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/*
* Copyright (C) 2011 The Guava Authors
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
* in compliance with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the License
* is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
* or implied. See the License for the specific language governing permissions and limitations under
* the License.
*/
package com.google.common.util.concurrent;
import static com.google.common.base.Verify.verify;
import static com.google.common.util.concurrent.Internal.toNanosSaturated;
import static java.util.concurrent.TimeUnit.NANOSECONDS;
import com.google.common.annotations.GwtCompatible;
import com.google.common.annotations.GwtIncompatible;
import com.google.common.annotations.J2ktIncompatible;
import com.google.common.base.Preconditions;
import com.google.errorprone.annotations.CanIgnoreReturnValue;
import java.time.Duration;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.CancellationException;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Future;
import java.util.concurrent.Semaphore;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.Lock;
import org.checkerframework.checker.nullness.qual.Nullable;
/**
* Utilities for treating interruptible operations as uninterruptible. In all cases, if a thread is
* interrupted during such a call, the call continues to block until the result is available or the
* timeout elapses, and only then re-interrupts the thread.
*
* @author Anthony Zana
* @since 10.0
*/
@GwtCompatible(emulated = true)
@ElementTypesAreNonnullByDefault
public final class Uninterruptibles {
// Implementation Note: As of 3-7-11, the logic for each blocking/timeout
// methods is identical, save for method being invoked.
/** Invokes {@code latch.}{@link CountDownLatch#await() await()} uninterruptibly. */
@J2ktIncompatible
@GwtIncompatible // concurrency
public static void awaitUninterruptibly(CountDownLatch latch) {
boolean interrupted = false;
try {
while (true) {
try {
latch.await();
return;
} catch (InterruptedException e) {
interrupted = true;
}
}
} finally {
if (interrupted) {
Thread.currentThread().interrupt();
}
}
}
/**
* Invokes {@code latch.}{@link CountDownLatch#await(long, TimeUnit) await(timeout, unit)}
* uninterruptibly.
*
* @since 28.0
*/
@J2ktIncompatible
@GwtIncompatible // concurrency
public static boolean awaitUninterruptibly(CountDownLatch latch, Duration timeout) {
return awaitUninterruptibly(latch, toNanosSaturated(timeout), TimeUnit.NANOSECONDS);
}
/**
* Invokes {@code latch.}{@link CountDownLatch#await(long, TimeUnit) await(timeout, unit)}
* uninterruptibly.
*/
@J2ktIncompatible
@GwtIncompatible // concurrency
@SuppressWarnings("GoodTime") // should accept a java.time.Duration
public static boolean awaitUninterruptibly(CountDownLatch latch, long timeout, TimeUnit unit) {
boolean interrupted = false;
try {
long remainingNanos = unit.toNanos(timeout);
long end = System.nanoTime() + remainingNanos;
while (true) {
try {
// CountDownLatch treats negative timeouts just like zero.
return latch.await(remainingNanos, NANOSECONDS);
} catch (InterruptedException e) {
interrupted = true;
remainingNanos = end - System.nanoTime();
}
}
} finally {
if (interrupted) {
Thread.currentThread().interrupt();
}
}
}
/**
* Invokes {@code condition.}{@link Condition#await(long, TimeUnit) await(timeout, unit)}
* uninterruptibly.
*
* @since 28.0
*/
@J2ktIncompatible
@GwtIncompatible // concurrency
public static boolean awaitUninterruptibly(Condition condition, Duration timeout) {
return awaitUninterruptibly(condition, toNanosSaturated(timeout), TimeUnit.NANOSECONDS);
}
/**
* Invokes {@code condition.}{@link Condition#await(long, TimeUnit) await(timeout, unit)}
* uninterruptibly.
*
* @since 23.6
*/
@J2ktIncompatible
@GwtIncompatible // concurrency
@SuppressWarnings("GoodTime") // should accept a java.time.Duration
public static boolean awaitUninterruptibly(Condition condition, long timeout, TimeUnit unit) {
boolean interrupted = false;
try {
long remainingNanos = unit.toNanos(timeout);
long end = System.nanoTime() + remainingNanos;
while (true) {
try {
return condition.await(remainingNanos, NANOSECONDS);
} catch (InterruptedException e) {
interrupted = true;
remainingNanos = end - System.nanoTime();
}
}
} finally {
if (interrupted) {
Thread.currentThread().interrupt();
}
}
}
/** Invokes {@code toJoin.}{@link Thread#join() join()} uninterruptibly. */
@J2ktIncompatible
@GwtIncompatible // concurrency
public static void joinUninterruptibly(Thread toJoin) {
boolean interrupted = false;
try {
while (true) {
try {
toJoin.join();
return;
} catch (InterruptedException e) {
interrupted = true;
}
}
} finally {
if (interrupted) {
Thread.currentThread().interrupt();
}
}
}
/**
* Invokes {@code unit.}{@link TimeUnit#timedJoin(Thread, long) timedJoin(toJoin, timeout)}
* uninterruptibly.
*
* @since 28.0
*/
@J2ktIncompatible
@GwtIncompatible // concurrency
public static void joinUninterruptibly(Thread toJoin, Duration timeout) {
joinUninterruptibly(toJoin, toNanosSaturated(timeout), TimeUnit.NANOSECONDS);
}
/**
* Invokes {@code unit.}{@link TimeUnit#timedJoin(Thread, long) timedJoin(toJoin, timeout)}
* uninterruptibly.
*/
@J2ktIncompatible
@GwtIncompatible // concurrency
@SuppressWarnings("GoodTime") // should accept a java.time.Duration
public static void joinUninterruptibly(Thread toJoin, long timeout, TimeUnit unit) {
Preconditions.checkNotNull(toJoin);
boolean interrupted = false;
try {
long remainingNanos = unit.toNanos(timeout);
long end = System.nanoTime() + remainingNanos;
while (true) {
try {
// TimeUnit.timedJoin() treats negative timeouts just like zero.
NANOSECONDS.timedJoin(toJoin, remainingNanos);
return;
} catch (InterruptedException e) {
interrupted = true;
remainingNanos = end - System.nanoTime();
}
}
} finally {
if (interrupted) {
Thread.currentThread().interrupt();
}
}
}
/**
* Invokes {@code future.}{@link Future#get() get()} uninterruptibly.
*
* Similar methods:
*
*
* - To retrieve a result from a {@code Future} that is already done, use {@link
* Futures#getDone Futures.getDone}.
*
- To treat {@link InterruptedException} uniformly with other exceptions, use {@link
* Futures#getChecked(Future, Class) Futures.getChecked}.
*
- To get uninterruptibility and remove checked exceptions, use {@link
* Futures#getUnchecked}.
*
*
* @throws ExecutionException if the computation threw an exception
* @throws CancellationException if the computation was cancelled
*/
@CanIgnoreReturnValue
@ParametricNullness
public static V getUninterruptibly(Future future)
throws ExecutionException {
boolean interrupted = false;
try {
while (true) {
try {
return future.get();
} catch (InterruptedException e) {
interrupted = true;
}
}
} finally {
if (interrupted) {
Thread.currentThread().interrupt();
}
}
}
/**
* Invokes {@code future.}{@link Future#get(long, TimeUnit) get(timeout, unit)} uninterruptibly.
*
* Similar methods:
*
*
* - To retrieve a result from a {@code Future} that is already done, use {@link
* Futures#getDone Futures.getDone}.
*
- To treat {@link InterruptedException} uniformly with other exceptions, use {@link
* Futures#getChecked(Future, Class, long, TimeUnit) Futures.getChecked}.
*
- To get uninterruptibility and remove checked exceptions, use {@link
* Futures#getUnchecked}.
*
*
* @throws ExecutionException if the computation threw an exception
* @throws CancellationException if the computation was cancelled
* @throws TimeoutException if the wait timed out
* @since 28.0
*/
@CanIgnoreReturnValue
@J2ktIncompatible
@GwtIncompatible // java.time.Duration
@ParametricNullness
public static V getUninterruptibly(
Future future, Duration timeout) throws ExecutionException, TimeoutException {
return getUninterruptibly(future, toNanosSaturated(timeout), TimeUnit.NANOSECONDS);
}
/**
* Invokes {@code future.}{@link Future#get(long, TimeUnit) get(timeout, unit)} uninterruptibly.
*
* Similar methods:
*
*
* - To retrieve a result from a {@code Future} that is already done, use {@link
* Futures#getDone Futures.getDone}.
*
- To treat {@link InterruptedException} uniformly with other exceptions, use {@link
* Futures#getChecked(Future, Class, long, TimeUnit) Futures.getChecked}.
*
- To get uninterruptibility and remove checked exceptions, use {@link
* Futures#getUnchecked}.
*
*
* @throws ExecutionException if the computation threw an exception
* @throws CancellationException if the computation was cancelled
* @throws TimeoutException if the wait timed out
*/
@CanIgnoreReturnValue
@J2ktIncompatible
@GwtIncompatible // TODO
@SuppressWarnings("GoodTime") // should accept a java.time.Duration
@ParametricNullness
public static V getUninterruptibly(
Future future, long timeout, TimeUnit unit) throws ExecutionException, TimeoutException {
boolean interrupted = false;
try {
long remainingNanos = unit.toNanos(timeout);
long end = System.nanoTime() + remainingNanos;
while (true) {
try {
// Future treats negative timeouts just like zero.
return future.get(remainingNanos, NANOSECONDS);
} catch (InterruptedException e) {
interrupted = true;
remainingNanos = end - System.nanoTime();
}
}
} finally {
if (interrupted) {
Thread.currentThread().interrupt();
}
}
}
/** Invokes {@code queue.}{@link BlockingQueue#take() take()} uninterruptibly. */
@J2ktIncompatible
@GwtIncompatible // concurrency
public static E takeUninterruptibly(BlockingQueue queue) {
boolean interrupted = false;
try {
while (true) {
try {
return queue.take();
} catch (InterruptedException e) {
interrupted = true;
}
}
} finally {
if (interrupted) {
Thread.currentThread().interrupt();
}
}
}
/**
* Invokes {@code queue.}{@link BlockingQueue#put(Object) put(element)} uninterruptibly.
*
* @throws ClassCastException if the class of the specified element prevents it from being added
* to the given queue
* @throws IllegalArgumentException if some property of the specified element prevents it from
* being added to the given queue
*/
@J2ktIncompatible
@GwtIncompatible // concurrency
public static void putUninterruptibly(BlockingQueue queue, E element) {
boolean interrupted = false;
try {
while (true) {
try {
queue.put(element);
return;
} catch (InterruptedException e) {
interrupted = true;
}
}
} finally {
if (interrupted) {
Thread.currentThread().interrupt();
}
}
}
// TODO(user): Support Sleeper somehow (wrapper or interface method)?
/**
* Invokes {@code unit.}{@link TimeUnit#sleep(long) sleep(sleepFor)} uninterruptibly.
*
* @since 28.0
*/
@J2ktIncompatible
@GwtIncompatible // concurrency
public static void sleepUninterruptibly(Duration sleepFor) {
sleepUninterruptibly(toNanosSaturated(sleepFor), TimeUnit.NANOSECONDS);
}
// TODO(user): Support Sleeper somehow (wrapper or interface method)?
/** Invokes {@code unit.}{@link TimeUnit#sleep(long) sleep(sleepFor)} uninterruptibly. */
@J2ktIncompatible
@GwtIncompatible // concurrency
@SuppressWarnings("GoodTime") // should accept a java.time.Duration
public static void sleepUninterruptibly(long sleepFor, TimeUnit unit) {
boolean interrupted = false;
try {
long remainingNanos = unit.toNanos(sleepFor);
long end = System.nanoTime() + remainingNanos;
while (true) {
try {
// TimeUnit.sleep() treats negative timeouts just like zero.
NANOSECONDS.sleep(remainingNanos);
return;
} catch (InterruptedException e) {
interrupted = true;
remainingNanos = end - System.nanoTime();
}
}
} finally {
if (interrupted) {
Thread.currentThread().interrupt();
}
}
}
/**
* Invokes {@code semaphore.}{@link Semaphore#tryAcquire(int, long, TimeUnit) tryAcquire(1,
* timeout, unit)} uninterruptibly.
*
* @since 28.0
*/
@J2ktIncompatible
@GwtIncompatible // concurrency
public static boolean tryAcquireUninterruptibly(Semaphore semaphore, Duration timeout) {
return tryAcquireUninterruptibly(semaphore, toNanosSaturated(timeout), TimeUnit.NANOSECONDS);
}
/**
* Invokes {@code semaphore.}{@link Semaphore#tryAcquire(int, long, TimeUnit) tryAcquire(1,
* timeout, unit)} uninterruptibly.
*
* @since 18.0
*/
@J2ktIncompatible
@GwtIncompatible // concurrency
@SuppressWarnings("GoodTime") // should accept a java.time.Duration
public static boolean tryAcquireUninterruptibly(
Semaphore semaphore, long timeout, TimeUnit unit) {
return tryAcquireUninterruptibly(semaphore, 1, timeout, unit);
}
/**
* Invokes {@code semaphore.}{@link Semaphore#tryAcquire(int, long, TimeUnit) tryAcquire(permits,
* timeout, unit)} uninterruptibly.
*
* @since 28.0
*/
@J2ktIncompatible
@GwtIncompatible // concurrency
public static boolean tryAcquireUninterruptibly(
Semaphore semaphore, int permits, Duration timeout) {
return tryAcquireUninterruptibly(
semaphore, permits, toNanosSaturated(timeout), TimeUnit.NANOSECONDS);
}
/**
* Invokes {@code semaphore.}{@link Semaphore#tryAcquire(int, long, TimeUnit) tryAcquire(permits,
* timeout, unit)} uninterruptibly.
*
* @since 18.0
*/
@J2ktIncompatible
@GwtIncompatible // concurrency
@SuppressWarnings("GoodTime") // should accept a java.time.Duration
public static boolean tryAcquireUninterruptibly(
Semaphore semaphore, int permits, long timeout, TimeUnit unit) {
boolean interrupted = false;
try {
long remainingNanos = unit.toNanos(timeout);
long end = System.nanoTime() + remainingNanos;
while (true) {
try {
// Semaphore treats negative timeouts just like zero.
return semaphore.tryAcquire(permits, remainingNanos, NANOSECONDS);
} catch (InterruptedException e) {
interrupted = true;
remainingNanos = end - System.nanoTime();
}
}
} finally {
if (interrupted) {
Thread.currentThread().interrupt();
}
}
}
/**
* Invokes {@code lock.}{@link Lock#tryLock(long, TimeUnit) tryLock(timeout, unit)}
* uninterruptibly.
*
* @since 30.0
*/
@J2ktIncompatible
@GwtIncompatible // concurrency
public static boolean tryLockUninterruptibly(Lock lock, Duration timeout) {
return tryLockUninterruptibly(lock, toNanosSaturated(timeout), TimeUnit.NANOSECONDS);
}
/**
* Invokes {@code lock.}{@link Lock#tryLock(long, TimeUnit) tryLock(timeout, unit)}
* uninterruptibly.
*
* @since 30.0
*/
@J2ktIncompatible
@GwtIncompatible // concurrency
@SuppressWarnings("GoodTime") // should accept a java.time.Duration
public static boolean tryLockUninterruptibly(Lock lock, long timeout, TimeUnit unit) {
boolean interrupted = false;
try {
long remainingNanos = unit.toNanos(timeout);
long end = System.nanoTime() + remainingNanos;
while (true) {
try {
return lock.tryLock(remainingNanos, NANOSECONDS);
} catch (InterruptedException e) {
interrupted = true;
remainingNanos = end - System.nanoTime();
}
}
} finally {
if (interrupted) {
Thread.currentThread().interrupt();
}
}
}
/**
* Invokes {@code executor.}{@link ExecutorService#awaitTermination(long, TimeUnit)
* awaitTermination(long, TimeUnit)} uninterruptibly with no timeout.
*
* @since 30.0
*/
@J2ktIncompatible
@GwtIncompatible // concurrency
public static void awaitTerminationUninterruptibly(ExecutorService executor) {
// TODO(cpovirk): We could optimize this to avoid calling nanoTime() at all.
verify(awaitTerminationUninterruptibly(executor, Long.MAX_VALUE, NANOSECONDS));
}
/**
* Invokes {@code executor.}{@link ExecutorService#awaitTermination(long, TimeUnit)
* awaitTermination(long, TimeUnit)} uninterruptibly.
*
* @since 30.0
*/
@J2ktIncompatible
@GwtIncompatible // concurrency
public static boolean awaitTerminationUninterruptibly(
ExecutorService executor, Duration timeout) {
return awaitTerminationUninterruptibly(executor, toNanosSaturated(timeout), NANOSECONDS);
}
/**
* Invokes {@code executor.}{@link ExecutorService#awaitTermination(long, TimeUnit)
* awaitTermination(long, TimeUnit)} uninterruptibly.
*
* @since 30.0
*/
@J2ktIncompatible
@GwtIncompatible // concurrency
@SuppressWarnings("GoodTime")
public static boolean awaitTerminationUninterruptibly(
ExecutorService executor, long timeout, TimeUnit unit) {
boolean interrupted = false;
try {
long remainingNanos = unit.toNanos(timeout);
long end = System.nanoTime() + remainingNanos;
while (true) {
try {
return executor.awaitTermination(remainingNanos, NANOSECONDS);
} catch (InterruptedException e) {
interrupted = true;
remainingNanos = end - System.nanoTime();
}
}
} finally {
if (interrupted) {
Thread.currentThread().interrupt();
}
}
}
// TODO(user): Add support for waitUninterruptibly.
private Uninterruptibles() {}
}
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