30 |
|
import java.util.concurrent.Executor; |
31 |
|
import java.util.concurrent.ForkJoinPool; |
32 |
|
import java.util.concurrent.ForkJoinTask; |
33 |
+ |
import java.util.concurrent.RejectedExecutionException; |
34 |
|
import java.util.concurrent.TimeoutException; |
35 |
|
import java.util.concurrent.TimeUnit; |
36 |
|
import java.util.concurrent.atomic.AtomicInteger; |
460 |
|
class FailingSupplier extends CheckedAction |
461 |
|
implements Supplier<Integer> |
462 |
|
{ |
463 |
< |
FailingSupplier(ExecutionMode m) { super(m); } |
463 |
> |
final CFException ex; |
464 |
> |
FailingSupplier(ExecutionMode m) { super(m); ex = new CFException(); } |
465 |
|
public Integer get() { |
466 |
|
invoked(); |
467 |
< |
throw new CFException(); |
467 |
> |
throw ex; |
468 |
|
} |
469 |
|
} |
470 |
|
|
471 |
|
class FailingConsumer extends CheckedIntegerAction |
472 |
|
implements Consumer<Integer> |
473 |
|
{ |
474 |
< |
FailingConsumer(ExecutionMode m) { super(m); } |
474 |
> |
final CFException ex; |
475 |
> |
FailingConsumer(ExecutionMode m) { super(m); ex = new CFException(); } |
476 |
|
public void accept(Integer x) { |
477 |
|
invoked(); |
478 |
|
value = x; |
479 |
< |
throw new CFException(); |
479 |
> |
throw ex; |
480 |
|
} |
481 |
|
} |
482 |
|
|
483 |
|
class FailingBiConsumer extends CheckedIntegerAction |
484 |
|
implements BiConsumer<Integer, Integer> |
485 |
|
{ |
486 |
< |
FailingBiConsumer(ExecutionMode m) { super(m); } |
486 |
> |
final CFException ex; |
487 |
> |
FailingBiConsumer(ExecutionMode m) { super(m); ex = new CFException(); } |
488 |
|
public void accept(Integer x, Integer y) { |
489 |
|
invoked(); |
490 |
|
value = subtract(x, y); |
491 |
< |
throw new CFException(); |
491 |
> |
throw ex; |
492 |
|
} |
493 |
|
} |
494 |
|
|
495 |
|
class FailingFunction extends CheckedIntegerAction |
496 |
|
implements Function<Integer, Integer> |
497 |
|
{ |
498 |
< |
FailingFunction(ExecutionMode m) { super(m); } |
498 |
> |
final CFException ex; |
499 |
> |
FailingFunction(ExecutionMode m) { super(m); ex = new CFException(); } |
500 |
|
public Integer apply(Integer x) { |
501 |
|
invoked(); |
502 |
|
value = x; |
503 |
< |
throw new CFException(); |
503 |
> |
throw ex; |
504 |
|
} |
505 |
|
} |
506 |
|
|
507 |
|
class FailingBiFunction extends CheckedIntegerAction |
508 |
|
implements BiFunction<Integer, Integer, Integer> |
509 |
|
{ |
510 |
< |
FailingBiFunction(ExecutionMode m) { super(m); } |
510 |
> |
final CFException ex; |
511 |
> |
FailingBiFunction(ExecutionMode m) { super(m); ex = new CFException(); } |
512 |
|
public Integer apply(Integer x, Integer y) { |
513 |
|
invoked(); |
514 |
|
value = subtract(x, y); |
515 |
< |
throw new CFException(); |
515 |
> |
throw ex; |
516 |
|
} |
517 |
|
} |
518 |
|
|
519 |
|
class FailingRunnable extends CheckedAction implements Runnable { |
520 |
< |
FailingRunnable(ExecutionMode m) { super(m); } |
520 |
> |
final CFException ex; |
521 |
> |
FailingRunnable(ExecutionMode m) { super(m); ex = new CFException(); } |
522 |
|
public void run() { |
523 |
|
invoked(); |
524 |
< |
throw new CFException(); |
524 |
> |
throw ex; |
525 |
|
} |
526 |
|
} |
527 |
|
|
541 |
|
class FailingCompletableFutureFunction extends CheckedIntegerAction |
542 |
|
implements Function<Integer, CompletableFuture<Integer>> |
543 |
|
{ |
544 |
< |
FailingCompletableFutureFunction(ExecutionMode m) { super(m); } |
544 |
> |
final CFException ex; |
545 |
> |
FailingCompletableFutureFunction(ExecutionMode m) { super(m); ex = new CFException(); } |
546 |
|
public CompletableFuture<Integer> apply(Integer x) { |
547 |
|
invoked(); |
548 |
|
value = x; |
549 |
< |
throw new CFException(); |
549 |
> |
throw ex; |
550 |
|
} |
551 |
|
} |
552 |
|
|
884 |
|
assertEquals(1, a.get()); |
885 |
|
}} |
886 |
|
|
887 |
+ |
/** |
888 |
+ |
* If an "exceptionally action" throws an exception, it completes |
889 |
+ |
* exceptionally with that exception |
890 |
+ |
*/ |
891 |
|
public void testExceptionally_exceptionalCompletionActionFailed() { |
892 |
|
for (boolean createIncomplete : new boolean[] { true, false }) |
893 |
|
{ |
906 |
|
if (createIncomplete) f.completeExceptionally(ex1); |
907 |
|
|
908 |
|
checkCompletedWithWrappedException(g, ex2); |
909 |
+ |
checkCompletedExceptionally(f, ex1); |
910 |
|
assertEquals(1, a.get()); |
911 |
|
}} |
912 |
|
|
924 |
|
if (!createIncomplete) assertTrue(f.complete(v1)); |
925 |
|
final CompletableFuture<Integer> g = m.whenComplete |
926 |
|
(f, |
927 |
< |
(Integer x, Throwable t) -> { |
927 |
> |
(Integer result, Throwable t) -> { |
928 |
|
m.checkExecutionMode(); |
929 |
< |
threadAssertSame(x, v1); |
929 |
> |
threadAssertSame(result, v1); |
930 |
|
threadAssertNull(t); |
931 |
|
a.getAndIncrement(); |
932 |
|
}); |
951 |
|
if (!createIncomplete) f.completeExceptionally(ex); |
952 |
|
final CompletableFuture<Integer> g = m.whenComplete |
953 |
|
(f, |
954 |
< |
(Integer x, Throwable t) -> { |
954 |
> |
(Integer result, Throwable t) -> { |
955 |
|
m.checkExecutionMode(); |
956 |
< |
threadAssertNull(x); |
956 |
> |
threadAssertNull(result); |
957 |
|
threadAssertSame(t, ex); |
958 |
|
a.getAndIncrement(); |
959 |
|
}); |
978 |
|
if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning)); |
979 |
|
final CompletableFuture<Integer> g = m.whenComplete |
980 |
|
(f, |
981 |
< |
(Integer x, Throwable t) -> { |
981 |
> |
(Integer result, Throwable t) -> { |
982 |
|
m.checkExecutionMode(); |
983 |
< |
threadAssertNull(x); |
983 |
> |
threadAssertNull(result); |
984 |
|
threadAssertTrue(t instanceof CancellationException); |
985 |
|
a.getAndIncrement(); |
986 |
|
}); |
995 |
|
* If a whenComplete action throws an exception when triggered by |
996 |
|
* a normal completion, it completes exceptionally |
997 |
|
*/ |
998 |
< |
public void testWhenComplete_actionFailed() { |
998 |
> |
public void testWhenComplete_sourceCompletedNormallyActionFailed() { |
999 |
|
for (boolean createIncomplete : new boolean[] { true, false }) |
1000 |
|
for (ExecutionMode m : ExecutionMode.values()) |
1001 |
|
for (Integer v1 : new Integer[] { 1, null }) |
1006 |
|
if (!createIncomplete) assertTrue(f.complete(v1)); |
1007 |
|
final CompletableFuture<Integer> g = m.whenComplete |
1008 |
|
(f, |
1009 |
< |
(Integer x, Throwable t) -> { |
1009 |
> |
(Integer result, Throwable t) -> { |
1010 |
|
m.checkExecutionMode(); |
1011 |
< |
threadAssertSame(x, v1); |
1011 |
> |
threadAssertSame(result, v1); |
1012 |
|
threadAssertNull(t); |
1013 |
|
a.getAndIncrement(); |
1014 |
|
throw ex; |
1023 |
|
/** |
1024 |
|
* If a whenComplete action throws an exception when triggered by |
1025 |
|
* a source completion that also throws an exception, the source |
1026 |
< |
* exception takes precedence. |
1026 |
> |
* exception takes precedence (unlike handle) |
1027 |
|
*/ |
1028 |
< |
public void testWhenComplete_actionFailedSourceFailed() { |
1028 |
> |
public void testWhenComplete_sourceFailedActionFailed() { |
1029 |
|
for (boolean createIncomplete : new boolean[] { true, false }) |
1030 |
|
for (ExecutionMode m : ExecutionMode.values()) |
1031 |
|
{ |
1037 |
|
if (!createIncomplete) f.completeExceptionally(ex1); |
1038 |
|
final CompletableFuture<Integer> g = m.whenComplete |
1039 |
|
(f, |
1040 |
< |
(Integer x, Throwable t) -> { |
1040 |
> |
(Integer result, Throwable t) -> { |
1041 |
|
m.checkExecutionMode(); |
1042 |
|
threadAssertSame(t, ex1); |
1043 |
< |
threadAssertNull(x); |
1043 |
> |
threadAssertNull(result); |
1044 |
|
a.getAndIncrement(); |
1045 |
|
throw ex2; |
1046 |
|
}); |
1048 |
|
|
1049 |
|
checkCompletedWithWrappedException(g, ex1); |
1050 |
|
checkCompletedExceptionally(f, ex1); |
1051 |
+ |
if (testImplementationDetails) { |
1052 |
+ |
assertEquals(1, ex1.getSuppressed().length); |
1053 |
+ |
assertSame(ex2, ex1.getSuppressed()[0]); |
1054 |
+ |
} |
1055 |
|
assertEquals(1, a.get()); |
1056 |
|
}} |
1057 |
|
|
1069 |
|
if (!createIncomplete) assertTrue(f.complete(v1)); |
1070 |
|
final CompletableFuture<Integer> g = m.handle |
1071 |
|
(f, |
1072 |
< |
(Integer x, Throwable t) -> { |
1072 |
> |
(Integer result, Throwable t) -> { |
1073 |
|
m.checkExecutionMode(); |
1074 |
< |
threadAssertSame(x, v1); |
1074 |
> |
threadAssertSame(result, v1); |
1075 |
|
threadAssertNull(t); |
1076 |
|
a.getAndIncrement(); |
1077 |
|
return inc(v1); |
1098 |
|
if (!createIncomplete) f.completeExceptionally(ex); |
1099 |
|
final CompletableFuture<Integer> g = m.handle |
1100 |
|
(f, |
1101 |
< |
(Integer x, Throwable t) -> { |
1101 |
> |
(Integer result, Throwable t) -> { |
1102 |
|
m.checkExecutionMode(); |
1103 |
< |
threadAssertNull(x); |
1103 |
> |
threadAssertNull(result); |
1104 |
|
threadAssertSame(t, ex); |
1105 |
|
a.getAndIncrement(); |
1106 |
|
return v1; |
1127 |
|
if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning)); |
1128 |
|
final CompletableFuture<Integer> g = m.handle |
1129 |
|
(f, |
1130 |
< |
(Integer x, Throwable t) -> { |
1130 |
> |
(Integer result, Throwable t) -> { |
1131 |
|
m.checkExecutionMode(); |
1132 |
< |
threadAssertNull(x); |
1132 |
> |
threadAssertNull(result); |
1133 |
|
threadAssertTrue(t instanceof CancellationException); |
1134 |
|
a.getAndIncrement(); |
1135 |
|
return v1; |
1142 |
|
}} |
1143 |
|
|
1144 |
|
/** |
1145 |
< |
* handle result completes exceptionally if action does |
1145 |
> |
* If a "handle action" throws an exception when triggered by |
1146 |
> |
* a normal completion, it completes exceptionally |
1147 |
|
*/ |
1148 |
< |
public void testHandle_sourceFailedActionFailed() { |
1148 |
> |
public void testHandle_sourceCompletedNormallyActionFailed() { |
1149 |
|
for (ExecutionMode m : ExecutionMode.values()) |
1150 |
|
for (boolean createIncomplete : new boolean[] { true, false }) |
1151 |
+ |
for (Integer v1 : new Integer[] { 1, null }) |
1152 |
|
{ |
1153 |
|
final CompletableFuture<Integer> f = new CompletableFuture<>(); |
1154 |
|
final AtomicInteger a = new AtomicInteger(0); |
1155 |
< |
final CFException ex1 = new CFException(); |
1156 |
< |
final CFException ex2 = new CFException(); |
1138 |
< |
if (!createIncomplete) f.completeExceptionally(ex1); |
1155 |
> |
final CFException ex = new CFException(); |
1156 |
> |
if (!createIncomplete) assertTrue(f.complete(v1)); |
1157 |
|
final CompletableFuture<Integer> g = m.handle |
1158 |
|
(f, |
1159 |
< |
(Integer x, Throwable t) -> { |
1159 |
> |
(Integer result, Throwable t) -> { |
1160 |
|
m.checkExecutionMode(); |
1161 |
< |
threadAssertNull(x); |
1162 |
< |
threadAssertSame(ex1, t); |
1161 |
> |
threadAssertSame(result, v1); |
1162 |
> |
threadAssertNull(t); |
1163 |
|
a.getAndIncrement(); |
1164 |
< |
throw ex2; |
1164 |
> |
throw ex; |
1165 |
|
}); |
1166 |
< |
if (createIncomplete) f.completeExceptionally(ex1); |
1166 |
> |
if (createIncomplete) assertTrue(f.complete(v1)); |
1167 |
|
|
1168 |
< |
checkCompletedWithWrappedException(g, ex2); |
1169 |
< |
checkCompletedExceptionally(f, ex1); |
1168 |
> |
checkCompletedWithWrappedException(g, ex); |
1169 |
> |
checkCompletedNormally(f, v1); |
1170 |
|
assertEquals(1, a.get()); |
1171 |
|
}} |
1172 |
|
|
1173 |
< |
public void testHandle_sourceCompletedNormallyActionFailed() { |
1174 |
< |
for (ExecutionMode m : ExecutionMode.values()) |
1173 |
> |
/** |
1174 |
> |
* If a "handle action" throws an exception when triggered by |
1175 |
> |
* a source completion that also throws an exception, the action |
1176 |
> |
* exception takes precedence (unlike whenComplete) |
1177 |
> |
*/ |
1178 |
> |
public void testHandle_sourceFailedActionFailed() { |
1179 |
|
for (boolean createIncomplete : new boolean[] { true, false }) |
1180 |
< |
for (Integer v1 : new Integer[] { 1, null }) |
1180 |
> |
for (ExecutionMode m : ExecutionMode.values()) |
1181 |
|
{ |
1160 |
– |
final CompletableFuture<Integer> f = new CompletableFuture<>(); |
1182 |
|
final AtomicInteger a = new AtomicInteger(0); |
1183 |
< |
final CFException ex = new CFException(); |
1184 |
< |
if (!createIncomplete) assertTrue(f.complete(v1)); |
1183 |
> |
final CFException ex1 = new CFException(); |
1184 |
> |
final CFException ex2 = new CFException(); |
1185 |
> |
final CompletableFuture<Integer> f = new CompletableFuture<>(); |
1186 |
> |
|
1187 |
> |
if (!createIncomplete) f.completeExceptionally(ex1); |
1188 |
|
final CompletableFuture<Integer> g = m.handle |
1189 |
|
(f, |
1190 |
< |
(Integer x, Throwable t) -> { |
1190 |
> |
(Integer result, Throwable t) -> { |
1191 |
|
m.checkExecutionMode(); |
1192 |
< |
threadAssertSame(x, v1); |
1193 |
< |
threadAssertNull(t); |
1192 |
> |
threadAssertNull(result); |
1193 |
> |
threadAssertSame(ex1, t); |
1194 |
|
a.getAndIncrement(); |
1195 |
< |
throw ex; |
1195 |
> |
throw ex2; |
1196 |
|
}); |
1197 |
< |
if (createIncomplete) assertTrue(f.complete(v1)); |
1197 |
> |
if (createIncomplete) f.completeExceptionally(ex1); |
1198 |
|
|
1199 |
< |
checkCompletedWithWrappedException(g, ex); |
1200 |
< |
checkCompletedNormally(f, v1); |
1199 |
> |
checkCompletedWithWrappedException(g, ex2); |
1200 |
> |
checkCompletedExceptionally(f, ex1); |
1201 |
|
assertEquals(1, a.get()); |
1202 |
|
}} |
1203 |
|
|
1230 |
|
{ |
1231 |
|
final FailingRunnable r = new FailingRunnable(m); |
1232 |
|
final CompletableFuture<Void> f = m.runAsync(r); |
1233 |
< |
checkCompletedWithWrappedCFException(f); |
1233 |
> |
checkCompletedWithWrappedException(f, r.ex); |
1234 |
|
r.assertInvoked(); |
1235 |
|
}} |
1236 |
|
|
1264 |
|
{ |
1265 |
|
FailingSupplier r = new FailingSupplier(m); |
1266 |
|
CompletableFuture<Integer> f = m.supplyAsync(r); |
1267 |
< |
checkCompletedWithWrappedCFException(f); |
1267 |
> |
checkCompletedWithWrappedException(f, r.ex); |
1268 |
|
r.assertInvoked(); |
1269 |
|
}} |
1270 |
|
|
1386 |
|
final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]); |
1387 |
|
final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]); |
1388 |
|
|
1389 |
< |
checkCompletedWithWrappedCFException(h0); |
1390 |
< |
checkCompletedWithWrappedCFException(h1); |
1391 |
< |
checkCompletedWithWrappedCFException(h2); |
1392 |
< |
checkCompletedWithWrappedCFException(h3); |
1393 |
< |
checkCompletedWithWrappedCFException(h4); |
1394 |
< |
checkCompletedWithWrappedCFException(h5); |
1389 |
> |
checkCompletedWithWrappedException(h0, rs[0].ex); |
1390 |
> |
checkCompletedWithWrappedException(h1, rs[1].ex); |
1391 |
> |
checkCompletedWithWrappedException(h2, rs[2].ex); |
1392 |
> |
checkCompletedWithWrappedException(h3, rs[3].ex); |
1393 |
> |
checkCompletedWithWrappedException(h4, rs[4].ex); |
1394 |
> |
checkCompletedWithWrappedException(h5, rs[5].ex); |
1395 |
|
checkCompletedNormally(f, v1); |
1396 |
|
}} |
1397 |
|
|
1490 |
|
final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]); |
1491 |
|
final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]); |
1492 |
|
|
1493 |
< |
checkCompletedWithWrappedCFException(h0); |
1494 |
< |
checkCompletedWithWrappedCFException(h1); |
1495 |
< |
checkCompletedWithWrappedCFException(h2); |
1496 |
< |
checkCompletedWithWrappedCFException(h3); |
1493 |
> |
checkCompletedWithWrappedException(h0, rs[0].ex); |
1494 |
> |
checkCompletedWithWrappedException(h1, rs[1].ex); |
1495 |
> |
checkCompletedWithWrappedException(h2, rs[2].ex); |
1496 |
> |
checkCompletedWithWrappedException(h3, rs[3].ex); |
1497 |
|
checkCompletedNormally(f, v1); |
1498 |
|
}} |
1499 |
|
|
1592 |
|
final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]); |
1593 |
|
final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]); |
1594 |
|
|
1595 |
< |
checkCompletedWithWrappedCFException(h0); |
1596 |
< |
checkCompletedWithWrappedCFException(h1); |
1597 |
< |
checkCompletedWithWrappedCFException(h2); |
1598 |
< |
checkCompletedWithWrappedCFException(h3); |
1595 |
> |
checkCompletedWithWrappedException(h0, rs[0].ex); |
1596 |
> |
checkCompletedWithWrappedException(h1, rs[1].ex); |
1597 |
> |
checkCompletedWithWrappedException(h2, rs[2].ex); |
1598 |
> |
checkCompletedWithWrappedException(h3, rs[3].ex); |
1599 |
|
checkCompletedNormally(f, v1); |
1600 |
|
}} |
1601 |
|
|
1757 |
|
assertTrue(snd.complete(w2)); |
1758 |
|
final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3); |
1759 |
|
|
1760 |
< |
checkCompletedWithWrappedCFException(h1); |
1761 |
< |
checkCompletedWithWrappedCFException(h2); |
1762 |
< |
checkCompletedWithWrappedCFException(h3); |
1760 |
> |
checkCompletedWithWrappedException(h1, r1.ex); |
1761 |
> |
checkCompletedWithWrappedException(h2, r2.ex); |
1762 |
> |
checkCompletedWithWrappedException(h3, r3.ex); |
1763 |
|
r1.assertInvoked(); |
1764 |
|
r2.assertInvoked(); |
1765 |
|
r3.assertInvoked(); |
1921 |
|
assertTrue(snd.complete(w2)); |
1922 |
|
final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3); |
1923 |
|
|
1924 |
< |
checkCompletedWithWrappedCFException(h1); |
1925 |
< |
checkCompletedWithWrappedCFException(h2); |
1926 |
< |
checkCompletedWithWrappedCFException(h3); |
1924 |
> |
checkCompletedWithWrappedException(h1, r1.ex); |
1925 |
> |
checkCompletedWithWrappedException(h2, r2.ex); |
1926 |
> |
checkCompletedWithWrappedException(h3, r3.ex); |
1927 |
|
r1.assertInvoked(); |
1928 |
|
r2.assertInvoked(); |
1929 |
|
r3.assertInvoked(); |
2085 |
|
assertTrue(snd.complete(w2)); |
2086 |
|
final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3); |
2087 |
|
|
2088 |
< |
checkCompletedWithWrappedCFException(h1); |
2089 |
< |
checkCompletedWithWrappedCFException(h2); |
2090 |
< |
checkCompletedWithWrappedCFException(h3); |
2088 |
> |
checkCompletedWithWrappedException(h1, r1.ex); |
2089 |
> |
checkCompletedWithWrappedException(h2, r2.ex); |
2090 |
> |
checkCompletedWithWrappedException(h3, r3.ex); |
2091 |
|
r1.assertInvoked(); |
2092 |
|
r2.assertInvoked(); |
2093 |
|
r3.assertInvoked(); |
2377 |
|
f.complete(v1); |
2378 |
|
final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]); |
2379 |
|
final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]); |
2380 |
< |
checkCompletedWithWrappedCFException(h0); |
2381 |
< |
checkCompletedWithWrappedCFException(h1); |
2382 |
< |
checkCompletedWithWrappedCFException(h2); |
2383 |
< |
checkCompletedWithWrappedCFException(h3); |
2380 |
> |
checkCompletedWithWrappedException(h0, rs[0].ex); |
2381 |
> |
checkCompletedWithWrappedException(h1, rs[1].ex); |
2382 |
> |
checkCompletedWithWrappedException(h2, rs[2].ex); |
2383 |
> |
checkCompletedWithWrappedException(h3, rs[3].ex); |
2384 |
|
for (int i = 0; i < 4; i++) rs[i].assertValue(v1); |
2385 |
|
|
2386 |
|
g.complete(v2); |
2389 |
|
final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]); |
2390 |
|
final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]); |
2391 |
|
|
2392 |
< |
checkCompletedWithWrappedCFException(h4); |
2392 |
> |
checkCompletedWithWrappedException(h4, rs[4].ex); |
2393 |
|
assertTrue(Objects.equals(v1, rs[4].value) || |
2394 |
|
Objects.equals(v2, rs[4].value)); |
2395 |
< |
checkCompletedWithWrappedCFException(h5); |
2395 |
> |
checkCompletedWithWrappedException(h5, rs[5].ex); |
2396 |
|
assertTrue(Objects.equals(v1, rs[5].value) || |
2397 |
|
Objects.equals(v2, rs[5].value)); |
2398 |
|
|
2636 |
|
f.complete(v1); |
2637 |
|
final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]); |
2638 |
|
final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]); |
2639 |
< |
checkCompletedWithWrappedCFException(h0); |
2640 |
< |
checkCompletedWithWrappedCFException(h1); |
2641 |
< |
checkCompletedWithWrappedCFException(h2); |
2642 |
< |
checkCompletedWithWrappedCFException(h3); |
2639 |
> |
checkCompletedWithWrappedException(h0, rs[0].ex); |
2640 |
> |
checkCompletedWithWrappedException(h1, rs[1].ex); |
2641 |
> |
checkCompletedWithWrappedException(h2, rs[2].ex); |
2642 |
> |
checkCompletedWithWrappedException(h3, rs[3].ex); |
2643 |
|
for (int i = 0; i < 4; i++) rs[i].assertValue(v1); |
2644 |
|
|
2645 |
|
g.complete(v2); |
2648 |
|
final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]); |
2649 |
|
final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]); |
2650 |
|
|
2651 |
< |
checkCompletedWithWrappedCFException(h4); |
2651 |
> |
checkCompletedWithWrappedException(h4, rs[4].ex); |
2652 |
|
assertTrue(Objects.equals(v1, rs[4].value) || |
2653 |
|
Objects.equals(v2, rs[4].value)); |
2654 |
< |
checkCompletedWithWrappedCFException(h5); |
2654 |
> |
checkCompletedWithWrappedException(h5, rs[5].ex); |
2655 |
|
assertTrue(Objects.equals(v1, rs[5].value) || |
2656 |
|
Objects.equals(v2, rs[5].value)); |
2657 |
|
|
2891 |
|
assertTrue(f.complete(v1)); |
2892 |
|
final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]); |
2893 |
|
final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]); |
2894 |
< |
checkCompletedWithWrappedCFException(h0); |
2895 |
< |
checkCompletedWithWrappedCFException(h1); |
2896 |
< |
checkCompletedWithWrappedCFException(h2); |
2897 |
< |
checkCompletedWithWrappedCFException(h3); |
2894 |
> |
checkCompletedWithWrappedException(h0, rs[0].ex); |
2895 |
> |
checkCompletedWithWrappedException(h1, rs[1].ex); |
2896 |
> |
checkCompletedWithWrappedException(h2, rs[2].ex); |
2897 |
> |
checkCompletedWithWrappedException(h3, rs[3].ex); |
2898 |
|
for (int i = 0; i < 4; i++) rs[i].assertInvoked(); |
2899 |
|
assertTrue(g.complete(v2)); |
2900 |
|
final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]); |
2901 |
|
final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]); |
2902 |
< |
checkCompletedWithWrappedCFException(h4); |
2903 |
< |
checkCompletedWithWrappedCFException(h5); |
2902 |
> |
checkCompletedWithWrappedException(h4, rs[4].ex); |
2903 |
> |
checkCompletedWithWrappedException(h5, rs[5].ex); |
2904 |
|
|
2905 |
|
checkCompletedNormally(f, v1); |
2906 |
|
checkCompletedNormally(g, v2); |
2961 |
|
final CompletableFuture<Integer> g = m.thenCompose(f, r); |
2962 |
|
if (createIncomplete) assertTrue(f.complete(v1)); |
2963 |
|
|
2964 |
< |
checkCompletedWithWrappedCFException(g); |
2964 |
> |
checkCompletedWithWrappedException(g, r.ex); |
2965 |
|
checkCompletedNormally(f, v1); |
2966 |
|
}} |
2967 |
|
|
3070 |
|
} |
3071 |
|
} |
3072 |
|
|
3073 |
< |
public void testAllOf_backwards() throws Exception { |
3073 |
> |
public void testAllOf_normal_backwards() throws Exception { |
3074 |
|
for (int k = 1; k < 10; k++) { |
3075 |
|
CompletableFuture<Integer>[] fs |
3076 |
|
= (CompletableFuture<Integer>[]) new CompletableFuture[k]; |
3303 |
|
() -> f.obtrudeException(null), |
3304 |
|
|
3305 |
|
() -> CompletableFuture.delayedExecutor(1L, SECONDS, null), |
3306 |
< |
() -> CompletableFuture.delayedExecutor(1L, null, new ThreadExecutor()), |
3306 |
> |
() -> CompletableFuture.delayedExecutor(1L, null, exec), |
3307 |
|
() -> CompletableFuture.delayedExecutor(1L, null), |
3308 |
|
|
3309 |
|
() -> f.orTimeout(1L, null), |
3318 |
|
} |
3319 |
|
|
3320 |
|
/** |
3321 |
+ |
* Test submissions to an executor that rejects all tasks. |
3322 |
+ |
*/ |
3323 |
+ |
public void testRejectingExecutor() { |
3324 |
+ |
final RejectedExecutionException ex = new RejectedExecutionException(); |
3325 |
+ |
final Executor e = (Runnable r) -> { throw ex; }; |
3326 |
+ |
|
3327 |
+ |
for (Integer v : new Integer[] { 1, null }) { |
3328 |
+ |
|
3329 |
+ |
final CompletableFuture<Integer> complete = CompletableFuture.completedFuture(v); |
3330 |
+ |
final CompletableFuture<Integer> incomplete = new CompletableFuture<>(); |
3331 |
+ |
|
3332 |
+ |
List<CompletableFuture<?>> futures = new ArrayList<>(); |
3333 |
+ |
|
3334 |
+ |
List<CompletableFuture<Integer>> srcs = new ArrayList<>(); |
3335 |
+ |
srcs.add(complete); |
3336 |
+ |
srcs.add(incomplete); |
3337 |
+ |
|
3338 |
+ |
for (CompletableFuture<Integer> src : srcs) { |
3339 |
+ |
List<CompletableFuture<?>> fs = new ArrayList<>(); |
3340 |
+ |
fs.add(src.thenRunAsync(() -> {}, e)); |
3341 |
+ |
fs.add(src.thenAcceptAsync((z) -> {}, e)); |
3342 |
+ |
fs.add(src.thenApplyAsync((z) -> z, e)); |
3343 |
+ |
|
3344 |
+ |
fs.add(src.thenCombineAsync(src, (x, y) -> x, e)); |
3345 |
+ |
fs.add(src.thenAcceptBothAsync(src, (x, y) -> {}, e)); |
3346 |
+ |
fs.add(src.runAfterBothAsync(src, () -> {}, e)); |
3347 |
+ |
|
3348 |
+ |
fs.add(src.applyToEitherAsync(src, (z) -> z, e)); |
3349 |
+ |
fs.add(src.acceptEitherAsync(src, (z) -> {}, e)); |
3350 |
+ |
fs.add(src.runAfterEitherAsync(src, () -> {}, e)); |
3351 |
+ |
|
3352 |
+ |
fs.add(src.thenComposeAsync((z) -> null, e)); |
3353 |
+ |
fs.add(src.whenCompleteAsync((z, t) -> {}, e)); |
3354 |
+ |
fs.add(src.handleAsync((z, t) -> null, e)); |
3355 |
+ |
|
3356 |
+ |
for (CompletableFuture<?> future : fs) { |
3357 |
+ |
if (src.isDone()) |
3358 |
+ |
checkCompletedWithWrappedException(future, ex); |
3359 |
+ |
else |
3360 |
+ |
checkIncomplete(future); |
3361 |
+ |
} |
3362 |
+ |
futures.addAll(fs); |
3363 |
+ |
} |
3364 |
+ |
|
3365 |
+ |
{ |
3366 |
+ |
List<CompletableFuture<?>> fs = new ArrayList<>(); |
3367 |
+ |
|
3368 |
+ |
fs.add(complete.thenCombineAsync(incomplete, (x, y) -> x, e)); |
3369 |
+ |
fs.add(incomplete.thenCombineAsync(complete, (x, y) -> x, e)); |
3370 |
+ |
|
3371 |
+ |
fs.add(complete.thenAcceptBothAsync(incomplete, (x, y) -> {}, e)); |
3372 |
+ |
fs.add(incomplete.thenAcceptBothAsync(complete, (x, y) -> {}, e)); |
3373 |
+ |
|
3374 |
+ |
fs.add(complete.runAfterBothAsync(incomplete, () -> {}, e)); |
3375 |
+ |
fs.add(incomplete.runAfterBothAsync(complete, () -> {}, e)); |
3376 |
+ |
|
3377 |
+ |
for (CompletableFuture<?> future : fs) |
3378 |
+ |
checkIncomplete(future); |
3379 |
+ |
futures.addAll(fs); |
3380 |
+ |
} |
3381 |
+ |
|
3382 |
+ |
{ |
3383 |
+ |
List<CompletableFuture<?>> fs = new ArrayList<>(); |
3384 |
+ |
|
3385 |
+ |
fs.add(complete.applyToEitherAsync(incomplete, (z) -> z, e)); |
3386 |
+ |
fs.add(incomplete.applyToEitherAsync(complete, (z) -> z, e)); |
3387 |
+ |
|
3388 |
+ |
fs.add(complete.acceptEitherAsync(incomplete, (z) -> {}, e)); |
3389 |
+ |
fs.add(incomplete.acceptEitherAsync(complete, (z) -> {}, e)); |
3390 |
+ |
|
3391 |
+ |
fs.add(complete.runAfterEitherAsync(incomplete, () -> {}, e)); |
3392 |
+ |
fs.add(incomplete.runAfterEitherAsync(complete, () -> {}, e)); |
3393 |
+ |
|
3394 |
+ |
for (CompletableFuture<?> future : fs) |
3395 |
+ |
checkCompletedWithWrappedException(future, ex); |
3396 |
+ |
futures.addAll(fs); |
3397 |
+ |
} |
3398 |
+ |
|
3399 |
+ |
incomplete.complete(v); |
3400 |
+ |
|
3401 |
+ |
for (CompletableFuture<?> future : futures) |
3402 |
+ |
checkCompletedWithWrappedException(future, ex); |
3403 |
+ |
} |
3404 |
+ |
} |
3405 |
+ |
|
3406 |
+ |
/** |
3407 |
+ |
* Test submissions to an executor that rejects all tasks, but |
3408 |
+ |
* should never be invoked because the dependent future is |
3409 |
+ |
* explicitly completed. |
3410 |
+ |
*/ |
3411 |
+ |
public void testRejectingExecutorNeverInvoked() { |
3412 |
+ |
final RejectedExecutionException ex = new RejectedExecutionException(); |
3413 |
+ |
class CountingRejectingExecutor implements Executor { |
3414 |
+ |
final AtomicInteger count = new AtomicInteger(0); |
3415 |
+ |
public void execute(Runnable r) { |
3416 |
+ |
count.getAndIncrement(); |
3417 |
+ |
throw ex; |
3418 |
+ |
} |
3419 |
+ |
} |
3420 |
+ |
final CountingRejectingExecutor e = new CountingRejectingExecutor(); |
3421 |
+ |
|
3422 |
+ |
for (Integer v : new Integer[] { 1, null }) { |
3423 |
+ |
|
3424 |
+ |
final CompletableFuture<Integer> complete = CompletableFuture.completedFuture(v); |
3425 |
+ |
final CompletableFuture<Integer> incomplete = new CompletableFuture<>(); |
3426 |
+ |
|
3427 |
+ |
List<CompletableFuture<?>> futures = new ArrayList<>(); |
3428 |
+ |
|
3429 |
+ |
List<CompletableFuture<Integer>> srcs = new ArrayList<>(); |
3430 |
+ |
srcs.add(complete); |
3431 |
+ |
srcs.add(incomplete); |
3432 |
+ |
|
3433 |
+ |
List<CompletableFuture<?>> fs = new ArrayList<>(); |
3434 |
+ |
fs.add(incomplete.thenRunAsync(() -> {}, e)); |
3435 |
+ |
fs.add(incomplete.thenAcceptAsync((z) -> {}, e)); |
3436 |
+ |
fs.add(incomplete.thenApplyAsync((z) -> z, e)); |
3437 |
+ |
|
3438 |
+ |
fs.add(incomplete.thenCombineAsync(incomplete, (x, y) -> x, e)); |
3439 |
+ |
fs.add(incomplete.thenAcceptBothAsync(incomplete, (x, y) -> {}, e)); |
3440 |
+ |
fs.add(incomplete.runAfterBothAsync(incomplete, () -> {}, e)); |
3441 |
+ |
|
3442 |
+ |
fs.add(incomplete.applyToEitherAsync(incomplete, (z) -> z, e)); |
3443 |
+ |
fs.add(incomplete.acceptEitherAsync(incomplete, (z) -> {}, e)); |
3444 |
+ |
fs.add(incomplete.runAfterEitherAsync(incomplete, () -> {}, e)); |
3445 |
+ |
|
3446 |
+ |
fs.add(incomplete.thenComposeAsync((z) -> null, e)); |
3447 |
+ |
fs.add(incomplete.whenCompleteAsync((z, t) -> {}, e)); |
3448 |
+ |
fs.add(incomplete.handleAsync((z, t) -> null, e)); |
3449 |
+ |
|
3450 |
+ |
fs.add(complete.thenCombineAsync(incomplete, (x, y) -> x, e)); |
3451 |
+ |
fs.add(incomplete.thenCombineAsync(complete, (x, y) -> x, e)); |
3452 |
+ |
|
3453 |
+ |
fs.add(complete.thenAcceptBothAsync(incomplete, (x, y) -> {}, e)); |
3454 |
+ |
fs.add(incomplete.thenAcceptBothAsync(complete, (x, y) -> {}, e)); |
3455 |
+ |
|
3456 |
+ |
fs.add(complete.runAfterBothAsync(incomplete, () -> {}, e)); |
3457 |
+ |
fs.add(incomplete.runAfterBothAsync(complete, () -> {}, e)); |
3458 |
+ |
|
3459 |
+ |
for (CompletableFuture<?> future : fs) |
3460 |
+ |
checkIncomplete(future); |
3461 |
+ |
|
3462 |
+ |
for (CompletableFuture<?> future : fs) |
3463 |
+ |
future.complete(null); |
3464 |
+ |
|
3465 |
+ |
incomplete.complete(v); |
3466 |
+ |
|
3467 |
+ |
for (CompletableFuture<?> future : fs) |
3468 |
+ |
checkCompletedNormally(future, null); |
3469 |
+ |
|
3470 |
+ |
assertEquals(0, e.count.get()); |
3471 |
+ |
|
3472 |
+ |
} |
3473 |
+ |
} |
3474 |
+ |
|
3475 |
+ |
/** |
3476 |
|
* toCompletableFuture returns this CompletableFuture. |
3477 |
|
*/ |
3478 |
|
public void testToCompletableFuture() { |
3688 |
|
long timeoutMillis = timeoutMillis(); |
3689 |
|
CompletableFuture<Integer> f = new CompletableFuture<>(); |
3690 |
|
long startTime = System.nanoTime(); |
3691 |
< |
f.orTimeout(timeoutMillis, MILLISECONDS); |
3691 |
> |
assertSame(f, f.orTimeout(timeoutMillis, MILLISECONDS)); |
3692 |
|
checkCompletedWithTimeoutException(f); |
3693 |
|
assertTrue(millisElapsedSince(startTime) >= timeoutMillis); |
3694 |
|
} |
3703 |
|
CompletableFuture<Integer> g = new CompletableFuture<>(); |
3704 |
|
long startTime = System.nanoTime(); |
3705 |
|
f.complete(v1); |
3706 |
< |
f.orTimeout(LONG_DELAY_MS, MILLISECONDS); |
3707 |
< |
g.orTimeout(LONG_DELAY_MS, MILLISECONDS); |
3706 |
> |
assertSame(f, f.orTimeout(LONG_DELAY_MS, MILLISECONDS)); |
3707 |
> |
assertSame(g, g.orTimeout(LONG_DELAY_MS, MILLISECONDS)); |
3708 |
|
g.complete(v1); |
3709 |
|
checkCompletedNormally(f, v1); |
3710 |
|
checkCompletedNormally(g, v1); |
3719 |
|
() -> testCompleteOnTimeout_timesOut(null)); |
3720 |
|
} |
3721 |
|
|
3722 |
+ |
/** |
3723 |
+ |
* completeOnTimeout completes with given value if not complete |
3724 |
+ |
*/ |
3725 |
|
public void testCompleteOnTimeout_timesOut(Integer v) { |
3726 |
|
long timeoutMillis = timeoutMillis(); |
3727 |
|
CompletableFuture<Integer> f = new CompletableFuture<>(); |
3728 |
|
long startTime = System.nanoTime(); |
3729 |
< |
f.completeOnTimeout(v, timeoutMillis, MILLISECONDS); |
3729 |
> |
assertSame(f, f.completeOnTimeout(v, timeoutMillis, MILLISECONDS)); |
3730 |
|
assertSame(v, f.join()); |
3731 |
|
assertTrue(millisElapsedSince(startTime) >= timeoutMillis); |
3732 |
|
f.complete(99); // should have no effect |
3743 |
|
CompletableFuture<Integer> g = new CompletableFuture<>(); |
3744 |
|
long startTime = System.nanoTime(); |
3745 |
|
f.complete(v1); |
3746 |
< |
f.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS); |
3747 |
< |
g.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS); |
3746 |
> |
assertSame(f, f.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS)); |
3747 |
> |
assertSame(g, g.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS)); |
3748 |
|
g.complete(v1); |
3749 |
|
checkCompletedNormally(f, v1); |
3750 |
|
checkCompletedNormally(g, v1); |
3795 |
|
//--- tests of implementation details; not part of official tck --- |
3796 |
|
|
3797 |
|
Object resultOf(CompletableFuture<?> f) { |
3798 |
+ |
SecurityManager sm = System.getSecurityManager(); |
3799 |
+ |
if (sm != null) { |
3800 |
+ |
try { |
3801 |
+ |
System.setSecurityManager(null); |
3802 |
+ |
} catch (SecurityException giveUp) { |
3803 |
+ |
return "Reflection not available"; |
3804 |
+ |
} |
3805 |
+ |
} |
3806 |
+ |
|
3807 |
|
try { |
3808 |
|
java.lang.reflect.Field resultField |
3809 |
|
= CompletableFuture.class.getDeclaredField("result"); |
3810 |
|
resultField.setAccessible(true); |
3811 |
|
return resultField.get(f); |
3812 |
< |
} catch (Throwable t) { throw new AssertionError(t); } |
3812 |
> |
} catch (Throwable t) { |
3813 |
> |
throw new AssertionError(t); |
3814 |
> |
} finally { |
3815 |
> |
if (sm != null) System.setSecurityManager(sm); |
3816 |
> |
} |
3817 |
|
} |
3818 |
|
|
3819 |
|
public void testExceptionPropagationReusesResultObject() { |
3836 |
|
funs.add((y) -> m.applyToEither(y, incomplete, new IncFunction(m))); |
3837 |
|
|
3838 |
|
funs.add((y) -> m.runAfterBoth(y, v42, new Noop(m))); |
3839 |
+ |
funs.add((y) -> m.runAfterBoth(v42, y, new Noop(m))); |
3840 |
|
funs.add((y) -> m.thenAcceptBoth(y, v42, new SubtractAction(m))); |
3841 |
+ |
funs.add((y) -> m.thenAcceptBoth(v42, y, new SubtractAction(m))); |
3842 |
|
funs.add((y) -> m.thenCombine(y, v42, new SubtractFunction(m))); |
3843 |
+ |
funs.add((y) -> m.thenCombine(v42, y, new SubtractFunction(m))); |
3844 |
|
|
3845 |
< |
funs.add((y) -> m.whenComplete(y, (Integer x, Throwable t) -> {})); |
3845 |
> |
funs.add((y) -> m.whenComplete(y, (Integer r, Throwable t) -> {})); |
3846 |
|
|
3847 |
|
funs.add((y) -> m.thenCompose(y, new CompletableFutureInc(m))); |
3848 |
|
|
3849 |
+ |
funs.add((y) -> CompletableFuture.allOf(new CompletableFuture<?>[] {y})); |
3850 |
|
funs.add((y) -> CompletableFuture.allOf(new CompletableFuture<?>[] {y, v42})); |
3851 |
+ |
funs.add((y) -> CompletableFuture.allOf(new CompletableFuture<?>[] {v42, y})); |
3852 |
+ |
funs.add((y) -> CompletableFuture.anyOf(new CompletableFuture<?>[] {y})); |
3853 |
|
funs.add((y) -> CompletableFuture.anyOf(new CompletableFuture<?>[] {y, incomplete})); |
3854 |
+ |
funs.add((y) -> CompletableFuture.anyOf(new CompletableFuture<?>[] {incomplete, y})); |
3855 |
|
|
3856 |
|
for (Function<CompletableFuture<Integer>, CompletableFuture<?>> |
3857 |
|
fun : funs) { |
3966 |
|
} |
3967 |
|
|
3968 |
|
static class Monad { |
3969 |
< |
static class MonadError extends Error { |
3970 |
< |
public MonadError() { super("monadic zero"); } |
3969 |
> |
static class ZeroException extends RuntimeException { |
3970 |
> |
public ZeroException() { super("monadic zero"); } |
3971 |
|
} |
3972 |
|
// "return", "unit" |
3973 |
|
static <T> CompletableFuture<T> unit(T value) { |
3975 |
|
} |
3976 |
|
// monadic zero ? |
3977 |
|
static <T> CompletableFuture<T> zero() { |
3978 |
< |
return failedFuture(new MonadError()); |
3978 |
> |
return failedFuture(new ZeroException()); |
3979 |
|
} |
3980 |
|
// >=> |
3981 |
|
static <T,U,V> Function<T, CompletableFuture<V>> compose |
3989 |
|
f.getNow(null); |
3990 |
|
throw new AssertionFailedError("should throw"); |
3991 |
|
} catch (CompletionException success) { |
3992 |
< |
assertTrue(success.getCause() instanceof MonadError); |
3992 |
> |
assertTrue(success.getCause() instanceof ZeroException); |
3993 |
|
} |
3994 |
|
} |
3995 |
|
|
4016 |
|
AtomicReference<Throwable> firstFailure = new AtomicReference<>(null); |
4017 |
|
} |
4018 |
|
|
4019 |
< |
// Monadic "plus" |
4019 |
> |
/** Implements "monadic plus". */ |
4020 |
|
static <T> CompletableFuture<T> plus(CompletableFuture<? extends T> f, |
4021 |
|
CompletableFuture<? extends T> g) { |
4022 |
|
PlusFuture<T> plus = new PlusFuture<T>(); |
4023 |
|
BiConsumer<T, Throwable> action = (T result, Throwable ex) -> { |
4024 |
< |
if (result != null) { |
4025 |
< |
if (plus.complete(result)) |
4026 |
< |
if (plus.firstFailure.get() != null) |
4024 |
> |
try { |
4025 |
> |
if (ex == null) { |
4026 |
> |
if (plus.complete(result)) |
4027 |
> |
if (plus.firstFailure.get() != null) |
4028 |
> |
plus.firstFailure.set(null); |
4029 |
> |
} |
4030 |
> |
else if (plus.firstFailure.compareAndSet(null, ex)) { |
4031 |
> |
if (plus.isDone()) |
4032 |
|
plus.firstFailure.set(null); |
4033 |
< |
} |
4034 |
< |
else if (plus.firstFailure.compareAndSet(null, ex)) { |
4035 |
< |
if (plus.isDone()) |
4036 |
< |
plus.firstFailure.set(null); |
4037 |
< |
} else { |
4038 |
< |
if (plus.completeExceptionally(ex)) |
4039 |
< |
plus.firstFailure.set(null); |
4033 |
> |
} |
4034 |
> |
else { |
4035 |
> |
// first failure has precedence |
4036 |
> |
Throwable first = plus.firstFailure.getAndSet(null); |
4037 |
> |
|
4038 |
> |
// may fail with "Self-suppression not permitted" |
4039 |
> |
try { first.addSuppressed(ex); } |
4040 |
> |
catch (Exception ignored) {} |
4041 |
> |
|
4042 |
> |
plus.completeExceptionally(first); |
4043 |
> |
} |
4044 |
> |
} catch (Throwable unexpected) { |
4045 |
> |
plus.completeExceptionally(unexpected); |
4046 |
|
} |
4047 |
|
}; |
4048 |
|
f.whenComplete(action); |
4111 |
|
Monad.plus(godot, Monad.unit(5L))); |
4112 |
|
} |
4113 |
|
|
4114 |
+ |
/** |
4115 |
+ |
* A single CompletableFuture with many dependents. |
4116 |
+ |
* A demo of scalability - runtime is O(n). |
4117 |
+ |
*/ |
4118 |
+ |
public void testManyDependents() throws Throwable { |
4119 |
+ |
final int n = 1_000; |
4120 |
+ |
final CompletableFuture<Void> head = new CompletableFuture<>(); |
4121 |
+ |
final CompletableFuture<Void> complete = CompletableFuture.completedFuture((Void)null); |
4122 |
+ |
final AtomicInteger count = new AtomicInteger(0); |
4123 |
+ |
for (int i = 0; i < n; i++) { |
4124 |
+ |
head.thenRun(() -> count.getAndIncrement()); |
4125 |
+ |
head.thenAccept((x) -> count.getAndIncrement()); |
4126 |
+ |
head.thenApply((x) -> count.getAndIncrement()); |
4127 |
+ |
|
4128 |
+ |
head.runAfterBoth(complete, () -> count.getAndIncrement()); |
4129 |
+ |
head.thenAcceptBoth(complete, (x, y) -> count.getAndIncrement()); |
4130 |
+ |
head.thenCombine(complete, (x, y) -> count.getAndIncrement()); |
4131 |
+ |
complete.runAfterBoth(head, () -> count.getAndIncrement()); |
4132 |
+ |
complete.thenAcceptBoth(head, (x, y) -> count.getAndIncrement()); |
4133 |
+ |
complete.thenCombine(head, (x, y) -> count.getAndIncrement()); |
4134 |
+ |
|
4135 |
+ |
head.runAfterEither(new CompletableFuture<Void>(), () -> count.getAndIncrement()); |
4136 |
+ |
head.acceptEither(new CompletableFuture<Void>(), (x) -> count.getAndIncrement()); |
4137 |
+ |
head.applyToEither(new CompletableFuture<Void>(), (x) -> count.getAndIncrement()); |
4138 |
+ |
new CompletableFuture<Void>().runAfterEither(head, () -> count.getAndIncrement()); |
4139 |
+ |
new CompletableFuture<Void>().acceptEither(head, (x) -> count.getAndIncrement()); |
4140 |
+ |
new CompletableFuture<Void>().applyToEither(head, (x) -> count.getAndIncrement()); |
4141 |
+ |
} |
4142 |
+ |
head.complete(null); |
4143 |
+ |
assertEquals(5 * 3 * n, count.get()); |
4144 |
+ |
} |
4145 |
+ |
|
4146 |
|
// static <U> U join(CompletionStage<U> stage) { |
4147 |
|
// CompletableFuture<U> f = new CompletableFuture<>(); |
4148 |
|
// stage.whenComplete((v, ex) -> { |