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.
52 lines
1.7 KiB
Java
52 lines
1.7 KiB
Java
/*
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* Copyright 2012 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.spdy;
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import io.netty.util.AsciiString;
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/**
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* Provides the constants for the header names and the utility methods
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* used by the {@link SpdyHttpDecoder} and {@link SpdyHttpEncoder}.
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*/
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public final class SpdyHttpHeaders {
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/**
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* SPDY HTTP header names
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*/
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public static final class Names {
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/**
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* {@code "x-spdy-stream-id"}
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*/
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public static final AsciiString STREAM_ID = AsciiString.cached("x-spdy-stream-id");
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/**
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* {@code "x-spdy-associated-to-stream-id"}
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*/
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public static final AsciiString ASSOCIATED_TO_STREAM_ID = AsciiString.cached("x-spdy-associated-to-stream-id");
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/**
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* {@code "x-spdy-priority"}
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*/
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public static final AsciiString PRIORITY = AsciiString.cached("x-spdy-priority");
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/**
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* {@code "x-spdy-scheme"}
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*/
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public static final AsciiString SCHEME = AsciiString.cached("x-spdy-scheme");
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private Names() { }
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}
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private SpdyHttpHeaders() { }
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}
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