Mercurial > hg > graal-jvmci-8
annotate src/share/vm/graal/graalVmIds.hpp @ 3632:136ea96eb7f8
Remove the need for VmId (last usage was the constant pool).
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Mon, 14 Nov 2011 22:33:15 +0100 |
parents | f00918f35c7f |
children | 076542d505cd |
rev | line source |
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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 |
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24 #include "memory/allocation.hpp" |
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25 #include "utilities/growableArray.hpp" |
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26 #include "oops/oop.hpp" |
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27 #include "runtime/handles.hpp" |
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28 #include "runtime/thread.hpp" |
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29 #include "classfile/javaClasses.hpp" |
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30 #include "runtime/jniHandles.hpp" |
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31 |
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32 class VmIds : public AllStatic { |
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33 |
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34 private: |
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35 static GrowableArray<address>* _stubs; |
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36 |
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37 static oop getObject(jlong id); |
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38 |
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39 public: |
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40 // these constants needs to have the same values as the one in HotSpotProxy.java |
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41 static const jlong STUB = 0x100000000000000LL; // address |
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42 static const jlong METHOD = 0x200000000000000LL; // methodOop |
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43 static const jlong CLASS = 0x300000000000000LL; // klassOop |
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44 static const jlong CONSTANT_POOL = 0x500000000000000LL; // constantPoolOop |
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45 static const jlong CONSTANT = 0x600000000000000LL; // oop |
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46 static const jlong TYPE_MASK = 0xf00000000000000LL; |
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47 static const jlong DUMMY_CONSTANT = 0x6ffffffffffffffLL; |
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48 |
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49 // Initializes the VmIds for a compilation, by creating the arrays |
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50 static void initializeObjects(); |
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51 |
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52 // Adds a stub address, and returns the corresponding vmId (which is of type STUB) |
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53 static jlong addStub(address stub); |
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54 |
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55 // Returns the stub address with the given vmId |
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56 static address getStub(jlong id); |
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57 |
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58 // Returns the stub address with the given vmId taken from a java.lang.Long |
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59 static address getStub(oop id); |
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60 |
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61 // Helper function to convert a symbol to a java.lang.String object |
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62 template <typename T> static T toString(Symbol* symbol, TRAPS); |
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63 |
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64 // Helper function to convert a java.lang.String object to a symbol (this will return NULL if the symbol doesn't exist in the system) |
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65 static Symbol* toSymbol(jstring string); |
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66 |
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67 // Helper function to get the contents of a java.lang.Long |
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68 static jlong getBoxedLong(oop obj); |
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69 }; |
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70 |
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71 inline address VmIds::getStub(oop obj) { |
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72 return getStub(getBoxedLong(obj)); |
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73 } |
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74 |
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75 template <> inline Handle VmIds::toString<Handle>(Symbol* symbol, TRAPS) { |
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76 return java_lang_String::create_from_symbol(symbol, THREAD); |
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77 } |
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78 |
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79 template <> inline oop VmIds::toString<oop>(Symbol* symbol, TRAPS) { |
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80 return toString<Handle>(symbol, THREAD)(); |
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81 } |
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82 |
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83 template <> inline jstring VmIds::toString<jstring>(Symbol* symbol, TRAPS) { |
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84 return (jstring)JNIHandles::make_local(toString<oop>(symbol, THREAD)); |
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85 } |
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86 |
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87 template <> inline jobject VmIds::toString<jobject>(Symbol* symbol, TRAPS) { |
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88 return JNIHandles::make_local(toString<oop>(symbol, THREAD)); |
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89 } |
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90 |
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91 inline Symbol* VmIds::toSymbol(jstring string) { |
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92 return java_lang_String::as_symbol_or_null(JNIHandles::resolve(string)); |
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93 } |
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94 |
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95 inline jlong VmIds::getBoxedLong(oop obj) { |
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96 assert(obj->is_oop(true), "cannot unbox null or non-oop"); |
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97 return obj->long_field(java_lang_boxing_object::value_offset_in_bytes(T_LONG)); |
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98 } |