1d7c3fb7ee
Motivation: The EPOLL transport uses EPOLLRDHUP to detect when the peer closes the write side of the socket. Currently KQueue is not able to mimic this behavior and the only way to detect if the peer has closed is to read. It may not always be appropriate to read for backpressure and other reasons at the application level. Modifications: - Support EVFILT_SOCK filter which provides notification when the peer closes the socket Result: KQueue transport has more consistent behavior with Epoll transport for detecting peer closure.
50 lines
1.9 KiB
Java
50 lines
1.9 KiB
Java
/*
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* Copyright 2016 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.kqueue;
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/**
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* This class is necessary to break the following cyclic dependency:
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* <ol>
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* <li>JNI_OnLoad</li>
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* <li>JNI Calls FindClass because RegisterNatives (used to register JNI methods) requires a class</li>
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* <li>FindClass loads the class, but static members variables of that class attempt to call a JNI method which has not
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* yet been registered.</li>
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* <li>java.lang.UnsatisfiedLinkError is thrown because native method has not yet been registered.</li>
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* </ol>
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* Static members which call JNI methods must not be declared in this class!
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*/
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final class KQueueStaticallyReferencedJniMethods {
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private KQueueStaticallyReferencedJniMethods() { }
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static native short evAdd();
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static native short evEnable();
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static native short evDisable();
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static native short evDelete();
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static native short evClear();
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static native short evEOF();
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static native short evError();
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// data/hint fflags for EVFILT_SOCK, shared with userspace.
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static native short noteReadClosed();
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static native short noteConnReset();
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static native short noteDisconnected();
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static native short evfiltRead();
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static native short evfiltWrite();
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static native short evfiltUser();
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static native short evfiltSock();
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}
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