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1 /* |
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2 * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 */ |
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23 |
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24 package jdk.jfr.internal.consumer; |
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25 |
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26 import jdk.jfr.internal.Type; |
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27 |
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28 final class ConstantLookup { |
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29 private final Type type; |
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30 private ConstantMap current; |
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31 private ConstantMap previous = ConstantMap.EMPTY; |
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32 |
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33 ConstantLookup(ConstantMap current, Type type) { |
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34 this.current = current; |
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35 this.type = type; |
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36 } |
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37 |
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38 public Type getType() { |
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39 return type; |
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40 } |
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41 |
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42 public ConstantMap getLatestPool() { |
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43 return current; |
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44 } |
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45 |
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46 public void newPool() { |
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47 previous = current; |
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48 current = new ConstantMap(current.factory, current.name); |
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49 } |
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50 |
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51 public Object getPreviousResolved(long key) { |
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52 return previous.getResolved(key); |
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53 } |
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54 |
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55 public Object getCurrentResolved(long key) { |
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56 return current.getResolved(key); |
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57 } |
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58 |
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59 public Object getCurrent(long key) { |
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60 return current.get(key); |
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61 } |
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62 } |