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src/share/vm/interpreter/linkResolver.hpp@f6b0eb4e44cf (annotated)

src/share/vm/interpreter/linkResolver.hpp

Mon, 01 Oct 2012 14:50:10 -0700

author
twisti
date
Mon, 01 Oct 2012 14:50:10 -0700
changeset 4133
f6b0eb4e44cf
parent 4037
da91efe96a93
child 5732
b2e698d2276c
permissions
-rw-r--r--

7200949: JSR 292: rubybench/bench/time/bench_base64.rb fails with jruby.jar not on boot class path
Reviewed-by: jrose, kvn

duke@435 1 /*
coleenp@4037 2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
duke@435 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435 4 *
duke@435 5 * This code is free software; you can redistribute it and/or modify it
duke@435 6 * under the terms of the GNU General Public License version 2 only, as
duke@435 7 * published by the Free Software Foundation.
duke@435 8 *
duke@435 9 * This code is distributed in the hope that it will be useful, but WITHOUT
duke@435 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@435 12 * version 2 for more details (a copy is included in the LICENSE file that
duke@435 13 * accompanied this code).
duke@435 14 *
duke@435 15 * You should have received a copy of the GNU General Public License version
duke@435 16 * 2 along with this work; if not, write to the Free Software Foundation,
duke@435 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435 18 *
trims@1907 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907 20 * or visit www.oracle.com if you need additional information or have any
trims@1907 21 * questions.
duke@435 22 *
duke@435 23 */
duke@435 24
stefank@2314 25 #ifndef SHARE_VM_INTERPRETER_LINKRESOLVER_HPP
stefank@2314 26 #define SHARE_VM_INTERPRETER_LINKRESOLVER_HPP
stefank@2314 27
coleenp@4037 28 #include "oops/method.hpp"
stefank@2314 29 #include "utilities/top.hpp"
stefank@2314 30
duke@435 31 // All the necessary definitions for run-time link resolution.
duke@435 32
duke@435 33 // LinkInfo & its subclasses provide all the information gathered
duke@435 34 // for a particular link after resolving it. A link is any reference
duke@435 35 // made from within the bytecodes of a method to an object outside of
duke@435 36 // that method. If the info is invalid, the link has not been resolved
duke@435 37 // successfully.
duke@435 38
duke@435 39 class LinkInfo VALUE_OBJ_CLASS_SPEC {
duke@435 40 };
duke@435 41
duke@435 42
duke@435 43 // Link information for getfield/putfield & getstatic/putstatic bytecodes.
duke@435 44
duke@435 45 class FieldAccessInfo: public LinkInfo {
duke@435 46 protected:
duke@435 47 KlassHandle _klass;
coleenp@2497 48 Symbol* _name;
duke@435 49 AccessFlags _access_flags;
duke@435 50 int _field_index; // original index in the klass
duke@435 51 int _field_offset;
duke@435 52 BasicType _field_type;
duke@435 53
duke@435 54 public:
coleenp@2497 55 void set(KlassHandle klass, Symbol* name, int field_index, int field_offset,
duke@435 56 BasicType field_type, AccessFlags access_flags);
duke@435 57 KlassHandle klass() const { return _klass; }
coleenp@2497 58 Symbol* name() const { return _name; }
duke@435 59 int field_index() const { return _field_index; }
duke@435 60 int field_offset() const { return _field_offset; }
duke@435 61 BasicType field_type() const { return _field_type; }
duke@435 62 AccessFlags access_flags() const { return _access_flags; }
duke@435 63
duke@435 64 // debugging
duke@435 65 void print() PRODUCT_RETURN;
duke@435 66 };
duke@435 67
duke@435 68
duke@435 69 // Link information for all calls.
duke@435 70
duke@435 71 class CallInfo: public LinkInfo {
duke@435 72 private:
duke@435 73 KlassHandle _resolved_klass; // static receiver klass
duke@435 74 KlassHandle _selected_klass; // dynamic receiver class (same as static, or subklass)
duke@435 75 methodHandle _resolved_method; // static target method
duke@435 76 methodHandle _selected_method; // dynamic (actual) target method
duke@435 77 int _vtable_index; // vtable index of selected method
twisti@3969 78 Handle _resolved_appendix; // extra argument in constant pool (if CPCE::has_appendix)
twisti@4133 79 Handle _resolved_method_type; // MethodType (for invokedynamic and invokehandle call sites)
duke@435 80
twisti@4133 81 void set_static( KlassHandle resolved_klass, methodHandle resolved_method , TRAPS);
twisti@4133 82 void set_interface(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method , TRAPS);
twisti@4133 83 void set_virtual( KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index , TRAPS);
twisti@4133 84 void set_handle( methodHandle resolved_method, Handle resolved_appendix, Handle resolved_method_type, TRAPS);
twisti@4133 85 void set_common( KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index , TRAPS);
duke@435 86
duke@435 87 friend class LinkResolver;
duke@435 88
duke@435 89 public:
duke@435 90 KlassHandle resolved_klass() const { return _resolved_klass; }
duke@435 91 KlassHandle selected_klass() const { return _selected_klass; }
duke@435 92 methodHandle resolved_method() const { return _resolved_method; }
duke@435 93 methodHandle selected_method() const { return _selected_method; }
twisti@3969 94 Handle resolved_appendix() const { return _resolved_appendix; }
twisti@4133 95 Handle resolved_method_type() const { return _resolved_method_type; }
duke@435 96
duke@435 97 BasicType result_type() const { return selected_method()->result_type(); }
duke@435 98 bool has_vtable_index() const { return _vtable_index >= 0; }
coleenp@4037 99 bool is_statically_bound() const { return _vtable_index == Method::nonvirtual_vtable_index; }
duke@435 100 int vtable_index() const {
duke@435 101 // Even for interface calls the vtable index could be non-negative.
duke@435 102 // See CallInfo::set_interface.
duke@435 103 assert(has_vtable_index() || is_statically_bound(), "");
duke@435 104 return _vtable_index;
duke@435 105 }
duke@435 106 };
duke@435 107
duke@435 108
duke@435 109 // The LinkResolver is used to resolve constant-pool references at run-time.
duke@435 110 // It does all necessary link-time checks & throws exceptions if necessary.
duke@435 111
duke@435 112 class LinkResolver: AllStatic {
duke@435 113 private:
coleenp@2497 114 static void lookup_method_in_klasses (methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS);
coleenp@2497 115 static void lookup_instance_method_in_klasses (methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS);
coleenp@2497 116 static void lookup_method_in_interfaces (methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS);
twisti@3969 117 static void lookup_polymorphic_method (methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature,
twisti@4133 118 KlassHandle current_klass, Handle *appendix_result_or_null, Handle *method_type_result, TRAPS);
duke@435 119
coleenp@2497 120 static int vtable_index_of_miranda_method(KlassHandle klass, Symbol* name, Symbol* signature, TRAPS);
duke@435 121
duke@435 122 static void resolve_klass (KlassHandle& result, constantPoolHandle pool, int index, TRAPS);
duke@435 123 static void resolve_klass_no_update (KlassHandle& result, constantPoolHandle pool, int index, TRAPS); // no update of constantPool entry
duke@435 124
coleenp@2497 125 static void resolve_pool (KlassHandle& resolved_klass, Symbol*& method_name, Symbol*& method_signature, KlassHandle& current_klass, constantPoolHandle pool, int index, TRAPS);
duke@435 126
coleenp@2497 127 static void resolve_interface_method(methodHandle& resolved_method, KlassHandle resolved_klass, Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS);
coleenp@2497 128 static void resolve_method (methodHandle& resolved_method, KlassHandle resolved_klass, Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS);
duke@435 129
coleenp@2497 130 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);
coleenp@2497 131 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);
coleenp@2497 132 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);
coleenp@2497 133 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);
duke@435 134
duke@435 135 static void runtime_resolve_special_method (CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, KlassHandle current_klass, bool check_access, TRAPS);
duke@435 136 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);
duke@435 137 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);
duke@435 138
duke@435 139 static void check_field_accessability (KlassHandle ref_klass, KlassHandle resolved_klass, KlassHandle sel_klass, fieldDescriptor& fd, TRAPS);
duke@435 140 static void check_method_accessability (KlassHandle ref_klass, KlassHandle resolved_klass, KlassHandle sel_klass, methodHandle sel_method, TRAPS);
duke@435 141
duke@435 142 public:
duke@435 143 // constant pool resolving
duke@435 144 static void check_klass_accessability(KlassHandle ref_klass, KlassHandle sel_klass, TRAPS);
duke@435 145
twisti@3969 146 // static resolving calls (will not run any Java code); used only from Bytecode_invoke::static_target
twisti@3969 147 static void resolve_method_statically(methodHandle& method_result, KlassHandle& klass_result,
twisti@3969 148 Bytecodes::Code code, constantPoolHandle pool, int index, TRAPS);
duke@435 149
duke@435 150 // runtime/static resolving for fields
duke@435 151 static void resolve_field(FieldAccessInfo& result, constantPoolHandle pool, int index, Bytecodes::Code byte, bool check_only, TRAPS);
duke@435 152 // takes an extra bool argument "update_pool" to decide whether to update the constantPool during klass resolution.
duke@435 153 static void resolve_field(FieldAccessInfo& result, constantPoolHandle pool, int index, Bytecodes::Code byte, bool check_only, bool update_pool, TRAPS);
duke@435 154
duke@435 155 // runtime resolving:
duke@435 156 // resolved_klass = specified class (i.e., static receiver class)
duke@435 157 // current_klass = sending method holder (i.e., class containing the method containing the call being resolved)
coleenp@2497 158 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);
coleenp@2497 159 static void resolve_special_call (CallInfo& result, KlassHandle resolved_klass, Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS);
coleenp@2497 160 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);
coleenp@2497 161 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);
twisti@3969 162 static void resolve_handle_call (CallInfo& result, KlassHandle resolved_klass, Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, TRAPS);
twisti@3969 163 static void resolve_dynamic_call (CallInfo& result, Handle bootstrap_specifier, Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, TRAPS);
duke@435 164
duke@435 165 // same as above for compile-time resolution; but returns null handle instead of throwing an exception on error
duke@435 166 // also, does not initialize klass (i.e., no side effects)
coleenp@2497 167 static methodHandle resolve_virtual_call_or_null (KlassHandle receiver_klass, KlassHandle resolved_klass, Symbol* method_name, Symbol* method_signature, KlassHandle current_klass);
coleenp@2497 168 static methodHandle resolve_interface_call_or_null(KlassHandle receiver_klass, KlassHandle resolved_klass, Symbol* method_name, Symbol* method_signature, KlassHandle current_klass);
coleenp@2497 169 static methodHandle resolve_static_call_or_null (KlassHandle resolved_klass, Symbol* method_name, Symbol* method_signature, KlassHandle current_klass);
coleenp@2497 170 static methodHandle resolve_special_call_or_null (KlassHandle resolved_klass, Symbol* method_name, Symbol* method_signature, KlassHandle current_klass);
duke@435 171
duke@435 172 // same as above for compile-time resolution; returns vtable_index if current_klass if linked
coleenp@2497 173 static int resolve_virtual_vtable_index (KlassHandle receiver_klass, KlassHandle resolved_klass, Symbol* method_name, Symbol* method_signature, KlassHandle current_klass);
duke@435 174
duke@435 175 // static resolving for compiler (does not throw exceptions, returns null handle if unsuccessful)
coleenp@2497 176 static methodHandle linktime_resolve_virtual_method_or_null (KlassHandle resolved_klass, Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, bool check_access);
coleenp@2497 177 static methodHandle linktime_resolve_interface_method_or_null(KlassHandle resolved_klass, Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, bool check_access);
duke@435 178
duke@435 179 // runtime resolving from constant pool
duke@435 180 static void resolve_invokestatic (CallInfo& result, constantPoolHandle pool, int index, TRAPS);
duke@435 181 static void resolve_invokespecial (CallInfo& result, constantPoolHandle pool, int index, TRAPS);
duke@435 182 static void resolve_invokevirtual (CallInfo& result, Handle recv, constantPoolHandle pool, int index, TRAPS);
duke@435 183 static void resolve_invokeinterface(CallInfo& result, Handle recv, constantPoolHandle pool, int index, TRAPS);
jrose@1161 184 static void resolve_invokedynamic (CallInfo& result, constantPoolHandle pool, int index, TRAPS);
twisti@3969 185 static void resolve_invokehandle (CallInfo& result, constantPoolHandle pool, int index, TRAPS);
duke@435 186
duke@435 187 static void resolve_invoke (CallInfo& result, Handle recv, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS);
duke@435 188 };
stefank@2314 189
stefank@2314 190 #endif // SHARE_VM_INTERPRETER_LINKRESOLVER_HPP

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