795f318c3c
Motivation: SelectedSelectionKeySet currently uses 2 arrays internally and users are expected to call flip() to access the underlying array and switch the active array. However we do not concurrently use 2 arrays at the same time and we can get away with using a single array if we are careful about when we reset the elements of the array. Modifications: - Introduce SelectedSelectionKeySetSelector which wraps a Selector and ensures we reset the underlying SelectedSelectionKeySet data structures before we select - The loop bounds in NioEventLoop#processSelectedKeysOptimized can be defined more precisely because we know the real size of the underlying array Result: Fixes https://github.com/netty/netty/issues/6058
81 lines
2.1 KiB
Java
81 lines
2.1 KiB
Java
/*
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* Copyright 2017 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.channel.nio;
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import java.io.IOException;
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import java.nio.channels.SelectionKey;
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import java.nio.channels.Selector;
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import java.nio.channels.spi.SelectorProvider;
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import java.util.Set;
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final class SelectedSelectionKeySetSelector extends Selector {
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private final SelectedSelectionKeySet selectionKeys;
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private final Selector delegate;
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SelectedSelectionKeySetSelector(Selector delegate, SelectedSelectionKeySet selectionKeys) {
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this.delegate = delegate;
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this.selectionKeys = selectionKeys;
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}
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@Override
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public boolean isOpen() {
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return delegate.isOpen();
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}
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@Override
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public SelectorProvider provider() {
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return delegate.provider();
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}
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@Override
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public Set<SelectionKey> keys() {
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return delegate.keys();
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}
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@Override
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public Set<SelectionKey> selectedKeys() {
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return delegate.selectedKeys();
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}
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@Override
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public int selectNow() throws IOException {
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selectionKeys.reset();
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return delegate.selectNow();
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}
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@Override
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public int select(long timeout) throws IOException {
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selectionKeys.reset();
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return delegate.select(timeout);
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}
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@Override
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public int select() throws IOException {
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selectionKeys.reset();
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return delegate.select();
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}
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@Override
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public Selector wakeup() {
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return delegate.wakeup();
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}
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@Override
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public void close() throws IOException {
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delegate.close();
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}
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}
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