3a9f472161
Related: #4333 #4421 #5128 Motivation: slice(), duplicate() and readSlice() currently create a non-recyclable derived buffer instance. Under heavy load, an application that creates a lot of derived buffers can put the garbage collector under pressure. Modifications: - Add the following methods which creates a non-recyclable derived buffer - retainedSlice() - retainedDuplicate() - readRetainedSlice() - Add the new recyclable derived buffer implementations, which has its own reference count value - Add ByteBufHolder.retainedDuplicate() - Add ByteBufHolder.replace(ByteBuf) so that.. - a user can replace the content of the holder in a consistent way - copy/duplicate/retainedDuplicate() can delegate the holder construction to replace(ByteBuf) - Use retainedDuplicate() and retainedSlice() wherever possible - Miscellaneous: - Rename DuplicateByteBufTest to DuplicatedByteBufTest (missing 'D') - Make ReplayingDecoderByteBuf.reject() return an exception instead of throwing it so that its callers don't need to add dummy return statement Result: Derived buffers are now recycled when created via retainedSlice() and retainedDuplicate() and derived from a pooled buffer
187 lines
5.4 KiB
Java
187 lines
5.4 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.handler.codec.http;
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import io.netty.buffer.ByteBuf;
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import io.netty.buffer.Unpooled;
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import io.netty.util.IllegalReferenceCountException;
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import static io.netty.util.internal.ObjectUtil.checkNotNull;
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/**
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* Default implementation of {@link FullHttpRequest}.
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*/
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public class DefaultFullHttpRequest extends DefaultHttpRequest implements FullHttpRequest {
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private final ByteBuf content;
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private final HttpHeaders trailingHeader;
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/**
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* Used to cache the value of the hash code and avoid {@link IllegalReferenceCountException}.
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*/
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private int hash;
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public DefaultFullHttpRequest(HttpVersion httpVersion, HttpMethod method, String uri) {
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this(httpVersion, method, uri, Unpooled.buffer(0));
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}
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public DefaultFullHttpRequest(HttpVersion httpVersion, HttpMethod method, String uri, ByteBuf content) {
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this(httpVersion, method, uri, content, true);
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}
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public DefaultFullHttpRequest(HttpVersion httpVersion, HttpMethod method, String uri, boolean validateHeaders) {
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this(httpVersion, method, uri, Unpooled.buffer(0), validateHeaders);
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}
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public DefaultFullHttpRequest(HttpVersion httpVersion, HttpMethod method, String uri,
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ByteBuf content, boolean validateHeaders) {
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super(httpVersion, method, uri, validateHeaders);
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this.content = checkNotNull(content, "content");
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trailingHeader = new DefaultHttpHeaders(validateHeaders);
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}
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public DefaultFullHttpRequest(HttpVersion httpVersion, HttpMethod method, String uri,
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ByteBuf content, HttpHeaders headers, HttpHeaders trailingHeader) {
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super(httpVersion, method, uri, headers);
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this.content = checkNotNull(content, "content");
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this.trailingHeader = checkNotNull(trailingHeader, "trailingHeader");
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}
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@Override
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public HttpHeaders trailingHeaders() {
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return trailingHeader;
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}
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@Override
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public ByteBuf content() {
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return content;
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}
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@Override
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public int refCnt() {
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return content.refCnt();
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}
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@Override
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public FullHttpRequest retain() {
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content.retain();
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return this;
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}
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@Override
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public FullHttpRequest retain(int increment) {
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content.retain(increment);
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return this;
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}
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@Override
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public FullHttpRequest touch() {
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content.touch();
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return this;
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}
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@Override
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public FullHttpRequest touch(Object hint) {
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content.touch(hint);
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return this;
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}
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@Override
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public boolean release() {
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return content.release();
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}
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@Override
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public boolean release(int decrement) {
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return content.release(decrement);
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}
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@Override
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public FullHttpRequest setProtocolVersion(HttpVersion version) {
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super.setProtocolVersion(version);
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return this;
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}
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@Override
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public FullHttpRequest setMethod(HttpMethod method) {
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super.setMethod(method);
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return this;
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}
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@Override
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public FullHttpRequest setUri(String uri) {
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super.setUri(uri);
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return this;
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}
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@Override
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public FullHttpRequest copy() {
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return replace(content().copy());
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}
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@Override
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public FullHttpRequest duplicate() {
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return replace(content().duplicate());
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}
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@Override
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public FullHttpRequest retainedDuplicate() {
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return replace(content().retainedDuplicate());
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}
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@Override
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public FullHttpRequest replace(ByteBuf content) {
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return new DefaultFullHttpRequest(protocolVersion(), method(), uri(), content, headers(), trailingHeaders());
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}
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@Override
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public int hashCode() {
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int hash = this.hash;
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if (hash == 0) {
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if (content().refCnt() != 0) {
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try {
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hash = 31 + content().hashCode();
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} catch (IllegalReferenceCountException ignored) {
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// Handle race condition between checking refCnt() == 0 and using the object.
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hash = 31;
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}
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} else {
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hash = 31;
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}
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hash = 31 * hash + trailingHeaders().hashCode();
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hash = 31 * hash + super.hashCode();
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this.hash = hash;
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}
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return hash;
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}
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@Override
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public boolean equals(Object o) {
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if (!(o instanceof DefaultFullHttpRequest)) {
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return false;
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}
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DefaultFullHttpRequest other = (DefaultFullHttpRequest) o;
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return super.equals(other) &&
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content().equals(other.content()) &&
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trailingHeaders().equals(other.trailingHeaders());
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}
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@Override
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public String toString() {
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return HttpMessageUtil.appendFullRequest(new StringBuilder(256), this).toString();
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}
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}
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