Mercurial > hg > graal-jvmci-8
annotate jvmci/jdk.vm.ci.code/src/jdk/vm/ci/code/InstalledCode.java @ 24218:719853999215 jvmci-0.32
Merge with jdk8u141-b15
| author | Doug Simon <doug.simon@oracle.com> |
|---|---|
| date | Mon, 14 Aug 2017 23:20:38 +0200 |
| parents | 088d24f0be35 |
| children |
| rev | line source |
|---|---|
| 22054 | 1 /* |
| 2 * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved. | |
| 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
| 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 20 * or visit www.oracle.com if you need additional information or have any | |
| 21 * questions. | |
| 22 */ | |
|
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23 package jdk.vm.ci.code; |
| 22054 | 24 |
| 25 /** | |
| 26 * Represents a compiled instance of a method. It may have been invalidated or removed in the | |
| 27 * meantime. | |
| 28 */ | |
| 29 public class InstalledCode { | |
| 30 | |
| 31 /** | |
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32 * Raw address address of entity representing this installed code. |
| 22054 | 33 */ |
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34 protected long address; |
| 22054 | 35 |
| 36 /** | |
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37 * Raw address of entryPoint of this installed code. |
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38 */ |
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39 protected long entryPoint; |
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40 |
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41 /** |
| 22054 | 42 * Counts how often the address field was reassigned. |
| 43 */ | |
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44 protected long version; |
| 22054 | 45 |
| 46 protected final String name; | |
| 47 | |
| 48 public InstalledCode(String name) { | |
| 49 this.name = name; | |
| 50 } | |
| 51 | |
| 52 /** | |
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53 * @return the address of entity representing this installed code. |
| 22054 | 54 */ |
| 55 public final long getAddress() { | |
| 56 return address; | |
| 57 } | |
| 58 | |
| 59 /** | |
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60 * @return the address of the normal entry point of the installed code. |
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61 */ |
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62 public final long getEntryPoint() { |
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63 return entryPoint; |
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64 } |
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65 |
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66 /** |
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67 * @return the version number of this installed code |
| 22054 | 68 */ |
| 69 public final long getVersion() { | |
| 70 return version; | |
| 71 } | |
| 72 | |
| 73 /** | |
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74 * Returns the name of this installed code. |
| 22054 | 75 */ |
| 76 public String getName() { | |
| 77 return name; | |
| 78 } | |
| 79 | |
| 80 /** | |
| 81 * Returns the start address of this installed code if it is {@linkplain #isValid() valid}, 0 | |
| 82 * otherwise. | |
| 83 */ | |
| 84 public long getStart() { | |
| 85 return 0; | |
| 86 } | |
| 87 | |
| 88 /** | |
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89 * @return true if the code represented by this object is still valid for invocation, false |
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90 * otherwise (may happen due to deopt, etc.) |
| 22054 | 91 */ |
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92 public boolean isValid() { |
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93 return entryPoint != 0; |
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94 } |
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95 |
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96 /** |
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97 * @return true if the code represented by this object still exists and might have live |
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98 * activations, false otherwise (may happen due to deopt, etc.) |
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99 */ |
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100 public boolean isAlive() { |
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101 return address != 0; |
| 22054 | 102 } |
| 103 | |
| 104 /** | |
| 105 * Returns a copy of this installed code if it is {@linkplain #isValid() valid}, null otherwise. | |
| 106 */ | |
| 107 public byte[] getCode() { | |
| 108 return null; | |
| 109 } | |
| 110 | |
| 111 /** | |
|
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112 * Invalidates this installed code such that any subsequent |
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113 * {@linkplain #executeVarargs(Object...) invocation} will throw an |
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114 * {@link InvalidInstalledCodeException} and all existing invocations will be deoptimized. |
| 22054 | 115 */ |
| 116 public void invalidate() { | |
| 117 throw new UnsupportedOperationException(); | |
| 118 } | |
| 119 | |
| 120 /** | |
| 121 * Executes the installed code with a variable number of arguments. | |
| 122 * | |
| 123 * @param args the array of object arguments | |
| 124 * @return the value returned by the executed code | |
| 125 */ | |
| 126 @SuppressWarnings("unused") | |
| 127 public Object executeVarargs(Object... args) throws InvalidInstalledCodeException { | |
| 128 throw new UnsupportedOperationException(); | |
| 129 } | |
| 130 } |