| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 org.apache.ignite.internal.marshaller.optimized; |
| |
| import java.io.IOException; |
| import java.util.concurrent.BlockingQueue; |
| import java.util.concurrent.LinkedBlockingQueue; |
| import org.apache.ignite.IgniteException; |
| import org.apache.ignite.internal.IgniteInterruptedCheckedException; |
| import org.apache.ignite.internal.util.io.GridUnsafeDataInput; |
| import org.apache.ignite.internal.util.io.GridUnsafeDataOutput; |
| import org.apache.ignite.internal.util.typedef.internal.U; |
| |
| /** |
| * Storage for object streams. |
| */ |
| class OptimizedObjectStreamRegistry { |
| /** Holders. */ |
| private static final ThreadLocal<StreamHolder> holders = new ThreadLocal<>(); |
| |
| /** Output streams pool. */ |
| private static BlockingQueue<OptimizedObjectOutputStream> outPool; |
| |
| /** Input streams pool. */ |
| private static BlockingQueue<OptimizedObjectInputStream> inPool; |
| |
| /** |
| * Ensures singleton. |
| */ |
| private OptimizedObjectStreamRegistry() { |
| // No-op. |
| } |
| |
| /** |
| * Sets streams pool size. |
| * |
| * @param size Streams pool size. |
| */ |
| static void poolSize(int size) { |
| if (size > 0) { |
| outPool = new LinkedBlockingQueue<>(size); |
| inPool = new LinkedBlockingQueue<>(size); |
| |
| for (int i = 0; i < size; i++) { |
| outPool.offer(createOut()); |
| inPool.offer(createIn()); |
| } |
| } |
| else { |
| outPool = null; |
| inPool = null; |
| } |
| } |
| |
| /** |
| * Gets output stream. |
| * |
| * @return Object output stream. |
| * @throws org.apache.ignite.internal.IgniteInterruptedCheckedException If thread is interrupted while trying to take holder from pool. |
| */ |
| static OptimizedObjectOutputStream out() throws IgniteInterruptedCheckedException { |
| if (outPool != null) { |
| try { |
| return outPool.take(); |
| } |
| catch (InterruptedException e) { |
| throw new IgniteInterruptedCheckedException( |
| "Failed to take output object stream from pool (thread interrupted).", e); |
| } |
| } |
| else |
| return holder().acquireOut(); |
| } |
| |
| /** |
| * Gets input stream. |
| * |
| * @return Object input stream. |
| * @throws org.apache.ignite.internal.IgniteInterruptedCheckedException If thread is interrupted while trying to take holder from pool. |
| */ |
| static OptimizedObjectInputStream in() throws IgniteInterruptedCheckedException { |
| if (inPool != null) { |
| try { |
| return inPool.take(); |
| } |
| catch (InterruptedException e) { |
| throw new IgniteInterruptedCheckedException( |
| "Failed to take input object stream from pool (thread interrupted).", e); |
| } |
| } |
| else |
| return holder().acquireIn(); |
| } |
| |
| /** |
| * Closes and releases output stream. |
| * |
| * @param out Object output stream. |
| */ |
| static void closeOut(OptimizedObjectOutputStream out) { |
| U.close(out, null); |
| |
| if (outPool != null) { |
| boolean b = outPool.offer(out); |
| |
| assert b; |
| } |
| else { |
| StreamHolder holder = holders.get(); |
| |
| if (holder != null) |
| holder.releaseOut(); |
| } |
| } |
| |
| /** |
| * Closes and releases input stream. |
| * |
| * @param in Object input stream. |
| */ |
| @SuppressWarnings("TypeMayBeWeakened") |
| static void closeIn(OptimizedObjectInputStream in) { |
| U.close(in, null); |
| |
| if (inPool != null) { |
| boolean b = inPool.offer(in); |
| |
| assert b; |
| } |
| else { |
| StreamHolder holder = holders.get(); |
| |
| if (holder != null) |
| holder.releaseIn(); |
| } |
| } |
| |
| /** |
| * Gets holder from pool or thread local. |
| * |
| * @return Stream holder. |
| * @throws org.apache.ignite.internal.IgniteInterruptedCheckedException If thread is interrupted while trying to take holder from pool. |
| */ |
| private static StreamHolder holder() throws IgniteInterruptedCheckedException { |
| StreamHolder holder = holders.get(); |
| |
| if (holder == null) |
| holders.set(holder = new StreamHolder()); |
| |
| return holder; |
| } |
| |
| /** |
| * Creates output stream. |
| * |
| * @return Object output stream. |
| */ |
| private static OptimizedObjectOutputStream createOut() { |
| try { |
| return new OptimizedObjectOutputStream(new GridUnsafeDataOutput(4 * 1024)); |
| } |
| catch (IOException e) { |
| throw new IgniteException("Failed to create object output stream.", e); |
| } |
| } |
| |
| /** |
| * Creates input stream. |
| * |
| * @return Object input stream. |
| */ |
| private static OptimizedObjectInputStream createIn() { |
| try { |
| return new OptimizedObjectInputStream(new GridUnsafeDataInput()); |
| } |
| catch (IOException e) { |
| throw new IgniteException("Failed to create object input stream.", e); |
| } |
| } |
| |
| /** |
| * Streams holder. |
| */ |
| private static class StreamHolder { |
| /** Output stream. */ |
| private final OptimizedObjectOutputStream out = createOut(); |
| |
| /** Input stream. */ |
| private final OptimizedObjectInputStream in = createIn(); |
| |
| /** Output streams counter. */ |
| private int outAcquireCnt; |
| |
| /** Input streams counter. */ |
| private int inAcquireCnt; |
| |
| /** |
| * Gets output stream. |
| * |
| * @return Object output stream. |
| */ |
| OptimizedObjectOutputStream acquireOut() { |
| return outAcquireCnt++ > 0 ? createOut() : out; |
| } |
| |
| /** |
| * Gets input stream. |
| * |
| * @return Object input stream. |
| */ |
| OptimizedObjectInputStream acquireIn() { |
| return inAcquireCnt++ > 0 ? createIn() : in; |
| } |
| |
| /** |
| * Releases output stream. |
| */ |
| void releaseOut() { |
| outAcquireCnt--; |
| } |
| |
| /** |
| * Releases input stream. |
| */ |
| void releaseIn() { |
| inAcquireCnt--; |
| } |
| } |
| } |