4875a2aad4
Motivation: The `AsciiString#toString` method calculate string value and cache it into field. If an `AsciiString` created from the `String` value, we can avoid rebuilding strings if we cache them immediately when creating `AsciiString`. It would be useful for constants strings, which already stored in the JVMs string table, or in cases where an unavoidable `#toString `method call is assumed. Modifications: - Add new static method `AsciiString#cache(String)` which save string value into cache field. - Apply a "benign" data race in the `#hashCode` and `#toString` methods. Result: Less memory usage in some `AsciiString` use cases.
197 lines
5.6 KiB
Java
197 lines
5.6 KiB
Java
/*
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* Copyright 2014 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.rtsp;
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import io.netty.handler.codec.http.HttpHeaderValues;
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import io.netty.util.AsciiString;
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/**
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* Standard RTSP header names.
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*/
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public final class RtspHeaderValues {
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/**
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* {@code "append"}
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*/
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public static final AsciiString APPEND = AsciiString.cached("append");
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/**
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* {@code "AVP"}
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*/
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public static final AsciiString AVP = AsciiString.cached("AVP");
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/**
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* {@code "bytes"}
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*/
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public static final AsciiString BYTES = HttpHeaderValues.BYTES;
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/**
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* {@code "charset"}
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*/
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public static final AsciiString CHARSET = HttpHeaderValues.CHARSET;
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/**
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* {@code "client_port"}
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*/
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public static final AsciiString CLIENT_PORT = AsciiString.cached("client_port");
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/**
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* {@code "clock"}
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*/
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public static final AsciiString CLOCK = AsciiString.cached("clock");
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/**
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* {@code "close"}
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*/
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public static final AsciiString CLOSE = HttpHeaderValues.CLOSE;
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/**
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* {@code "compress"}
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*/
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public static final AsciiString COMPRESS = HttpHeaderValues.COMPRESS;
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/**
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* {@code "100-continue"}
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*/
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public static final AsciiString CONTINUE = HttpHeaderValues.CONTINUE;
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/**
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* {@code "deflate"}
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*/
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public static final AsciiString DEFLATE = HttpHeaderValues.DEFLATE;
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/**
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* {@code "destination"}
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*/
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public static final AsciiString DESTINATION = AsciiString.cached("destination");
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/**
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* {@code "gzip"}
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*/
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public static final AsciiString GZIP = HttpHeaderValues.GZIP;
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/**
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* {@code "identity"}
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*/
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public static final AsciiString IDENTITY = HttpHeaderValues.IDENTITY;
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/**
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* {@code "interleaved"}
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*/
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public static final AsciiString INTERLEAVED = AsciiString.cached("interleaved");
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/**
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* {@code "keep-alive"}
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*/
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public static final AsciiString KEEP_ALIVE = HttpHeaderValues.KEEP_ALIVE;
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/**
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* {@code "layers"}
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*/
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public static final AsciiString LAYERS = AsciiString.cached("layers");
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/**
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* {@code "max-age"}
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*/
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public static final AsciiString MAX_AGE = HttpHeaderValues.MAX_AGE;
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/**
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* {@code "max-stale"}
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*/
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public static final AsciiString MAX_STALE = HttpHeaderValues.MAX_STALE;
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/**
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* {@code "min-fresh"}
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*/
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public static final AsciiString MIN_FRESH = HttpHeaderValues.MIN_FRESH;
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/**
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* {@code "mode"}
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*/
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public static final AsciiString MODE = AsciiString.cached("mode");
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/**
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* {@code "multicast"}
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*/
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public static final AsciiString MULTICAST = AsciiString.cached("multicast");
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/**
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* {@code "must-revalidate"}
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*/
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public static final AsciiString MUST_REVALIDATE = HttpHeaderValues.MUST_REVALIDATE;
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/**
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* {@code "none"}
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*/
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public static final AsciiString NONE = HttpHeaderValues.NONE;
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/**
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* {@code "no-cache"}
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*/
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public static final AsciiString NO_CACHE = HttpHeaderValues.NO_CACHE;
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/**
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* {@code "no-transform"}
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*/
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public static final AsciiString NO_TRANSFORM = HttpHeaderValues.NO_TRANSFORM;
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/**
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* {@code "only-if-cached"}
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*/
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public static final AsciiString ONLY_IF_CACHED = HttpHeaderValues.ONLY_IF_CACHED;
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/**
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* {@code "port"}
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*/
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public static final AsciiString PORT = AsciiString.cached("port");
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/**
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* {@code "private"}
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*/
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public static final AsciiString PRIVATE = HttpHeaderValues.PRIVATE;
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/**
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* {@code "proxy-revalidate"}
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*/
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public static final AsciiString PROXY_REVALIDATE = HttpHeaderValues.PROXY_REVALIDATE;
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/**
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* {@code "public"}
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*/
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public static final AsciiString PUBLIC = HttpHeaderValues.PUBLIC;
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/**
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* {@code "RTP"}
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*/
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public static final AsciiString RTP = AsciiString.cached("RTP");
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/**
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* {@code "rtptime"}
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*/
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public static final AsciiString RTPTIME = AsciiString.cached("rtptime");
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/**
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* {@code "seq"}
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*/
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public static final AsciiString SEQ = AsciiString.cached("seq");
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/**
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* {@code "server_port"}
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*/
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public static final AsciiString SERVER_PORT = AsciiString.cached("server_port");
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/**
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* {@code "ssrc"}
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*/
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public static final AsciiString SSRC = AsciiString.cached("ssrc");
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/**
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* {@code "TCP"}
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*/
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public static final AsciiString TCP = AsciiString.cached("TCP");
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/**
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* {@code "time"}
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*/
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public static final AsciiString TIME = AsciiString.cached("time");
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/**
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* {@code "timeout"}
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*/
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public static final AsciiString TIMEOUT = AsciiString.cached("timeout");
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/**
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* {@code "ttl"}
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*/
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public static final AsciiString TTL = AsciiString.cached("ttl");
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/**
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* {@code "UDP"}
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*/
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public static final AsciiString UDP = AsciiString.cached("UDP");
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/**
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* {@code "unicast"}
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*/
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public static final AsciiString UNICAST = AsciiString.cached("unicast");
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/**
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* {@code "url"}
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*/
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public static final AsciiString URL = AsciiString.cached("url");
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private RtspHeaderValues() { }
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}
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