Mercurial > jdk8-mips64-public > jaxws / annotate
src/share/jaxws_classes/com/sun/xml/internal/rngom/binary/PatternInterner.java@b0610cd08440 (annotated)
src/share/jaxws_classes/com/sun/xml/internal/rngom/binary/PatternInterner.java
Fri, 04 Oct 2013 16:21:34 +0100
- author
- mkos
- date
- Fri, 04 Oct 2013 16:21:34 +0100
- changeset 408
- b0610cd08440
- parent 0
- 373ffda63c9a
- permissions
- -rw-r--r--
8025054: Update JAX-WS RI integration to 2.2.9-b130926.1035
Reviewed-by: chegar
| aoqi@0 | 1 | /* |
| aoqi@0 | 2 | * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. |
| aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| aoqi@0 | 4 | * |
| aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
| aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| aoqi@0 | 7 | * published by the Free Software Foundation. Oracle designates this |
| aoqi@0 | 8 | * particular file as subject to the "Classpath" exception as provided |
| aoqi@0 | 9 | * by Oracle in the LICENSE file that accompanied this code. |
| aoqi@0 | 10 | * |
| aoqi@0 | 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| aoqi@0 | 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| aoqi@0 | 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| aoqi@0 | 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| aoqi@0 | 15 | * accompanied this code). |
| aoqi@0 | 16 | * |
| aoqi@0 | 17 | * You should have received a copy of the GNU General Public License version |
| aoqi@0 | 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| aoqi@0 | 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| aoqi@0 | 20 | * |
| aoqi@0 | 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| aoqi@0 | 22 | * or visit www.oracle.com if you need additional information or have any |
| aoqi@0 | 23 | * questions. |
| aoqi@0 | 24 | */ |
| aoqi@0 | 25 | /* |
| aoqi@0 | 26 | * Copyright (C) 2004-2011 |
| aoqi@0 | 27 | * |
| aoqi@0 | 28 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| aoqi@0 | 29 | * of this software and associated documentation files (the "Software"), to deal |
| aoqi@0 | 30 | * in the Software without restriction, including without limitation the rights |
| aoqi@0 | 31 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| aoqi@0 | 32 | * copies of the Software, and to permit persons to whom the Software is |
| aoqi@0 | 33 | * furnished to do so, subject to the following conditions: |
| aoqi@0 | 34 | * |
| aoqi@0 | 35 | * The above copyright notice and this permission notice shall be included in |
| aoqi@0 | 36 | * all copies or substantial portions of the Software. |
| aoqi@0 | 37 | * |
| aoqi@0 | 38 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| aoqi@0 | 39 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| aoqi@0 | 40 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| aoqi@0 | 41 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| aoqi@0 | 42 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| aoqi@0 | 43 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| aoqi@0 | 44 | * THE SOFTWARE. |
| aoqi@0 | 45 | */ |
| aoqi@0 | 46 | package com.sun.xml.internal.rngom.binary; |
| aoqi@0 | 47 | |
| aoqi@0 | 48 | final class PatternInterner { |
| aoqi@0 | 49 | private static final int INIT_SIZE = 256; |
| aoqi@0 | 50 | private static final float LOAD_FACTOR = 0.3f; |
| aoqi@0 | 51 | private Pattern[] table; |
| aoqi@0 | 52 | private int used; |
| aoqi@0 | 53 | private int usedLimit; |
| aoqi@0 | 54 | |
| aoqi@0 | 55 | PatternInterner() { |
| aoqi@0 | 56 | table = null; |
| aoqi@0 | 57 | used = 0; |
| aoqi@0 | 58 | usedLimit = 0; |
| aoqi@0 | 59 | } |
| aoqi@0 | 60 | |
| aoqi@0 | 61 | PatternInterner(PatternInterner parent) { |
| aoqi@0 | 62 | table = parent.table; |
| aoqi@0 | 63 | if (table != null) |
| aoqi@0 | 64 | table = (Pattern[]) table.clone(); |
| aoqi@0 | 65 | used = parent.used; |
| aoqi@0 | 66 | usedLimit = parent.usedLimit; |
| aoqi@0 | 67 | } |
| aoqi@0 | 68 | |
| aoqi@0 | 69 | @SuppressWarnings("empty-statement") |
| aoqi@0 | 70 | Pattern intern(Pattern p) { |
| aoqi@0 | 71 | int h; |
| aoqi@0 | 72 | |
| aoqi@0 | 73 | if (table == null) { |
| aoqi@0 | 74 | table = new Pattern[INIT_SIZE]; |
| aoqi@0 | 75 | usedLimit = (int) (INIT_SIZE * LOAD_FACTOR); |
| aoqi@0 | 76 | h = firstIndex(p); |
| aoqi@0 | 77 | } else { |
| aoqi@0 | 78 | for (h = firstIndex(p); table[h] != null; h = nextIndex(h)) { |
| aoqi@0 | 79 | if (p.samePattern(table[h])) |
| aoqi@0 | 80 | return table[h]; |
| aoqi@0 | 81 | } |
| aoqi@0 | 82 | } |
| aoqi@0 | 83 | if (used >= usedLimit) { |
| aoqi@0 | 84 | // rehash |
| aoqi@0 | 85 | Pattern[] oldTable = table; |
| aoqi@0 | 86 | table = new Pattern[table.length << 1]; |
| aoqi@0 | 87 | for (int i = oldTable.length; i > 0;) { |
| aoqi@0 | 88 | --i; |
| aoqi@0 | 89 | if (oldTable[i] != null) { |
| aoqi@0 | 90 | int j; |
| aoqi@0 | 91 | for (j = firstIndex(oldTable[i]); |
| aoqi@0 | 92 | table[j] != null; |
| aoqi@0 | 93 | j = nextIndex(j)); |
| aoqi@0 | 94 | table[j] = oldTable[i]; |
| aoqi@0 | 95 | } |
| aoqi@0 | 96 | } |
| aoqi@0 | 97 | for (h = firstIndex(p); table[h] != null; h = nextIndex(h)); |
| aoqi@0 | 98 | usedLimit = (int) (table.length * LOAD_FACTOR); |
| aoqi@0 | 99 | } |
| aoqi@0 | 100 | used++; |
| aoqi@0 | 101 | table[h] = p; |
| aoqi@0 | 102 | return p; |
| aoqi@0 | 103 | } |
| aoqi@0 | 104 | |
| aoqi@0 | 105 | private int firstIndex(Pattern p) { |
| aoqi@0 | 106 | return p.patternHashCode() & (table.length - 1); |
| aoqi@0 | 107 | } |
| aoqi@0 | 108 | |
| aoqi@0 | 109 | private int nextIndex(int i) { |
| aoqi@0 | 110 | return i == 0 ? table.length - 1 : i - 1; |
| aoqi@0 | 111 | } |
| aoqi@0 | 112 | } |
