1076              l.add(new NPETask());
1077              try {
1078 <                e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS);
1078 >                e.invokeAny(l, LONG_DELAY_MS, MILLISECONDS);
1079                  shouldThrow();
1080              } catch (ExecutionException success) {
1081                  assertTrue(success.getCause() instanceof NullPointerException);
1082              }
1083 +            assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
1084          }
1085      }
1086  
# Line 1063 | Line 1090 | public class ScheduledExecutorTest exten
1090      public void testTimedInvokeAny5() throws Exception {
1091          final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1092          try (PoolCleaner cleaner = cleaner(e)) {
1093 <            List<Callable<String>> l = new ArrayList<Callable<String>>();
1093 >            long startTime = System.nanoTime();
1094 >            List<Callable<String>> l = new ArrayList<>();
1095              l.add(new StringTask());
1096              l.add(new StringTask());
1097 <            String result = e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS);
1097 >            String result = e.invokeAny(l, LONG_DELAY_MS, MILLISECONDS);
1098              assertSame(TEST_STRING, result);
1099 +            assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
1100          }
1101      }
1102  
# Line 1090 | Line 1119 | public class ScheduledExecutorTest exten
1119      public void testTimedInvokeAllNullTimeUnit() throws Exception {
1120          final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1121          try (PoolCleaner cleaner = cleaner(e)) {
1122 <            List<Callable<String>> l = new ArrayList<Callable<String>>();
1122 >            List<Callable<String>> l = new ArrayList<>();
1123              l.add(new StringTask());
1124              try {
1125                  e.invokeAll(l, MEDIUM_DELAY_MS, null);
# Line 1117 | Line 1146 | public class ScheduledExecutorTest exten
1146      public void testTimedInvokeAll3() throws Exception {
1147          final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1148          try (PoolCleaner cleaner = cleaner(e)) {
1149 <            List<Callable<String>> l = new ArrayList<Callable<String>>();
1149 >            List<Callable<String>> l = new ArrayList<>();
1150              l.add(new StringTask());
1151              l.add(null);
1152              try {
# Line 1133 | Line 1162 | public class ScheduledExecutorTest exten
1162      public void testTimedInvokeAll4() throws Exception {
1163          final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1164          try (PoolCleaner cleaner = cleaner(e)) {
1165 <            List<Callable<String>> l = new ArrayList<Callable<String>>();
1165 >            List<Callable<String>> l = new ArrayList<>();
1166              l.add(new NPETask());
1167              List<Future<String>> futures =
1168                  e.invokeAll(l, LONG_DELAY_MS, MILLISECONDS);
# Line 1153 | Line 1182 | public class ScheduledExecutorTest exten
1182      public void testTimedInvokeAll5() throws Exception {
1183          final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1184          try (PoolCleaner cleaner = cleaner(e)) {
1185 <            List<Callable<String>> l = new ArrayList<Callable<String>>();
1185 >            List<Callable<String>> l = new ArrayList<>();
1186              l.add(new StringTask());
1187              l.add(new StringTask());
1188              List<Future<String>> futures =
# Line 1168 | Line 1197 | public class ScheduledExecutorTest exten
1197       * timed invokeAll(c) cancels tasks not completed by timeout
1198       */
1199      public void testTimedInvokeAll6() throws Exception {
1200 <        final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1201 <        try (PoolCleaner cleaner = cleaner(e)) {
1202 <            for (long timeout = timeoutMillis();;) {
1200 >        for (long timeout = timeoutMillis();;) {
1201 >            final CountDownLatch done = new CountDownLatch(1);
1202 >            final Callable<String> waiter = new CheckedCallable<String>() {
1203 >                public String realCall() {
1204 >                    try { done.await(LONG_DELAY_MS, MILLISECONDS); }
1205 >                    catch (InterruptedException ok) {}
1206 >                    return "1"; }};
1207 >            final ExecutorService p = new ScheduledThreadPoolExecutor(2);
1208 >            try (PoolCleaner cleaner = cleaner(p, done)) {
1209                  List<Callable<String>> tasks = new ArrayList<>();
1210                  tasks.add(new StringTask("0"));
1211 <                tasks.add(Executors.callable(new LongPossiblyInterruptedRunnable(), TEST_STRING));
1211 >                tasks.add(waiter);
1212                  tasks.add(new StringTask("2"));
1213                  long startTime = System.nanoTime();
1214                  List<Future<String>> futures =
1215 <                    e.invokeAll(tasks, timeout, MILLISECONDS);
1215 >                    p.invokeAll(tasks, timeout, MILLISECONDS);
1216                  assertEquals(tasks.size(), futures.size());
1217                  assertTrue(millisElapsedSince(startTime) >= timeout);
1218                  for (Future future : futures)
# Line 1196 | Line 1231 | public class ScheduledExecutorTest exten
1231          }
1232      }
1233  
1234 +    /**
1235 +     * A fixed delay task with overflowing period should not prevent a
1236 +     * one-shot task from executing.
1237 +     * https://bugs.openjdk.java.net/browse/JDK-8051859
1238 +     */
1239 +    public void testScheduleWithFixedDelay_overflow() throws Exception {
1240 +        final CountDownLatch delayedDone = new CountDownLatch(1);
1241 +        final CountDownLatch immediateDone = new CountDownLatch(1);
1242 +        final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
1243 +        try (PoolCleaner cleaner = cleaner(p)) {
1244 +            final Runnable immediate = new Runnable() { public void run() {
1245 +                immediateDone.countDown();
1246 +            }};
1247 +            final Runnable delayed = new Runnable() { public void run() {
1248 +                delayedDone.countDown();
1249 +                p.submit(immediate);
1250 +            }};
1251 +            p.scheduleWithFixedDelay(delayed, 0L, Long.MAX_VALUE, SECONDS);
1252 +            await(delayedDone);
1253 +            await(immediateDone);
1254 +        }
1255 +    }
1256 +
1257   }

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