32 |
|
import java.util.concurrent.ForkJoinTask; |
33 |
|
import java.util.concurrent.RejectedExecutionException; |
34 |
|
import java.util.concurrent.TimeoutException; |
35 |
– |
import java.util.concurrent.TimeUnit; |
35 |
|
import java.util.concurrent.atomic.AtomicInteger; |
36 |
|
import java.util.concurrent.atomic.AtomicReference; |
37 |
|
import java.util.function.BiConsumer; |
361 |
|
checkCompletedNormally(f, "test"); |
362 |
|
} |
363 |
|
|
364 |
< |
abstract class CheckedAction { |
364 |
> |
abstract static class CheckedAction { |
365 |
|
int invocationCount = 0; |
366 |
|
final ExecutionMode m; |
367 |
|
CheckedAction(ExecutionMode m) { this.m = m; } |
373 |
|
void assertInvoked() { assertEquals(1, invocationCount); } |
374 |
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} |
375 |
|
|
376 |
< |
abstract class CheckedIntegerAction extends CheckedAction { |
376 |
> |
abstract static class CheckedIntegerAction extends CheckedAction { |
377 |
|
Integer value; |
378 |
|
CheckedIntegerAction(ExecutionMode m) { super(m); } |
379 |
|
void assertValue(Integer expected) { |
382 |
|
} |
383 |
|
} |
384 |
|
|
385 |
< |
class IntegerSupplier extends CheckedAction |
385 |
> |
static class IntegerSupplier extends CheckedAction |
386 |
|
implements Supplier<Integer> |
387 |
|
{ |
388 |
|
final Integer value; |
401 |
|
return (x == null) ? null : x + 1; |
402 |
|
} |
403 |
|
|
404 |
< |
class NoopConsumer extends CheckedIntegerAction |
404 |
> |
static class NoopConsumer extends CheckedIntegerAction |
405 |
|
implements Consumer<Integer> |
406 |
|
{ |
407 |
|
NoopConsumer(ExecutionMode m) { super(m); } |
411 |
|
} |
412 |
|
} |
413 |
|
|
414 |
< |
class IncFunction extends CheckedIntegerAction |
414 |
> |
static class IncFunction extends CheckedIntegerAction |
415 |
|
implements Function<Integer,Integer> |
416 |
|
{ |
417 |
|
IncFunction(ExecutionMode m) { super(m); } |
429 |
|
- ((y == null) ? 99 : y.intValue()); |
430 |
|
} |
431 |
|
|
432 |
< |
class SubtractAction extends CheckedIntegerAction |
432 |
> |
static class SubtractAction extends CheckedIntegerAction |
433 |
|
implements BiConsumer<Integer, Integer> |
434 |
|
{ |
435 |
|
SubtractAction(ExecutionMode m) { super(m); } |
439 |
|
} |
440 |
|
} |
441 |
|
|
442 |
< |
class SubtractFunction extends CheckedIntegerAction |
442 |
> |
static class SubtractFunction extends CheckedIntegerAction |
443 |
|
implements BiFunction<Integer, Integer, Integer> |
444 |
|
{ |
445 |
|
SubtractFunction(ExecutionMode m) { super(m); } |
449 |
|
} |
450 |
|
} |
451 |
|
|
452 |
< |
class Noop extends CheckedAction implements Runnable { |
452 |
> |
static class Noop extends CheckedAction implements Runnable { |
453 |
|
Noop(ExecutionMode m) { super(m); } |
454 |
|
public void run() { |
455 |
|
invoked(); |
456 |
|
} |
457 |
|
} |
458 |
|
|
459 |
< |
class FailingSupplier extends CheckedAction |
459 |
> |
static class FailingSupplier extends CheckedAction |
460 |
|
implements Supplier<Integer> |
461 |
|
{ |
462 |
|
final CFException ex; |
467 |
|
} |
468 |
|
} |
469 |
|
|
470 |
< |
class FailingConsumer extends CheckedIntegerAction |
470 |
> |
static class FailingConsumer extends CheckedIntegerAction |
471 |
|
implements Consumer<Integer> |
472 |
|
{ |
473 |
|
final CFException ex; |
479 |
|
} |
480 |
|
} |
481 |
|
|
482 |
< |
class FailingBiConsumer extends CheckedIntegerAction |
482 |
> |
static class FailingBiConsumer extends CheckedIntegerAction |
483 |
|
implements BiConsumer<Integer, Integer> |
484 |
|
{ |
485 |
|
final CFException ex; |
491 |
|
} |
492 |
|
} |
493 |
|
|
494 |
< |
class FailingFunction extends CheckedIntegerAction |
494 |
> |
static class FailingFunction extends CheckedIntegerAction |
495 |
|
implements Function<Integer, Integer> |
496 |
|
{ |
497 |
|
final CFException ex; |
503 |
|
} |
504 |
|
} |
505 |
|
|
506 |
< |
class FailingBiFunction extends CheckedIntegerAction |
506 |
> |
static class FailingBiFunction extends CheckedIntegerAction |
507 |
|
implements BiFunction<Integer, Integer, Integer> |
508 |
|
{ |
509 |
|
final CFException ex; |
515 |
|
} |
516 |
|
} |
517 |
|
|
518 |
< |
class FailingRunnable extends CheckedAction implements Runnable { |
518 |
> |
static class FailingRunnable extends CheckedAction implements Runnable { |
519 |
|
final CFException ex; |
520 |
|
FailingRunnable(ExecutionMode m) { super(m); ex = new CFException(); } |
521 |
|
public void run() { |
524 |
|
} |
525 |
|
} |
526 |
|
|
527 |
< |
class CompletableFutureInc extends CheckedIntegerAction |
527 |
> |
static class CompletableFutureInc extends CheckedIntegerAction |
528 |
|
implements Function<Integer, CompletableFuture<Integer>> |
529 |
|
{ |
530 |
|
CompletableFutureInc(ExecutionMode m) { super(m); } |
537 |
|
} |
538 |
|
} |
539 |
|
|
540 |
< |
class FailingCompletableFutureFunction extends CheckedIntegerAction |
540 |
> |
static class FailingCompletableFutureFunction extends CheckedIntegerAction |
541 |
|
implements Function<Integer, CompletableFuture<Integer>> |
542 |
|
{ |
543 |
|
final CFException ex; |
3964 |
|
.collect(Collectors.toList()); |
3965 |
|
|
3966 |
|
List<CompletionStage<Integer>> stages = new ArrayList<>(); |
3967 |
< |
stages.add(new CompletableFuture<Integer>().minimalCompletionStage()); |
3967 |
> |
CompletionStage<Integer> min = |
3968 |
> |
new CompletableFuture<Integer>().minimalCompletionStage(); |
3969 |
> |
stages.add(min); |
3970 |
> |
stages.add(min.thenApply(x -> x)); |
3971 |
|
stages.add(CompletableFuture.completedStage(1)); |
3972 |
|
stages.add(CompletableFuture.failedStage(new CFException())); |
3973 |
|
|
4003 |
|
throw new Error("Methods did not throw UOE: " + bugs); |
4004 |
|
} |
4005 |
|
|
4006 |
+ |
/** |
4007 |
+ |
* minimalStage.toCompletableFuture() gives mutable CompletableFuture |
4008 |
+ |
*/ |
4009 |
+ |
public void testMinimalCompletionStage_toCompletableFuture_mutable() { |
4010 |
+ |
for (Integer v1 : new Integer[] { 1, null }) |
4011 |
+ |
{ |
4012 |
+ |
CompletableFuture<Integer> f = new CompletableFuture<>(); |
4013 |
+ |
CompletionStage minimal = f.minimalCompletionStage(); |
4014 |
+ |
CompletableFuture<Integer> g = minimal.toCompletableFuture(); |
4015 |
+ |
g.complete(v1); |
4016 |
+ |
checkCompletedNormally(g, v1); |
4017 |
+ |
checkIncomplete(f); |
4018 |
+ |
checkIncomplete(minimal.toCompletableFuture()); |
4019 |
+ |
}} |
4020 |
+ |
|
4021 |
+ |
/** |
4022 |
+ |
* minimalStage.toCompletableFuture().join() awaits completion |
4023 |
+ |
*/ |
4024 |
+ |
public void testMinimalCompletionStage_toCompletableFuture_join() throws Exception { |
4025 |
+ |
for (boolean createIncomplete : new boolean[] { true, false }) |
4026 |
+ |
for (Integer v1 : new Integer[] { 1, null }) |
4027 |
+ |
{ |
4028 |
+ |
CompletableFuture<Integer> f = new CompletableFuture<>(); |
4029 |
+ |
if (!createIncomplete) assertTrue(f.complete(v1)); |
4030 |
+ |
CompletionStage<Integer> minimal = f.minimalCompletionStage(); |
4031 |
+ |
if (createIncomplete) assertTrue(f.complete(v1)); |
4032 |
+ |
assertEquals(v1, minimal.toCompletableFuture().join()); |
4033 |
+ |
assertEquals(v1, minimal.toCompletableFuture().get()); |
4034 |
+ |
checkCompletedNormally(minimal.toCompletableFuture(), v1); |
4035 |
+ |
}} |
4036 |
+ |
|
4037 |
+ |
/** Demo utility method for external reliable toCompletableFuture */ |
4038 |
+ |
static <T> CompletableFuture<T> toCompletableFuture(CompletionStage<T> stage) { |
4039 |
+ |
CompletableFuture<T> f = new CompletableFuture<>(); |
4040 |
+ |
stage.handle((T t, Throwable ex) -> { |
4041 |
+ |
if (ex != null) f.completeExceptionally(ex); |
4042 |
+ |
else f.complete(t); |
4043 |
+ |
return null; |
4044 |
+ |
}); |
4045 |
+ |
return f; |
4046 |
+ |
} |
4047 |
+ |
|
4048 |
+ |
/** Demo utility method to join a CompletionStage */ |
4049 |
+ |
static <T> T join(CompletionStage<T> stage) { |
4050 |
+ |
return toCompletableFuture(stage).join(); |
4051 |
+ |
} |
4052 |
+ |
|
4053 |
+ |
/** |
4054 |
+ |
* Joining a minimal stage "by hand" works |
4055 |
+ |
*/ |
4056 |
+ |
public void testMinimalCompletionStage_join_by_hand() { |
4057 |
+ |
for (boolean createIncomplete : new boolean[] { true, false }) |
4058 |
+ |
for (Integer v1 : new Integer[] { 1, null }) |
4059 |
+ |
{ |
4060 |
+ |
CompletableFuture<Integer> f = new CompletableFuture<>(); |
4061 |
+ |
CompletionStage<Integer> minimal = f.minimalCompletionStage(); |
4062 |
+ |
CompletableFuture<Integer> g = new CompletableFuture<>(); |
4063 |
+ |
if (!createIncomplete) assertTrue(f.complete(v1)); |
4064 |
+ |
minimal.thenAccept((x) -> g.complete(x)); |
4065 |
+ |
if (createIncomplete) assertTrue(f.complete(v1)); |
4066 |
+ |
g.join(); |
4067 |
+ |
checkCompletedNormally(g, v1); |
4068 |
+ |
checkCompletedNormally(f, v1); |
4069 |
+ |
assertEquals(v1, join(minimal)); |
4070 |
+ |
}} |
4071 |
+ |
|
4072 |
|
static class Monad { |
4073 |
|
static class ZeroException extends RuntimeException { |
4074 |
|
public ZeroException() { super("monadic zero"); } |