socketio-netty

public final class QueueFactory {        private static final boolean useUnsafe = DetectionUtil.hasUnsafe();    private static final InternalLogger LOGGER = InternalLoggerFactory.getInstance(QueueFactory.class);        private QueueFactory() {        // only use static methods!    }            /**     * Create a new unbound {@link BlockingQueue}      *      * @param itemClass  the {@link Class} type which will be used as {@link BlockingQueue} items     * @return queue     the {@link BlockingQueue} implementation     */    public static <T> BlockingQueue<T> createQueue(Class<T> itemClass) {        // if we run in java >=7 its the best to just use the LinkedTransferQueue which        // comes with java bundled. See #273        if (DetectionUtil.javaVersion() >= 7)  {            return new java.util.concurrent.LinkedTransferQueue<T>();        }                try {            if (useUnsafe) {                return new LinkedTransferQueue<T>();            }        } catch (Throwable t) {            // For whatever reason an exception was thrown while loading the LinkedTransferQueue            //            // This mostly happens because of a custom classloader or security policy that did not allow us to access the            // com.sun.Unmisc class. So just log it and fallback to the old LegacyLinkedTransferQueue that works in all cases            if (LOGGER.isDebugEnabled()) {                LOGGER.debug("Unable to instance LinkedTransferQueue, fallback to LegacyLinkedTransferQueue", t);            }        }                return new LegacyLinkedTransferQueue<T>();           }        /**     * Create a new unbound {@link BlockingQueue}      *      * @param collection  the collection which should get copied to the newly created {@link BlockingQueue}     * @param itemClass   the {@link Class} type which will be used as {@link BlockingQueue} items     * @return queue      the {@link BlockingQueue} implementation     */    public static <T> BlockingQueue<T> createQueue(Collection<? extends T> collection, Class<T> itemClass) {        // if we run in java >=7 its the best to just use the LinkedTransferQueue which        // comes with java bundled. See #273        if (DetectionUtil.javaVersion() >= 7)  {            return new java.util.concurrent.LinkedTransferQueue<T>();        }                try {            if (useUnsafe) {                return new LinkedTransferQueue<T>(collection);            }        } catch (Throwable t) {            // For whatever reason an exception was thrown while loading the LinkedTransferQueue            //            // This mostly happens because of a custom classloader or security policy that did not allow us to access the            // com.sun.Unmisc class. So just log it and fallback to the old LegacyLinkedTransferQueue that works in all cases            if (LOGGER.isDebugEnabled()) {                LOGGER.debug("Unable to instance LinkedTransferQueue, fallback to LegacyLinkedTransferQueue", t);            }         }                 return new LegacyLinkedTransferQueue<T>(collection);            }}

public final class QueueFactory {        private static final boolean useUnsafe = DetectionUtil.hasUnsafe();    private static final InternalLogger LOGGER = InternalLoggerFactory.getInstance(QueueFactory.class);        private QueueFactory() {        // only use static methods!    }            /**     * Create a new unbound {@link BlockingQueue}      *      * @param itemClass  the {@link Class} type which will be used as {@link BlockingQueue} items     * @return queue     the {@link BlockingQueue} implementation     */    public static <T> BlockingQueue<T> createQueue(Class<T> itemClass) {        // if we run in java >=7 its the best to just use the LinkedTransferQueue which        // comes with java bundled. See #273        if (DetectionUtil.javaVersion() >= 6)  {            return new jsr166y.LinkedTransferQueue<T>();        }                try {            if (useUnsafe) {                return new LinkedTransferQueue<T>();            }        } catch (Throwable t) {            // For whatever reason an exception was thrown while loading the LinkedTransferQueue            //            // This mostly happens because of a custom classloader or security policy that did not allow us to access the            // com.sun.Unmisc class. So just log it and fallback to the old LegacyLinkedTransferQueue that works in all cases            if (LOGGER.isDebugEnabled()) {                LOGGER.debug("Unable to instance LinkedTransferQueue, fallback to LegacyLinkedTransferQueue", t);            }        }                return new LegacyLinkedTransferQueue<T>();           }        /**     * Create a new unbound {@link BlockingQueue}      *      * @param collection  the collection which should get copied to the newly created {@link BlockingQueue}     * @param itemClass   the {@link Class} type which will be used as {@link BlockingQueue} items     * @return queue      the {@link BlockingQueue} implementation     */    public static <T> BlockingQueue<T> createQueue(Collection<? extends T> collection, Class<T> itemClass) {        // if we run in java >=7 its the best to just use the LinkedTransferQueue which        // comes with java bundled. See #273        if (DetectionUtil.javaVersion() >= 6)  {            return new jsr166y.LinkedTransferQueue<T>();        }                try {            if (useUnsafe) {                return new LinkedTransferQueue<T>(collection);            }        } catch (Throwable t) {            // For whatever reason an exception was thrown while loading the LinkedTransferQueue            //            // This mostly happens because of a custom classloader or security policy that did not allow us to access the            // com.sun.Unmisc class. So just log it and fallback to the old LegacyLinkedTransferQueue that works in all cases            if (LOGGER.isDebugEnabled()) {                LOGGER.debug("Unable to instance LinkedTransferQueue, fallback to LegacyLinkedTransferQueue", t);            }         }                 return new LegacyLinkedTransferQueue<T>(collection);            }}