94 lines
2.5 KiB
Java
94 lines
2.5 KiB
Java
/*
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* Copyright 2013 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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package io.netty.util.internal;
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import io.netty.util.ReferenceCountUtil;
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import io.netty.util.concurrent.Promise;
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import io.netty.util.internal.ObjectPool.Handle;
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/**
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* Some pending write which should be picked up later.
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*/
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public final class PendingWrite {
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private static final ObjectPool<PendingWrite> RECYCLER = ObjectPool.newPool(PendingWrite::new);
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/**
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* Create a new empty {@link RecyclableArrayList} instance
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*/
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public static PendingWrite newInstance(Object msg, Promise<Void> promise) {
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PendingWrite pending = RECYCLER.get();
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pending.msg = msg;
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pending.promise = promise;
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return pending;
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}
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private final Handle<PendingWrite> handle;
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private Object msg;
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private Promise<Void> promise;
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private PendingWrite(Handle<PendingWrite> handle) {
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this.handle = handle;
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}
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/**
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* Clear and recycle this instance.
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*/
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public boolean recycle() {
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msg = null;
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promise = null;
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handle.recycle(this);
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return true;
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}
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/**
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* Fails the underlying {@link Promise} with the given cause and recycle this instance.
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*/
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public boolean failAndRecycle(Throwable cause) {
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ReferenceCountUtil.release(msg);
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if (promise != null) {
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promise.setFailure(cause);
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}
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return recycle();
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}
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/**
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* Mark the underlying {@link Promise} successfully and recycle this instance.
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*/
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public boolean successAndRecycle() {
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if (promise != null) {
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promise.setSuccess(null);
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}
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return recycle();
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}
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public Object msg() {
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return msg;
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}
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public Promise<Void> promise() {
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return promise;
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}
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/**
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* Recycle this instance and return the {@link Promise}.
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*/
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public Promise<Void> recycleAndGet() {
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Promise<Void> promise = this.promise;
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recycle();
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return promise;
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}
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}
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