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annotate src/share/vm/graal/graalEnv.hpp @ 5318:b5cd7bc05695

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Method entry counters: Enable the flag to collect an execution profile of compiled methods and their callers. This allows to, e.g., detect methods that should be inlined because they are called frequently.
author Christian Wimmer <Christian.Wimmer@Oracle.com>
date Fri, 27 Apr 2012 12:56:39 -0700
parents 50a1d38cd7ac
children 120820e30baa
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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 // Look up a klass by name from a particular class loader (the accessor's).
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50 // If require_local, result must be defined in that class loader, or NULL.
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51 // If !require_local, a result from remote class loader may be reported,
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52 // if sufficient class loader constraints exist such that initiating
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53 // a class loading request from the given loader is bound to return
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54 // the class defined in the remote loader (or throw an error).
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55 //
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56 // Return an unloaded klass if !require_local and no class at all is found.
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57 //
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58 // The CI treats a klass as loaded if it is consistently defined in
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59 // another loader, even if it hasn't yet been loaded in all loaders
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60 // that could potentially see it via delegation.
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61 static KlassHandle get_klass_by_name(KlassHandle& accessing_klass,
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62 Symbol* klass_name,
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63 bool require_local);
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64
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65 // Constant pool access.
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66 static KlassHandle get_klass_by_index(constantPoolHandle& cpool,
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67 int klass_index,
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68 bool& is_accessible,
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69 KlassHandle& loading_klass);
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70 static void get_field_by_index(instanceKlassHandle& loading_klass, fieldDescriptor& fd,
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71 int field_index);
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72 static methodHandle get_method_by_index(constantPoolHandle& cpool,
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73 int method_index, Bytecodes::Code bc,
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74 instanceKlassHandle& loading_klass);
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75
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76 private:
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77
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78 // Implementation methods for loading and constant pool access.
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79 static KlassHandle get_klass_by_name_impl(KlassHandle& accessing_klass,
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80 constantPoolHandle& cpool,
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81 Symbol* klass_name,
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82 bool require_local);
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83 static KlassHandle get_klass_by_index_impl(constantPoolHandle& cpool,
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84 int klass_index,
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85 bool& is_accessible,
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86 KlassHandle& loading_klass);
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87 static void get_field_by_index_impl(instanceKlassHandle& loading_klass, fieldDescriptor& fd,
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88 int field_index);
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89 static methodHandle get_method_by_index_impl(constantPoolHandle& cpool,
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90 int method_index, Bytecodes::Code bc,
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91 instanceKlassHandle& loading_klass);
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92
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93 // Helper methods
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94 static bool check_klass_accessibility(KlassHandle accessing_klass, KlassHandle resolved_klassOop);
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95 static methodHandle lookup_method(instanceKlassHandle& accessor,
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96 instanceKlassHandle& holder,
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97 Symbol* name,
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98 Symbol* sig,
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99 Bytecodes::Code bc);
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100
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101 private:
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102
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103 // Is this thread currently in the VM state?
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104 static bool is_in_vm();
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105
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106 // Helper routine for determining the validity of a compilation
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107 // with respect to concurrent class loading.
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108 static bool check_for_system_dictionary_modification(Dependencies* target);
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109
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110 public:
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111 // Register the result of a compilation.
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112 static nmethod* register_method(methodHandle& target,
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113 int entry_bci,
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114 CodeOffsets* offsets,
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115 int orig_pc_offset,
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116 CodeBuffer* code_buffer,
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117 int frame_words,
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118 OopMapSet* oop_map_set,
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119 ExceptionHandlerTable* handler_table,
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120 ImplicitExceptionTable* inc_table,
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121 AbstractCompiler* compiler,
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122 DebugInformationRecorder* debug_info,
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123 Dependencies* dependencies,
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124 CompileTask* task,
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125 int compile_id,
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126 bool has_debug_info = true,
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127 bool has_unsafe_access = false,
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128 bool install_code = true);
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129
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130 static ciKlass* find_system_klass(ciSymbol* klass_name);
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131 // Note: To find a class from its name string, use ciSymbol::make,
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132 // but consider adding to vmSymbols.hpp instead.
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133
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134 // converts the ciKlass* representing the holder of a method into a
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135 // ciInstanceKlass*. This is needed since the holder of a method in
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136 // the bytecodes could be an array type. Basically this converts
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137 // array types into java/lang/Object and other types stay as they are.
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138 static instanceKlassHandle get_instance_klass_for_declared_method_holder(KlassHandle& klass);
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139 };
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140
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141 #endif // SHARE_VM_GRAAL_GRAALENV_HPP
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142