e8efcd82a8
Motivation: We can just use Objects.requireNonNull(...) as a replacement for ObjectUtil.checkNotNull(....) Modifications: - Use Objects.requireNonNull(...) Result: Less code to maintain.
81 lines
2.8 KiB
Java
81 lines
2.8 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.unix;
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import static java.util.Objects.requireNonNull;
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import io.netty.buffer.ByteBufAllocator;
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import java.nio.channels.WritableByteChannel;
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public abstract class SocketWritableByteChannel implements WritableByteChannel {
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private final FileDescriptor fd;
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protected SocketWritableByteChannel(FileDescriptor fd) {
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this.fd = requireNonNull(fd, "fd");
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}
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@Override
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public final int write(java.nio.ByteBuffer src) throws java.io.IOException {
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final int written;
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int position = src.position();
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int limit = src.limit();
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if (src.isDirect()) {
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written = fd.write(src, position, src.limit());
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} else {
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final int readableBytes = limit - position;
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io.netty.buffer.ByteBuf buffer = null;
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try {
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if (readableBytes == 0) {
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buffer = io.netty.buffer.Unpooled.EMPTY_BUFFER;
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} else {
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final ByteBufAllocator alloc = alloc();
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if (alloc.isDirectBufferPooled()) {
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buffer = alloc.directBuffer(readableBytes);
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} else {
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buffer = io.netty.buffer.ByteBufUtil.threadLocalDirectBuffer();
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if (buffer == null) {
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buffer = io.netty.buffer.Unpooled.directBuffer(readableBytes);
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}
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}
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}
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buffer.writeBytes(src.duplicate());
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java.nio.ByteBuffer nioBuffer = buffer.internalNioBuffer(buffer.readerIndex(), readableBytes);
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written = fd.write(nioBuffer, nioBuffer.position(), nioBuffer.limit());
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} finally {
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if (buffer != null) {
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buffer.release();
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}
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}
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}
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if (written > 0) {
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src.position(position + written);
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}
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return written;
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}
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@Override
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public final boolean isOpen() {
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return fd.isOpen();
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}
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@Override
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public final void close() throws java.io.IOException {
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fd.close();
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}
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protected abstract ByteBufAllocator alloc();
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}
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