src/java.base/unix/classes/sun/nio/ch/SocketDispatcher.java
author michaelm
Tue, 29 Oct 2019 19:55:34 +0000
branchunixdomainchannels
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/*
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 * Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.  Oracle designates this
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 * particular file as subject to the "Classpath" exception as provided
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 * by Oracle in the LICENSE file that accompanied this code.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 */
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package sun.nio.ch;
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import java.io.FileDescriptor;
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import java.io.IOException;
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/**
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 * Allows different platforms to call different native methods
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 * for read and write operations.
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 */
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class SocketDispatcher extends NativeDispatcher {
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    SocketDispatcher() { }
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    /**
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     * Reads up to len bytes from a socket with special handling for "connection
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     * reset".
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     *
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     * @throws sun.net.ConnectionResetException if connection reset is detected
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     * @throws IOException if another I/O error occurs
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     */
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    int read(FileDescriptor fd, long address, int len) throws IOException {
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        return read0(fd, address, len);
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    }
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    /**
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     * Scattering read from a socket into len buffers with special handling for
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     * "connection reset".
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     *
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     * @throws sun.net.ConnectionResetException if connection reset is detected
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     * @throws IOException if another I/O error occurs
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     */
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    long readv(FileDescriptor fd, long address, int len) throws IOException {
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        return readv0(fd, address, len);
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    }
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    int write(FileDescriptor fd, long address, int len) throws IOException {
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        return FileDispatcherImpl.write0(fd, address, len);
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    }
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    long writev(FileDescriptor fd, long address, int len) throws IOException {
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        return FileDispatcherImpl.writev0(fd, address, len);
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    }
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    void close(FileDescriptor fd) throws IOException {
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        FileDispatcherImpl.close0(fd);
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    }
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    void preClose(FileDescriptor fd) throws IOException {
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        FileDispatcherImpl.preClose0(fd);
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    }
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    // -- Native methods --
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    private static native int read0(FileDescriptor fd, long address, int len)
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        throws IOException;
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    private static native long readv0(FileDescriptor fd, long address, int len)
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        throws IOException;
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    static {
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        IOUtil.load();
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    }
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}