Mercurial > hg > truffle
annotate src/share/vm/graal/graalEnv.hpp @ 7089:af30115c9d0e
added metering of code installation failure rate to detect excessive failure caused by overly optimistic assumptions
author | Doug Simon <doug.simon@oracle.com> |
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date | Wed, 28 Nov 2012 20:39:43 +0100 |
parents | bf2ea3ed3bce |
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1 /* |
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2 * Copyright (c) 1999, 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 |
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25 #ifndef SHARE_VM_GRAAL_GRAALENV_HPP |
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26 #define SHARE_VM_GRAAL_GRAALENV_HPP |
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27 |
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28 #include "classfile/systemDictionary.hpp" |
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29 #include "code/debugInfoRec.hpp" |
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30 #include "code/dependencies.hpp" |
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31 #include "code/exceptionHandlerTable.hpp" |
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32 #include "compiler/oopMap.hpp" |
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33 #include "runtime/thread.hpp" |
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34 |
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35 class CompileTask; |
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36 |
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37 // ciEnv |
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38 // |
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39 // This class is the top level broker for requests from the compiler |
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40 // to the VM. |
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41 class GraalEnv : AllStatic { |
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42 CI_PACKAGE_ACCESS_TO |
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43 |
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44 friend class CompileBroker; |
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45 friend class Dependencies; // for get_object, during logging |
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46 |
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47 public: |
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48 |
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49 // Must be kept in sync with the enum in the HotSpot implementation of CompilerToVM |
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50 enum CodeInstallResult { |
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51 ok, |
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52 dependencies_failed, |
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53 cache_full |
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54 }; |
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55 |
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56 // Look up a klass by name from a particular class loader (the accessor's). |
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57 // If require_local, result must be defined in that class loader, or NULL. |
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58 // If !require_local, a result from remote class loader may be reported, |
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59 // if sufficient class loader constraints exist such that initiating |
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60 // a class loading request from the given loader is bound to return |
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61 // the class defined in the remote loader (or throw an error). |
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62 // |
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63 // Return an unloaded klass if !require_local and no class at all is found. |
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64 // |
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65 // The CI treats a klass as loaded if it is consistently defined in |
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66 // another loader, even if it hasn't yet been loaded in all loaders |
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67 // that could potentially see it via delegation. |
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68 static KlassHandle get_klass_by_name(KlassHandle& accessing_klass, |
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69 Symbol* klass_name, |
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70 bool require_local); |
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71 |
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72 // Constant pool access. |
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73 static KlassHandle get_klass_by_index(constantPoolHandle& cpool, |
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74 int klass_index, |
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75 bool& is_accessible, |
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76 KlassHandle& loading_klass); |
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77 static void get_field_by_index(instanceKlassHandle& loading_klass, fieldDescriptor& fd, |
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78 int field_index); |
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79 static methodHandle get_method_by_index(constantPoolHandle& cpool, |
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80 int method_index, Bytecodes::Code bc, |
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81 instanceKlassHandle& loading_klass); |
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82 |
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83 private: |
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84 |
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85 // Implementation methods for loading and constant pool access. |
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86 static KlassHandle get_klass_by_name_impl(KlassHandle& accessing_klass, |
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87 constantPoolHandle& cpool, |
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88 Symbol* klass_name, |
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89 bool require_local); |
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90 static KlassHandle get_klass_by_index_impl(constantPoolHandle& cpool, |
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91 int klass_index, |
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92 bool& is_accessible, |
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93 KlassHandle& loading_klass); |
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94 static void get_field_by_index_impl(instanceKlassHandle& loading_klass, fieldDescriptor& fd, |
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95 int field_index); |
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96 static methodHandle get_method_by_index_impl(constantPoolHandle& cpool, |
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97 int method_index, Bytecodes::Code bc, |
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98 instanceKlassHandle& loading_klass); |
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99 |
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100 // Helper methods |
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101 static bool check_klass_accessibility(KlassHandle accessing_klass, KlassHandle resolved_klass); |
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102 static methodHandle lookup_method(instanceKlassHandle& accessor, |
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103 instanceKlassHandle& holder, |
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104 Symbol* name, |
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105 Symbol* sig, |
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106 Bytecodes::Code bc); |
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107 |
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108 private: |
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109 |
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110 // Is this thread currently in the VM state? |
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111 static bool is_in_vm(); |
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112 |
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113 // Helper routine for determining the validity of a compilation |
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114 // with respect to concurrent class loading. |
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115 static bool check_for_system_dictionary_modification(Dependencies* target); |
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116 |
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117 public: |
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118 // Register the result of a compilation. |
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119 static GraalEnv::CodeInstallResult register_method( |
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120 methodHandle& target, |
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121 nmethod*& nm, |
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122 int entry_bci, |
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123 CodeOffsets* offsets, |
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124 int orig_pc_offset, |
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125 CodeBuffer* code_buffer, |
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126 int frame_words, |
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127 OopMapSet* oop_map_set, |
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128 ExceptionHandlerTable* handler_table, |
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129 ImplicitExceptionTable* inc_table, |
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130 AbstractCompiler* compiler, |
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131 DebugInformationRecorder* debug_info, |
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132 Dependencies* dependencies, |
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133 CompileTask* task, |
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134 int compile_id, |
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135 bool has_debug_info, |
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136 bool has_unsafe_access, |
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137 Handle installed_code); |
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138 |
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139 static ciKlass* find_system_klass(ciSymbol* klass_name); |
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140 // Note: To find a class from its name string, use ciSymbol::make, |
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141 // but consider adding to vmSymbols.hpp instead. |
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142 |
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143 // converts the ciKlass* representing the holder of a method into a |
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144 // ciInstanceKlass*. This is needed since the holder of a method in |
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145 // the bytecodes could be an array type. Basically this converts |
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146 // array types into java/lang/Object and other types stay as they are. |
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147 static instanceKlassHandle get_instance_klass_for_declared_method_holder(KlassHandle& klass); |
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148 }; |
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149 |
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150 #endif // SHARE_VM_GRAAL_GRAALENV_HPP |