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annotate truffle/com.oracle.truffle.api/src/com/oracle/truffle/api/vm/LanguageCache.java @ 22117:fab555eab36e

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Returning back the LanguageCache concept just making sure it has static final boolean field that eliminates the reflection part when ahead of time compilation is on.
author Jaroslav Tulach <jaroslav.tulach@oracle.com>
date Sat, 29 Aug 2015 01:34:41 +0200
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22117
fab555eab36e Returning back the LanguageCache concept just making sure it has static final boolean field that eliminates the reflection part when ahead of time compilation is on.
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1 /*
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2 * Copyright (c) 2014, 2015, Oracle and/or its affiliates. All rights reserved.
fab555eab36e Returning back the LanguageCache concept just making sure it has static final boolean field that eliminates the reflection part when ahead of time compilation is on.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
fab555eab36e Returning back the LanguageCache concept just making sure it has static final boolean field that eliminates the reflection part when ahead of time compilation is on.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
fab555eab36e Returning back the LanguageCache concept just making sure it has static final boolean field that eliminates the reflection part when ahead of time compilation is on.
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6 * under the terms of the GNU General Public License version 2 only, as
fab555eab36e Returning back the LanguageCache concept just making sure it has static final boolean field that eliminates the reflection part when ahead of time compilation is on.
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7 * published by the Free Software Foundation. Oracle designates this
fab555eab36e Returning back the LanguageCache concept just making sure it has static final boolean field that eliminates the reflection part when ahead of time compilation is on.
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8 * particular file as subject to the "Classpath" exception as provided
fab555eab36e Returning back the LanguageCache concept just making sure it has static final boolean field that eliminates the reflection part when ahead of time compilation is on.
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9 * by Oracle in the LICENSE file that accompanied this code.
fab555eab36e Returning back the LanguageCache concept just making sure it has static final boolean field that eliminates the reflection part when ahead of time compilation is on.
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10 *
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11 * This code is distributed in the hope that it will be useful, but WITHOUT
fab555eab36e Returning back the LanguageCache concept just making sure it has static final boolean field that eliminates the reflection part when ahead of time compilation is on.
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
fab555eab36e Returning back the LanguageCache concept just making sure it has static final boolean field that eliminates the reflection part when ahead of time compilation is on.
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
fab555eab36e Returning back the LanguageCache concept just making sure it has static final boolean field that eliminates the reflection part when ahead of time compilation is on.
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14 * version 2 for more details (a copy is included in the LICENSE file that
fab555eab36e Returning back the LanguageCache concept just making sure it has static final boolean field that eliminates the reflection part when ahead of time compilation is on.
Jaroslav Tulach <jaroslav.tulach@oracle.com>
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15 * accompanied this code).
fab555eab36e Returning back the LanguageCache concept just making sure it has static final boolean field that eliminates the reflection part when ahead of time compilation is on.
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16 *
fab555eab36e Returning back the LanguageCache concept just making sure it has static final boolean field that eliminates the reflection part when ahead of time compilation is on.
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17 * You should have received a copy of the GNU General Public License version
fab555eab36e Returning back the LanguageCache concept just making sure it has static final boolean field that eliminates the reflection part when ahead of time compilation is on.
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18 * 2 along with this work; if not, write to the Free Software Foundation,
fab555eab36e Returning back the LanguageCache concept just making sure it has static final boolean field that eliminates the reflection part when ahead of time compilation is on.
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
fab555eab36e Returning back the LanguageCache concept just making sure it has static final boolean field that eliminates the reflection part when ahead of time compilation is on.
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20 *
fab555eab36e Returning back the LanguageCache concept just making sure it has static final boolean field that eliminates the reflection part when ahead of time compilation is on.
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
fab555eab36e Returning back the LanguageCache concept just making sure it has static final boolean field that eliminates the reflection part when ahead of time compilation is on.
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22 * or visit www.oracle.com if you need additional information or have any
fab555eab36e Returning back the LanguageCache concept just making sure it has static final boolean field that eliminates the reflection part when ahead of time compilation is on.
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23 * questions.
fab555eab36e Returning back the LanguageCache concept just making sure it has static final boolean field that eliminates the reflection part when ahead of time compilation is on.
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24 */
fab555eab36e Returning back the LanguageCache concept just making sure it has static final boolean field that eliminates the reflection part when ahead of time compilation is on.
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25 package com.oracle.truffle.api.vm;
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26
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27 import com.oracle.truffle.api.TruffleLanguage;
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28 import com.oracle.truffle.api.vm.TruffleVM.Language;
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29 import java.util.HashMap;
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30 import java.util.Map;
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31
fab555eab36e Returning back the LanguageCache concept just making sure it has static final boolean field that eliminates the reflection part when ahead of time compilation is on.
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32 /**
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33 * Ahead-of-time initialization. If the JVM is started with -Dcom.oracle.truffle.aot=true, it
fab555eab36e Returning back the LanguageCache concept just making sure it has static final boolean field that eliminates the reflection part when ahead of time compilation is on.
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34 * populates cache with languages found in application classloader.
fab555eab36e Returning back the LanguageCache concept just making sure it has static final boolean field that eliminates the reflection part when ahead of time compilation is on.
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35 */
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36 final class LanguageCache {
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37 private static final boolean PRELOAD;
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38 private static final Map<String, TruffleLanguage<?>> CACHE;
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39 static {
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40 Map<String, TruffleLanguage<?>> map = null;
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41 if (Boolean.getBoolean("com.oracle.truffle.aot")) { // NOI18N
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42 map = new HashMap<>();
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43 for (Language description : TruffleVM.newVM().build().getLanguages().values()) {
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44 TruffleLanguage<?> language = description.getImpl();
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45 map.put(language.getClass().getName(), language);
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46 }
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47 }
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48 CACHE = map;
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49 PRELOAD = CACHE != null;
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50 }
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51
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52 static TruffleLanguage<?> find(String name, ClassLoader loader) throws NoSuchFieldException, IllegalAccessException, ClassNotFoundException {
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53 if (PRELOAD) {
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54 return CACHE.get(name);
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55 } else {
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56 Class<?> langClazz = Class.forName(name, true, loader);
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57 return (TruffleLanguage<?>) langClazz.getField("INSTANCE").get(null);
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58 }
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59 }
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60 }