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annotate graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/meta/HotSpotNmethod.java @ 10052:5b21ddb3deaa

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readd optional graph to HotSpotNmethod
author Andreas Woess <andreas.woess@jku.at>
date Fri, 14 Jun 2013 17:28:00 +0200
parents 6e4b72bcc97f
children 3489047ffea2
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1 /*
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2 * Copyright (c) 2011, 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 package com.oracle.graal.hotspot.meta;
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24
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25 import static com.oracle.graal.hotspot.HotSpotGraalRuntime.*;
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26
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27 import java.lang.reflect.*;
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28
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29 import com.oracle.graal.api.code.*;
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30 import com.oracle.graal.api.meta.*;
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31 import com.oracle.graal.graph.*;
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32
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33 /**
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34 * Implementation of {@link InstalledCode} for code installed as an nmethod. The nmethod stores a
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35 * weak reference to an instance of this class. This is necessary to keep the nmethod from being
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36 * unloaded while the associated {@link HotSpotNmethod} instance is alive.
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37 * <p>
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38 * Note that there is no (current) way for the reference from an nmethod to a {@link HotSpotNmethod}
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39 * instance to be anything but weak. This is due to the fact that HotSpot does not treat nmethods as
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40 * strong GC roots.
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41 */
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42 public class HotSpotNmethod extends HotSpotInstalledCode {
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43
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44 private static final long serialVersionUID = -1784683588947054103L;
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45
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46 private final HotSpotResolvedJavaMethod method;
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47 private final boolean isDefault;
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48 private final Graph graph;
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49
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50 public HotSpotNmethod(HotSpotResolvedJavaMethod method, boolean isDefault, Graph graph) {
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51 this.method = method;
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52 this.isDefault = isDefault;
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53 this.graph = graph;
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54 }
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55
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56 public boolean isDefault() {
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57 return isDefault;
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58 }
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59
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60 public Graph getGraph() {
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61 return graph;
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62 }
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63
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64 @Override
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65 public ResolvedJavaMethod getMethod() {
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66 return method;
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67 }
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68
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69 @Override
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70 public boolean isValid() {
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71 return graalRuntime().getCompilerToVM().isInstalledCodeValid(codeBlob);
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72 }
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73
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74 @Override
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75 public void invalidate() {
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76 graalRuntime().getCompilerToVM().invalidateInstalledCode(codeBlob);
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77 }
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78
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79 @Override
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80 public String toString() {
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81 return String.format("InstalledNmethod[method=%s, codeBlob=0x%x, isDefault=%b]", method, codeBlob, isDefault);
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82 }
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83
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84 @Override
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85 public Object execute(Object arg1, Object arg2, Object arg3) throws InvalidInstalledCodeException {
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86 assert method.getSignature().getParameterCount(!Modifier.isStatic(method.getModifiers())) == 3;
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87 assert method.getSignature().getParameterKind(0) == Kind.Object;
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88 assert method.getSignature().getParameterKind(1) == Kind.Object;
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89 assert !Modifier.isStatic(method.getModifiers()) || method.getSignature().getParameterKind(2) == Kind.Object;
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90 return graalRuntime().getCompilerToVM().executeCompiledMethod(arg1, arg2, arg3, codeBlob);
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91 }
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92
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93 private boolean checkArgs(Object... args) {
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94 JavaType[] sig = MetaUtil.signatureToTypes(method);
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95 assert args.length == sig.length : MetaUtil.format("%H.%n(%p): expected ", method) + sig.length + " args, got " + args.length;
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96 for (int i = 0; i < sig.length; i++) {
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97 Object arg = args[i];
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98 if (arg == null) {
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99 assert sig[i].getKind() == Kind.Object : MetaUtil.format("%H.%n(%p): expected arg ", method) + i + " to be Object, not " + sig[i];
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100 } else if (sig[i].getKind() != Kind.Object) {
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101 assert sig[i].getKind().toBoxedJavaClass() == arg.getClass() : MetaUtil.format("%H.%n(%p): expected arg ", method) + i + " to be " + sig[i] + ", not " + arg.getClass();
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102 }
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103 }
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104 return true;
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105 }
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106
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107 @Override
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108 public Object executeVarargs(Object... args) throws InvalidInstalledCodeException {
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109 assert checkArgs(args);
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110 return graalRuntime().getCompilerToVM().executeCompiledMethodVarargs(args, codeBlob);
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111 }
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112
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113 @Override
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114 public long getStart() {
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115 return isValid() ? start : 0;
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116 }
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117 }