550 |
|
} |
551 |
|
} |
552 |
|
|
553 |
+ |
static class CountingRejectingExecutor implements Executor { |
554 |
+ |
final RejectedExecutionException ex = new RejectedExecutionException(); |
555 |
+ |
final AtomicInteger count = new AtomicInteger(0); |
556 |
+ |
public void execute(Runnable r) { |
557 |
+ |
count.getAndIncrement(); |
558 |
+ |
throw ex; |
559 |
+ |
} |
560 |
+ |
} |
561 |
+ |
|
562 |
|
// Used for explicit executor tests |
563 |
|
static final class ThreadExecutor implements Executor { |
564 |
|
final AtomicInteger count = new AtomicInteger(0); |
1243 |
|
r.assertInvoked(); |
1244 |
|
}} |
1245 |
|
|
1246 |
+ |
public void testRunAsync_rejectingExecutor() { |
1247 |
+ |
CountingRejectingExecutor e = new CountingRejectingExecutor(); |
1248 |
+ |
try { |
1249 |
+ |
CompletableFuture.runAsync(() -> {}, e); |
1250 |
+ |
shouldThrow(); |
1251 |
+ |
} catch (Throwable t) { |
1252 |
+ |
assertSame(e.ex, t); |
1253 |
+ |
} |
1254 |
+ |
|
1255 |
+ |
assertEquals(1, e.count.get()); |
1256 |
+ |
} |
1257 |
+ |
|
1258 |
|
/** |
1259 |
|
* supplyAsync completes with result of supplier |
1260 |
|
*/ |
1289 |
|
r.assertInvoked(); |
1290 |
|
}} |
1291 |
|
|
1292 |
+ |
public void testSupplyAsync_rejectingExecutor() { |
1293 |
+ |
CountingRejectingExecutor e = new CountingRejectingExecutor(); |
1294 |
+ |
try { |
1295 |
+ |
CompletableFuture.supplyAsync(() -> null, e); |
1296 |
+ |
shouldThrow(); |
1297 |
+ |
} catch (Throwable t) { |
1298 |
+ |
assertSame(e.ex, t); |
1299 |
+ |
} |
1300 |
+ |
|
1301 |
+ |
assertEquals(1, e.count.get()); |
1302 |
+ |
} |
1303 |
+ |
|
1304 |
|
// seq completion methods |
1305 |
|
|
1306 |
|
/** |
2700 |
|
for (ExecutionMode m : ExecutionMode.values()) |
2701 |
|
for (Integer v1 : new Integer[] { 1, null }) |
2702 |
|
for (Integer v2 : new Integer[] { 2, null }) |
2703 |
+ |
for (boolean pushNop : new boolean[] { true, false }) |
2704 |
|
{ |
2705 |
|
final CompletableFuture<Integer> f = new CompletableFuture<>(); |
2706 |
|
final CompletableFuture<Integer> g = new CompletableFuture<>(); |
2713 |
|
checkIncomplete(h1); |
2714 |
|
rs[0].assertNotInvoked(); |
2715 |
|
rs[1].assertNotInvoked(); |
2716 |
+ |
if (pushNop) { // ad hoc test of intra-completion interference |
2717 |
+ |
m.thenRun(f, () -> {}); |
2718 |
+ |
m.thenRun(g, () -> {}); |
2719 |
+ |
} |
2720 |
|
f.complete(v1); |
2721 |
|
checkCompletedNormally(h0, null); |
2722 |
|
checkCompletedNormally(h1, null); |
3359 |
|
* Test submissions to an executor that rejects all tasks. |
3360 |
|
*/ |
3361 |
|
public void testRejectingExecutor() { |
3362 |
< |
final RejectedExecutionException ex = new RejectedExecutionException(); |
3363 |
< |
final Executor e = (Runnable r) -> { throw ex; }; |
3364 |
< |
|
3327 |
< |
for (Integer v : new Integer[] { 1, null }) { |
3362 |
> |
for (Integer v : new Integer[] { 1, null }) |
3363 |
> |
{ |
3364 |
> |
final CountingRejectingExecutor e = new CountingRejectingExecutor(); |
3365 |
|
|
3366 |
|
final CompletableFuture<Integer> complete = CompletableFuture.completedFuture(v); |
3367 |
|
final CompletableFuture<Integer> incomplete = new CompletableFuture<>(); |
3392 |
|
|
3393 |
|
for (CompletableFuture<?> future : fs) { |
3394 |
|
if (src.isDone()) |
3395 |
< |
checkCompletedWithWrappedException(future, ex); |
3395 |
> |
checkCompletedWithWrappedException(future, e.ex); |
3396 |
|
else |
3397 |
|
checkIncomplete(future); |
3398 |
|
} |
3429 |
|
fs.add(incomplete.runAfterEitherAsync(complete, () -> {}, e)); |
3430 |
|
|
3431 |
|
for (CompletableFuture<?> future : fs) |
3432 |
< |
checkCompletedWithWrappedException(future, ex); |
3432 |
> |
checkCompletedWithWrappedException(future, e.ex); |
3433 |
|
futures.addAll(fs); |
3434 |
|
} |
3435 |
|
|
3436 |
|
incomplete.complete(v); |
3437 |
|
|
3438 |
|
for (CompletableFuture<?> future : futures) |
3439 |
< |
checkCompletedWithWrappedException(future, ex); |
3440 |
< |
} |
3441 |
< |
} |
3439 |
> |
checkCompletedWithWrappedException(future, e.ex); |
3440 |
> |
|
3441 |
> |
assertEquals(futures.size(), e.count.get()); |
3442 |
> |
}} |
3443 |
|
|
3444 |
|
/** |
3445 |
|
* Test submissions to an executor that rejects all tasks, but |
3447 |
|
* explicitly completed. |
3448 |
|
*/ |
3449 |
|
public void testRejectingExecutorNeverInvoked() { |
3450 |
< |
final RejectedExecutionException ex = new RejectedExecutionException(); |
3451 |
< |
class CountingRejectingExecutor implements Executor { |
3414 |
< |
final AtomicInteger count = new AtomicInteger(0); |
3415 |
< |
public void execute(Runnable r) { |
3416 |
< |
count.getAndIncrement(); |
3417 |
< |
throw ex; |
3418 |
< |
} |
3419 |
< |
} |
3450 |
> |
for (Integer v : new Integer[] { 1, null }) |
3451 |
> |
{ |
3452 |
|
final CountingRejectingExecutor e = new CountingRejectingExecutor(); |
3453 |
|
|
3422 |
– |
for (Integer v : new Integer[] { 1, null }) { |
3423 |
– |
|
3454 |
|
final CompletableFuture<Integer> complete = CompletableFuture.completedFuture(v); |
3455 |
|
final CompletableFuture<Integer> incomplete = new CompletableFuture<>(); |
3456 |
|
|
3498 |
|
checkCompletedNormally(future, null); |
3499 |
|
|
3500 |
|
assertEquals(0, e.count.get()); |
3501 |
< |
|
3472 |
< |
} |
3473 |
< |
} |
3501 |
> |
}} |
3502 |
|
|
3503 |
|
/** |
3504 |
|
* toCompletableFuture returns this CompletableFuture. |
4139 |
|
Monad.plus(godot, Monad.unit(5L))); |
4140 |
|
} |
4141 |
|
|
4142 |
+ |
/** Test long recursive chains of CompletableFutures with cascading completions */ |
4143 |
+ |
public void testRecursiveChains() throws Throwable { |
4144 |
+ |
for (ExecutionMode m : ExecutionMode.values()) |
4145 |
+ |
for (boolean addDeadEnds : new boolean[] { true, false }) |
4146 |
+ |
{ |
4147 |
+ |
final int val = 42; |
4148 |
+ |
final int n = expensiveTests ? 1_000 : 2; |
4149 |
+ |
CompletableFuture<Integer> head = new CompletableFuture<>(); |
4150 |
+ |
CompletableFuture<Integer> tail = head; |
4151 |
+ |
for (int i = 0; i < n; i++) { |
4152 |
+ |
if (addDeadEnds) m.thenApply(tail, v -> v + 1); |
4153 |
+ |
tail = m.thenApply(tail, v -> v + 1); |
4154 |
+ |
if (addDeadEnds) m.applyToEither(tail, tail, v -> v + 1); |
4155 |
+ |
tail = m.applyToEither(tail, tail, v -> v + 1); |
4156 |
+ |
if (addDeadEnds) m.thenCombine(tail, tail, (v, w) -> v + 1); |
4157 |
+ |
tail = m.thenCombine(tail, tail, (v, w) -> v + 1); |
4158 |
+ |
} |
4159 |
+ |
head.complete(val); |
4160 |
+ |
assertEquals(val + 3 * n, (int) tail.join()); |
4161 |
+ |
}} |
4162 |
+ |
|
4163 |
|
/** |
4164 |
|
* A single CompletableFuture with many dependents. |
4165 |
|
* A demo of scalability - runtime is O(n). |
4166 |
|
*/ |
4167 |
|
public void testManyDependents() throws Throwable { |
4168 |
< |
final int n = 1_000; |
4168 |
> |
final int n = expensiveTests ? 1_000_000 : 10; |
4169 |
|
final CompletableFuture<Void> head = new CompletableFuture<>(); |
4170 |
|
final CompletableFuture<Void> complete = CompletableFuture.completedFuture((Void)null); |
4171 |
|
final AtomicInteger count = new AtomicInteger(0); |
4192 |
|
assertEquals(5 * 3 * n, count.get()); |
4193 |
|
} |
4194 |
|
|
4195 |
+ |
/** ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest tck */ |
4196 |
+ |
public void testCoCompletionGarbageRetention() throws Throwable { |
4197 |
+ |
final int n = expensiveTests ? 1_000_000 : 10; |
4198 |
+ |
final CompletableFuture<Integer> incomplete = new CompletableFuture<>(); |
4199 |
+ |
CompletableFuture<Integer> f; |
4200 |
+ |
for (int i = 0; i < n; i++) { |
4201 |
+ |
f = new CompletableFuture<>(); |
4202 |
+ |
f.runAfterEither(incomplete, () -> {}); |
4203 |
+ |
f.complete(null); |
4204 |
+ |
|
4205 |
+ |
f = new CompletableFuture<>(); |
4206 |
+ |
f.acceptEither(incomplete, (x) -> {}); |
4207 |
+ |
f.complete(null); |
4208 |
+ |
|
4209 |
+ |
f = new CompletableFuture<>(); |
4210 |
+ |
f.applyToEither(incomplete, (x) -> x); |
4211 |
+ |
f.complete(null); |
4212 |
+ |
|
4213 |
+ |
f = new CompletableFuture<>(); |
4214 |
+ |
CompletableFuture.anyOf(new CompletableFuture<?>[] { f, incomplete }); |
4215 |
+ |
f.complete(null); |
4216 |
+ |
} |
4217 |
+ |
|
4218 |
+ |
for (int i = 0; i < n; i++) { |
4219 |
+ |
f = new CompletableFuture<>(); |
4220 |
+ |
incomplete.runAfterEither(f, () -> {}); |
4221 |
+ |
f.complete(null); |
4222 |
+ |
|
4223 |
+ |
f = new CompletableFuture<>(); |
4224 |
+ |
incomplete.acceptEither(f, (x) -> {}); |
4225 |
+ |
f.complete(null); |
4226 |
+ |
|
4227 |
+ |
f = new CompletableFuture<>(); |
4228 |
+ |
incomplete.applyToEither(f, (x) -> x); |
4229 |
+ |
f.complete(null); |
4230 |
+ |
|
4231 |
+ |
f = new CompletableFuture<>(); |
4232 |
+ |
CompletableFuture.anyOf(new CompletableFuture<?>[] { incomplete, f }); |
4233 |
+ |
f.complete(null); |
4234 |
+ |
} |
4235 |
+ |
} |
4236 |
+ |
|
4237 |
+ |
/* |
4238 |
+ |
* Tests below currently fail in stress mode due to memory retention. |
4239 |
+ |
* ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest tck |
4240 |
+ |
*/ |
4241 |
+ |
|
4242 |
+ |
/** Checks for garbage retention with anyOf. */ |
4243 |
+ |
public void testAnyOfGarbageRetention() throws Throwable { |
4244 |
+ |
for (Integer v : new Integer[] { 1, null }) |
4245 |
+ |
{ |
4246 |
+ |
final int n = expensiveTests ? 100_000 : 10; |
4247 |
+ |
CompletableFuture<Integer>[] fs |
4248 |
+ |
= (CompletableFuture<Integer>[]) new CompletableFuture<?>[100]; |
4249 |
+ |
for (int i = 0; i < fs.length; i++) |
4250 |
+ |
fs[i] = new CompletableFuture<>(); |
4251 |
+ |
fs[fs.length - 1].complete(v); |
4252 |
+ |
for (int i = 0; i < n; i++) |
4253 |
+ |
checkCompletedNormally(CompletableFuture.anyOf(fs), v); |
4254 |
+ |
}} |
4255 |
+ |
|
4256 |
+ |
/** Checks for garbage retention with allOf. */ |
4257 |
+ |
public void testCancelledAllOfGarbageRetention() throws Throwable { |
4258 |
+ |
final int n = expensiveTests ? 100_000 : 10; |
4259 |
+ |
CompletableFuture<Integer>[] fs |
4260 |
+ |
= (CompletableFuture<Integer>[]) new CompletableFuture<?>[100]; |
4261 |
+ |
for (int i = 0; i < fs.length; i++) |
4262 |
+ |
fs[i] = new CompletableFuture<>(); |
4263 |
+ |
for (int i = 0; i < n; i++) |
4264 |
+ |
assertTrue(CompletableFuture.allOf(fs).cancel(false)); |
4265 |
+ |
} |
4266 |
+ |
|
4267 |
|
// static <U> U join(CompletionStage<U> stage) { |
4268 |
|
// CompletableFuture<U> f = new CompletableFuture<>(); |
4269 |
|
// stage.whenComplete((v, ex) -> { |