com.github.richardballard.arbeeutils.concurrent.MoreUninterruptibles Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of arbee-utils Show documentation
A collection of utilities that I find useful across various projects
There is a newer version: 2.0
/*
 * (C) Copyright 2016 Richard Ballard.
 *
 * 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.github.richardballard.arbeeutils.concurrent;

import org.jetbrains.annotations.NotNull;

import java.time.Duration;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.StampedLock;

/**
 * Based on {@link com.google.common.util.concurrent.Uninterruptibles} but with additional cases handled.
 */
public enum MoreUninterruptibles {
    ;

    /**
     * Invokes {@link Lock#tryLock(long, TimeUnit)} uninterruptibly
     */
    public static boolean tryLockUninterruptibly(@NotNull final Lock lock,
                                                 @NotNull final Duration timeout) {
        assert lock != null;
        assert timeout != null;

        boolean interrupted = false;
        try {
            while (true) {
                try {
                    return lock.tryLock(timeout.toNanos(),
                                        TimeUnit.NANOSECONDS);
                }
                catch(final InterruptedException ignored) {
                    interrupted = true;
                }
            }
        }
        finally {
            if (interrupted) {
                Thread.currentThread().interrupt();
            }
        }
    }

    /**
     * Invokes {@link StampedLock#tryReadLock(long, TimeUnit)} uninterruptibly
     */
    public static long tryReadLockUninterruptibly(@NotNull final StampedLock lock,
                                                  @NotNull final Duration timeout) {
        assert lock != null;
        assert timeout != null;

        boolean interrupted = false;
        try {
            while (true) {
                try {
                    return lock.tryReadLock(timeout.toNanos(),
                                            TimeUnit.NANOSECONDS);
                }
                catch(final InterruptedException ignored) {
                    interrupted = true;
                }
            }
        }
        finally {
            if (interrupted) {
                Thread.currentThread().interrupt();
            }
        }
    }


    /**
     * Invokes {@link StampedLock#tryWriteLock(long, TimeUnit)} uninterruptibly
     */
    public static long tryWriteLockUninterruptibly(@NotNull final StampedLock lock,
                                                   @NotNull final Duration timeout) {
        assert lock != null;
        assert timeout != null;

        boolean interrupted = false;
        try {
            while (true) {
                try {
                    return lock.tryWriteLock(timeout.toNanos(),
                                             TimeUnit.NANOSECONDS);
                }
                catch(final InterruptedException ignored) {
                    interrupted = true;
                }
            }
        }
        finally {
            if (interrupted) {
                Thread.currentThread().interrupt();
            }
        }
    }
}