Mercurial > hg > truffle
annotate src/share/vm/interpreter/linkResolver.hpp @ 6725:da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
| author | coleenp |
|---|---|
| date | Sat, 01 Sep 2012 13:25:18 -0400 |
| parents | 1d7922586cf6 |
| children | f6b0eb4e44cf |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
| 0 | 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 * | |
|
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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. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #ifndef SHARE_VM_INTERPRETER_LINKRESOLVER_HPP |
| 26 #define SHARE_VM_INTERPRETER_LINKRESOLVER_HPP | |
| 27 | |
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28 #include "oops/method.hpp" |
| 1972 | 29 #include "utilities/top.hpp" |
| 30 | |
| 0 | 31 // All the necessary definitions for run-time link resolution. |
| 32 | |
| 33 // LinkInfo & its subclasses provide all the information gathered | |
| 34 // for a particular link after resolving it. A link is any reference | |
| 35 // made from within the bytecodes of a method to an object outside of | |
| 36 // that method. If the info is invalid, the link has not been resolved | |
| 37 // successfully. | |
| 38 | |
| 39 class LinkInfo VALUE_OBJ_CLASS_SPEC { | |
| 40 }; | |
| 41 | |
| 42 | |
| 43 // Link information for getfield/putfield & getstatic/putstatic bytecodes. | |
| 44 | |
| 45 class FieldAccessInfo: public LinkInfo { | |
| 46 protected: | |
| 47 KlassHandle _klass; | |
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48 Symbol* _name; |
| 0 | 49 AccessFlags _access_flags; |
| 50 int _field_index; // original index in the klass | |
| 51 int _field_offset; | |
| 52 BasicType _field_type; | |
| 53 | |
| 54 public: | |
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55 void set(KlassHandle klass, Symbol* name, int field_index, int field_offset, |
| 0 | 56 BasicType field_type, AccessFlags access_flags); |
| 57 KlassHandle klass() const { return _klass; } | |
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58 Symbol* name() const { return _name; } |
| 0 | 59 int field_index() const { return _field_index; } |
| 60 int field_offset() const { return _field_offset; } | |
| 61 BasicType field_type() const { return _field_type; } | |
| 62 AccessFlags access_flags() const { return _access_flags; } | |
| 63 | |
| 64 // debugging | |
| 65 void print() PRODUCT_RETURN; | |
| 66 }; | |
| 67 | |
| 68 | |
| 69 // Link information for all calls. | |
| 70 | |
| 71 class CallInfo: public LinkInfo { | |
| 72 private: | |
| 73 KlassHandle _resolved_klass; // static receiver klass | |
| 74 KlassHandle _selected_klass; // dynamic receiver class (same as static, or subklass) | |
| 75 methodHandle _resolved_method; // static target method | |
| 76 methodHandle _selected_method; // dynamic (actual) target method | |
| 77 int _vtable_index; // vtable index of selected method | |
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78 Handle _resolved_appendix; // extra argument in constant pool (if CPCE::has_appendix) |
| 0 | 79 |
| 80 void set_static( KlassHandle resolved_klass, methodHandle resolved_method , TRAPS); | |
| 81 void set_interface(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method , TRAPS); | |
| 82 void set_virtual( KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index, TRAPS); | |
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83 void set_handle( methodHandle resolved_method, Handle resolved_appendix, TRAPS); |
| 0 | 84 void set_common( KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index, TRAPS); |
| 85 | |
| 86 friend class LinkResolver; | |
| 87 | |
| 88 public: | |
| 89 KlassHandle resolved_klass() const { return _resolved_klass; } | |
| 90 KlassHandle selected_klass() const { return _selected_klass; } | |
| 91 methodHandle resolved_method() const { return _resolved_method; } | |
| 92 methodHandle selected_method() const { return _selected_method; } | |
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93 Handle resolved_appendix() const { return _resolved_appendix; } |
| 0 | 94 |
| 95 BasicType result_type() const { return selected_method()->result_type(); } | |
| 96 bool has_vtable_index() const { return _vtable_index >= 0; } | |
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97 bool is_statically_bound() const { return _vtable_index == Method::nonvirtual_vtable_index; } |
| 0 | 98 int vtable_index() const { |
| 99 // Even for interface calls the vtable index could be non-negative. | |
| 100 // See CallInfo::set_interface. | |
| 101 assert(has_vtable_index() || is_statically_bound(), ""); | |
| 102 return _vtable_index; | |
| 103 } | |
| 104 }; | |
| 105 | |
| 106 | |
| 107 // The LinkResolver is used to resolve constant-pool references at run-time. | |
| 108 // It does all necessary link-time checks & throws exceptions if necessary. | |
| 109 | |
| 110 class LinkResolver: AllStatic { | |
| 111 private: | |
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112 static void lookup_method_in_klasses (methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS); |
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113 static void lookup_instance_method_in_klasses (methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS); |
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114 static void lookup_method_in_interfaces (methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS); |
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115 static void lookup_polymorphic_method (methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, |
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116 KlassHandle current_klass, Handle* appendix_result_or_null, TRAPS); |
| 0 | 117 |
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118 static int vtable_index_of_miranda_method(KlassHandle klass, Symbol* name, Symbol* signature, TRAPS); |
| 0 | 119 |
| 120 static void resolve_klass (KlassHandle& result, constantPoolHandle pool, int index, TRAPS); | |
| 121 static void resolve_klass_no_update (KlassHandle& result, constantPoolHandle pool, int index, TRAPS); // no update of constantPool entry | |
| 122 | |
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123 static void resolve_pool (KlassHandle& resolved_klass, Symbol*& method_name, Symbol*& method_signature, KlassHandle& current_klass, constantPoolHandle pool, int index, TRAPS); |
| 0 | 124 |
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125 static void resolve_interface_method(methodHandle& resolved_method, KlassHandle resolved_klass, Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS); |
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126 static void resolve_method (methodHandle& resolved_method, KlassHandle resolved_klass, Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS); |
| 0 | 127 |
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128 static void linktime_resolve_static_method (methodHandle& resolved_method, KlassHandle resolved_klass, Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS); |
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129 static void linktime_resolve_special_method (methodHandle& resolved_method, KlassHandle resolved_klass, Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS); |
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130 static void linktime_resolve_virtual_method (methodHandle &resolved_method, KlassHandle resolved_klass, Symbol* method_name, Symbol* method_signature,KlassHandle current_klass, bool check_access, TRAPS); |
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131 static void linktime_resolve_interface_method (methodHandle& resolved_method, KlassHandle resolved_klass, Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS); |
| 0 | 132 |
| 133 static void runtime_resolve_special_method (CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, KlassHandle current_klass, bool check_access, TRAPS); | |
| 134 static void runtime_resolve_virtual_method (CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, Handle recv, KlassHandle recv_klass, bool check_null_and_abstract, TRAPS); | |
| 135 static void runtime_resolve_interface_method (CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, Handle recv, KlassHandle recv_klass, bool check_null_and_abstract, TRAPS); | |
| 136 | |
| 137 static void check_field_accessability (KlassHandle ref_klass, KlassHandle resolved_klass, KlassHandle sel_klass, fieldDescriptor& fd, TRAPS); | |
| 138 static void check_method_accessability (KlassHandle ref_klass, KlassHandle resolved_klass, KlassHandle sel_klass, methodHandle sel_method, TRAPS); | |
| 139 | |
| 140 public: | |
| 141 // constant pool resolving | |
| 142 static void check_klass_accessability(KlassHandle ref_klass, KlassHandle sel_klass, TRAPS); | |
| 143 | |
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144 // static resolving calls (will not run any Java code); used only from Bytecode_invoke::static_target |
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145 static void resolve_method_statically(methodHandle& method_result, KlassHandle& klass_result, |
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146 Bytecodes::Code code, constantPoolHandle pool, int index, TRAPS); |
| 0 | 147 |
| 148 // runtime/static resolving for fields | |
| 149 static void resolve_field(FieldAccessInfo& result, constantPoolHandle pool, int index, Bytecodes::Code byte, bool check_only, TRAPS); | |
| 150 // takes an extra bool argument "update_pool" to decide whether to update the constantPool during klass resolution. | |
| 151 static void resolve_field(FieldAccessInfo& result, constantPoolHandle pool, int index, Bytecodes::Code byte, bool check_only, bool update_pool, TRAPS); | |
| 152 | |
| 153 // runtime resolving: | |
| 154 // resolved_klass = specified class (i.e., static receiver class) | |
| 155 // current_klass = sending method holder (i.e., class containing the method containing the call being resolved) | |
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156 static void resolve_static_call (CallInfo& result, KlassHandle& resolved_klass, Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, bool check_access, bool initialize_klass, TRAPS); |
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157 static void resolve_special_call (CallInfo& result, KlassHandle resolved_klass, Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS); |
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158 static void resolve_virtual_call (CallInfo& result, Handle recv, KlassHandle recv_klass, KlassHandle resolved_klass, Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, bool check_access, bool check_null_and_abstract, TRAPS); |
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159 static void resolve_interface_call(CallInfo& result, Handle recv, KlassHandle recv_klass, KlassHandle resolved_klass, Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, bool check_access, bool check_null_and_abstract, TRAPS); |
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160 static void resolve_handle_call (CallInfo& result, KlassHandle resolved_klass, Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, TRAPS); |
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161 static void resolve_dynamic_call (CallInfo& result, Handle bootstrap_specifier, Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, TRAPS); |
| 0 | 162 |
| 163 // same as above for compile-time resolution; but returns null handle instead of throwing an exception on error | |
| 164 // also, does not initialize klass (i.e., no side effects) | |
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165 static methodHandle resolve_virtual_call_or_null (KlassHandle receiver_klass, KlassHandle resolved_klass, Symbol* method_name, Symbol* method_signature, KlassHandle current_klass); |
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166 static methodHandle resolve_interface_call_or_null(KlassHandle receiver_klass, KlassHandle resolved_klass, Symbol* method_name, Symbol* method_signature, KlassHandle current_klass); |
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167 static methodHandle resolve_static_call_or_null (KlassHandle resolved_klass, Symbol* method_name, Symbol* method_signature, KlassHandle current_klass); |
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168 static methodHandle resolve_special_call_or_null (KlassHandle resolved_klass, Symbol* method_name, Symbol* method_signature, KlassHandle current_klass); |
| 0 | 169 |
| 170 // same as above for compile-time resolution; returns vtable_index if current_klass if linked | |
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171 static int resolve_virtual_vtable_index (KlassHandle receiver_klass, KlassHandle resolved_klass, Symbol* method_name, Symbol* method_signature, KlassHandle current_klass); |
| 0 | 172 |
| 173 // static resolving for compiler (does not throw exceptions, returns null handle if unsuccessful) | |
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174 static methodHandle linktime_resolve_virtual_method_or_null (KlassHandle resolved_klass, Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, bool check_access); |
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175 static methodHandle linktime_resolve_interface_method_or_null(KlassHandle resolved_klass, Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, bool check_access); |
| 0 | 176 |
| 177 // runtime resolving from constant pool | |
| 178 static void resolve_invokestatic (CallInfo& result, constantPoolHandle pool, int index, TRAPS); | |
| 179 static void resolve_invokespecial (CallInfo& result, constantPoolHandle pool, int index, TRAPS); | |
| 180 static void resolve_invokevirtual (CallInfo& result, Handle recv, constantPoolHandle pool, int index, TRAPS); | |
| 181 static void resolve_invokeinterface(CallInfo& result, Handle recv, constantPoolHandle pool, int index, TRAPS); | |
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182 static void resolve_invokedynamic (CallInfo& result, constantPoolHandle pool, int index, TRAPS); |
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183 static void resolve_invokehandle (CallInfo& result, constantPoolHandle pool, int index, TRAPS); |
| 0 | 184 |
| 185 static void resolve_invoke (CallInfo& result, Handle recv, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS); | |
| 186 }; | |
| 1972 | 187 |
| 188 #endif // SHARE_VM_INTERPRETER_LINKRESOLVER_HPP |