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annotate graal/com.oracle.graal.api.runtime/src/com/oracle/graal/api/runtime/Graal.java @ 21527:07b088d61d5d

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added HotSpotJVMCIRuntime* classes, replaced references to HotSpotGraalRuntime in VM with HotSpotJVMCIRuntime (JBS:GRAAL-53)
author Doug Simon <doug.simon@oracle.com>
date Fri, 22 May 2015 23:26:20 +0200
parents 9ca36e4e3137
children e37d1fe9f332
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8d7d009a54d8 Introduction of com.oracle.graal.api project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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1 /*
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2 * Copyright (c) 2012, 2015, 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
8d7d009a54d8 Introduction of com.oracle.graal.api project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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6 * under the terms of the GNU General Public License version 2 only, as
8d7d009a54d8 Introduction of com.oracle.graal.api project.
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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
8d7d009a54d8 Introduction of com.oracle.graal.api project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
8d7d009a54d8 Introduction of com.oracle.graal.api project.
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
8d7d009a54d8 Introduction of com.oracle.graal.api project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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12 * version 2 for more details (a copy is included in the LICENSE file that
8d7d009a54d8 Introduction of com.oracle.graal.api project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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13 * accompanied this code).
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14 *
8d7d009a54d8 Introduction of com.oracle.graal.api project.
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15 * You should have received a copy of the GNU General Public License version
8d7d009a54d8 Introduction of com.oracle.graal.api project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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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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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
8d7d009a54d8 Introduction of com.oracle.graal.api project.
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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 package com.oracle.graal.api.runtime;
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24
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25 import java.util.*;
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26
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27 import sun.reflect.*;
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28
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29 /**
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30 * Access point for {@linkplain #getRuntime() retrieving} the single {@link GraalRuntime} instance.
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31 */
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32 public class Graal {
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33
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34 private static final GraalRuntime runtime = initializeRuntime();
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35
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36 private static GraalRuntime initializeRuntime() {
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37 for (GraalRuntimeFactory factory : Services.load(GraalRuntimeFactory.class)) {
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38 return factory.getRuntime();
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39 }
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40 return new InvalidGraalRuntime();
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41 }
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42
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43 /**
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44 * Gets the singleton {@link GraalRuntime} instance available to the application.
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45 */
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46 public static GraalRuntime getRuntime() {
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47 return runtime;
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48 }
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49
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50 /**
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51 * Gets a capability provided by the {@link GraalRuntime} instance available to the application.
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52 *
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53 * @throws UnsupportedOperationException if the capability is not available
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54 */
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55 @CallerSensitive
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56 public static <T> T getRequiredCapability(Class<T> clazz) {
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57 T t = getRuntime().getCapability(clazz);
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58 if (t == null) {
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59 String javaHome = System.getProperty("java.home");
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60 String vmName = System.getProperty("java.vm.name");
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61 Formatter errorMessage = new Formatter();
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62 if (runtime.getClass() == InvalidGraalRuntime.class) {
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63 errorMessage.format("The VM does not support the Graal API.%n");
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64 } else {
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65 errorMessage.format("The VM does not expose required Graal capability %s.%n", clazz.getName());
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66 }
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67 errorMessage.format("Currently used Java home directory is %s.%n", javaHome);
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68 errorMessage.format("Currently used VM configuration is: %s", vmName);
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69 throw new UnsupportedOperationException(errorMessage.toString());
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70 }
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71 return t;
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72 }
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73
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74 private static final class InvalidGraalRuntime implements GraalRuntime {
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75
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76 @Override
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77 public String getName() {
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78 return "";
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79 }
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80
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81 @Override
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82 public <T> T getCapability(Class<T> clazz) {
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83 return null;
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84 }
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85 }
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86 }