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annotate graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/meta/HotSpotObjectConstant.java @ 18530:2906b3cc3e2f

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moved application of Remote marker interface to implementation classes only
author Doug Simon <doug.simon@oracle.com>
date Wed, 26 Nov 2014 13:20:14 +0100
parents 06756883d87e
children 25a21e1794ec
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db4254246f9a Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
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1 /*
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2 * Copyright (c) 2009, 2014, 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
db4254246f9a Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
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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.hotspot.meta;
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24
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25 import java.lang.invoke.*;
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26
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27 import com.oracle.graal.api.code.*;
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28 import com.oracle.graal.api.meta.*;
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29 import com.oracle.graal.graph.*;
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30 import com.oracle.graal.lir.*;
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31
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32 /**
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33 * Represents a constant non-{@code null} object reference, within the compiler and across the
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34 * compiler/runtime interface.
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35 */
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36 public interface HotSpotObjectConstant extends JavaConstant, HotSpotConstant, VMConstant {
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37
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38 JavaConstant compress();
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39
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40 JavaConstant uncompress();
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41
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42 boolean isCompressed();
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43
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44 /**
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45 * Gets the result of {@link Class#getClassLoader()} for the {@link Class} object represented by
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46 * this constant.
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47 *
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48 * @return {@code null} if this constant does not represent a {@link Class} object
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49 */
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50 JavaConstant getClassLoader();
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51
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52 /**
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53 * Gets the {@linkplain System#identityHashCode(Object) identity} has code for the object
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54 * represented by this constant.
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55 */
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56 int getIdentityHashCode();
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57
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58 /**
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59 * Gets the result of {@link NodeClass#get(Class)} for the {@link Class} object represented by
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60 * this constant.
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61 *
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62 * @return {@code null} if this constant does not represent a {@link Class} object
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63 */
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64 JavaConstant getNodeClass();
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65
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66 /**
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67 * Gets the result of {@link Class#getComponentType()} for the {@link Class} object represented
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68 * by this constant.
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69 *
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70 * @return {@code null} if this constant does not represent a {@link Class} object
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71 */
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72 JavaConstant getComponentType();
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73
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74 /**
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75 * Gets the result of {@link Class#getSuperclass()} for the {@link Class} object represented by
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76 * this constant.
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77 *
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78 * @return {@code null} if this constant does not represent a {@link Class} object
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79 */
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80 JavaConstant getSuperclass();
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81
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82 /**
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83 * Gets the result of {@link CallSite#getTarget()} for the {@link CallSite} object represented
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84 * by this constant.
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85 *
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86 * @param assumptions used to register an assumption that the {@link CallSite}'s target does not
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87 * change
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88 * @return {@code null} if this constant does not represent a {@link CallSite} object
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89 */
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90 JavaConstant getCallSiteTarget(Assumptions assumptions);
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91
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92 /**
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93 * Gets the result of {@link CompositeValueClass#get(Class)} for the {@link Class} object
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94 * represented by this constant.
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95 *
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96 * @return {@code null} if this constant does not represent a {@link Class} object
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97 */
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98 JavaConstant getCompositeValueClass();
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99
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100 /**
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101 * Determines if this constant represents an {@linkplain String#intern() interned} string.
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102 */
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103 boolean isInternedString();
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104 }