6 |
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package jsr166e; |
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import java.util.concurrent.Future; |
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+ |
import java.util.concurrent.FutureTask; |
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import java.util.concurrent.TimeUnit; |
11 |
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import java.util.concurrent.Executor; |
11 |
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import java.util.concurrent.ThreadLocalRandom; |
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import java.util.concurrent.ExecutionException; |
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import java.util.concurrent.TimeoutException; |
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import java.util.concurrent.CancellationException; |
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/** |
19 |
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* A {@link Future} that may be explicitly completed (setting its |
20 |
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* value and status), and may include dependent functions and actions |
21 |
< |
* that trigger upon its completion. Methods are available for adding |
22 |
< |
* those based on Functions, Blocks, and Runnables, depending on |
23 |
< |
* whether they require arguments and/or produce results, as well as |
24 |
< |
* those triggered after either or both the current and another |
25 |
< |
* CompletableFuture complete. Functions and actions supplied for |
26 |
< |
* dependent completions (mainly using methods with prefix {@code |
27 |
< |
* then}) may be performed by the thread that completes the current |
21 |
> |
* that trigger upon its completion. |
22 |
> |
* |
23 |
> |
* <p>When two or more threads attempt to |
24 |
> |
* {@link #complete complete}, |
25 |
> |
* {@link #completeExceptionally completeExceptionally}, or |
26 |
> |
* {@link #cancel cancel} |
27 |
> |
* a CompletableFuture, only one of them succeeds. |
28 |
> |
* |
29 |
> |
* <p>Methods are available for adding dependents based on |
30 |
> |
* user-provided Functions, Actions, or Runnables. The appropriate |
31 |
> |
* form to use depends on whether actions require arguments and/or |
32 |
> |
* produce results. Completion of a dependent action will trigger the |
33 |
> |
* completion of another CompletableFuture. Actions may also be |
34 |
> |
* triggered after either or both the current and another |
35 |
> |
* CompletableFuture complete. Multiple CompletableFutures may also |
36 |
> |
* be grouped as one using {@link #anyOf(CompletableFuture...)} and |
37 |
> |
* {@link #allOf(CompletableFuture...)}. |
38 |
> |
* |
39 |
> |
* <p>CompletableFutures themselves do not execute asynchronously. |
40 |
> |
* However, actions supplied for dependent completions of another |
41 |
> |
* CompletableFuture may do so, depending on whether they are provided |
42 |
> |
* via one of the <em>async</em> methods (that is, methods with names |
43 |
> |
* of the form <tt><var>xxx</var>Async</tt>). The <em>async</em> |
44 |
> |
* methods provide a way to commence asynchronous processing of an |
45 |
> |
* action using either a given {@link Executor} or by default the |
46 |
> |
* {@link ForkJoinPool#commonPool()}. To simplify monitoring, |
47 |
> |
* debugging, and tracking, all generated asynchronous tasks are |
48 |
> |
* instances of the marker interface {@link AsynchronousCompletionTask}. |
49 |
> |
* |
50 |
> |
* <p>Actions supplied for dependent completions of <em>non-async</em> |
51 |
> |
* methods may be performed by the thread that completes the current |
52 |
|
* CompletableFuture, or by any other caller of these methods. There |
53 |
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* are no guarantees about the order of processing completions unless |
54 |
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* constrained by these methods. |
55 |
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* |
56 |
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* <p>When two or more threads attempt to {@link #complete} or {@link |
57 |
< |
* #completeExceptionally} a CompletableFuture, only one of them |
58 |
< |
* succeeds. |
56 |
> |
* <p>Since (unlike {@link FutureTask}) this class has no direct |
57 |
> |
* control over the computation that causes it to be completed, |
58 |
> |
* cancellation is treated as just another form of exceptional completion. |
59 |
> |
* Method {@link #cancel cancel} has the same effect as |
60 |
> |
* {@code completeExceptionally(new CancellationException())}. |
61 |
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* |
62 |
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* <p>Upon exceptional completion, or when a completion entails |
63 |
< |
* computation of a function or action, and it terminates abruptly |
64 |
< |
* with an (unchecked) exception or error, then further completions |
65 |
< |
* act as {@code completeExceptionally} with a {@link |
66 |
< |
* CompletionException} holding that exception as its cause. If a |
67 |
< |
* CompletableFuture completes exceptionally, and is not followed by a |
68 |
< |
* {@link #exceptionally} or {@link #handle} completion, then all of |
69 |
< |
* its dependents (and their dependents) also complete exceptionally |
70 |
< |
* with CompletionExceptions holding the ultimate cause. In case of a |
45 |
< |
* CompletionException, methods {@link #get()} and {@link #get(long, |
46 |
< |
* TimeUnit)} throw an {@link ExecutionException} with the same cause |
47 |
< |
* as would be held in the corresponding CompletionException. However, |
48 |
< |
* in these cases, methods {@link #join()} and {@link #getNow} throw |
49 |
< |
* the CompletionException, which simplifies usage especially within |
50 |
< |
* other completion functions. |
62 |
> |
* <p>Upon exceptional completion (including cancellation), or when a |
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> |
* completion entails an additional computation which terminates |
64 |
> |
* abruptly with an (unchecked) exception or error, then all of their |
65 |
> |
* dependent completions (and their dependents in turn) generally act |
66 |
> |
* as {@code completeExceptionally} with a {@link CompletionException} |
67 |
> |
* holding that exception as its cause. However, the {@link |
68 |
> |
* #exceptionally exceptionally} and {@link #handle handle} |
69 |
> |
* completions <em>are</em> able to handle exceptional completions of |
70 |
> |
* the CompletableFutures they depend on. |
71 |
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* |
72 |
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* <p>CompletableFutures themselves do not execute asynchronously. |
73 |
< |
* However, the {@code async} methods provide commonly useful ways to |
74 |
< |
* commence asynchronous processing, using either a given {@link |
75 |
< |
* Executor} or by default the {@link ForkJoinPool#commonPool()}, of a |
76 |
< |
* function or action that will result in the completion of a new |
77 |
< |
* CompletableFuture. To simplify monitoring, debugging, and tracking, |
58 |
< |
* all generated asynchronous tasks are instances of the tagging |
59 |
< |
* interface {@link AsynchronousCompletionTask}. |
72 |
> |
* <p>In case of exceptional completion with a CompletionException, |
73 |
> |
* methods {@link #get()} and {@link #get(long, TimeUnit)} throw an |
74 |
> |
* {@link ExecutionException} with the same cause as held in the |
75 |
> |
* corresponding CompletionException. However, in these cases, |
76 |
> |
* methods {@link #join()} and {@link #getNow} throw the |
77 |
> |
* CompletionException, which simplifies usage. |
78 |
|
* |
79 |
< |
* <p><em>jsr166e note: During transition, this class |
80 |
< |
* uses nested functional interfaces with different names but the |
81 |
< |
* same forms as those expected for JDK8.</em> |
79 |
> |
* <p>Arguments used to pass a completion result (that is, for parameters |
80 |
> |
* of type {@code T}) may be null, but passing a null value for any other |
81 |
> |
* parameter will result in a {@link NullPointerException} being thrown. |
82 |
|
* |
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* @author Doug Lea |
66 |
– |
* @since 1.8 |
84 |
|
*/ |
85 |
|
public class CompletableFuture<T> implements Future<T> { |
86 |
|
// jsr166e nested interfaces |
100 |
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/* |
101 |
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* Overview: |
102 |
|
* |
103 |
< |
* 1. Non-nullness of field result (set via CAS) indicates |
104 |
< |
* done. An AltResult is used to box null as a result, as well as |
105 |
< |
* to hold exceptions. Using a single field makes completion fast |
103 |
> |
* 1. Non-nullness of field result (set via CAS) indicates done. |
104 |
> |
* An AltResult is used to box null as a result, as well as to |
105 |
> |
* hold exceptions. Using a single field makes completion fast |
106 |
|
* and simple to detect and trigger, at the expense of a lot of |
107 |
|
* encoding and decoding that infiltrates many methods. One minor |
108 |
|
* simplification relies on the (static) NIL (to box null results) |
127 |
|
* extends AtomicInteger so callers can claim the action via |
128 |
|
* compareAndSet(0, 1). The Completion.run methods are all |
129 |
|
* written a boringly similar uniform way (that sometimes includes |
130 |
< |
* unnecessary-looking checks, kept to maintain uniformity). There |
131 |
< |
* are enough dimensions upon which they differ that factoring to |
132 |
< |
* use common code isn't worthwhile. |
130 |
> |
* unnecessary-looking checks, kept to maintain uniformity). |
131 |
> |
* There are enough dimensions upon which they differ that |
132 |
> |
* attempts to factor commonalities while maintaining efficiency |
133 |
> |
* require more lines of code than they would save. |
134 |
|
* |
135 |
|
* 4. The exported then/and/or methods do support a bit of |
136 |
|
* factoring (see doThenApply etc). They must cope with the |
187 |
|
* CompletionException unless it is one already. Otherwise uses |
188 |
|
* the given result, boxed as NIL if null. |
189 |
|
*/ |
190 |
< |
final void internalComplete(Object v, Throwable ex) { |
190 |
> |
final void internalComplete(T v, Throwable ex) { |
191 |
|
if (result == null) |
192 |
|
UNSAFE.compareAndSwapObject |
193 |
|
(this, RESULT, null, |
207 |
|
|
208 |
|
/* ------------- waiting for completions -------------- */ |
209 |
|
|
210 |
+ |
/** Number of processors, for spin control */ |
211 |
+ |
static final int NCPU = Runtime.getRuntime().availableProcessors(); |
212 |
+ |
|
213 |
|
/** |
214 |
|
* Heuristic spin value for waitingGet() before blocking on |
215 |
|
* multiprocessors |
216 |
|
*/ |
217 |
< |
static final int WAITING_GET_SPINS = 256; |
217 |
> |
static final int SPINS = (NCPU > 1) ? 1 << 8 : 0; |
218 |
|
|
219 |
|
/** |
220 |
|
* Linked nodes to record waiting threads in a Treiber stack. See |
269 |
|
private Object waitingGet(boolean interruptible) { |
270 |
|
WaitNode q = null; |
271 |
|
boolean queued = false; |
272 |
< |
int h = 0, spins = 0; |
272 |
> |
int spins = SPINS; |
273 |
|
for (Object r;;) { |
274 |
|
if ((r = result) != null) { |
275 |
|
if (q != null) { // suppress unpark |
285 |
|
postComplete(); // help release others |
286 |
|
return r; |
287 |
|
} |
267 |
– |
else if (h == 0) { |
268 |
– |
h = ThreadLocalRandom.current().nextInt(); |
269 |
– |
if (Runtime.getRuntime().availableProcessors() > 1) |
270 |
– |
spins = WAITING_GET_SPINS; |
271 |
– |
} |
288 |
|
else if (spins > 0) { |
289 |
< |
h ^= h << 1; // xorshift |
290 |
< |
h ^= h >>> 3; |
275 |
< |
if ((h ^= h << 10) >= 0) |
289 |
> |
int rnd = ThreadLocalRandom.current().nextInt(); |
290 |
> |
if (rnd >= 0) |
291 |
|
--spins; |
292 |
|
} |
293 |
|
else if (q == null) |
302 |
|
else if (q.thread != null && result == null) { |
303 |
|
try { |
304 |
|
ForkJoinPool.managedBlock(q); |
305 |
< |
} catch(InterruptedException ex){ |
305 |
> |
} catch (InterruptedException ex) { |
306 |
|
q.interruptControl = -1; |
307 |
|
} |
308 |
|
} |
335 |
|
if (nanos <= 0L) |
336 |
|
throw new TimeoutException(); |
337 |
|
long d = System.nanoTime() + nanos; |
338 |
< |
q = new WaitNode(true, nanos, d == 0L? 1L : d); // avoid 0 |
338 |
> |
q = new WaitNode(true, nanos, d == 0L ? 1L : d); // avoid 0 |
339 |
|
} |
340 |
|
else if (!queued) |
341 |
|
queued = UNSAFE.compareAndSwapObject(this, WAITERS, |
353 |
|
else if (q.thread != null && result == null) { |
354 |
|
try { |
355 |
|
ForkJoinPool.managedBlock(q); |
356 |
< |
} catch(InterruptedException ex){ |
356 |
> |
} catch (InterruptedException ex) { |
357 |
|
q.interruptControl = -1; |
358 |
|
} |
359 |
|
} |
395 |
|
/* ------------- Async tasks -------------- */ |
396 |
|
|
397 |
|
/** |
398 |
< |
* A tagging interface identifying asynchronous tasks produced by |
398 |
> |
* A marker interface identifying asynchronous tasks produced by |
399 |
|
* {@code async} methods. This may be useful for monitoring, |
400 |
|
* debugging, and tracking asynchronous activities. |
401 |
+ |
* |
402 |
+ |
* @since 1.8 |
403 |
|
*/ |
404 |
|
public static interface AsynchronousCompletionTask { |
405 |
|
} |
406 |
|
|
407 |
|
/** Base class can act as either FJ or plain Runnable */ |
408 |
< |
static abstract class Async extends ForkJoinTask<Void> |
408 |
> |
abstract static class Async extends ForkJoinTask<Void> |
409 |
|
implements Runnable, AsynchronousCompletionTask { |
410 |
|
public final Void getRawResult() { return null; } |
411 |
|
public final void setRawResult(Void v) { } |
420 |
|
} |
421 |
|
public final boolean exec() { |
422 |
|
CompletableFuture<Void> d; Throwable ex; |
423 |
< |
if ((d = this.dst) != null) { |
423 |
> |
if ((d = this.dst) != null && d.result == null) { |
424 |
|
try { |
425 |
|
fn.run(); |
426 |
|
ex = null; |
442 |
|
} |
443 |
|
public final boolean exec() { |
444 |
|
CompletableFuture<U> d; U u; Throwable ex; |
445 |
< |
if ((d = this.dst) != null) { |
445 |
> |
if ((d = this.dst) != null && d.result == null) { |
446 |
|
try { |
447 |
|
u = fn.get(); |
448 |
|
ex = null; |
458 |
|
} |
459 |
|
|
460 |
|
static final class AsyncApply<T,U> extends Async { |
444 |
– |
final Fun<? super T,? extends U> fn; |
461 |
|
final T arg; |
462 |
+ |
final Fun<? super T,? extends U> fn; |
463 |
|
final CompletableFuture<U> dst; |
464 |
|
AsyncApply(T arg, Fun<? super T,? extends U> fn, |
465 |
< |
CompletableFuture<U> dst) { |
465 |
> |
CompletableFuture<U> dst) { |
466 |
|
this.arg = arg; this.fn = fn; this.dst = dst; |
467 |
|
} |
468 |
|
public final boolean exec() { |
469 |
|
CompletableFuture<U> d; U u; Throwable ex; |
470 |
< |
if ((d = this.dst) != null) { |
470 |
> |
if ((d = this.dst) != null && d.result == null) { |
471 |
|
try { |
472 |
|
u = fn.apply(arg); |
473 |
|
ex = null; |
482 |
|
private static final long serialVersionUID = 5232453952276885070L; |
483 |
|
} |
484 |
|
|
485 |
< |
static final class AsyncBiApply<T,U,V> extends Async { |
469 |
< |
final BiFun<? super T,? super U,? extends V> fn; |
485 |
> |
static final class AsyncCombine<T,U,V> extends Async { |
486 |
|
final T arg1; |
487 |
|
final U arg2; |
488 |
+ |
final BiFun<? super T,? super U,? extends V> fn; |
489 |
|
final CompletableFuture<V> dst; |
490 |
< |
AsyncBiApply(T arg1, U arg2, |
491 |
< |
BiFun<? super T,? super U,? extends V> fn, |
492 |
< |
CompletableFuture<V> dst) { |
490 |
> |
AsyncCombine(T arg1, U arg2, |
491 |
> |
BiFun<? super T,? super U,? extends V> fn, |
492 |
> |
CompletableFuture<V> dst) { |
493 |
|
this.arg1 = arg1; this.arg2 = arg2; this.fn = fn; this.dst = dst; |
494 |
|
} |
495 |
|
public final boolean exec() { |
496 |
|
CompletableFuture<V> d; V v; Throwable ex; |
497 |
< |
if ((d = this.dst) != null) { |
497 |
> |
if ((d = this.dst) != null && d.result == null) { |
498 |
|
try { |
499 |
|
v = fn.apply(arg1, arg2); |
500 |
|
ex = null; |
510 |
|
} |
511 |
|
|
512 |
|
static final class AsyncAccept<T> extends Async { |
496 |
– |
final Action<? super T> fn; |
513 |
|
final T arg; |
514 |
+ |
final Action<? super T> fn; |
515 |
|
final CompletableFuture<Void> dst; |
516 |
|
AsyncAccept(T arg, Action<? super T> fn, |
517 |
< |
CompletableFuture<Void> dst) { |
517 |
> |
CompletableFuture<Void> dst) { |
518 |
|
this.arg = arg; this.fn = fn; this.dst = dst; |
519 |
|
} |
520 |
|
public final boolean exec() { |
521 |
|
CompletableFuture<Void> d; Throwable ex; |
522 |
< |
if ((d = this.dst) != null) { |
522 |
> |
if ((d = this.dst) != null && d.result == null) { |
523 |
|
try { |
524 |
|
fn.accept(arg); |
525 |
|
ex = null; |
533 |
|
private static final long serialVersionUID = 5232453952276885070L; |
534 |
|
} |
535 |
|
|
536 |
< |
static final class AsyncBiAccept<T,U> extends Async { |
520 |
< |
final BiAction<? super T,? super U> fn; |
536 |
> |
static final class AsyncAcceptBoth<T,U> extends Async { |
537 |
|
final T arg1; |
538 |
|
final U arg2; |
539 |
+ |
final BiAction<? super T,? super U> fn; |
540 |
|
final CompletableFuture<Void> dst; |
541 |
< |
AsyncBiAccept(T arg1, U arg2, |
542 |
< |
BiAction<? super T,? super U> fn, |
543 |
< |
CompletableFuture<Void> dst) { |
541 |
> |
AsyncAcceptBoth(T arg1, U arg2, |
542 |
> |
BiAction<? super T,? super U> fn, |
543 |
> |
CompletableFuture<Void> dst) { |
544 |
|
this.arg1 = arg1; this.arg2 = arg2; this.fn = fn; this.dst = dst; |
545 |
|
} |
546 |
|
public final boolean exec() { |
547 |
|
CompletableFuture<Void> d; Throwable ex; |
548 |
< |
if ((d = this.dst) != null) { |
548 |
> |
if ((d = this.dst) != null && d.result == null) { |
549 |
|
try { |
550 |
|
fn.accept(arg1, arg2); |
551 |
|
ex = null; |
559 |
|
private static final long serialVersionUID = 5232453952276885070L; |
560 |
|
} |
561 |
|
|
562 |
+ |
static final class AsyncCompose<T,U> extends Async { |
563 |
+ |
final T arg; |
564 |
+ |
final Fun<? super T, CompletableFuture<U>> fn; |
565 |
+ |
final CompletableFuture<U> dst; |
566 |
+ |
AsyncCompose(T arg, |
567 |
+ |
Fun<? super T, CompletableFuture<U>> fn, |
568 |
+ |
CompletableFuture<U> dst) { |
569 |
+ |
this.arg = arg; this.fn = fn; this.dst = dst; |
570 |
+ |
} |
571 |
+ |
public final boolean exec() { |
572 |
+ |
CompletableFuture<U> d, fr; U u; Throwable ex; |
573 |
+ |
if ((d = this.dst) != null && d.result == null) { |
574 |
+ |
try { |
575 |
+ |
fr = fn.apply(arg); |
576 |
+ |
ex = (fr == null) ? new NullPointerException() : null; |
577 |
+ |
} catch (Throwable rex) { |
578 |
+ |
ex = rex; |
579 |
+ |
fr = null; |
580 |
+ |
} |
581 |
+ |
if (ex != null) |
582 |
+ |
u = null; |
583 |
+ |
else { |
584 |
+ |
Object r = fr.result; |
585 |
+ |
if (r == null) |
586 |
+ |
r = fr.waitingGet(false); |
587 |
+ |
if (r instanceof AltResult) { |
588 |
+ |
ex = ((AltResult)r).ex; |
589 |
+ |
u = null; |
590 |
+ |
} |
591 |
+ |
else { |
592 |
+ |
@SuppressWarnings("unchecked") U ur = (U) r; |
593 |
+ |
u = ur; |
594 |
+ |
} |
595 |
+ |
} |
596 |
+ |
d.internalComplete(u, ex); |
597 |
+ |
} |
598 |
+ |
return true; |
599 |
+ |
} |
600 |
+ |
private static final long serialVersionUID = 5232453952276885070L; |
601 |
+ |
} |
602 |
+ |
|
603 |
|
/* ------------- Completions -------------- */ |
604 |
|
|
605 |
|
/** |
615 |
|
} |
616 |
|
|
617 |
|
// Opportunistically subclass AtomicInteger to use compareAndSet to claim. |
618 |
< |
static abstract class Completion extends AtomicInteger implements Runnable { |
618 |
> |
abstract static class Completion extends AtomicInteger implements Runnable { |
619 |
|
} |
620 |
|
|
621 |
< |
static final class ApplyCompletion<T,U> extends Completion { |
621 |
> |
static final class ThenApply<T,U> extends Completion { |
622 |
|
final CompletableFuture<? extends T> src; |
623 |
|
final Fun<? super T,? extends U> fn; |
624 |
|
final CompletableFuture<U> dst; |
625 |
|
final Executor executor; |
626 |
< |
ApplyCompletion(CompletableFuture<? extends T> src, |
627 |
< |
Fun<? super T,? extends U> fn, |
628 |
< |
CompletableFuture<U> dst, Executor executor) { |
626 |
> |
ThenApply(CompletableFuture<? extends T> src, |
627 |
> |
Fun<? super T,? extends U> fn, |
628 |
> |
CompletableFuture<U> dst, |
629 |
> |
Executor executor) { |
630 |
|
this.src = src; this.fn = fn; this.dst = dst; |
631 |
|
this.executor = executor; |
632 |
|
} |
668 |
|
private static final long serialVersionUID = 5232453952276885070L; |
669 |
|
} |
670 |
|
|
671 |
< |
static final class AcceptCompletion<T> extends Completion { |
671 |
> |
static final class ThenAccept<T> extends Completion { |
672 |
|
final CompletableFuture<? extends T> src; |
673 |
|
final Action<? super T> fn; |
674 |
|
final CompletableFuture<Void> dst; |
675 |
|
final Executor executor; |
676 |
< |
AcceptCompletion(CompletableFuture<? extends T> src, |
677 |
< |
Action<? super T> fn, |
678 |
< |
CompletableFuture<Void> dst, Executor executor) { |
676 |
> |
ThenAccept(CompletableFuture<? extends T> src, |
677 |
> |
Action<? super T> fn, |
678 |
> |
CompletableFuture<Void> dst, |
679 |
> |
Executor executor) { |
680 |
|
this.src = src; this.fn = fn; this.dst = dst; |
681 |
|
this.executor = executor; |
682 |
|
} |
717 |
|
private static final long serialVersionUID = 5232453952276885070L; |
718 |
|
} |
719 |
|
|
720 |
< |
static final class RunCompletion<T> extends Completion { |
721 |
< |
final CompletableFuture<? extends T> src; |
720 |
> |
static final class ThenRun extends Completion { |
721 |
> |
final CompletableFuture<?> src; |
722 |
|
final Runnable fn; |
723 |
|
final CompletableFuture<Void> dst; |
724 |
|
final Executor executor; |
725 |
< |
RunCompletion(CompletableFuture<? extends T> src, |
726 |
< |
Runnable fn, |
727 |
< |
CompletableFuture<Void> dst, |
728 |
< |
Executor executor) { |
725 |
> |
ThenRun(CompletableFuture<?> src, |
726 |
> |
Runnable fn, |
727 |
> |
CompletableFuture<Void> dst, |
728 |
> |
Executor executor) { |
729 |
|
this.src = src; this.fn = fn; this.dst = dst; |
730 |
|
this.executor = executor; |
731 |
|
} |
732 |
|
public final void run() { |
733 |
< |
final CompletableFuture<? extends T> a; |
733 |
> |
final CompletableFuture<?> a; |
734 |
|
final Runnable fn; |
735 |
|
final CompletableFuture<Void> dst; |
736 |
|
Object r; Throwable ex; |
761 |
|
private static final long serialVersionUID = 5232453952276885070L; |
762 |
|
} |
763 |
|
|
764 |
< |
static final class BiApplyCompletion<T,U,V> extends Completion { |
764 |
> |
static final class ThenCombine<T,U,V> extends Completion { |
765 |
|
final CompletableFuture<? extends T> src; |
766 |
|
final CompletableFuture<? extends U> snd; |
767 |
|
final BiFun<? super T,? super U,? extends V> fn; |
768 |
|
final CompletableFuture<V> dst; |
769 |
|
final Executor executor; |
770 |
< |
BiApplyCompletion(CompletableFuture<? extends T> src, |
771 |
< |
CompletableFuture<? extends U> snd, |
772 |
< |
BiFun<? super T,? super U,? extends V> fn, |
773 |
< |
CompletableFuture<V> dst, Executor executor) { |
770 |
> |
ThenCombine(CompletableFuture<? extends T> src, |
771 |
> |
CompletableFuture<? extends U> snd, |
772 |
> |
BiFun<? super T,? super U,? extends V> fn, |
773 |
> |
CompletableFuture<V> dst, |
774 |
> |
Executor executor) { |
775 |
|
this.src = src; this.snd = snd; |
776 |
|
this.fn = fn; this.dst = dst; |
777 |
|
this.executor = executor; |
813 |
|
if (ex == null) { |
814 |
|
try { |
815 |
|
if (e != null) |
816 |
< |
e.execute(new AsyncBiApply<T,U,V>(t, u, fn, dst)); |
816 |
> |
e.execute(new AsyncCombine<T,U,V>(t, u, fn, dst)); |
817 |
|
else |
818 |
|
v = fn.apply(t, u); |
819 |
|
} catch (Throwable rex) { |
827 |
|
private static final long serialVersionUID = 5232453952276885070L; |
828 |
|
} |
829 |
|
|
830 |
< |
static final class BiAcceptCompletion<T,U> extends Completion { |
830 |
> |
static final class ThenAcceptBoth<T,U> extends Completion { |
831 |
|
final CompletableFuture<? extends T> src; |
832 |
|
final CompletableFuture<? extends U> snd; |
833 |
|
final BiAction<? super T,? super U> fn; |
834 |
|
final CompletableFuture<Void> dst; |
835 |
|
final Executor executor; |
836 |
< |
BiAcceptCompletion(CompletableFuture<? extends T> src, |
837 |
< |
CompletableFuture<? extends U> snd, |
838 |
< |
BiAction<? super T,? super U> fn, |
839 |
< |
CompletableFuture<Void> dst, Executor executor) { |
836 |
> |
ThenAcceptBoth(CompletableFuture<? extends T> src, |
837 |
> |
CompletableFuture<? extends U> snd, |
838 |
> |
BiAction<? super T,? super U> fn, |
839 |
> |
CompletableFuture<Void> dst, |
840 |
> |
Executor executor) { |
841 |
|
this.src = src; this.snd = snd; |
842 |
|
this.fn = fn; this.dst = dst; |
843 |
|
this.executor = executor; |
878 |
|
if (ex == null) { |
879 |
|
try { |
880 |
|
if (e != null) |
881 |
< |
e.execute(new AsyncBiAccept<T,U>(t, u, fn, dst)); |
881 |
> |
e.execute(new AsyncAcceptBoth<T,U>(t, u, fn, dst)); |
882 |
|
else |
883 |
|
fn.accept(t, u); |
884 |
|
} catch (Throwable rex) { |
892 |
|
private static final long serialVersionUID = 5232453952276885070L; |
893 |
|
} |
894 |
|
|
895 |
< |
static final class BiRunCompletion<T> extends Completion { |
896 |
< |
final CompletableFuture<? extends T> src; |
895 |
> |
static final class RunAfterBoth extends Completion { |
896 |
> |
final CompletableFuture<?> src; |
897 |
|
final CompletableFuture<?> snd; |
898 |
|
final Runnable fn; |
899 |
|
final CompletableFuture<Void> dst; |
900 |
|
final Executor executor; |
901 |
< |
BiRunCompletion(CompletableFuture<? extends T> src, |
902 |
< |
CompletableFuture<?> snd, |
903 |
< |
Runnable fn, |
904 |
< |
CompletableFuture<Void> dst, Executor executor) { |
901 |
> |
RunAfterBoth(CompletableFuture<?> src, |
902 |
> |
CompletableFuture<?> snd, |
903 |
> |
Runnable fn, |
904 |
> |
CompletableFuture<Void> dst, |
905 |
> |
Executor executor) { |
906 |
|
this.src = src; this.snd = snd; |
907 |
|
this.fn = fn; this.dst = dst; |
908 |
|
this.executor = executor; |
909 |
|
} |
910 |
|
public final void run() { |
911 |
< |
final CompletableFuture<? extends T> a; |
911 |
> |
final CompletableFuture<?> a; |
912 |
|
final CompletableFuture<?> b; |
913 |
|
final Runnable fn; |
914 |
|
final CompletableFuture<Void> dst; |
944 |
|
private static final long serialVersionUID = 5232453952276885070L; |
945 |
|
} |
946 |
|
|
947 |
< |
static final class OrApplyCompletion<T,U> extends Completion { |
947 |
> |
static final class AndCompletion extends Completion { |
948 |
> |
final CompletableFuture<?> src; |
949 |
> |
final CompletableFuture<?> snd; |
950 |
> |
final CompletableFuture<Void> dst; |
951 |
> |
AndCompletion(CompletableFuture<?> src, |
952 |
> |
CompletableFuture<?> snd, |
953 |
> |
CompletableFuture<Void> dst) { |
954 |
> |
this.src = src; this.snd = snd; this.dst = dst; |
955 |
> |
} |
956 |
> |
public final void run() { |
957 |
> |
final CompletableFuture<?> a; |
958 |
> |
final CompletableFuture<?> b; |
959 |
> |
final CompletableFuture<Void> dst; |
960 |
> |
Object r, s; Throwable ex; |
961 |
> |
if ((dst = this.dst) != null && |
962 |
> |
(a = this.src) != null && |
963 |
> |
(r = a.result) != null && |
964 |
> |
(b = this.snd) != null && |
965 |
> |
(s = b.result) != null && |
966 |
> |
compareAndSet(0, 1)) { |
967 |
> |
if (r instanceof AltResult) |
968 |
> |
ex = ((AltResult)r).ex; |
969 |
> |
else |
970 |
> |
ex = null; |
971 |
> |
if (ex == null && (s instanceof AltResult)) |
972 |
> |
ex = ((AltResult)s).ex; |
973 |
> |
dst.internalComplete(null, ex); |
974 |
> |
} |
975 |
> |
} |
976 |
> |
private static final long serialVersionUID = 5232453952276885070L; |
977 |
> |
} |
978 |
> |
|
979 |
> |
static final class ApplyToEither<T,U> extends Completion { |
980 |
|
final CompletableFuture<? extends T> src; |
981 |
|
final CompletableFuture<? extends T> snd; |
982 |
|
final Fun<? super T,? extends U> fn; |
983 |
|
final CompletableFuture<U> dst; |
984 |
|
final Executor executor; |
985 |
< |
OrApplyCompletion(CompletableFuture<? extends T> src, |
986 |
< |
CompletableFuture<? extends T> snd, |
987 |
< |
Fun<? super T,? extends U> fn, |
988 |
< |
CompletableFuture<U> dst, Executor executor) { |
985 |
> |
ApplyToEither(CompletableFuture<? extends T> src, |
986 |
> |
CompletableFuture<? extends T> snd, |
987 |
> |
Fun<? super T,? extends U> fn, |
988 |
> |
CompletableFuture<U> dst, |
989 |
> |
Executor executor) { |
990 |
|
this.src = src; this.snd = snd; |
991 |
|
this.fn = fn; this.dst = dst; |
992 |
|
this.executor = executor; |
1030 |
|
private static final long serialVersionUID = 5232453952276885070L; |
1031 |
|
} |
1032 |
|
|
1033 |
< |
static final class OrAcceptCompletion<T> extends Completion { |
1033 |
> |
static final class AcceptEither<T> extends Completion { |
1034 |
|
final CompletableFuture<? extends T> src; |
1035 |
|
final CompletableFuture<? extends T> snd; |
1036 |
|
final Action<? super T> fn; |
1037 |
|
final CompletableFuture<Void> dst; |
1038 |
|
final Executor executor; |
1039 |
< |
OrAcceptCompletion(CompletableFuture<? extends T> src, |
1040 |
< |
CompletableFuture<? extends T> snd, |
1041 |
< |
Action<? super T> fn, |
1042 |
< |
CompletableFuture<Void> dst, Executor executor) { |
1039 |
> |
AcceptEither(CompletableFuture<? extends T> src, |
1040 |
> |
CompletableFuture<? extends T> snd, |
1041 |
> |
Action<? super T> fn, |
1042 |
> |
CompletableFuture<Void> dst, |
1043 |
> |
Executor executor) { |
1044 |
|
this.src = src; this.snd = snd; |
1045 |
|
this.fn = fn; this.dst = dst; |
1046 |
|
this.executor = executor; |
1083 |
|
private static final long serialVersionUID = 5232453952276885070L; |
1084 |
|
} |
1085 |
|
|
1086 |
< |
static final class OrRunCompletion<T> extends Completion { |
1087 |
< |
final CompletableFuture<? extends T> src; |
1086 |
> |
static final class RunAfterEither extends Completion { |
1087 |
> |
final CompletableFuture<?> src; |
1088 |
|
final CompletableFuture<?> snd; |
1089 |
|
final Runnable fn; |
1090 |
|
final CompletableFuture<Void> dst; |
1091 |
|
final Executor executor; |
1092 |
< |
OrRunCompletion(CompletableFuture<? extends T> src, |
1093 |
< |
CompletableFuture<?> snd, |
1094 |
< |
Runnable fn, |
1095 |
< |
CompletableFuture<Void> dst, Executor executor) { |
1092 |
> |
RunAfterEither(CompletableFuture<?> src, |
1093 |
> |
CompletableFuture<?> snd, |
1094 |
> |
Runnable fn, |
1095 |
> |
CompletableFuture<Void> dst, |
1096 |
> |
Executor executor) { |
1097 |
|
this.src = src; this.snd = snd; |
1098 |
|
this.fn = fn; this.dst = dst; |
1099 |
|
this.executor = executor; |
1100 |
|
} |
1101 |
|
public final void run() { |
1102 |
< |
final CompletableFuture<? extends T> a; |
1102 |
> |
final CompletableFuture<?> a; |
1103 |
|
final CompletableFuture<?> b; |
1104 |
|
final Runnable fn; |
1105 |
|
final CompletableFuture<Void> dst; |
1131 |
|
private static final long serialVersionUID = 5232453952276885070L; |
1132 |
|
} |
1133 |
|
|
1134 |
+ |
static final class OrCompletion extends Completion { |
1135 |
+ |
final CompletableFuture<?> src; |
1136 |
+ |
final CompletableFuture<?> snd; |
1137 |
+ |
final CompletableFuture<Object> dst; |
1138 |
+ |
OrCompletion(CompletableFuture<?> src, |
1139 |
+ |
CompletableFuture<?> snd, |
1140 |
+ |
CompletableFuture<Object> dst) { |
1141 |
+ |
this.src = src; this.snd = snd; this.dst = dst; |
1142 |
+ |
} |
1143 |
+ |
public final void run() { |
1144 |
+ |
final CompletableFuture<?> a; |
1145 |
+ |
final CompletableFuture<?> b; |
1146 |
+ |
final CompletableFuture<Object> dst; |
1147 |
+ |
Object r, t; Throwable ex; |
1148 |
+ |
if ((dst = this.dst) != null && |
1149 |
+ |
(((a = this.src) != null && (r = a.result) != null) || |
1150 |
+ |
((b = this.snd) != null && (r = b.result) != null)) && |
1151 |
+ |
compareAndSet(0, 1)) { |
1152 |
+ |
if (r instanceof AltResult) { |
1153 |
+ |
ex = ((AltResult)r).ex; |
1154 |
+ |
t = null; |
1155 |
+ |
} |
1156 |
+ |
else { |
1157 |
+ |
ex = null; |
1158 |
+ |
t = r; |
1159 |
+ |
} |
1160 |
+ |
dst.internalComplete(t, ex); |
1161 |
+ |
} |
1162 |
+ |
} |
1163 |
+ |
private static final long serialVersionUID = 5232453952276885070L; |
1164 |
+ |
} |
1165 |
+ |
|
1166 |
|
static final class ExceptionCompletion<T> extends Completion { |
1167 |
|
final CompletableFuture<? extends T> src; |
1168 |
|
final Fun<? super Throwable, ? extends T> fn; |
1183 |
|
(r = a.result) != null && |
1184 |
|
compareAndSet(0, 1)) { |
1185 |
|
if ((r instanceof AltResult) && |
1186 |
< |
(ex = ((AltResult)r).ex) != null) { |
1186 |
> |
(ex = ((AltResult)r).ex) != null) { |
1187 |
|
try { |
1188 |
|
t = fn.apply(ex); |
1189 |
|
} catch (Throwable rex) { |
1201 |
|
} |
1202 |
|
|
1203 |
|
static final class ThenCopy<T> extends Completion { |
1204 |
< |
final CompletableFuture<? extends T> src; |
1204 |
> |
final CompletableFuture<?> src; |
1205 |
|
final CompletableFuture<T> dst; |
1206 |
< |
ThenCopy(CompletableFuture<? extends T> src, |
1206 |
> |
ThenCopy(CompletableFuture<?> src, |
1207 |
|
CompletableFuture<T> dst) { |
1208 |
|
this.src = src; this.dst = dst; |
1209 |
|
} |
1210 |
|
public final void run() { |
1211 |
< |
final CompletableFuture<? extends T> a; |
1211 |
> |
final CompletableFuture<?> a; |
1212 |
|
final CompletableFuture<T> dst; |
1213 |
< |
Object r; Object t; Throwable ex; |
1213 |
> |
Object r; T t; Throwable ex; |
1214 |
|
if ((dst = this.dst) != null && |
1215 |
|
(a = this.src) != null && |
1216 |
|
(r = a.result) != null && |
1221 |
|
} |
1222 |
|
else { |
1223 |
|
ex = null; |
1224 |
< |
t = r; |
1224 |
> |
@SuppressWarnings("unchecked") T tr = (T) r; |
1225 |
> |
t = tr; |
1226 |
|
} |
1227 |
|
dst.internalComplete(t, ex); |
1228 |
|
} |
1230 |
|
private static final long serialVersionUID = 5232453952276885070L; |
1231 |
|
} |
1232 |
|
|
1233 |
+ |
// version of ThenCopy for CompletableFuture<Void> dst |
1234 |
+ |
static final class ThenPropagate extends Completion { |
1235 |
+ |
final CompletableFuture<?> src; |
1236 |
+ |
final CompletableFuture<Void> dst; |
1237 |
+ |
ThenPropagate(CompletableFuture<?> src, |
1238 |
+ |
CompletableFuture<Void> dst) { |
1239 |
+ |
this.src = src; this.dst = dst; |
1240 |
+ |
} |
1241 |
+ |
public final void run() { |
1242 |
+ |
final CompletableFuture<?> a; |
1243 |
+ |
final CompletableFuture<Void> dst; |
1244 |
+ |
Object r; Throwable ex; |
1245 |
+ |
if ((dst = this.dst) != null && |
1246 |
+ |
(a = this.src) != null && |
1247 |
+ |
(r = a.result) != null && |
1248 |
+ |
compareAndSet(0, 1)) { |
1249 |
+ |
if (r instanceof AltResult) |
1250 |
+ |
ex = ((AltResult)r).ex; |
1251 |
+ |
else |
1252 |
+ |
ex = null; |
1253 |
+ |
dst.internalComplete(null, ex); |
1254 |
+ |
} |
1255 |
+ |
} |
1256 |
+ |
private static final long serialVersionUID = 5232453952276885070L; |
1257 |
+ |
} |
1258 |
+ |
|
1259 |
|
static final class HandleCompletion<T,U> extends Completion { |
1260 |
|
final CompletableFuture<? extends T> src; |
1261 |
|
final BiFun<? super T, Throwable, ? extends U> fn; |
1262 |
|
final CompletableFuture<U> dst; |
1263 |
|
HandleCompletion(CompletableFuture<? extends T> src, |
1264 |
|
BiFun<? super T, Throwable, ? extends U> fn, |
1265 |
< |
final CompletableFuture<U> dst) { |
1265 |
> |
CompletableFuture<U> dst) { |
1266 |
|
this.src = src; this.fn = fn; this.dst = dst; |
1267 |
|
} |
1268 |
|
public final void run() { |
1296 |
|
private static final long serialVersionUID = 5232453952276885070L; |
1297 |
|
} |
1298 |
|
|
1299 |
< |
static final class ComposeCompletion<T,U> extends Completion { |
1299 |
> |
static final class ThenCompose<T,U> extends Completion { |
1300 |
|
final CompletableFuture<? extends T> src; |
1301 |
|
final Fun<? super T, CompletableFuture<U>> fn; |
1302 |
|
final CompletableFuture<U> dst; |
1303 |
< |
ComposeCompletion(CompletableFuture<? extends T> src, |
1304 |
< |
Fun<? super T, CompletableFuture<U>> fn, |
1305 |
< |
final CompletableFuture<U> dst) { |
1303 |
> |
final Executor executor; |
1304 |
> |
ThenCompose(CompletableFuture<? extends T> src, |
1305 |
> |
Fun<? super T, CompletableFuture<U>> fn, |
1306 |
> |
CompletableFuture<U> dst, |
1307 |
> |
Executor executor) { |
1308 |
|
this.src = src; this.fn = fn; this.dst = dst; |
1309 |
+ |
this.executor = executor; |
1310 |
|
} |
1311 |
|
public final void run() { |
1312 |
|
final CompletableFuture<? extends T> a; |
1313 |
|
final Fun<? super T, CompletableFuture<U>> fn; |
1314 |
|
final CompletableFuture<U> dst; |
1315 |
< |
Object r; T t; Throwable ex; |
1315 |
> |
Object r; T t; Throwable ex; Executor e; |
1316 |
|
if ((dst = this.dst) != null && |
1317 |
|
(fn = this.fn) != null && |
1318 |
|
(a = this.src) != null && |
1331 |
|
U u = null; |
1332 |
|
boolean complete = false; |
1333 |
|
if (ex == null) { |
1334 |
< |
try { |
1335 |
< |
c = fn.apply(t); |
1336 |
< |
} catch (Throwable rex) { |
1337 |
< |
ex = rex; |
1334 |
> |
if ((e = executor) != null) |
1335 |
> |
e.execute(new AsyncCompose<T,U>(t, fn, dst)); |
1336 |
> |
else { |
1337 |
> |
try { |
1338 |
> |
if ((c = fn.apply(t)) == null) |
1339 |
> |
ex = new NullPointerException(); |
1340 |
> |
} catch (Throwable rex) { |
1341 |
> |
ex = rex; |
1342 |
> |
} |
1343 |
|
} |
1344 |
|
} |
1345 |
< |
if (ex != null || c == null) { |
1181 |
< |
if (ex == null) |
1182 |
< |
ex = new NullPointerException(); |
1183 |
< |
} |
1184 |
< |
else { |
1345 |
> |
if (c != null) { |
1346 |
|
ThenCopy<U> d = null; |
1347 |
|
Object s; |
1348 |
|
if ((s = c.result) == null) { |
1384 |
|
} |
1385 |
|
|
1386 |
|
/** |
1387 |
< |
* Asynchronously executes in the {@link |
1388 |
< |
* ForkJoinPool#commonPool()}, a task that completes the returned |
1389 |
< |
* CompletableFuture with the result of the given Supplier. |
1387 |
> |
* Returns a new CompletableFuture that is asynchronously completed |
1388 |
> |
* by a task running in the {@link ForkJoinPool#commonPool()} with |
1389 |
> |
* the value obtained by calling the given Generator. |
1390 |
|
* |
1391 |
|
* @param supplier a function returning the value to be used |
1392 |
|
* to complete the returned CompletableFuture |
1393 |
< |
* @return the CompletableFuture |
1393 |
> |
* @param <U> the function's return type |
1394 |
> |
* @return the new CompletableFuture |
1395 |
|
*/ |
1396 |
|
public static <U> CompletableFuture<U> supplyAsync(Generator<U> supplier) { |
1397 |
|
if (supplier == null) throw new NullPointerException(); |
1402 |
|
} |
1403 |
|
|
1404 |
|
/** |
1405 |
< |
* Asynchronously executes using the given executor, a task that |
1406 |
< |
* completes the returned CompletableFuture with the result of the |
1407 |
< |
* given Supplier. |
1405 |
> |
* Returns a new CompletableFuture that is asynchronously completed |
1406 |
> |
* by a task running in the given executor with the value obtained |
1407 |
> |
* by calling the given Generator. |
1408 |
|
* |
1409 |
|
* @param supplier a function returning the value to be used |
1410 |
|
* to complete the returned CompletableFuture |
1411 |
|
* @param executor the executor to use for asynchronous execution |
1412 |
< |
* @return the CompletableFuture |
1412 |
> |
* @param <U> the function's return type |
1413 |
> |
* @return the new CompletableFuture |
1414 |
|
*/ |
1415 |
|
public static <U> CompletableFuture<U> supplyAsync(Generator<U> supplier, |
1416 |
|
Executor executor) { |
1422 |
|
} |
1423 |
|
|
1424 |
|
/** |
1425 |
< |
* Asynchronously executes in the {@link |
1426 |
< |
* ForkJoinPool#commonPool()} a task that runs the given action, |
1427 |
< |
* and then completes the returned CompletableFuture. |
1425 |
> |
* Returns a new CompletableFuture that is asynchronously completed |
1426 |
> |
* by a task running in the {@link ForkJoinPool#commonPool()} after |
1427 |
> |
* it runs the given action. |
1428 |
|
* |
1429 |
|
* @param runnable the action to run before completing the |
1430 |
|
* returned CompletableFuture |
1431 |
< |
* @return the CompletableFuture |
1431 |
> |
* @return the new CompletableFuture |
1432 |
|
*/ |
1433 |
|
public static CompletableFuture<Void> runAsync(Runnable runnable) { |
1434 |
|
if (runnable == null) throw new NullPointerException(); |
1439 |
|
} |
1440 |
|
|
1441 |
|
/** |
1442 |
< |
* Asynchronously executes using the given executor, a task that |
1443 |
< |
* runs the given action, and then completes the returned |
1444 |
< |
* CompletableFuture. |
1442 |
> |
* Returns a new CompletableFuture that is asynchronously completed |
1443 |
> |
* by a task running in the given executor after it runs the given |
1444 |
> |
* action. |
1445 |
|
* |
1446 |
|
* @param runnable the action to run before completing the |
1447 |
|
* returned CompletableFuture |
1448 |
|
* @param executor the executor to use for asynchronous execution |
1449 |
< |
* @return the CompletableFuture |
1449 |
> |
* @return the new CompletableFuture |
1450 |
|
*/ |
1451 |
|
public static CompletableFuture<Void> runAsync(Runnable runnable, |
1452 |
|
Executor executor) { |
1458 |
|
} |
1459 |
|
|
1460 |
|
/** |
1461 |
+ |
* Returns a new CompletableFuture that is already completed with |
1462 |
+ |
* the given value. |
1463 |
+ |
* |
1464 |
+ |
* @param value the value |
1465 |
+ |
* @param <U> the type of the value |
1466 |
+ |
* @return the completed CompletableFuture |
1467 |
+ |
*/ |
1468 |
+ |
public static <U> CompletableFuture<U> completedFuture(U value) { |
1469 |
+ |
CompletableFuture<U> f = new CompletableFuture<U>(); |
1470 |
+ |
f.result = (value == null) ? NIL : value; |
1471 |
+ |
return f; |
1472 |
+ |
} |
1473 |
+ |
|
1474 |
+ |
/** |
1475 |
|
* Returns {@code true} if completed in any fashion: normally, |
1476 |
|
* exceptionally, or via cancellation. |
1477 |
|
* |
1482 |
|
} |
1483 |
|
|
1484 |
|
/** |
1485 |
< |
* Waits if necessary for the computation to complete, and then |
1486 |
< |
* retrieves its result. |
1485 |
> |
* Waits if necessary for this future to complete, and then |
1486 |
> |
* returns its result. |
1487 |
|
* |
1488 |
< |
* @return the computed result |
1489 |
< |
* @throws CancellationException if the computation was cancelled |
1490 |
< |
* @throws ExecutionException if the computation threw an |
1314 |
< |
* exception |
1488 |
> |
* @return the result value |
1489 |
> |
* @throws CancellationException if this future was cancelled |
1490 |
> |
* @throws ExecutionException if this future completed exceptionally |
1491 |
|
* @throws InterruptedException if the current thread was interrupted |
1492 |
|
* while waiting |
1493 |
|
*/ |
1495 |
|
Object r; Throwable ex, cause; |
1496 |
|
if ((r = result) == null && (r = waitingGet(true)) == null) |
1497 |
|
throw new InterruptedException(); |
1498 |
< |
if (r instanceof AltResult) { |
1499 |
< |
if ((ex = ((AltResult)r).ex) != null) { |
1500 |
< |
if (ex instanceof CancellationException) |
1325 |
< |
throw (CancellationException)ex; |
1326 |
< |
if ((ex instanceof CompletionException) && |
1327 |
< |
(cause = ex.getCause()) != null) |
1328 |
< |
ex = cause; |
1329 |
< |
throw new ExecutionException(ex); |
1330 |
< |
} |
1331 |
< |
return null; |
1498 |
> |
if (!(r instanceof AltResult)) { |
1499 |
> |
@SuppressWarnings("unchecked") T tr = (T) r; |
1500 |
> |
return tr; |
1501 |
|
} |
1502 |
< |
@SuppressWarnings("unchecked") T tr = (T) r; |
1503 |
< |
return tr; |
1502 |
> |
if ((ex = ((AltResult)r).ex) == null) |
1503 |
> |
return null; |
1504 |
> |
if (ex instanceof CancellationException) |
1505 |
> |
throw (CancellationException)ex; |
1506 |
> |
if ((ex instanceof CompletionException) && |
1507 |
> |
(cause = ex.getCause()) != null) |
1508 |
> |
ex = cause; |
1509 |
> |
throw new ExecutionException(ex); |
1510 |
|
} |
1511 |
|
|
1512 |
|
/** |
1513 |
< |
* Waits if necessary for at most the given time for completion, |
1514 |
< |
* and then retrieves its result, if available. |
1513 |
> |
* Waits if necessary for at most the given time for this future |
1514 |
> |
* to complete, and then returns its result, if available. |
1515 |
|
* |
1516 |
|
* @param timeout the maximum time to wait |
1517 |
|
* @param unit the time unit of the timeout argument |
1518 |
< |
* @return the computed result |
1519 |
< |
* @throws CancellationException if the computation was cancelled |
1520 |
< |
* @throws ExecutionException if the computation threw an |
1346 |
< |
* exception |
1518 |
> |
* @return the result value |
1519 |
> |
* @throws CancellationException if this future was cancelled |
1520 |
> |
* @throws ExecutionException if this future completed exceptionally |
1521 |
|
* @throws InterruptedException if the current thread was interrupted |
1522 |
|
* while waiting |
1523 |
|
* @throws TimeoutException if the wait timed out |
1530 |
|
throw new InterruptedException(); |
1531 |
|
if ((r = result) == null) |
1532 |
|
r = timedAwaitDone(nanos); |
1533 |
< |
if (r instanceof AltResult) { |
1534 |
< |
if ((ex = ((AltResult)r).ex) != null) { |
1535 |
< |
if (ex instanceof CancellationException) |
1362 |
< |
throw (CancellationException)ex; |
1363 |
< |
if ((ex instanceof CompletionException) && |
1364 |
< |
(cause = ex.getCause()) != null) |
1365 |
< |
ex = cause; |
1366 |
< |
throw new ExecutionException(ex); |
1367 |
< |
} |
1368 |
< |
return null; |
1533 |
> |
if (!(r instanceof AltResult)) { |
1534 |
> |
@SuppressWarnings("unchecked") T tr = (T) r; |
1535 |
> |
return tr; |
1536 |
|
} |
1537 |
< |
@SuppressWarnings("unchecked") T tr = (T) r; |
1538 |
< |
return tr; |
1537 |
> |
if ((ex = ((AltResult)r).ex) == null) |
1538 |
> |
return null; |
1539 |
> |
if (ex instanceof CancellationException) |
1540 |
> |
throw (CancellationException)ex; |
1541 |
> |
if ((ex instanceof CompletionException) && |
1542 |
> |
(cause = ex.getCause()) != null) |
1543 |
> |
ex = cause; |
1544 |
> |
throw new ExecutionException(ex); |
1545 |
|
} |
1546 |
|
|
1547 |
|
/** |
1555 |
|
* |
1556 |
|
* @return the result value |
1557 |
|
* @throws CancellationException if the computation was cancelled |
1558 |
< |
* @throws CompletionException if a completion computation threw |
1559 |
< |
* an exception |
1558 |
> |
* @throws CompletionException if this future completed |
1559 |
> |
* exceptionally or a completion computation threw an exception |
1560 |
|
*/ |
1561 |
|
public T join() { |
1562 |
|
Object r; Throwable ex; |
1563 |
|
if ((r = result) == null) |
1564 |
|
r = waitingGet(false); |
1565 |
< |
if (r instanceof AltResult) { |
1566 |
< |
if ((ex = ((AltResult)r).ex) != null) { |
1567 |
< |
if (ex instanceof CancellationException) |
1395 |
< |
throw (CancellationException)ex; |
1396 |
< |
if (ex instanceof CompletionException) |
1397 |
< |
throw (CompletionException)ex; |
1398 |
< |
throw new CompletionException(ex); |
1399 |
< |
} |
1400 |
< |
return null; |
1565 |
> |
if (!(r instanceof AltResult)) { |
1566 |
> |
@SuppressWarnings("unchecked") T tr = (T) r; |
1567 |
> |
return tr; |
1568 |
|
} |
1569 |
< |
@SuppressWarnings("unchecked") T tr = (T) r; |
1570 |
< |
return tr; |
1569 |
> |
if ((ex = ((AltResult)r).ex) == null) |
1570 |
> |
return null; |
1571 |
> |
if (ex instanceof CancellationException) |
1572 |
> |
throw (CancellationException)ex; |
1573 |
> |
if (ex instanceof CompletionException) |
1574 |
> |
throw (CompletionException)ex; |
1575 |
> |
throw new CompletionException(ex); |
1576 |
|
} |
1577 |
|
|
1578 |
|
/** |
1582 |
|
* @param valueIfAbsent the value to return if not completed |
1583 |
|
* @return the result value, if completed, else the given valueIfAbsent |
1584 |
|
* @throws CancellationException if the computation was cancelled |
1585 |
< |
* @throws CompletionException if a completion computation threw |
1586 |
< |
* an exception |
1585 |
> |
* @throws CompletionException if this future completed |
1586 |
> |
* exceptionally or a completion computation threw an exception |
1587 |
|
*/ |
1588 |
|
public T getNow(T valueIfAbsent) { |
1589 |
|
Object r; Throwable ex; |
1590 |
|
if ((r = result) == null) |
1591 |
|
return valueIfAbsent; |
1592 |
< |
if (r instanceof AltResult) { |
1593 |
< |
if ((ex = ((AltResult)r).ex) != null) { |
1594 |
< |
if (ex instanceof CancellationException) |
1423 |
< |
throw (CancellationException)ex; |
1424 |
< |
if (ex instanceof CompletionException) |
1425 |
< |
throw (CompletionException)ex; |
1426 |
< |
throw new CompletionException(ex); |
1427 |
< |
} |
1428 |
< |
return null; |
1592 |
> |
if (!(r instanceof AltResult)) { |
1593 |
> |
@SuppressWarnings("unchecked") T tr = (T) r; |
1594 |
> |
return tr; |
1595 |
|
} |
1596 |
< |
@SuppressWarnings("unchecked") T tr = (T) r; |
1597 |
< |
return tr; |
1596 |
> |
if ((ex = ((AltResult)r).ex) == null) |
1597 |
> |
return null; |
1598 |
> |
if (ex instanceof CancellationException) |
1599 |
> |
throw (CancellationException)ex; |
1600 |
> |
if (ex instanceof CompletionException) |
1601 |
> |
throw (CompletionException)ex; |
1602 |
> |
throw new CompletionException(ex); |
1603 |
|
} |
1604 |
|
|
1605 |
|
/** |
1635 |
|
} |
1636 |
|
|
1637 |
|
/** |
1638 |
< |
* Creates and returns a CompletableFuture that is completed with |
1639 |
< |
* the result of the given function of this CompletableFuture. |
1640 |
< |
* If this CompletableFuture completes exceptionally, |
1641 |
< |
* then the returned CompletableFuture also does so, |
1642 |
< |
* with a CompletionException holding this exception as |
1643 |
< |
* its cause. |
1638 |
> |
* Returns a new CompletableFuture that is completed |
1639 |
> |
* when this CompletableFuture completes, with the result of the |
1640 |
> |
* given function of this CompletableFuture's result. |
1641 |
> |
* |
1642 |
> |
* <p>If this CompletableFuture completes exceptionally, or the |
1643 |
> |
* supplied function throws an exception, then the returned |
1644 |
> |
* CompletableFuture completes exceptionally with a |
1645 |
> |
* CompletionException holding the exception as its cause. |
1646 |
|
* |
1647 |
|
* @param fn the function to use to compute the value of |
1648 |
|
* the returned CompletableFuture |
1653 |
|
} |
1654 |
|
|
1655 |
|
/** |
1656 |
< |
* Creates and returns a CompletableFuture that is asynchronously |
1657 |
< |
* completed using the {@link ForkJoinPool#commonPool()} with the |
1658 |
< |
* result of the given function of this CompletableFuture. If |
1659 |
< |
* this CompletableFuture completes exceptionally, then the |
1660 |
< |
* returned CompletableFuture also does so, with a |
1661 |
< |
* CompletionException holding this exception as its cause. |
1656 |
> |
* Returns a new CompletableFuture that is asynchronously completed |
1657 |
> |
* when this CompletableFuture completes, with the result of the |
1658 |
> |
* given function of this CompletableFuture's result from a |
1659 |
> |
* task running in the {@link ForkJoinPool#commonPool()}. |
1660 |
> |
* |
1661 |
> |
* <p>If this CompletableFuture completes exceptionally, or the |
1662 |
> |
* supplied function throws an exception, then the returned |
1663 |
> |
* CompletableFuture completes exceptionally with a |
1664 |
> |
* CompletionException holding the exception as its cause. |
1665 |
|
* |
1666 |
|
* @param fn the function to use to compute the value of |
1667 |
|
* the returned CompletableFuture |
1668 |
|
* @return the new CompletableFuture |
1669 |
|
*/ |
1670 |
< |
public <U> CompletableFuture<U> thenApplyAsync(Fun<? super T,? extends U> fn) { |
1670 |
> |
public <U> CompletableFuture<U> thenApplyAsync |
1671 |
> |
(Fun<? super T,? extends U> fn) { |
1672 |
|
return doThenApply(fn, ForkJoinPool.commonPool()); |
1673 |
|
} |
1674 |
|
|
1675 |
|
/** |
1676 |
< |
* Creates and returns a CompletableFuture that is asynchronously |
1677 |
< |
* completed using the given executor with the result of the given |
1678 |
< |
* function of this CompletableFuture. If this CompletableFuture |
1679 |
< |
* completes exceptionally, then the returned CompletableFuture |
1680 |
< |
* also does so, with a CompletionException holding this exception as |
1681 |
< |
* its cause. |
1676 |
> |
* Returns a new CompletableFuture that is asynchronously completed |
1677 |
> |
* when this CompletableFuture completes, with the result of the |
1678 |
> |
* given function of this CompletableFuture's result from a |
1679 |
> |
* task running in the given executor. |
1680 |
> |
* |
1681 |
> |
* <p>If this CompletableFuture completes exceptionally, or the |
1682 |
> |
* supplied function throws an exception, then the returned |
1683 |
> |
* CompletableFuture completes exceptionally with a |
1684 |
> |
* CompletionException holding the exception as its cause. |
1685 |
|
* |
1686 |
|
* @param fn the function to use to compute the value of |
1687 |
|
* the returned CompletableFuture |
1688 |
|
* @param executor the executor to use for asynchronous execution |
1689 |
|
* @return the new CompletableFuture |
1690 |
|
*/ |
1691 |
< |
public <U> CompletableFuture<U> thenApplyAsync(Fun<? super T,? extends U> fn, |
1692 |
< |
Executor executor) { |
1691 |
> |
public <U> CompletableFuture<U> thenApplyAsync |
1692 |
> |
(Fun<? super T,? extends U> fn, |
1693 |
> |
Executor executor) { |
1694 |
|
if (executor == null) throw new NullPointerException(); |
1695 |
|
return doThenApply(fn, executor); |
1696 |
|
} |
1697 |
|
|
1698 |
< |
private <U> CompletableFuture<U> doThenApply(Fun<? super T,? extends U> fn, |
1699 |
< |
Executor e) { |
1698 |
> |
private <U> CompletableFuture<U> doThenApply |
1699 |
> |
(Fun<? super T,? extends U> fn, |
1700 |
> |
Executor e) { |
1701 |
|
if (fn == null) throw new NullPointerException(); |
1702 |
|
CompletableFuture<U> dst = new CompletableFuture<U>(); |
1703 |
< |
ApplyCompletion<T,U> d = null; |
1703 |
> |
ThenApply<T,U> d = null; |
1704 |
|
Object r; |
1705 |
|
if ((r = result) == null) { |
1706 |
|
CompletionNode p = new CompletionNode |
1707 |
< |
(d = new ApplyCompletion<T,U>(this, fn, dst, e)); |
1707 |
> |
(d = new ThenApply<T,U>(this, fn, dst, e)); |
1708 |
|
while ((r = result) == null) { |
1709 |
|
if (UNSAFE.compareAndSwapObject |
1710 |
|
(this, COMPLETIONS, p.next = completions, p)) |
1741 |
|
} |
1742 |
|
|
1743 |
|
/** |
1744 |
< |
* Creates and returns a CompletableFuture that is completed after |
1745 |
< |
* performing the given action with this CompletableFuture's |
1746 |
< |
* result when it completes. If this CompletableFuture |
1747 |
< |
* completes exceptionally, then the returned CompletableFuture |
1748 |
< |
* also does so, with a CompletionException holding this exception as |
1749 |
< |
* its cause. |
1744 |
> |
* Returns a new CompletableFuture that is completed |
1745 |
> |
* when this CompletableFuture completes, after performing the given |
1746 |
> |
* action with this CompletableFuture's result. |
1747 |
> |
* |
1748 |
> |
* <p>If this CompletableFuture completes exceptionally, or the |
1749 |
> |
* supplied action throws an exception, then the returned |
1750 |
> |
* CompletableFuture completes exceptionally with a |
1751 |
> |
* CompletionException holding the exception as its cause. |
1752 |
|
* |
1753 |
|
* @param block the action to perform before completing the |
1754 |
|
* returned CompletableFuture |
1759 |
|
} |
1760 |
|
|
1761 |
|
/** |
1762 |
< |
* Creates and returns a CompletableFuture that is asynchronously |
1763 |
< |
* completed using the {@link ForkJoinPool#commonPool()} with this |
1764 |
< |
* CompletableFuture's result when it completes. If this |
1765 |
< |
* CompletableFuture completes exceptionally, then the returned |
1766 |
< |
* CompletableFuture also does so, with a CompletionException holding |
1767 |
< |
* this exception as its cause. |
1762 |
> |
* Returns a new CompletableFuture that is asynchronously completed |
1763 |
> |
* when this CompletableFuture completes, after performing the given |
1764 |
> |
* action with this CompletableFuture's result from a task running |
1765 |
> |
* in the {@link ForkJoinPool#commonPool()}. |
1766 |
> |
* |
1767 |
> |
* <p>If this CompletableFuture completes exceptionally, or the |
1768 |
> |
* supplied action throws an exception, then the returned |
1769 |
> |
* CompletableFuture completes exceptionally with a |
1770 |
> |
* CompletionException holding the exception as its cause. |
1771 |
|
* |
1772 |
|
* @param block the action to perform before completing the |
1773 |
|
* returned CompletableFuture |
1778 |
|
} |
1779 |
|
|
1780 |
|
/** |
1781 |
< |
* Creates and returns a CompletableFuture that is asynchronously |
1782 |
< |
* completed using the given executor with this |
1783 |
< |
* CompletableFuture's result when it completes. If this |
1784 |
< |
* CompletableFuture completes exceptionally, then the returned |
1785 |
< |
* CompletableFuture also does so, with a CompletionException holding |
1786 |
< |
* this exception as its cause. |
1781 |
> |
* Returns a new CompletableFuture that is asynchronously completed |
1782 |
> |
* when this CompletableFuture completes, after performing the given |
1783 |
> |
* action with this CompletableFuture's result from a task running |
1784 |
> |
* in the given executor. |
1785 |
> |
* |
1786 |
> |
* <p>If this CompletableFuture completes exceptionally, or the |
1787 |
> |
* supplied action throws an exception, then the returned |
1788 |
> |
* CompletableFuture completes exceptionally with a |
1789 |
> |
* CompletionException holding the exception as its cause. |
1790 |
|
* |
1791 |
|
* @param block the action to perform before completing the |
1792 |
|
* returned CompletableFuture |
1803 |
|
Executor e) { |
1804 |
|
if (fn == null) throw new NullPointerException(); |
1805 |
|
CompletableFuture<Void> dst = new CompletableFuture<Void>(); |
1806 |
< |
AcceptCompletion<T> d = null; |
1806 |
> |
ThenAccept<T> d = null; |
1807 |
|
Object r; |
1808 |
|
if ((r = result) == null) { |
1809 |
|
CompletionNode p = new CompletionNode |
1810 |
< |
(d = new AcceptCompletion<T>(this, fn, dst, e)); |
1810 |
> |
(d = new ThenAccept<T>(this, fn, dst, e)); |
1811 |
|
while ((r = result) == null) { |
1812 |
|
if (UNSAFE.compareAndSwapObject |
1813 |
|
(this, COMPLETIONS, p.next = completions, p)) |
1843 |
|
} |
1844 |
|
|
1845 |
|
/** |
1846 |
< |
* Creates and returns a CompletableFuture that is completed after |
1847 |
< |
* performing the given action when this CompletableFuture |
1848 |
< |
* completes. If this CompletableFuture completes exceptionally, |
1849 |
< |
* then the returned CompletableFuture also does so, with a |
1850 |
< |
* CompletionException holding this exception as its cause. |
1846 |
> |
* Returns a new CompletableFuture that is completed |
1847 |
> |
* when this CompletableFuture completes, after performing the given |
1848 |
> |
* action. |
1849 |
> |
* |
1850 |
> |
* <p>If this CompletableFuture completes exceptionally, or the |
1851 |
> |
* supplied action throws an exception, then the returned |
1852 |
> |
* CompletableFuture completes exceptionally with a |
1853 |
> |
* CompletionException holding the exception as its cause. |
1854 |
|
* |
1855 |
|
* @param action the action to perform before completing the |
1856 |
|
* returned CompletableFuture |
1861 |
|
} |
1862 |
|
|
1863 |
|
/** |
1864 |
< |
* Creates and returns a CompletableFuture that is asynchronously |
1865 |
< |
* completed using the {@link ForkJoinPool#commonPool()} after |
1866 |
< |
* performing the given action when this CompletableFuture |
1867 |
< |
* completes. If this CompletableFuture completes exceptionally, |
1868 |
< |
* then the returned CompletableFuture also does so, with a |
1869 |
< |
* CompletionException holding this exception as its cause. |
1864 |
> |
* Returns a new CompletableFuture that is asynchronously completed |
1865 |
> |
* when this CompletableFuture completes, after performing the given |
1866 |
> |
* action from a task running in the {@link ForkJoinPool#commonPool()}. |
1867 |
> |
* |
1868 |
> |
* <p>If this CompletableFuture completes exceptionally, or the |
1869 |
> |
* supplied action throws an exception, then the returned |
1870 |
> |
* CompletableFuture completes exceptionally with a |
1871 |
> |
* CompletionException holding the exception as its cause. |
1872 |
|
* |
1873 |
|
* @param action the action to perform before completing the |
1874 |
|
* returned CompletableFuture |
1879 |
|
} |
1880 |
|
|
1881 |
|
/** |
1882 |
< |
* Creates and returns a CompletableFuture that is asynchronously |
1883 |
< |
* completed using the given executor after performing the given |
1884 |
< |
* action when this CompletableFuture completes. If this |
1885 |
< |
* CompletableFuture completes exceptionally, then the returned |
1886 |
< |
* CompletableFuture also does so, with a CompletionException holding |
1887 |
< |
* this exception as its cause. |
1882 |
> |
* Returns a new CompletableFuture that is asynchronously completed |
1883 |
> |
* when this CompletableFuture completes, after performing the given |
1884 |
> |
* action from a task running in the given executor. |
1885 |
> |
* |
1886 |
> |
* <p>If this CompletableFuture completes exceptionally, or the |
1887 |
> |
* supplied action throws an exception, then the returned |
1888 |
> |
* CompletableFuture completes exceptionally with a |
1889 |
> |
* CompletionException holding the exception as its cause. |
1890 |
|
* |
1891 |
|
* @param action the action to perform before completing the |
1892 |
|
* returned CompletableFuture |
1903 |
|
Executor e) { |
1904 |
|
if (action == null) throw new NullPointerException(); |
1905 |
|
CompletableFuture<Void> dst = new CompletableFuture<Void>(); |
1906 |
< |
RunCompletion<T> d = null; |
1906 |
> |
ThenRun d = null; |
1907 |
|
Object r; |
1908 |
|
if ((r = result) == null) { |
1909 |
|
CompletionNode p = new CompletionNode |
1910 |
< |
(d = new RunCompletion<T>(this, action, dst, e)); |
1910 |
> |
(d = new ThenRun(this, action, dst, e)); |
1911 |
|
while ((r = result) == null) { |
1912 |
|
if (UNSAFE.compareAndSwapObject |
1913 |
|
(this, COMPLETIONS, p.next = completions, p)) |
1938 |
|
} |
1939 |
|
|
1940 |
|
/** |
1941 |
< |
* Creates and returns a CompletableFuture that is completed with |
1942 |
< |
* the result of the given function of this and the other given |
1943 |
< |
* CompletableFuture's results when both complete. If this or |
1944 |
< |
* the other CompletableFuture complete exceptionally, then the |
1945 |
< |
* returned CompletableFuture also does so, with a |
1946 |
< |
* CompletionException holding the exception as its cause. |
1941 |
> |
* Returns a new CompletableFuture that is completed |
1942 |
> |
* when both this and the other given CompletableFuture complete, |
1943 |
> |
* with the result of the given function of the results of the two |
1944 |
> |
* CompletableFutures. |
1945 |
> |
* |
1946 |
> |
* <p>If this and/or the other CompletableFuture complete |
1947 |
> |
* exceptionally, or the supplied function throws an exception, |
1948 |
> |
* then the returned CompletableFuture completes exceptionally |
1949 |
> |
* with a CompletionException holding the exception as its cause. |
1950 |
|
* |
1951 |
|
* @param other the other CompletableFuture |
1952 |
|
* @param fn the function to use to compute the value of |
1953 |
|
* the returned CompletableFuture |
1954 |
|
* @return the new CompletableFuture |
1955 |
|
*/ |
1956 |
< |
public <U,V> CompletableFuture<V> thenCombine(CompletableFuture<? extends U> other, |
1957 |
< |
BiFun<? super T,? super U,? extends V> fn) { |
1958 |
< |
return doThenBiApply(other, fn, null); |
1956 |
> |
public <U,V> CompletableFuture<V> thenCombine |
1957 |
> |
(CompletableFuture<? extends U> other, |
1958 |
> |
BiFun<? super T,? super U,? extends V> fn) { |
1959 |
> |
return doThenCombine(other, fn, null); |
1960 |
|
} |
1961 |
|
|
1962 |
|
/** |
1963 |
< |
* Creates and returns a CompletableFuture that is asynchronously |
1964 |
< |
* completed using the {@link ForkJoinPool#commonPool()} with |
1965 |
< |
* the result of the given function of this and the other given |
1966 |
< |
* CompletableFuture's results when both complete. If this or |
1967 |
< |
* the other CompletableFuture complete exceptionally, then the |
1968 |
< |
* returned CompletableFuture also does so, with a |
1969 |
< |
* CompletionException holding the exception as its cause. |
1963 |
> |
* Returns a new CompletableFuture that is asynchronously completed |
1964 |
> |
* when both this and the other given CompletableFuture complete, |
1965 |
> |
* with the result of the given function of the results of the two |
1966 |
> |
* CompletableFutures from a task running in the |
1967 |
> |
* {@link ForkJoinPool#commonPool()}. |
1968 |
> |
* |
1969 |
> |
* <p>If this and/or the other CompletableFuture complete |
1970 |
> |
* exceptionally, or the supplied function throws an exception, |
1971 |
> |
* then the returned CompletableFuture completes exceptionally |
1972 |
> |
* with a CompletionException holding the exception as its cause. |
1973 |
|
* |
1974 |
|
* @param other the other CompletableFuture |
1975 |
|
* @param fn the function to use to compute the value of |
1976 |
|
* the returned CompletableFuture |
1977 |
|
* @return the new CompletableFuture |
1978 |
|
*/ |
1979 |
< |
public <U,V> CompletableFuture<V> thenCombineAsync(CompletableFuture<? extends U> other, |
1980 |
< |
BiFun<? super T,? super U,? extends V> fn) { |
1981 |
< |
return doThenBiApply(other, fn, ForkJoinPool.commonPool()); |
1979 |
> |
public <U,V> CompletableFuture<V> thenCombineAsync |
1980 |
> |
(CompletableFuture<? extends U> other, |
1981 |
> |
BiFun<? super T,? super U,? extends V> fn) { |
1982 |
> |
return doThenCombine(other, fn, ForkJoinPool.commonPool()); |
1983 |
|
} |
1984 |
|
|
1985 |
|
/** |
1986 |
< |
* Creates and returns a CompletableFuture that is |
1987 |
< |
* asynchronously completed using the given executor with the |
1988 |
< |
* result of the given function of this and the other given |
1989 |
< |
* CompletableFuture's results when both complete. If this or |
1990 |
< |
* the other CompletableFuture complete exceptionally, then the |
1991 |
< |
* returned CompletableFuture also does so, with a |
1992 |
< |
* CompletionException holding the exception as its cause. |
1986 |
> |
* Returns a new CompletableFuture that is asynchronously completed |
1987 |
> |
* when both this and the other given CompletableFuture complete, |
1988 |
> |
* with the result of the given function of the results of the two |
1989 |
> |
* CompletableFutures from a task running in the given executor. |
1990 |
> |
* |
1991 |
> |
* <p>If this and/or the other CompletableFuture complete |
1992 |
> |
* exceptionally, or the supplied function throws an exception, |
1993 |
> |
* then the returned CompletableFuture completes exceptionally |
1994 |
> |
* with a CompletionException holding the exception as its cause. |
1995 |
|
* |
1996 |
|
* @param other the other CompletableFuture |
1997 |
|
* @param fn the function to use to compute the value of |
1999 |
|
* @param executor the executor to use for asynchronous execution |
2000 |
|
* @return the new CompletableFuture |
2001 |
|
*/ |
2002 |
< |
|
2003 |
< |
public <U,V> CompletableFuture<V> thenCombineAsync(CompletableFuture<? extends U> other, |
2004 |
< |
BiFun<? super T,? super U,? extends V> fn, |
2005 |
< |
Executor executor) { |
2002 |
> |
public <U,V> CompletableFuture<V> thenCombineAsync |
2003 |
> |
(CompletableFuture<? extends U> other, |
2004 |
> |
BiFun<? super T,? super U,? extends V> fn, |
2005 |
> |
Executor executor) { |
2006 |
|
if (executor == null) throw new NullPointerException(); |
2007 |
< |
return doThenBiApply(other, fn, executor); |
2007 |
> |
return doThenCombine(other, fn, executor); |
2008 |
|
} |
2009 |
|
|
2010 |
< |
private <U,V> CompletableFuture<V> doThenBiApply(CompletableFuture<? extends U> other, |
2011 |
< |
BiFun<? super T,? super U,? extends V> fn, |
2012 |
< |
Executor e) { |
2010 |
> |
private <U,V> CompletableFuture<V> doThenCombine |
2011 |
> |
(CompletableFuture<? extends U> other, |
2012 |
> |
BiFun<? super T,? super U,? extends V> fn, |
2013 |
> |
Executor e) { |
2014 |
|
if (other == null || fn == null) throw new NullPointerException(); |
2015 |
|
CompletableFuture<V> dst = new CompletableFuture<V>(); |
2016 |
< |
BiApplyCompletion<T,U,V> d = null; |
2016 |
> |
ThenCombine<T,U,V> d = null; |
2017 |
|
Object r, s = null; |
2018 |
|
if ((r = result) == null || (s = other.result) == null) { |
2019 |
< |
d = new BiApplyCompletion<T,U,V>(this, other, fn, dst, e); |
2019 |
> |
d = new ThenCombine<T,U,V>(this, other, fn, dst, e); |
2020 |
|
CompletionNode q = null, p = new CompletionNode(d); |
2021 |
|
while ((r == null && (r = result) == null) || |
2022 |
|
(s == null && (s = other.result) == null)) { |
2060 |
|
if (ex == null) { |
2061 |
|
try { |
2062 |
|
if (e != null) |
2063 |
< |
e.execute(new AsyncBiApply<T,U,V>(t, u, fn, dst)); |
2063 |
> |
e.execute(new AsyncCombine<T,U,V>(t, u, fn, dst)); |
2064 |
|
else |
2065 |
|
v = fn.apply(t, u); |
2066 |
|
} catch (Throwable rex) { |
2076 |
|
} |
2077 |
|
|
2078 |
|
/** |
2079 |
< |
* Creates and returns a CompletableFuture that is completed with |
2080 |
< |
* the results of this and the other given CompletableFuture if |
2081 |
< |
* both complete. If this and/or the other CompletableFuture |
2082 |
< |
* complete exceptionally, then the returned CompletableFuture |
2083 |
< |
* also does so, with a CompletionException holding one of these |
2084 |
< |
* exceptions as its cause. |
2079 |
> |
* Returns a new CompletableFuture that is completed |
2080 |
> |
* when both this and the other given CompletableFuture complete, |
2081 |
> |
* after performing the given action with the results of the two |
2082 |
> |
* CompletableFutures. |
2083 |
> |
* |
2084 |
> |
* <p>If this and/or the other CompletableFuture complete |
2085 |
> |
* exceptionally, or the supplied action throws an exception, |
2086 |
> |
* then the returned CompletableFuture completes exceptionally |
2087 |
> |
* with a CompletionException holding the exception as its cause. |
2088 |
|
* |
2089 |
|
* @param other the other CompletableFuture |
2090 |
|
* @param block the action to perform before completing the |
2091 |
|
* returned CompletableFuture |
2092 |
|
* @return the new CompletableFuture |
2093 |
|
*/ |
2094 |
< |
public <U> CompletableFuture<Void> thenAcceptBoth(CompletableFuture<? extends U> other, |
2095 |
< |
BiAction<? super T, ? super U> block) { |
2096 |
< |
return doThenBiAccept(other, block, null); |
2094 |
> |
public <U> CompletableFuture<Void> thenAcceptBoth |
2095 |
> |
(CompletableFuture<? extends U> other, |
2096 |
> |
BiAction<? super T, ? super U> block) { |
2097 |
> |
return doThenAcceptBoth(other, block, null); |
2098 |
|
} |
2099 |
|
|
2100 |
|
/** |
2101 |
< |
* Creates and returns a CompletableFuture that is completed |
2102 |
< |
* asynchronously using the {@link ForkJoinPool#commonPool()} with |
2103 |
< |
* the results of this and the other given CompletableFuture when |
2104 |
< |
* both complete. If this and/or the other CompletableFuture |
2105 |
< |
* complete exceptionally, then the returned CompletableFuture |
2106 |
< |
* also does so, with a CompletionException holding one of these |
2107 |
< |
* exceptions as its cause. |
2101 |
> |
* Returns a new CompletableFuture that is asynchronously completed |
2102 |
> |
* when both this and the other given CompletableFuture complete, |
2103 |
> |
* after performing the given action with the results of the two |
2104 |
> |
* CompletableFutures from a task running in the {@link |
2105 |
> |
* ForkJoinPool#commonPool()}. |
2106 |
> |
* |
2107 |
> |
* <p>If this and/or the other CompletableFuture complete |
2108 |
> |
* exceptionally, or the supplied action throws an exception, |
2109 |
> |
* then the returned CompletableFuture completes exceptionally |
2110 |
> |
* with a CompletionException holding the exception as its cause. |
2111 |
|
* |
2112 |
|
* @param other the other CompletableFuture |
2113 |
|
* @param block the action to perform before completing the |
2114 |
|
* returned CompletableFuture |
2115 |
|
* @return the new CompletableFuture |
2116 |
|
*/ |
2117 |
< |
public <U> CompletableFuture<Void> thenAcceptBothAsync(CompletableFuture<? extends U> other, |
2118 |
< |
BiAction<? super T, ? super U> block) { |
2119 |
< |
return doThenBiAccept(other, block, ForkJoinPool.commonPool()); |
2117 |
> |
public <U> CompletableFuture<Void> thenAcceptBothAsync |
2118 |
> |
(CompletableFuture<? extends U> other, |
2119 |
> |
BiAction<? super T, ? super U> block) { |
2120 |
> |
return doThenAcceptBoth(other, block, ForkJoinPool.commonPool()); |
2121 |
|
} |
2122 |
|
|
2123 |
|
/** |
2124 |
< |
* Creates and returns a CompletableFuture that is completed |
2125 |
< |
* asynchronously using the given executor with the results of |
2126 |
< |
* this and the other given CompletableFuture when both complete. |
2127 |
< |
* If this and/or the other CompletableFuture complete |
2128 |
< |
* exceptionally, then the returned CompletableFuture also does |
2129 |
< |
* so, with a CompletionException holding one of these exceptions as |
2130 |
< |
* its cause. |
2124 |
> |
* Returns a new CompletableFuture that is asynchronously completed |
2125 |
> |
* when both this and the other given CompletableFuture complete, |
2126 |
> |
* after performing the given action with the results of the two |
2127 |
> |
* CompletableFutures from a task running in the given executor. |
2128 |
> |
* |
2129 |
> |
* <p>If this and/or the other CompletableFuture complete |
2130 |
> |
* exceptionally, or the supplied action throws an exception, |
2131 |
> |
* then the returned CompletableFuture completes exceptionally |
2132 |
> |
* with a CompletionException holding the exception as its cause. |
2133 |
|
* |
2134 |
|
* @param other the other CompletableFuture |
2135 |
|
* @param block the action to perform before completing the |
2137 |
|
* @param executor the executor to use for asynchronous execution |
2138 |
|
* @return the new CompletableFuture |
2139 |
|
*/ |
2140 |
< |
public <U> CompletableFuture<Void> thenAcceptBothAsync(CompletableFuture<? extends U> other, |
2141 |
< |
BiAction<? super T, ? super U> block, |
2142 |
< |
Executor executor) { |
2140 |
> |
public <U> CompletableFuture<Void> thenAcceptBothAsync |
2141 |
> |
(CompletableFuture<? extends U> other, |
2142 |
> |
BiAction<? super T, ? super U> block, |
2143 |
> |
Executor executor) { |
2144 |
|
if (executor == null) throw new NullPointerException(); |
2145 |
< |
return doThenBiAccept(other, block, executor); |
2145 |
> |
return doThenAcceptBoth(other, block, executor); |
2146 |
|
} |
2147 |
|
|
2148 |
< |
private <U> CompletableFuture<Void> doThenBiAccept(CompletableFuture<? extends U> other, |
2149 |
< |
BiAction<? super T,? super U> fn, |
2150 |
< |
Executor e) { |
2148 |
> |
private <U> CompletableFuture<Void> doThenAcceptBoth |
2149 |
> |
(CompletableFuture<? extends U> other, |
2150 |
> |
BiAction<? super T,? super U> fn, |
2151 |
> |
Executor e) { |
2152 |
|
if (other == null || fn == null) throw new NullPointerException(); |
2153 |
|
CompletableFuture<Void> dst = new CompletableFuture<Void>(); |
2154 |
< |
BiAcceptCompletion<T,U> d = null; |
2154 |
> |
ThenAcceptBoth<T,U> d = null; |
2155 |
|
Object r, s = null; |
2156 |
|
if ((r = result) == null || (s = other.result) == null) { |
2157 |
< |
d = new BiAcceptCompletion<T,U>(this, other, fn, dst, e); |
2157 |
> |
d = new ThenAcceptBoth<T,U>(this, other, fn, dst, e); |
2158 |
|
CompletionNode q = null, p = new CompletionNode(d); |
2159 |
|
while ((r == null && (r = result) == null) || |
2160 |
|
(s == null && (s = other.result) == null)) { |
2197 |
|
if (ex == null) { |
2198 |
|
try { |
2199 |
|
if (e != null) |
2200 |
< |
e.execute(new AsyncBiAccept<T,U>(t, u, fn, dst)); |
2200 |
> |
e.execute(new AsyncAcceptBoth<T,U>(t, u, fn, dst)); |
2201 |
|
else |
2202 |
|
fn.accept(t, u); |
2203 |
|
} catch (Throwable rex) { |
2213 |
|
} |
2214 |
|
|
2215 |
|
/** |
2216 |
< |
* Creates and returns a CompletableFuture that is completed |
2217 |
< |
* when this and the other given CompletableFuture both |
2218 |
< |
* complete. If this and/or the other CompletableFuture complete |
2219 |
< |
* exceptionally, then the returned CompletableFuture also does |
2220 |
< |
* so, with a CompletionException holding one of these exceptions as |
2221 |
< |
* its cause. |
2216 |
> |
* Returns a new CompletableFuture that is completed |
2217 |
> |
* when both this and the other given CompletableFuture complete, |
2218 |
> |
* after performing the given action. |
2219 |
> |
* |
2220 |
> |
* <p>If this and/or the other CompletableFuture complete |
2221 |
> |
* exceptionally, or the supplied action throws an exception, |
2222 |
> |
* then the returned CompletableFuture completes exceptionally |
2223 |
> |
* with a CompletionException holding the exception as its cause. |
2224 |
|
* |
2225 |
|
* @param other the other CompletableFuture |
2226 |
|
* @param action the action to perform before completing the |
2229 |
|
*/ |
2230 |
|
public CompletableFuture<Void> runAfterBoth(CompletableFuture<?> other, |
2231 |
|
Runnable action) { |
2232 |
< |
return doThenBiRun(other, action, null); |
2232 |
> |
return doRunAfterBoth(other, action, null); |
2233 |
|
} |
2234 |
|
|
2235 |
|
/** |
2236 |
< |
* Creates and returns a CompletableFuture that is completed |
2237 |
< |
* asynchronously using the {@link ForkJoinPool#commonPool()} |
2238 |
< |
* when this and the other given CompletableFuture both |
2239 |
< |
* complete. If this and/or the other CompletableFuture complete |
2240 |
< |
* exceptionally, then the returned CompletableFuture also does |
2241 |
< |
* so, with a CompletionException holding one of these exceptions as |
2242 |
< |
* its cause. |
2236 |
> |
* Returns a new CompletableFuture that is asynchronously completed |
2237 |
> |
* when both this and the other given CompletableFuture complete, |
2238 |
> |
* after performing the given action from a task running in the |
2239 |
> |
* {@link ForkJoinPool#commonPool()}. |
2240 |
> |
* |
2241 |
> |
* <p>If this and/or the other CompletableFuture complete |
2242 |
> |
* exceptionally, or the supplied action throws an exception, |
2243 |
> |
* then the returned CompletableFuture completes exceptionally |
2244 |
> |
* with a CompletionException holding the exception as its cause. |
2245 |
|
* |
2246 |
|
* @param other the other CompletableFuture |
2247 |
|
* @param action the action to perform before completing the |
2250 |
|
*/ |
2251 |
|
public CompletableFuture<Void> runAfterBothAsync(CompletableFuture<?> other, |
2252 |
|
Runnable action) { |
2253 |
< |
return doThenBiRun(other, action, ForkJoinPool.commonPool()); |
2253 |
> |
return doRunAfterBoth(other, action, ForkJoinPool.commonPool()); |
2254 |
|
} |
2255 |
|
|
2256 |
|
/** |
2257 |
< |
* Creates and returns a CompletableFuture that is completed |
2258 |
< |
* asynchronously using the given executor |
2259 |
< |
* when this and the other given CompletableFuture both |
2260 |
< |
* complete. If this and/or the other CompletableFuture complete |
2261 |
< |
* exceptionally, then the returned CompletableFuture also does |
2262 |
< |
* so, with a CompletionException holding one of these exceptions as |
2263 |
< |
* its cause. |
2257 |
> |
* Returns a new CompletableFuture that is asynchronously completed |
2258 |
> |
* when both this and the other given CompletableFuture complete, |
2259 |
> |
* after performing the given action from a task running in the |
2260 |
> |
* given executor. |
2261 |
> |
* |
2262 |
> |
* <p>If this and/or the other CompletableFuture complete |
2263 |
> |
* exceptionally, or the supplied action throws an exception, |
2264 |
> |
* then the returned CompletableFuture completes exceptionally |
2265 |
> |
* with a CompletionException holding the exception as its cause. |
2266 |
|
* |
2267 |
|
* @param other the other CompletableFuture |
2268 |
|
* @param action the action to perform before completing the |
2274 |
|
Runnable action, |
2275 |
|
Executor executor) { |
2276 |
|
if (executor == null) throw new NullPointerException(); |
2277 |
< |
return doThenBiRun(other, action, executor); |
2277 |
> |
return doRunAfterBoth(other, action, executor); |
2278 |
|
} |
2279 |
|
|
2280 |
< |
private CompletableFuture<Void> doThenBiRun(CompletableFuture<?> other, |
2281 |
< |
Runnable action, |
2282 |
< |
Executor e) { |
2280 |
> |
private CompletableFuture<Void> doRunAfterBoth(CompletableFuture<?> other, |
2281 |
> |
Runnable action, |
2282 |
> |
Executor e) { |
2283 |
|
if (other == null || action == null) throw new NullPointerException(); |
2284 |
|
CompletableFuture<Void> dst = new CompletableFuture<Void>(); |
2285 |
< |
BiRunCompletion<T> d = null; |
2285 |
> |
RunAfterBoth d = null; |
2286 |
|
Object r, s = null; |
2287 |
|
if ((r = result) == null || (s = other.result) == null) { |
2288 |
< |
d = new BiRunCompletion<T>(this, other, action, dst, e); |
2288 |
> |
d = new RunAfterBoth(this, other, action, dst, e); |
2289 |
|
CompletionNode q = null, p = new CompletionNode(d); |
2290 |
|
while ((r == null && (r = result) == null) || |
2291 |
|
(s == null && (s = other.result) == null)) { |
2331 |
|
} |
2332 |
|
|
2333 |
|
/** |
2334 |
< |
* Creates and returns a CompletableFuture that is completed with |
2335 |
< |
* the result of the given function of either this or the other |
2336 |
< |
* given CompletableFuture's results when either complete. If |
2337 |
< |
* this and/or the other CompletableFuture complete exceptionally, |
2338 |
< |
* then the returned CompletableFuture may also do so, with a |
2339 |
< |
* CompletionException holding one of these exceptions as its cause. |
2340 |
< |
* No guarantees are made about which result or exception is used |
2341 |
< |
* in the returned CompletableFuture. |
2334 |
> |
* Returns a new CompletableFuture that is completed |
2335 |
> |
* when either this or the other given CompletableFuture completes, |
2336 |
> |
* with the result of the given function of either this or the other |
2337 |
> |
* CompletableFuture's result. |
2338 |
> |
* |
2339 |
> |
* <p>If this and/or the other CompletableFuture complete |
2340 |
> |
* exceptionally, then the returned CompletableFuture may also do so, |
2341 |
> |
* with a CompletionException holding one of these exceptions as its |
2342 |
> |
* cause. No guarantees are made about which result or exception is |
2343 |
> |
* used in the returned CompletableFuture. If the supplied function |
2344 |
> |
* throws an exception, then the returned CompletableFuture completes |
2345 |
> |
* exceptionally with a CompletionException holding the exception as |
2346 |
> |
* its cause. |
2347 |
|
* |
2348 |
|
* @param other the other CompletableFuture |
2349 |
|
* @param fn the function to use to compute the value of |
2350 |
|
* the returned CompletableFuture |
2351 |
|
* @return the new CompletableFuture |
2352 |
|
*/ |
2353 |
< |
public <U> CompletableFuture<U> applyToEither(CompletableFuture<? extends T> other, |
2354 |
< |
Fun<? super T, U> fn) { |
2355 |
< |
return doOrApply(other, fn, null); |
2353 |
> |
public <U> CompletableFuture<U> applyToEither |
2354 |
> |
(CompletableFuture<? extends T> other, |
2355 |
> |
Fun<? super T, U> fn) { |
2356 |
> |
return doApplyToEither(other, fn, null); |
2357 |
|
} |
2358 |
|
|
2359 |
|
/** |
2360 |
< |
* Creates and returns a CompletableFuture that is completed |
2361 |
< |
* asynchronously using the {@link ForkJoinPool#commonPool()} with |
2362 |
< |
* the result of the given function of either this or the other |
2363 |
< |
* given CompletableFuture's results when either complete. If |
2364 |
< |
* this and/or the other CompletableFuture complete exceptionally, |
2365 |
< |
* then the returned CompletableFuture may also do so, with a |
2366 |
< |
* CompletionException holding one of these exceptions as its cause. |
2367 |
< |
* No guarantees are made about which result or exception is used |
2368 |
< |
* in the returned CompletableFuture. |
2360 |
> |
* Returns a new CompletableFuture that is asynchronously completed |
2361 |
> |
* when either this or the other given CompletableFuture completes, |
2362 |
> |
* with the result of the given function of either this or the other |
2363 |
> |
* CompletableFuture's result from a task running in the |
2364 |
> |
* {@link ForkJoinPool#commonPool()}. |
2365 |
> |
* |
2366 |
> |
* <p>If this and/or the other CompletableFuture complete |
2367 |
> |
* exceptionally, then the returned CompletableFuture may also do so, |
2368 |
> |
* with a CompletionException holding one of these exceptions as its |
2369 |
> |
* cause. No guarantees are made about which result or exception is |
2370 |
> |
* used in the returned CompletableFuture. If the supplied function |
2371 |
> |
* throws an exception, then the returned CompletableFuture completes |
2372 |
> |
* exceptionally with a CompletionException holding the exception as |
2373 |
> |
* its cause. |
2374 |
|
* |
2375 |
|
* @param other the other CompletableFuture |
2376 |
|
* @param fn the function to use to compute the value of |
2377 |
|
* the returned CompletableFuture |
2378 |
|
* @return the new CompletableFuture |
2379 |
|
*/ |
2380 |
< |
public <U> CompletableFuture<U> applyToEitherAsync(CompletableFuture<? extends T> other, |
2381 |
< |
Fun<? super T, U> fn) { |
2382 |
< |
return doOrApply(other, fn, ForkJoinPool.commonPool()); |
2380 |
> |
public <U> CompletableFuture<U> applyToEitherAsync |
2381 |
> |
(CompletableFuture<? extends T> other, |
2382 |
> |
Fun<? super T, U> fn) { |
2383 |
> |
return doApplyToEither(other, fn, ForkJoinPool.commonPool()); |
2384 |
|
} |
2385 |
|
|
2386 |
|
/** |
2387 |
< |
* Creates and returns a CompletableFuture that is completed |
2388 |
< |
* asynchronously using the given executor with the result of the |
2389 |
< |
* given function of either this or the other given |
2390 |
< |
* CompletableFuture's results when either complete. If this |
2391 |
< |
* and/or the other CompletableFuture complete exceptionally, then |
2392 |
< |
* the returned CompletableFuture may also do so, with a |
2393 |
< |
* CompletionException holding one of these exceptions as its cause. |
2394 |
< |
* No guarantees are made about which result or exception is used |
2395 |
< |
* in the returned CompletableFuture. |
2387 |
> |
* Returns a new CompletableFuture that is asynchronously completed |
2388 |
> |
* when either this or the other given CompletableFuture completes, |
2389 |
> |
* with the result of the given function of either this or the other |
2390 |
> |
* CompletableFuture's result from a task running in the |
2391 |
> |
* given executor. |
2392 |
> |
* |
2393 |
> |
* <p>If this and/or the other CompletableFuture complete |
2394 |
> |
* exceptionally, then the returned CompletableFuture may also do so, |
2395 |
> |
* with a CompletionException holding one of these exceptions as its |
2396 |
> |
* cause. No guarantees are made about which result or exception is |
2397 |
> |
* used in the returned CompletableFuture. If the supplied function |
2398 |
> |
* throws an exception, then the returned CompletableFuture completes |
2399 |
> |
* exceptionally with a CompletionException holding the exception as |
2400 |
> |
* its cause. |
2401 |
|
* |
2402 |
|
* @param other the other CompletableFuture |
2403 |
|
* @param fn the function to use to compute the value of |
2405 |
|
* @param executor the executor to use for asynchronous execution |
2406 |
|
* @return the new CompletableFuture |
2407 |
|
*/ |
2408 |
< |
public <U> CompletableFuture<U> applyToEitherAsync(CompletableFuture<? extends T> other, |
2409 |
< |
Fun<? super T, U> fn, |
2410 |
< |
Executor executor) { |
2408 |
> |
public <U> CompletableFuture<U> applyToEitherAsync |
2409 |
> |
(CompletableFuture<? extends T> other, |
2410 |
> |
Fun<? super T, U> fn, |
2411 |
> |
Executor executor) { |
2412 |
|
if (executor == null) throw new NullPointerException(); |
2413 |
< |
return doOrApply(other, fn, executor); |
2413 |
> |
return doApplyToEither(other, fn, executor); |
2414 |
|
} |
2415 |
|
|
2416 |
< |
private <U> CompletableFuture<U> doOrApply(CompletableFuture<? extends T> other, |
2417 |
< |
Fun<? super T, U> fn, |
2418 |
< |
Executor e) { |
2416 |
> |
private <U> CompletableFuture<U> doApplyToEither |
2417 |
> |
(CompletableFuture<? extends T> other, |
2418 |
> |
Fun<? super T, U> fn, |
2419 |
> |
Executor e) { |
2420 |
|
if (other == null || fn == null) throw new NullPointerException(); |
2421 |
|
CompletableFuture<U> dst = new CompletableFuture<U>(); |
2422 |
< |
OrApplyCompletion<T,U> d = null; |
2422 |
> |
ApplyToEither<T,U> d = null; |
2423 |
|
Object r; |
2424 |
|
if ((r = result) == null && (r = other.result) == null) { |
2425 |
< |
d = new OrApplyCompletion<T,U>(this, other, fn, dst, e); |
2425 |
> |
d = new ApplyToEither<T,U>(this, other, fn, dst, e); |
2426 |
|
CompletionNode q = null, p = new CompletionNode(d); |
2427 |
|
while ((r = result) == null && (r = other.result) == null) { |
2428 |
|
if (q != null) { |
2466 |
|
} |
2467 |
|
|
2468 |
|
/** |
2469 |
< |
* Creates and returns a CompletableFuture that is completed after |
2470 |
< |
* performing the given action with the result of either this or the |
2471 |
< |
* other given CompletableFuture's result, when either complete. |
2472 |
< |
* If this and/or the other CompletableFuture complete |
2473 |
< |
* exceptionally, then the returned CompletableFuture may also do |
2474 |
< |
* so, with a CompletionException holding one of these exceptions as |
2475 |
< |
* its cause. No guarantees are made about which exception is |
2476 |
< |
* used in the returned CompletableFuture. |
2469 |
> |
* Returns a new CompletableFuture that is completed |
2470 |
> |
* when either this or the other given CompletableFuture completes, |
2471 |
> |
* after performing the given action with the result of either this |
2472 |
> |
* or the other CompletableFuture's result. |
2473 |
> |
* |
2474 |
> |
* <p>If this and/or the other CompletableFuture complete |
2475 |
> |
* exceptionally, then the returned CompletableFuture may also do so, |
2476 |
> |
* with a CompletionException holding one of these exceptions as its |
2477 |
> |
* cause. No guarantees are made about which result or exception is |
2478 |
> |
* used in the returned CompletableFuture. If the supplied action |
2479 |
> |
* throws an exception, then the returned CompletableFuture completes |
2480 |
> |
* exceptionally with a CompletionException holding the exception as |
2481 |
> |
* its cause. |
2482 |
|
* |
2483 |
|
* @param other the other CompletableFuture |
2484 |
|
* @param block the action to perform before completing the |
2485 |
|
* returned CompletableFuture |
2486 |
|
* @return the new CompletableFuture |
2487 |
|
*/ |
2488 |
< |
public CompletableFuture<Void> acceptEither(CompletableFuture<? extends T> other, |
2489 |
< |
Action<? super T> block) { |
2490 |
< |
return doOrAccept(other, block, null); |
2488 |
> |
public CompletableFuture<Void> acceptEither |
2489 |
> |
(CompletableFuture<? extends T> other, |
2490 |
> |
Action<? super T> block) { |
2491 |
> |
return doAcceptEither(other, block, null); |
2492 |
|
} |
2493 |
|
|
2494 |
|
/** |
2495 |
< |
* Creates and returns a CompletableFuture that is completed |
2496 |
< |
* asynchronously using the {@link ForkJoinPool#commonPool()}, |
2497 |
< |
* performing the given action with the result of either this or |
2498 |
< |
* the other given CompletableFuture's result, when either |
2499 |
< |
* complete. If this and/or the other CompletableFuture complete |
2500 |
< |
* exceptionally, then the returned CompletableFuture may also do |
2501 |
< |
* so, with a CompletionException holding one of these exceptions as |
2502 |
< |
* its cause. No guarantees are made about which exception is |
2503 |
< |
* used in the returned CompletableFuture. |
2495 |
> |
* Returns a new CompletableFuture that is asynchronously completed |
2496 |
> |
* when either this or the other given CompletableFuture completes, |
2497 |
> |
* after performing the given action with the result of either this |
2498 |
> |
* or the other CompletableFuture's result from a task running in |
2499 |
> |
* the {@link ForkJoinPool#commonPool()}. |
2500 |
> |
* |
2501 |
> |
* <p>If this and/or the other CompletableFuture complete |
2502 |
> |
* exceptionally, then the returned CompletableFuture may also do so, |
2503 |
> |
* with a CompletionException holding one of these exceptions as its |
2504 |
> |
* cause. No guarantees are made about which result or exception is |
2505 |
> |
* used in the returned CompletableFuture. If the supplied action |
2506 |
> |
* throws an exception, then the returned CompletableFuture completes |
2507 |
> |
* exceptionally with a CompletionException holding the exception as |
2508 |
> |
* its cause. |
2509 |
|
* |
2510 |
|
* @param other the other CompletableFuture |
2511 |
|
* @param block the action to perform before completing the |
2512 |
|
* returned CompletableFuture |
2513 |
|
* @return the new CompletableFuture |
2514 |
|
*/ |
2515 |
< |
public CompletableFuture<Void> acceptEitherAsync(CompletableFuture<? extends T> other, |
2516 |
< |
Action<? super T> block) { |
2517 |
< |
return doOrAccept(other, block, ForkJoinPool.commonPool()); |
2515 |
> |
public CompletableFuture<Void> acceptEitherAsync |
2516 |
> |
(CompletableFuture<? extends T> other, |
2517 |
> |
Action<? super T> block) { |
2518 |
> |
return doAcceptEither(other, block, ForkJoinPool.commonPool()); |
2519 |
|
} |
2520 |
|
|
2521 |
|
/** |
2522 |
< |
* Creates and returns a CompletableFuture that is completed |
2523 |
< |
* asynchronously using the given executor, |
2524 |
< |
* performing the given action with the result of either this or |
2525 |
< |
* the other given CompletableFuture's result, when either |
2526 |
< |
* complete. If this and/or the other CompletableFuture complete |
2527 |
< |
* exceptionally, then the returned CompletableFuture may also do |
2528 |
< |
* so, with a CompletionException holding one of these exceptions as |
2529 |
< |
* its cause. No guarantees are made about which exception is |
2530 |
< |
* used in the returned CompletableFuture. |
2522 |
> |
* Returns a new CompletableFuture that is asynchronously completed |
2523 |
> |
* when either this or the other given CompletableFuture completes, |
2524 |
> |
* after performing the given action with the result of either this |
2525 |
> |
* or the other CompletableFuture's result from a task running in |
2526 |
> |
* the given executor. |
2527 |
> |
* |
2528 |
> |
* <p>If this and/or the other CompletableFuture complete |
2529 |
> |
* exceptionally, then the returned CompletableFuture may also do so, |
2530 |
> |
* with a CompletionException holding one of these exceptions as its |
2531 |
> |
* cause. No guarantees are made about which result or exception is |
2532 |
> |
* used in the returned CompletableFuture. If the supplied action |
2533 |
> |
* throws an exception, then the returned CompletableFuture completes |
2534 |
> |
* exceptionally with a CompletionException holding the exception as |
2535 |
> |
* its cause. |
2536 |
|
* |
2537 |
|
* @param other the other CompletableFuture |
2538 |
|
* @param block the action to perform before completing the |
2540 |
|
* @param executor the executor to use for asynchronous execution |
2541 |
|
* @return the new CompletableFuture |
2542 |
|
*/ |
2543 |
< |
public CompletableFuture<Void> acceptEitherAsync(CompletableFuture<? extends T> other, |
2544 |
< |
Action<? super T> block, |
2545 |
< |
Executor executor) { |
2543 |
> |
public CompletableFuture<Void> acceptEitherAsync |
2544 |
> |
(CompletableFuture<? extends T> other, |
2545 |
> |
Action<? super T> block, |
2546 |
> |
Executor executor) { |
2547 |
|
if (executor == null) throw new NullPointerException(); |
2548 |
< |
return doOrAccept(other, block, executor); |
2548 |
> |
return doAcceptEither(other, block, executor); |
2549 |
|
} |
2550 |
|
|
2551 |
< |
private CompletableFuture<Void> doOrAccept(CompletableFuture<? extends T> other, |
2552 |
< |
Action<? super T> fn, |
2553 |
< |
Executor e) { |
2551 |
> |
private CompletableFuture<Void> doAcceptEither |
2552 |
> |
(CompletableFuture<? extends T> other, |
2553 |
> |
Action<? super T> fn, |
2554 |
> |
Executor e) { |
2555 |
|
if (other == null || fn == null) throw new NullPointerException(); |
2556 |
|
CompletableFuture<Void> dst = new CompletableFuture<Void>(); |
2557 |
< |
OrAcceptCompletion<T> d = null; |
2557 |
> |
AcceptEither<T> d = null; |
2558 |
|
Object r; |
2559 |
|
if ((r = result) == null && (r = other.result) == null) { |
2560 |
< |
d = new OrAcceptCompletion<T>(this, other, fn, dst, e); |
2560 |
> |
d = new AcceptEither<T>(this, other, fn, dst, e); |
2561 |
|
CompletionNode q = null, p = new CompletionNode(d); |
2562 |
|
while ((r = result) == null && (r = other.result) == null) { |
2563 |
|
if (q != null) { |
2600 |
|
} |
2601 |
|
|
2602 |
|
/** |
2603 |
< |
* Creates and returns a CompletableFuture that is completed |
2604 |
< |
* after this or the other given CompletableFuture complete. If |
2605 |
< |
* this and/or the other CompletableFuture complete exceptionally, |
2606 |
< |
* then the returned CompletableFuture may also do so, with a |
2607 |
< |
* CompletionException holding one of these exceptions as its cause. |
2608 |
< |
* No guarantees are made about which exception is used in the |
2609 |
< |
* returned CompletableFuture. |
2603 |
> |
* Returns a new CompletableFuture that is completed |
2604 |
> |
* when either this or the other given CompletableFuture completes, |
2605 |
> |
* after performing the given action. |
2606 |
> |
* |
2607 |
> |
* <p>If this and/or the other CompletableFuture complete |
2608 |
> |
* exceptionally, then the returned CompletableFuture may also do so, |
2609 |
> |
* with a CompletionException holding one of these exceptions as its |
2610 |
> |
* cause. No guarantees are made about which result or exception is |
2611 |
> |
* used in the returned CompletableFuture. If the supplied action |
2612 |
> |
* throws an exception, then the returned CompletableFuture completes |
2613 |
> |
* exceptionally with a CompletionException holding the exception as |
2614 |
> |
* its cause. |
2615 |
|
* |
2616 |
|
* @param other the other CompletableFuture |
2617 |
|
* @param action the action to perform before completing the |
2620 |
|
*/ |
2621 |
|
public CompletableFuture<Void> runAfterEither(CompletableFuture<?> other, |
2622 |
|
Runnable action) { |
2623 |
< |
return doOrRun(other, action, null); |
2623 |
> |
return doRunAfterEither(other, action, null); |
2624 |
|
} |
2625 |
|
|
2626 |
|
/** |
2627 |
< |
* Creates and returns a CompletableFuture that is completed |
2628 |
< |
* asynchronously using the {@link ForkJoinPool#commonPool()} |
2629 |
< |
* after this or the other given CompletableFuture complete. If |
2630 |
< |
* this and/or the other CompletableFuture complete exceptionally, |
2631 |
< |
* then the returned CompletableFuture may also do so, with a |
2632 |
< |
* CompletionException holding one of these exceptions as its cause. |
2633 |
< |
* No guarantees are made about which exception is used in the |
2634 |
< |
* returned CompletableFuture. |
2627 |
> |
* Returns a new CompletableFuture that is asynchronously completed |
2628 |
> |
* when either this or the other given CompletableFuture completes, |
2629 |
> |
* after performing the given action from a task running in the |
2630 |
> |
* {@link ForkJoinPool#commonPool()}. |
2631 |
> |
* |
2632 |
> |
* <p>If this and/or the other CompletableFuture complete |
2633 |
> |
* exceptionally, then the returned CompletableFuture may also do so, |
2634 |
> |
* with a CompletionException holding one of these exceptions as its |
2635 |
> |
* cause. No guarantees are made about which result or exception is |
2636 |
> |
* used in the returned CompletableFuture. If the supplied action |
2637 |
> |
* throws an exception, then the returned CompletableFuture completes |
2638 |
> |
* exceptionally with a CompletionException holding the exception as |
2639 |
> |
* its cause. |
2640 |
|
* |
2641 |
|
* @param other the other CompletableFuture |
2642 |
|
* @param action the action to perform before completing the |
2643 |
|
* returned CompletableFuture |
2644 |
|
* @return the new CompletableFuture |
2645 |
|
*/ |
2646 |
< |
public CompletableFuture<Void> runAfterEitherAsync(CompletableFuture<?> other, |
2647 |
< |
Runnable action) { |
2648 |
< |
return doOrRun(other, action, ForkJoinPool.commonPool()); |
2646 |
> |
public CompletableFuture<Void> runAfterEitherAsync |
2647 |
> |
(CompletableFuture<?> other, |
2648 |
> |
Runnable action) { |
2649 |
> |
return doRunAfterEither(other, action, ForkJoinPool.commonPool()); |
2650 |
|
} |
2651 |
|
|
2652 |
|
/** |
2653 |
< |
* Creates and returns a CompletableFuture that is completed |
2654 |
< |
* asynchronously using the given executor after this or the other |
2655 |
< |
* given CompletableFuture complete. If this and/or the other |
2656 |
< |
* CompletableFuture complete exceptionally, then the returned |
2657 |
< |
* CompletableFuture may also do so, with a CompletionException |
2658 |
< |
* holding one of these exceptions as its cause. No guarantees are |
2659 |
< |
* made about which exception is used in the returned |
2660 |
< |
* CompletableFuture. |
2653 |
> |
* Returns a new CompletableFuture that is asynchronously completed |
2654 |
> |
* when either this or the other given CompletableFuture completes, |
2655 |
> |
* after performing the given action from a task running in the |
2656 |
> |
* given executor. |
2657 |
> |
* |
2658 |
> |
* <p>If this and/or the other CompletableFuture complete |
2659 |
> |
* exceptionally, then the returned CompletableFuture may also do so, |
2660 |
> |
* with a CompletionException holding one of these exceptions as its |
2661 |
> |
* cause. No guarantees are made about which result or exception is |
2662 |
> |
* used in the returned CompletableFuture. If the supplied action |
2663 |
> |
* throws an exception, then the returned CompletableFuture completes |
2664 |
> |
* exceptionally with a CompletionException holding the exception as |
2665 |
> |
* its cause. |
2666 |
|
* |
2667 |
|
* @param other the other CompletableFuture |
2668 |
|
* @param action the action to perform before completing the |
2670 |
|
* @param executor the executor to use for asynchronous execution |
2671 |
|
* @return the new CompletableFuture |
2672 |
|
*/ |
2673 |
< |
public CompletableFuture<Void> runAfterEitherAsync(CompletableFuture<?> other, |
2674 |
< |
Runnable action, |
2675 |
< |
Executor executor) { |
2673 |
> |
public CompletableFuture<Void> runAfterEitherAsync |
2674 |
> |
(CompletableFuture<?> other, |
2675 |
> |
Runnable action, |
2676 |
> |
Executor executor) { |
2677 |
|
if (executor == null) throw new NullPointerException(); |
2678 |
< |
return doOrRun(other, action, executor); |
2678 |
> |
return doRunAfterEither(other, action, executor); |
2679 |
|
} |
2680 |
|
|
2681 |
< |
private CompletableFuture<Void> doOrRun(CompletableFuture<?> other, |
2682 |
< |
Runnable action, |
2683 |
< |
Executor e) { |
2681 |
> |
private CompletableFuture<Void> doRunAfterEither |
2682 |
> |
(CompletableFuture<?> other, |
2683 |
> |
Runnable action, |
2684 |
> |
Executor e) { |
2685 |
|
if (other == null || action == null) throw new NullPointerException(); |
2686 |
|
CompletableFuture<Void> dst = new CompletableFuture<Void>(); |
2687 |
< |
OrRunCompletion<T> d = null; |
2687 |
> |
RunAfterEither d = null; |
2688 |
|
Object r; |
2689 |
|
if ((r = result) == null && (r = other.result) == null) { |
2690 |
< |
d = new OrRunCompletion<T>(this, other, action, dst, e); |
2690 |
> |
d = new RunAfterEither(this, other, action, dst, e); |
2691 |
|
CompletionNode q = null, p = new CompletionNode(d); |
2692 |
|
while ((r = result) == null && (r = other.result) == null) { |
2693 |
|
if (q != null) { |
2725 |
|
} |
2726 |
|
|
2727 |
|
/** |
2728 |
< |
* Returns a CompletableFuture (or an equivalent one) produced by |
2729 |
< |
* the given function of the result of this CompletableFuture when |
2730 |
< |
* completed. If this CompletableFuture completes exceptionally, |
2731 |
< |
* then the returned CompletableFuture also does so, with a |
2728 |
> |
* Returns a CompletableFuture that upon completion, has the same |
2729 |
> |
* value as produced by the given function of the result of this |
2730 |
> |
* CompletableFuture. |
2731 |
> |
* |
2732 |
> |
* <p>If this CompletableFuture completes exceptionally, then the |
2733 |
> |
* returned CompletableFuture also does so, with a |
2734 |
> |
* CompletionException holding this exception as its cause. |
2735 |
> |
* Similarly, if the computed CompletableFuture completes |
2736 |
> |
* exceptionally, then so does the returned CompletableFuture. |
2737 |
> |
* |
2738 |
> |
* @param fn the function returning a new CompletableFuture |
2739 |
> |
* @return the CompletableFuture |
2740 |
> |
*/ |
2741 |
> |
public <U> CompletableFuture<U> thenCompose |
2742 |
> |
(Fun<? super T, CompletableFuture<U>> fn) { |
2743 |
> |
return doThenCompose(fn, null); |
2744 |
> |
} |
2745 |
> |
|
2746 |
> |
/** |
2747 |
> |
* Returns a CompletableFuture that upon completion, has the same |
2748 |
> |
* value as that produced asynchronously using the {@link |
2749 |
> |
* ForkJoinPool#commonPool()} by the given function of the result |
2750 |
> |
* of this CompletableFuture. |
2751 |
> |
* |
2752 |
> |
* <p>If this CompletableFuture completes exceptionally, then the |
2753 |
> |
* returned CompletableFuture also does so, with a |
2754 |
> |
* CompletionException holding this exception as its cause. |
2755 |
> |
* Similarly, if the computed CompletableFuture completes |
2756 |
> |
* exceptionally, then so does the returned CompletableFuture. |
2757 |
> |
* |
2758 |
> |
* @param fn the function returning a new CompletableFuture |
2759 |
> |
* @return the CompletableFuture |
2760 |
> |
*/ |
2761 |
> |
public <U> CompletableFuture<U> thenComposeAsync |
2762 |
> |
(Fun<? super T, CompletableFuture<U>> fn) { |
2763 |
> |
return doThenCompose(fn, ForkJoinPool.commonPool()); |
2764 |
> |
} |
2765 |
> |
|
2766 |
> |
/** |
2767 |
> |
* Returns a CompletableFuture that upon completion, has the same |
2768 |
> |
* value as that produced asynchronously using the given executor |
2769 |
> |
* by the given function of this CompletableFuture. |
2770 |
> |
* |
2771 |
> |
* <p>If this CompletableFuture completes exceptionally, then the |
2772 |
> |
* returned CompletableFuture also does so, with a |
2773 |
|
* CompletionException holding this exception as its cause. |
2774 |
+ |
* Similarly, if the computed CompletableFuture completes |
2775 |
+ |
* exceptionally, then so does the returned CompletableFuture. |
2776 |
|
* |
2777 |
< |
* @param fn the function returning a new CompletableFuture. |
2778 |
< |
* @return the CompletableFuture, that {@code isDone()} upon |
2779 |
< |
* return if completed by the given function, or an exception |
2455 |
< |
* occurs. |
2777 |
> |
* @param fn the function returning a new CompletableFuture |
2778 |
> |
* @param executor the executor to use for asynchronous execution |
2779 |
> |
* @return the CompletableFuture |
2780 |
|
*/ |
2781 |
< |
public <U> CompletableFuture<U> thenCompose(Fun<? super T, |
2782 |
< |
CompletableFuture<U>> fn) { |
2781 |
> |
public <U> CompletableFuture<U> thenComposeAsync |
2782 |
> |
(Fun<? super T, CompletableFuture<U>> fn, |
2783 |
> |
Executor executor) { |
2784 |
> |
if (executor == null) throw new NullPointerException(); |
2785 |
> |
return doThenCompose(fn, executor); |
2786 |
> |
} |
2787 |
> |
|
2788 |
> |
private <U> CompletableFuture<U> doThenCompose |
2789 |
> |
(Fun<? super T, CompletableFuture<U>> fn, |
2790 |
> |
Executor e) { |
2791 |
|
if (fn == null) throw new NullPointerException(); |
2792 |
|
CompletableFuture<U> dst = null; |
2793 |
< |
ComposeCompletion<T,U> d = null; |
2793 |
> |
ThenCompose<T,U> d = null; |
2794 |
|
Object r; |
2795 |
|
if ((r = result) == null) { |
2796 |
|
dst = new CompletableFuture<U>(); |
2797 |
|
CompletionNode p = new CompletionNode |
2798 |
< |
(d = new ComposeCompletion<T,U>(this, fn, dst)); |
2798 |
> |
(d = new ThenCompose<T,U>(this, fn, dst, e)); |
2799 |
|
while ((r = result) == null) { |
2800 |
|
if (UNSAFE.compareAndSwapObject |
2801 |
|
(this, COMPLETIONS, p.next = completions, p)) |
2814 |
|
t = tr; |
2815 |
|
} |
2816 |
|
if (ex == null) { |
2817 |
< |
try { |
2818 |
< |
dst = fn.apply(t); |
2819 |
< |
} catch (Throwable rex) { |
2820 |
< |
ex = rex; |
2817 |
> |
if (e != null) { |
2818 |
> |
if (dst == null) |
2819 |
> |
dst = new CompletableFuture<U>(); |
2820 |
> |
e.execute(new AsyncCompose<T,U>(t, fn, dst)); |
2821 |
> |
} |
2822 |
> |
else { |
2823 |
> |
try { |
2824 |
> |
if ((dst = fn.apply(t)) == null) |
2825 |
> |
ex = new NullPointerException(); |
2826 |
> |
} catch (Throwable rex) { |
2827 |
> |
ex = rex; |
2828 |
> |
} |
2829 |
|
} |
2830 |
|
} |
2831 |
< |
if (dst == null) { |
2831 |
> |
if (dst == null) |
2832 |
|
dst = new CompletableFuture<U>(); |
2493 |
– |
if (ex == null) |
2494 |
– |
ex = new NullPointerException(); |
2495 |
– |
} |
2833 |
|
if (ex != null) |
2834 |
|
dst.internalComplete(null, ex); |
2835 |
|
} |
2839 |
|
} |
2840 |
|
|
2841 |
|
/** |
2842 |
< |
* Creates and returns a CompletableFuture that is completed with |
2843 |
< |
* the result of the given function of the exception triggering |
2844 |
< |
* this CompletableFuture's completion when it completes |
2845 |
< |
* exceptionally; Otherwise, if this CompletableFuture completes |
2846 |
< |
* normally, then the returned CompletableFuture also completes |
2847 |
< |
* normally with the same value. |
2842 |
> |
* Returns a new CompletableFuture that is completed when this |
2843 |
> |
* CompletableFuture completes, with the result of the given |
2844 |
> |
* function of the exception triggering this CompletableFuture's |
2845 |
> |
* completion when it completes exceptionally; otherwise, if this |
2846 |
> |
* CompletableFuture completes normally, then the returned |
2847 |
> |
* CompletableFuture also completes normally with the same value. |
2848 |
|
* |
2849 |
|
* @param fn the function to use to compute the value of the |
2850 |
|
* returned CompletableFuture if this CompletableFuture completed |
2851 |
|
* exceptionally |
2852 |
|
* @return the new CompletableFuture |
2853 |
|
*/ |
2854 |
< |
public CompletableFuture<T> exceptionally(Fun<Throwable, ? extends T> fn) { |
2854 |
> |
public CompletableFuture<T> exceptionally |
2855 |
> |
(Fun<Throwable, ? extends T> fn) { |
2856 |
|
if (fn == null) throw new NullPointerException(); |
2857 |
|
CompletableFuture<T> dst = new CompletableFuture<T>(); |
2858 |
|
ExceptionCompletion<T> d = null; |
2869 |
|
if (r != null && (d == null || d.compareAndSet(0, 1))) { |
2870 |
|
T t = null; Throwable ex, dx = null; |
2871 |
|
if (r instanceof AltResult) { |
2872 |
< |
if ((ex = ((AltResult)r).ex) != null) { |
2872 |
> |
if ((ex = ((AltResult)r).ex) != null) { |
2873 |
|
try { |
2874 |
|
t = fn.apply(ex); |
2875 |
|
} catch (Throwable rex) { |
2888 |
|
} |
2889 |
|
|
2890 |
|
/** |
2891 |
< |
* Creates and returns a CompletableFuture that is completed with |
2892 |
< |
* the result of the given function of the result and exception of |
2893 |
< |
* this CompletableFuture's completion when it completes. The |
2894 |
< |
* given function is invoked with the result (or {@code null} if |
2895 |
< |
* none) and the exception (or {@code null} if none) of this |
2896 |
< |
* CompletableFuture when complete. |
2891 |
> |
* Returns a new CompletableFuture that is completed when this |
2892 |
> |
* CompletableFuture completes, with the result of the given |
2893 |
> |
* function of the result and exception of this CompletableFuture's |
2894 |
> |
* completion. The given function is invoked with the result (or |
2895 |
> |
* {@code null} if none) and the exception (or {@code null} if none) |
2896 |
> |
* of this CompletableFuture when complete. |
2897 |
|
* |
2898 |
|
* @param fn the function to use to compute the value of the |
2899 |
|
* returned CompletableFuture |
2562 |
– |
|
2900 |
|
* @return the new CompletableFuture |
2901 |
|
*/ |
2902 |
< |
public <U> CompletableFuture<U> handle(BiFun<? super T, Throwable, ? extends U> fn) { |
2902 |
> |
public <U> CompletableFuture<U> handle |
2903 |
> |
(BiFun<? super T, Throwable, ? extends U> fn) { |
2904 |
|
if (fn == null) throw new NullPointerException(); |
2905 |
|
CompletableFuture<U> dst = new CompletableFuture<U>(); |
2906 |
|
HandleCompletion<T,U> d = null; |
2939 |
|
return dst; |
2940 |
|
} |
2941 |
|
|
2942 |
+ |
|
2943 |
+ |
/* ------------- Arbitrary-arity constructions -------------- */ |
2944 |
+ |
|
2945 |
+ |
/* |
2946 |
+ |
* The basic plan of attack is to recursively form binary |
2947 |
+ |
* completion trees of elements. This can be overkill for small |
2948 |
+ |
* sets, but scales nicely. The And/All vs Or/Any forms use the |
2949 |
+ |
* same idea, but details differ. |
2950 |
+ |
*/ |
2951 |
+ |
|
2952 |
+ |
/** |
2953 |
+ |
* Returns a new CompletableFuture that is completed when all of |
2954 |
+ |
* the given CompletableFutures complete. If any of the given |
2955 |
+ |
* CompletableFutures complete exceptionally, then the returned |
2956 |
+ |
* CompletableFuture also does so, with a CompletionException |
2957 |
+ |
* holding this exception as its cause. Otherwise, the results, |
2958 |
+ |
* if any, of the given CompletableFutures are not reflected in |
2959 |
+ |
* the returned CompletableFuture, but may be obtained by |
2960 |
+ |
* inspecting them individually. If no CompletableFutures are |
2961 |
+ |
* provided, returns a CompletableFuture completed with the value |
2962 |
+ |
* {@code null}. |
2963 |
+ |
* |
2964 |
+ |
* <p>Among the applications of this method is to await completion |
2965 |
+ |
* of a set of independent CompletableFutures before continuing a |
2966 |
+ |
* program, as in: {@code CompletableFuture.allOf(c1, c2, |
2967 |
+ |
* c3).join();}. |
2968 |
+ |
* |
2969 |
+ |
* @param cfs the CompletableFutures |
2970 |
+ |
* @return a new CompletableFuture that is completed when all of the |
2971 |
+ |
* given CompletableFutures complete |
2972 |
+ |
* @throws NullPointerException if the array or any of its elements are |
2973 |
+ |
* {@code null} |
2974 |
+ |
*/ |
2975 |
+ |
public static CompletableFuture<Void> allOf(CompletableFuture<?>... cfs) { |
2976 |
+ |
int len = cfs.length; // Directly handle empty and singleton cases |
2977 |
+ |
if (len > 1) |
2978 |
+ |
return allTree(cfs, 0, len - 1); |
2979 |
+ |
else { |
2980 |
+ |
CompletableFuture<Void> dst = new CompletableFuture<Void>(); |
2981 |
+ |
CompletableFuture<?> f; |
2982 |
+ |
if (len == 0) |
2983 |
+ |
dst.result = NIL; |
2984 |
+ |
else if ((f = cfs[0]) == null) |
2985 |
+ |
throw new NullPointerException(); |
2986 |
+ |
else { |
2987 |
+ |
ThenPropagate d = null; |
2988 |
+ |
CompletionNode p = null; |
2989 |
+ |
Object r; |
2990 |
+ |
while ((r = f.result) == null) { |
2991 |
+ |
if (d == null) |
2992 |
+ |
d = new ThenPropagate(f, dst); |
2993 |
+ |
else if (p == null) |
2994 |
+ |
p = new CompletionNode(d); |
2995 |
+ |
else if (UNSAFE.compareAndSwapObject |
2996 |
+ |
(f, COMPLETIONS, p.next = f.completions, p)) |
2997 |
+ |
break; |
2998 |
+ |
} |
2999 |
+ |
if (r != null && (d == null || d.compareAndSet(0, 1))) |
3000 |
+ |
dst.internalComplete(null, (r instanceof AltResult) ? |
3001 |
+ |
((AltResult)r).ex : null); |
3002 |
+ |
f.helpPostComplete(); |
3003 |
+ |
} |
3004 |
+ |
return dst; |
3005 |
+ |
} |
3006 |
+ |
} |
3007 |
+ |
|
3008 |
|
/** |
3009 |
< |
* Attempts to complete this CompletableFuture with |
3010 |
< |
* a {@link CancellationException}. |
3009 |
> |
* Recursively constructs an And'ed tree of CompletableFutures. |
3010 |
> |
* Called only when array known to have at least two elements. |
3011 |
> |
*/ |
3012 |
> |
private static CompletableFuture<Void> allTree(CompletableFuture<?>[] cfs, |
3013 |
> |
int lo, int hi) { |
3014 |
> |
CompletableFuture<?> fst, snd; |
3015 |
> |
int mid = (lo + hi) >>> 1; |
3016 |
> |
if ((fst = (lo == mid ? cfs[lo] : allTree(cfs, lo, mid))) == null || |
3017 |
> |
(snd = (hi == mid+1 ? cfs[hi] : allTree(cfs, mid+1, hi))) == null) |
3018 |
> |
throw new NullPointerException(); |
3019 |
> |
CompletableFuture<Void> dst = new CompletableFuture<Void>(); |
3020 |
> |
AndCompletion d = null; |
3021 |
> |
CompletionNode p = null, q = null; |
3022 |
> |
Object r = null, s = null; |
3023 |
> |
while ((r = fst.result) == null || (s = snd.result) == null) { |
3024 |
> |
if (d == null) |
3025 |
> |
d = new AndCompletion(fst, snd, dst); |
3026 |
> |
else if (p == null) |
3027 |
> |
p = new CompletionNode(d); |
3028 |
> |
else if (q == null) { |
3029 |
> |
if (UNSAFE.compareAndSwapObject |
3030 |
> |
(fst, COMPLETIONS, p.next = fst.completions, p)) |
3031 |
> |
q = new CompletionNode(d); |
3032 |
> |
} |
3033 |
> |
else if (UNSAFE.compareAndSwapObject |
3034 |
> |
(snd, COMPLETIONS, q.next = snd.completions, q)) |
3035 |
> |
break; |
3036 |
> |
} |
3037 |
> |
if ((r != null || (r = fst.result) != null) && |
3038 |
> |
(s != null || (s = snd.result) != null) && |
3039 |
> |
(d == null || d.compareAndSet(0, 1))) { |
3040 |
> |
Throwable ex; |
3041 |
> |
if (r instanceof AltResult) |
3042 |
> |
ex = ((AltResult)r).ex; |
3043 |
> |
else |
3044 |
> |
ex = null; |
3045 |
> |
if (ex == null && (s instanceof AltResult)) |
3046 |
> |
ex = ((AltResult)s).ex; |
3047 |
> |
dst.internalComplete(null, ex); |
3048 |
> |
} |
3049 |
> |
fst.helpPostComplete(); |
3050 |
> |
snd.helpPostComplete(); |
3051 |
> |
return dst; |
3052 |
> |
} |
3053 |
> |
|
3054 |
> |
/** |
3055 |
> |
* Returns a new CompletableFuture that is completed when any of |
3056 |
> |
* the given CompletableFutures complete, with the same result. |
3057 |
> |
* Otherwise, if it completed exceptionally, the returned |
3058 |
> |
* CompletableFuture also does so, with a CompletionException |
3059 |
> |
* holding this exception as its cause. If no CompletableFutures |
3060 |
> |
* are provided, returns an incomplete CompletableFuture. |
3061 |
> |
* |
3062 |
> |
* @param cfs the CompletableFutures |
3063 |
> |
* @return a new CompletableFuture that is completed with the |
3064 |
> |
* result or exception of any of the given CompletableFutures when |
3065 |
> |
* one completes |
3066 |
> |
* @throws NullPointerException if the array or any of its elements are |
3067 |
> |
* {@code null} |
3068 |
> |
*/ |
3069 |
> |
public static CompletableFuture<Object> anyOf(CompletableFuture<?>... cfs) { |
3070 |
> |
int len = cfs.length; // Same idea as allOf |
3071 |
> |
if (len > 1) |
3072 |
> |
return anyTree(cfs, 0, len - 1); |
3073 |
> |
else { |
3074 |
> |
CompletableFuture<Object> dst = new CompletableFuture<Object>(); |
3075 |
> |
CompletableFuture<?> f; |
3076 |
> |
if (len == 0) |
3077 |
> |
; // skip |
3078 |
> |
else if ((f = cfs[0]) == null) |
3079 |
> |
throw new NullPointerException(); |
3080 |
> |
else { |
3081 |
> |
ThenCopy<Object> d = null; |
3082 |
> |
CompletionNode p = null; |
3083 |
> |
Object r; |
3084 |
> |
while ((r = f.result) == null) { |
3085 |
> |
if (d == null) |
3086 |
> |
d = new ThenCopy<Object>(f, dst); |
3087 |
> |
else if (p == null) |
3088 |
> |
p = new CompletionNode(d); |
3089 |
> |
else if (UNSAFE.compareAndSwapObject |
3090 |
> |
(f, COMPLETIONS, p.next = f.completions, p)) |
3091 |
> |
break; |
3092 |
> |
} |
3093 |
> |
if (r != null && (d == null || d.compareAndSet(0, 1))) { |
3094 |
> |
Throwable ex; Object t; |
3095 |
> |
if (r instanceof AltResult) { |
3096 |
> |
ex = ((AltResult)r).ex; |
3097 |
> |
t = null; |
3098 |
> |
} |
3099 |
> |
else { |
3100 |
> |
ex = null; |
3101 |
> |
t = r; |
3102 |
> |
} |
3103 |
> |
dst.internalComplete(t, ex); |
3104 |
> |
} |
3105 |
> |
f.helpPostComplete(); |
3106 |
> |
} |
3107 |
> |
return dst; |
3108 |
> |
} |
3109 |
> |
} |
3110 |
> |
|
3111 |
> |
/** |
3112 |
> |
* Recursively constructs an Or'ed tree of CompletableFutures. |
3113 |
> |
*/ |
3114 |
> |
private static CompletableFuture<Object> anyTree(CompletableFuture<?>[] cfs, |
3115 |
> |
int lo, int hi) { |
3116 |
> |
CompletableFuture<?> fst, snd; |
3117 |
> |
int mid = (lo + hi) >>> 1; |
3118 |
> |
if ((fst = (lo == mid ? cfs[lo] : anyTree(cfs, lo, mid))) == null || |
3119 |
> |
(snd = (hi == mid+1 ? cfs[hi] : anyTree(cfs, mid+1, hi))) == null) |
3120 |
> |
throw new NullPointerException(); |
3121 |
> |
CompletableFuture<Object> dst = new CompletableFuture<Object>(); |
3122 |
> |
OrCompletion d = null; |
3123 |
> |
CompletionNode p = null, q = null; |
3124 |
> |
Object r; |
3125 |
> |
while ((r = fst.result) == null && (r = snd.result) == null) { |
3126 |
> |
if (d == null) |
3127 |
> |
d = new OrCompletion(fst, snd, dst); |
3128 |
> |
else if (p == null) |
3129 |
> |
p = new CompletionNode(d); |
3130 |
> |
else if (q == null) { |
3131 |
> |
if (UNSAFE.compareAndSwapObject |
3132 |
> |
(fst, COMPLETIONS, p.next = fst.completions, p)) |
3133 |
> |
q = new CompletionNode(d); |
3134 |
> |
} |
3135 |
> |
else if (UNSAFE.compareAndSwapObject |
3136 |
> |
(snd, COMPLETIONS, q.next = snd.completions, q)) |
3137 |
> |
break; |
3138 |
> |
} |
3139 |
> |
if ((r != null || (r = fst.result) != null || |
3140 |
> |
(r = snd.result) != null) && |
3141 |
> |
(d == null || d.compareAndSet(0, 1))) { |
3142 |
> |
Throwable ex; Object t; |
3143 |
> |
if (r instanceof AltResult) { |
3144 |
> |
ex = ((AltResult)r).ex; |
3145 |
> |
t = null; |
3146 |
> |
} |
3147 |
> |
else { |
3148 |
> |
ex = null; |
3149 |
> |
t = r; |
3150 |
> |
} |
3151 |
> |
dst.internalComplete(t, ex); |
3152 |
> |
} |
3153 |
> |
fst.helpPostComplete(); |
3154 |
> |
snd.helpPostComplete(); |
3155 |
> |
return dst; |
3156 |
> |
} |
3157 |
> |
|
3158 |
> |
/* ------------- Control and status methods -------------- */ |
3159 |
> |
|
3160 |
> |
/** |
3161 |
> |
* If not already completed, completes this CompletableFuture with |
3162 |
> |
* a {@link CancellationException}. Dependent CompletableFutures |
3163 |
> |
* that have not already completed will also complete |
3164 |
> |
* exceptionally, with a {@link CompletionException} caused by |
3165 |
> |
* this {@code CancellationException}. |
3166 |
|
* |
3167 |
|
* @param mayInterruptIfRunning this value has no effect in this |
3168 |
|
* implementation because interrupts are not used to control |
3171 |
|
* @return {@code true} if this task is now cancelled |
3172 |
|
*/ |
3173 |
|
public boolean cancel(boolean mayInterruptIfRunning) { |
3174 |
< |
Object r; |
3175 |
< |
while ((r = result) == null) { |
3176 |
< |
r = new AltResult(new CancellationException()); |
3177 |
< |
if (UNSAFE.compareAndSwapObject(this, RESULT, null, r)) { |
3178 |
< |
postComplete(); |
2620 |
< |
return true; |
2621 |
< |
} |
2622 |
< |
} |
2623 |
< |
return ((r instanceof AltResult) && |
2624 |
< |
(((AltResult)r).ex instanceof CancellationException)); |
3174 |
> |
boolean cancelled = (result == null) && |
3175 |
> |
UNSAFE.compareAndSwapObject |
3176 |
> |
(this, RESULT, null, new AltResult(new CancellationException())); |
3177 |
> |
postComplete(); |
3178 |
> |
return cancelled || isCancelled(); |
3179 |
|
} |
3180 |
|
|
3181 |
|
/** |
3187 |
|
*/ |
3188 |
|
public boolean isCancelled() { |
3189 |
|
Object r; |
3190 |
< |
return ((r = result) != null && |
3191 |
< |
(r instanceof AltResult) && |
2638 |
< |
(((AltResult)r).ex instanceof CancellationException)); |
3190 |
> |
return ((r = result) instanceof AltResult) && |
3191 |
> |
(((AltResult)r).ex instanceof CancellationException); |
3192 |
|
} |
3193 |
|
|
3194 |
|
/** |
3195 |
|
* Forcibly sets or resets the value subsequently returned by |
3196 |
< |
* method get() and related methods, whether or not already |
3197 |
< |
* completed. This method is designed for use only in error |
3198 |
< |
* recovery actions, and even in such situations may result in |
3199 |
< |
* ongoing dependent completions using established versus |
3200 |
< |
* overwritten values. |
3196 |
> |
* method {@link #get()} and related methods, whether or not |
3197 |
> |
* already completed. This method is designed for use only in |
3198 |
> |
* error recovery actions, and even in such situations may result |
3199 |
> |
* in ongoing dependent completions using established versus |
3200 |
> |
* overwritten outcomes. |
3201 |
|
* |
3202 |
|
* @param value the completion value |
3203 |
|
*/ |
3206 |
|
postComplete(); |
3207 |
|
} |
3208 |
|
|
3209 |
+ |
/** |
3210 |
+ |
* Forcibly causes subsequent invocations of method {@link #get()} |
3211 |
+ |
* and related methods to throw the given exception, whether or |
3212 |
+ |
* not already completed. This method is designed for use only in |
3213 |
+ |
* recovery actions, and even in such situations may result in |
3214 |
+ |
* ongoing dependent completions using established versus |
3215 |
+ |
* overwritten outcomes. |
3216 |
+ |
* |
3217 |
+ |
* @param ex the exception |
3218 |
+ |
*/ |
3219 |
+ |
public void obtrudeException(Throwable ex) { |
3220 |
+ |
if (ex == null) throw new NullPointerException(); |
3221 |
+ |
result = new AltResult(ex); |
3222 |
+ |
postComplete(); |
3223 |
+ |
} |
3224 |
+ |
|
3225 |
+ |
/** |
3226 |
+ |
* Returns the estimated number of CompletableFutures whose |
3227 |
+ |
* completions are awaiting completion of this CompletableFuture. |
3228 |
+ |
* This method is designed for use in monitoring system state, not |
3229 |
+ |
* for synchronization control. |
3230 |
+ |
* |
3231 |
+ |
* @return the number of dependent CompletableFutures |
3232 |
+ |
*/ |
3233 |
+ |
public int getNumberOfDependents() { |
3234 |
+ |
int count = 0; |
3235 |
+ |
for (CompletionNode p = completions; p != null; p = p.next) |
3236 |
+ |
++count; |
3237 |
+ |
return count; |
3238 |
+ |
} |
3239 |
+ |
|
3240 |
+ |
/** |
3241 |
+ |
* Returns a string identifying this CompletableFuture, as well as |
3242 |
+ |
* its completion state. The state, in brackets, contains the |
3243 |
+ |
* String {@code "Completed Normally"} or the String {@code |
3244 |
+ |
* "Completed Exceptionally"}, or the String {@code "Not |
3245 |
+ |
* completed"} followed by the number of CompletableFutures |
3246 |
+ |
* dependent upon its completion, if any. |
3247 |
+ |
* |
3248 |
+ |
* @return a string identifying this CompletableFuture, as well as its state |
3249 |
+ |
*/ |
3250 |
+ |
public String toString() { |
3251 |
+ |
Object r = result; |
3252 |
+ |
int count; |
3253 |
+ |
return super.toString() + |
3254 |
+ |
((r == null) ? |
3255 |
+ |
(((count = getNumberOfDependents()) == 0) ? |
3256 |
+ |
"[Not completed]" : |
3257 |
+ |
"[Not completed, " + count + " dependents]") : |
3258 |
+ |
(((r instanceof AltResult) && ((AltResult)r).ex != null) ? |
3259 |
+ |
"[Completed exceptionally]" : |
3260 |
+ |
"[Completed normally]")); |
3261 |
+ |
} |
3262 |
+ |
|
3263 |
|
// Unsafe mechanics |
3264 |
|
private static final sun.misc.Unsafe UNSAFE; |
3265 |
|
private static final long RESULT; |
3280 |
|
} |
3281 |
|
} |
3282 |
|
|
2676 |
– |
|
3283 |
|
/** |
3284 |
|
* Returns a sun.misc.Unsafe. Suitable for use in a 3rd party package. |
3285 |
|
* Replace with a simple call to Unsafe.getUnsafe when integrating |
3290 |
|
private static sun.misc.Unsafe getUnsafe() { |
3291 |
|
try { |
3292 |
|
return sun.misc.Unsafe.getUnsafe(); |
3293 |
< |
} catch (SecurityException se) { |
3294 |
< |
try { |
3295 |
< |
return java.security.AccessController.doPrivileged |
3296 |
< |
(new java.security |
3297 |
< |
.PrivilegedExceptionAction<sun.misc.Unsafe>() { |
3298 |
< |
public sun.misc.Unsafe run() throws Exception { |
3299 |
< |
java.lang.reflect.Field f = sun.misc |
3300 |
< |
.Unsafe.class.getDeclaredField("theUnsafe"); |
3301 |
< |
f.setAccessible(true); |
3302 |
< |
return (sun.misc.Unsafe) f.get(null); |
3303 |
< |
}}); |
3304 |
< |
} catch (java.security.PrivilegedActionException e) { |
3305 |
< |
throw new RuntimeException("Could not initialize intrinsics", |
3306 |
< |
e.getCause()); |
3307 |
< |
} |
3293 |
> |
} catch (SecurityException tryReflectionInstead) {} |
3294 |
> |
try { |
3295 |
> |
return java.security.AccessController.doPrivileged |
3296 |
> |
(new java.security.PrivilegedExceptionAction<sun.misc.Unsafe>() { |
3297 |
> |
public sun.misc.Unsafe run() throws Exception { |
3298 |
> |
Class<sun.misc.Unsafe> k = sun.misc.Unsafe.class; |
3299 |
> |
for (java.lang.reflect.Field f : k.getDeclaredFields()) { |
3300 |
> |
f.setAccessible(true); |
3301 |
> |
Object x = f.get(null); |
3302 |
> |
if (k.isInstance(x)) |
3303 |
> |
return k.cast(x); |
3304 |
> |
} |
3305 |
> |
throw new NoSuchFieldError("the Unsafe"); |
3306 |
> |
}}); |
3307 |
> |
} catch (java.security.PrivilegedActionException e) { |
3308 |
> |
throw new RuntimeException("Could not initialize intrinsics", |
3309 |
> |
e.getCause()); |
3310 |
|
} |
3311 |
|
} |
2704 |
– |
|
3312 |
|
} |