Mercurial > hg > graal-jvmci-8
annotate src/share/vm/interpreter/linkResolver.cpp @ 23347:7ae6a635fad0
8152903: [JVMCI] CompilerToVM::resolveMethod should correctly handle private methods in interfaces
author | Tom Rodriguez <tom.rodriguez@oracle.com> |
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date | Wed, 06 Apr 2016 20:02:32 -0700 |
parents | dd9cc155639c |
children | 719853999215 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2014, 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 #include "precompiled.hpp" |
6934 | 26 #include "classfile/defaultMethods.hpp" |
1972 | 27 #include "classfile/systemDictionary.hpp" |
28 #include "classfile/vmSymbols.hpp" | |
29 #include "compiler/compileBroker.hpp" | |
30 #include "gc_interface/collectedHeap.inline.hpp" | |
31 #include "interpreter/bytecode.hpp" | |
32 #include "interpreter/interpreterRuntime.hpp" | |
33 #include "interpreter/linkResolver.hpp" | |
34 #include "memory/resourceArea.hpp" | |
35 #include "memory/universe.inline.hpp" | |
36 #include "oops/instanceKlass.hpp" | |
37 #include "oops/objArrayOop.hpp" | |
38 #include "prims/methodHandles.hpp" | |
39 #include "prims/nativeLookup.hpp" | |
40 #include "runtime/compilationPolicy.hpp" | |
41 #include "runtime/fieldDescriptor.hpp" | |
42 #include "runtime/frame.inline.hpp" | |
43 #include "runtime/handles.inline.hpp" | |
44 #include "runtime/reflection.hpp" | |
45 #include "runtime/signature.hpp" | |
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46 #include "runtime/thread.inline.hpp" |
1972 | 47 #include "runtime/vmThread.hpp" |
0 | 48 |
49 | |
50 //------------------------------------------------------------------------------------------------------------------------ | |
51 // Implementation of CallInfo | |
52 | |
53 | |
54 void CallInfo::set_static(KlassHandle resolved_klass, methodHandle resolved_method, TRAPS) { | |
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55 int vtable_index = Method::nonvirtual_vtable_index; |
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56 set_common(resolved_klass, resolved_klass, resolved_method, resolved_method, CallInfo::direct_call, vtable_index, CHECK); |
0 | 57 } |
58 | |
59 | |
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60 void CallInfo::set_interface(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int itable_index, TRAPS) { |
0 | 61 // This is only called for interface methods. If the resolved_method |
62 // comes from java/lang/Object, it can be the subject of a virtual call, so | |
63 // we should pick the vtable index from the resolved method. | |
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64 // In that case, the caller must call set_virtual instead of set_interface. |
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65 assert(resolved_method->method_holder()->is_interface(), ""); |
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66 assert(itable_index == resolved_method()->itable_index(), ""); |
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67 set_common(resolved_klass, selected_klass, resolved_method, selected_method, CallInfo::itable_call, itable_index, CHECK); |
0 | 68 } |
69 | |
70 void CallInfo::set_virtual(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index, TRAPS) { | |
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71 assert(vtable_index >= 0 || vtable_index == Method::nonvirtual_vtable_index, "valid index"); |
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72 assert(vtable_index < 0 || !resolved_method->has_vtable_index() || vtable_index == resolved_method->vtable_index(), ""); |
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73 CallKind kind = (vtable_index >= 0 && !resolved_method->can_be_statically_bound() ? CallInfo::vtable_call : CallInfo::direct_call); |
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74 set_common(resolved_klass, selected_klass, resolved_method, selected_method, kind, vtable_index, CHECK); |
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75 assert(!resolved_method->is_compiled_lambda_form(), "these must be handled via an invokehandle call"); |
0 | 76 } |
77 | |
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78 void CallInfo::set_handle(methodHandle resolved_method, Handle resolved_appendix, Handle resolved_method_type, TRAPS) { |
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79 if (resolved_method.is_null()) { |
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80 THROW_MSG(vmSymbols::java_lang_InternalError(), "resolved method is null"); |
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81 } |
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82 KlassHandle resolved_klass = SystemDictionary::MethodHandle_klass(); |
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83 assert(resolved_method->intrinsic_id() == vmIntrinsics::_invokeBasic || |
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84 resolved_method->is_compiled_lambda_form(), |
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85 "linkMethod must return one of these"); |
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86 int vtable_index = Method::nonvirtual_vtable_index; |
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87 assert(!resolved_method->has_vtable_index(), ""); |
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88 set_common(resolved_klass, resolved_klass, resolved_method, resolved_method, CallInfo::direct_call, vtable_index, CHECK); |
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89 _resolved_appendix = resolved_appendix; |
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90 _resolved_method_type = resolved_method_type; |
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91 } |
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92 |
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93 void CallInfo::set_common(KlassHandle resolved_klass, |
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94 KlassHandle selected_klass, |
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95 methodHandle resolved_method, |
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96 methodHandle selected_method, |
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97 CallKind kind, |
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98 int index, |
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99 TRAPS) { |
0 | 100 assert(resolved_method->signature() == selected_method->signature(), "signatures must correspond"); |
101 _resolved_klass = resolved_klass; | |
102 _selected_klass = selected_klass; | |
103 _resolved_method = resolved_method; | |
104 _selected_method = selected_method; | |
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105 _call_kind = kind; |
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106 _call_index = index; |
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107 _resolved_appendix = Handle(); |
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108 DEBUG_ONLY(verify()); // verify before making side effects |
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109 |
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110 CompilationPolicy::compile_if_required(selected_method, THREAD); |
0 | 111 } |
112 | |
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113 // utility query for unreflecting a method |
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114 CallInfo::CallInfo(Method* resolved_method, Klass* resolved_klass) { |
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115 Klass* resolved_method_holder = resolved_method->method_holder(); |
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116 if (resolved_klass == NULL) { // 2nd argument defaults to holder of 1st |
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117 resolved_klass = resolved_method_holder; |
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118 } |
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119 _resolved_klass = resolved_klass; |
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120 _selected_klass = resolved_klass; |
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121 _resolved_method = resolved_method; |
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122 _selected_method = resolved_method; |
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123 // classify: |
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124 CallKind kind = CallInfo::unknown_kind; |
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125 int index = resolved_method->vtable_index(); |
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126 if (resolved_method->can_be_statically_bound()) { |
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127 kind = CallInfo::direct_call; |
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128 } else if (!resolved_method_holder->is_interface()) { |
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129 // Could be an Object method inherited into an interface, but still a vtable call. |
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130 kind = CallInfo::vtable_call; |
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131 } else if (!resolved_klass->is_interface()) { |
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132 // A default or miranda method. Compute the vtable index. |
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133 ResourceMark rm; |
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134 klassVtable* vt = InstanceKlass::cast(resolved_klass)->vtable(); |
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135 index = LinkResolver::vtable_index_of_interface_method(resolved_klass, |
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136 resolved_method); |
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137 assert(index >= 0 , "we should have valid vtable index at this point"); |
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138 |
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139 kind = CallInfo::vtable_call; |
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140 } else if (resolved_method->has_vtable_index()) { |
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141 // Can occur if an interface redeclares a method of Object. |
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142 |
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143 #ifdef ASSERT |
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144 // Ensure that this is really the case. |
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145 KlassHandle object_klass = SystemDictionary::Object_klass(); |
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146 Method * object_resolved_method = object_klass()->vtable()->method_at(index); |
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147 assert(object_resolved_method->name() == resolved_method->name(), |
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148 err_msg("Object and interface method names should match at vtable index %d, %s != %s", |
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149 index, object_resolved_method->name()->as_C_string(), resolved_method->name()->as_C_string())); |
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150 assert(object_resolved_method->signature() == resolved_method->signature(), |
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151 err_msg("Object and interface method signatures should match at vtable index %d, %s != %s", |
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152 index, object_resolved_method->signature()->as_C_string(), resolved_method->signature()->as_C_string())); |
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153 #endif // ASSERT |
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154 |
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155 kind = CallInfo::vtable_call; |
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156 } else { |
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157 // A regular interface call. |
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158 kind = CallInfo::itable_call; |
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159 index = resolved_method->itable_index(); |
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160 } |
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161 assert(index == Method::nonvirtual_vtable_index || index >= 0, err_msg("bad index %d", index)); |
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162 _call_kind = kind; |
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163 _call_index = index; |
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164 _resolved_appendix = Handle(); |
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165 DEBUG_ONLY(verify()); |
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166 } |
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167 |
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168 #ifdef ASSERT |
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169 void CallInfo::verify() { |
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170 switch (call_kind()) { // the meaning and allowed value of index depends on kind |
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171 case CallInfo::direct_call: |
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172 if (_call_index == Method::nonvirtual_vtable_index) break; |
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173 // else fall through to check vtable index: |
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174 case CallInfo::vtable_call: |
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175 assert(resolved_klass()->verify_vtable_index(_call_index), ""); |
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176 break; |
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177 case CallInfo::itable_call: |
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178 assert(resolved_method()->method_holder()->verify_itable_index(_call_index), ""); |
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179 break; |
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180 case CallInfo::unknown_kind: |
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181 assert(call_kind() != CallInfo::unknown_kind, "CallInfo must be set"); |
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182 break; |
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183 default: |
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184 fatal(err_msg_res("Unexpected call kind %d", call_kind())); |
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185 } |
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186 } |
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187 #endif //ASSERT |
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188 |
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189 |
0 | 190 |
191 //------------------------------------------------------------------------------------------------------------------------ | |
192 // Klass resolution | |
193 | |
194 void LinkResolver::check_klass_accessability(KlassHandle ref_klass, KlassHandle sel_klass, TRAPS) { | |
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195 if (!Reflection::verify_class_access(ref_klass(), |
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196 sel_klass(), |
0 | 197 true)) { |
198 ResourceMark rm(THREAD); | |
199 Exceptions::fthrow( | |
200 THREAD_AND_LOCATION, | |
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201 vmSymbols::java_lang_IllegalAccessError(), |
0 | 202 "tried to access class %s from class %s", |
203 sel_klass->external_name(), | |
204 ref_klass->external_name() | |
205 ); | |
206 return; | |
207 } | |
208 } | |
209 | |
210 void LinkResolver::resolve_klass(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) { | |
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211 Klass* result_oop = pool->klass_ref_at(index, CHECK); |
0 | 212 result = KlassHandle(THREAD, result_oop); |
213 } | |
214 | |
215 //------------------------------------------------------------------------------------------------------------------------ | |
216 // Method resolution | |
217 // | |
218 // According to JVM spec. $5.4.3c & $5.4.3d | |
219 | |
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220 // Look up method in klasses, including static methods |
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221 // Then look up local default methods |
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222 void LinkResolver::lookup_method_in_klasses(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, bool checkpolymorphism, bool in_imethod_resolve, TRAPS) { |
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223 // Ignore overpasses so statics can be found during resolution |
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224 Method* result_oop = klass->uncached_lookup_method(name, signature, Klass::skip_overpass); |
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225 |
18046 | 226 if (klass->oop_is_array()) { |
227 // Only consider klass and super klass for arrays | |
228 result = methodHandle(THREAD, result_oop); | |
229 return; | |
230 } | |
231 | |
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232 // JDK 8, JVMS 5.4.3.4: Interface method resolution should |
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233 // ignore static and non-public methods of java.lang.Object, |
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234 // like clone, finalize, registerNatives. |
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235 if (in_imethod_resolve && |
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236 result_oop != NULL && |
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237 klass->is_interface() && |
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238 (result_oop->is_static() || !result_oop->is_public()) && |
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239 result_oop->method_holder() == SystemDictionary::Object_klass()) { |
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240 result_oop = NULL; |
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241 } |
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242 |
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243 // Before considering default methods, check for an overpass in the |
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244 // current class if a method has not been found. |
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245 if (result_oop == NULL) { |
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246 result_oop = InstanceKlass::cast(klass())->find_method(name, signature); |
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247 } |
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248 |
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249 if (result_oop == NULL) { |
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250 Array<Method*>* default_methods = InstanceKlass::cast(klass())->default_methods(); |
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251 if (default_methods != NULL) { |
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252 result_oop = InstanceKlass::find_method(default_methods, name, signature); |
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253 } |
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254 } |
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255 |
13413 | 256 if (checkpolymorphism && EnableInvokeDynamic && result_oop != NULL) { |
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257 vmIntrinsics::ID iid = result_oop->intrinsic_id(); |
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258 if (MethodHandles::is_signature_polymorphic(iid)) { |
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259 // Do not link directly to these. The VM must produce a synthetic one using lookup_polymorphic_method. |
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260 return; |
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261 } |
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262 } |
0 | 263 result = methodHandle(THREAD, result_oop); |
264 } | |
265 | |
266 // returns first instance method | |
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267 // Looks up method in classes, then looks up local default methods |
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268 void LinkResolver::lookup_instance_method_in_klasses(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
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269 Method* result_oop = klass->uncached_lookup_method(name, signature, Klass::normal); |
0 | 270 result = methodHandle(THREAD, result_oop); |
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271 while (!result.is_null() && result->is_static() && result->method_holder()->super() != NULL) { |
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272 KlassHandle super_klass = KlassHandle(THREAD, result->method_holder()->super()); |
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273 result = methodHandle(THREAD, super_klass->uncached_lookup_method(name, signature, Klass::normal)); |
0 | 274 } |
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275 |
18046 | 276 if (klass->oop_is_array()) { |
277 // Only consider klass and super klass for arrays | |
278 return; | |
279 } | |
280 | |
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281 if (result.is_null()) { |
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282 Array<Method*>* default_methods = InstanceKlass::cast(klass())->default_methods(); |
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283 if (default_methods != NULL) { |
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284 result = methodHandle(InstanceKlass::find_method(default_methods, name, signature)); |
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285 assert(result.is_null() || !result->is_static(), "static defaults not allowed"); |
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286 } |
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287 } |
0 | 288 } |
289 | |
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290 int LinkResolver::vtable_index_of_interface_method(KlassHandle klass, |
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291 methodHandle resolved_method) { |
0 | 292 |
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293 int vtable_index = Method::invalid_vtable_index; |
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294 Symbol* name = resolved_method->name(); |
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295 Symbol* signature = resolved_method->signature(); |
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296 |
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297 // First check in default method array |
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298 if (!resolved_method->is_abstract() && |
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299 (InstanceKlass::cast(klass())->default_methods() != NULL)) { |
20785 | 300 int index = InstanceKlass::find_method_index(InstanceKlass::cast(klass())->default_methods(), name, signature, false, false); |
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301 if (index >= 0 ) { |
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302 vtable_index = InstanceKlass::cast(klass())->default_vtable_indices()->at(index); |
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303 } |
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304 } |
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305 if (vtable_index == Method::invalid_vtable_index) { |
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306 // get vtable_index for miranda methods |
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307 ResourceMark rm; |
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308 klassVtable *vt = InstanceKlass::cast(klass())->vtable(); |
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309 vtable_index = vt->index_of_miranda(name, signature); |
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310 } |
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311 return vtable_index; |
0 | 312 } |
313 | |
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314 void LinkResolver::lookup_method_in_interfaces(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
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315 InstanceKlass *ik = InstanceKlass::cast(klass()); |
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316 |
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317 // Specify 'true' in order to skip default methods when searching the |
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318 // interfaces. Function lookup_method_in_klasses() already looked for |
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319 // the method in the default methods table. |
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320 result = methodHandle(THREAD, ik->lookup_method_in_all_interfaces(name, signature, Klass::skip_defaults)); |
0 | 321 } |
322 | |
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323 void LinkResolver::lookup_polymorphic_method(methodHandle& result, |
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324 KlassHandle klass, Symbol* name, Symbol* full_signature, |
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325 KlassHandle current_klass, |
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326 Handle *appendix_result_or_null, |
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327 Handle *method_type_result, |
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328 TRAPS) { |
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329 vmIntrinsics::ID iid = MethodHandles::signature_polymorphic_name_id(name); |
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330 if (TraceMethodHandles) { |
9082 | 331 ResourceMark rm(THREAD); |
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332 tty->print_cr("lookup_polymorphic_method iid=%s %s.%s%s", |
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333 vmIntrinsics::name_at(iid), klass->external_name(), |
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334 name->as_C_string(), full_signature->as_C_string()); |
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335 } |
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336 if (EnableInvokeDynamic && |
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337 klass() == SystemDictionary::MethodHandle_klass() && |
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338 iid != vmIntrinsics::_none) { |
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339 if (MethodHandles::is_signature_polymorphic_intrinsic(iid)) { |
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340 // Most of these do not need an up-call to Java to resolve, so can be done anywhere. |
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341 // Do not erase last argument type (MemberName) if it is a static linkTo method. |
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342 bool keep_last_arg = MethodHandles::is_signature_polymorphic_static(iid); |
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343 TempNewSymbol basic_signature = |
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344 MethodHandles::lookup_basic_type_signature(full_signature, keep_last_arg, CHECK); |
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345 if (TraceMethodHandles) { |
9082 | 346 ResourceMark rm(THREAD); |
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347 tty->print_cr("lookup_polymorphic_method %s %s => basic %s", |
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348 name->as_C_string(), |
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349 full_signature->as_C_string(), |
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350 basic_signature->as_C_string()); |
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351 } |
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352 result = SystemDictionary::find_method_handle_intrinsic(iid, |
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353 basic_signature, |
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354 CHECK); |
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355 if (result.not_null()) { |
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356 assert(result->is_method_handle_intrinsic(), "MH.invokeBasic or MH.linkTo* intrinsic"); |
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357 assert(result->intrinsic_id() != vmIntrinsics::_invokeGeneric, "wrong place to find this"); |
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358 assert(basic_signature == result->signature(), "predict the result signature"); |
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359 if (TraceMethodHandles) { |
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360 tty->print("lookup_polymorphic_method => intrinsic "); |
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361 result->print_on(tty); |
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362 } |
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363 return; |
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364 } |
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365 } else if (iid == vmIntrinsics::_invokeGeneric |
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366 && THREAD->can_call_java() |
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367 && appendix_result_or_null != NULL) { |
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368 // This is a method with type-checking semantics. |
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369 // We will ask Java code to spin an adapter method for it. |
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370 if (!MethodHandles::enabled()) { |
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371 // Make sure the Java part of the runtime has been booted up. |
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372 Klass* natives = SystemDictionary::MethodHandleNatives_klass(); |
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373 if (natives == NULL || InstanceKlass::cast(natives)->is_not_initialized()) { |
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374 SystemDictionary::resolve_or_fail(vmSymbols::java_lang_invoke_MethodHandleNatives(), |
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375 Handle(), |
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376 Handle(), |
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377 true, |
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378 CHECK); |
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379 } |
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380 } |
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381 |
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382 Handle appendix; |
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383 Handle method_type; |
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384 result = SystemDictionary::find_method_handle_invoker(name, |
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385 full_signature, |
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386 current_klass, |
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387 &appendix, |
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388 &method_type, |
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389 CHECK); |
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390 if (TraceMethodHandles) { |
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391 tty->print("lookup_polymorphic_method => (via Java) "); |
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392 result->print_on(tty); |
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393 tty->print(" lookup_polymorphic_method => appendix = "); |
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394 if (appendix.is_null()) tty->print_cr("(none)"); |
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395 else appendix->print_on(tty); |
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396 } |
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397 if (result.not_null()) { |
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398 #ifdef ASSERT |
9082 | 399 ResourceMark rm(THREAD); |
400 | |
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401 TempNewSymbol basic_signature = |
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402 MethodHandles::lookup_basic_type_signature(full_signature, CHECK); |
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403 int actual_size_of_params = result->size_of_parameters(); |
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404 int expected_size_of_params = ArgumentSizeComputer(basic_signature).size(); |
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405 // +1 for MethodHandle.this, +1 for trailing MethodType |
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406 if (!MethodHandles::is_signature_polymorphic_static(iid)) expected_size_of_params += 1; |
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407 if (appendix.not_null()) expected_size_of_params += 1; |
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408 if (actual_size_of_params != expected_size_of_params) { |
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409 tty->print_cr("*** basic_signature=%s", basic_signature->as_C_string()); |
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410 tty->print_cr("*** result for %s: ", vmIntrinsics::name_at(iid)); |
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411 result->print(); |
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412 } |
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413 assert(actual_size_of_params == expected_size_of_params, |
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414 err_msg("%d != %d", actual_size_of_params, expected_size_of_params)); |
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415 #endif //ASSERT |
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416 |
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417 assert(appendix_result_or_null != NULL, ""); |
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418 (*appendix_result_or_null) = appendix; |
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419 (*method_type_result) = method_type; |
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420 return; |
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421 } |
710 | 422 } |
423 } | |
424 } | |
425 | |
0 | 426 void LinkResolver::check_method_accessability(KlassHandle ref_klass, |
427 KlassHandle resolved_klass, | |
428 KlassHandle sel_klass, | |
429 methodHandle sel_method, | |
430 TRAPS) { | |
431 | |
432 AccessFlags flags = sel_method->access_flags(); | |
433 | |
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434 // Special case: arrays always override "clone". JVMS 2.15. |
0 | 435 // If the resolved klass is an array class, and the declaring class |
436 // is java.lang.Object and the method is "clone", set the flags | |
437 // to public. | |
438 // | |
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439 // We'll check for the method name first, as that's most likely |
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440 // to be false (so we'll short-circuit out of these tests). |
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441 if (sel_method->name() == vmSymbols::clone_name() && |
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442 sel_klass() == SystemDictionary::Object_klass() && |
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443 resolved_klass->oop_is_array()) { |
0 | 444 // We need to change "protected" to "public". |
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445 assert(flags.is_protected(), "clone not protected?"); |
0 | 446 jint new_flags = flags.as_int(); |
447 new_flags = new_flags & (~JVM_ACC_PROTECTED); | |
448 new_flags = new_flags | JVM_ACC_PUBLIC; | |
449 flags.set_flags(new_flags); | |
450 } | |
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451 // assert(extra_arg_result_or_null != NULL, "must be able to return extra argument"); |
0 | 452 |
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453 if (!Reflection::verify_field_access(ref_klass(), |
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454 resolved_klass(), |
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455 sel_klass(), |
0 | 456 flags, |
457 true)) { | |
458 ResourceMark rm(THREAD); | |
459 Exceptions::fthrow( | |
460 THREAD_AND_LOCATION, | |
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461 vmSymbols::java_lang_IllegalAccessError(), |
0 | 462 "tried to access method %s.%s%s from class %s", |
463 sel_klass->external_name(), | |
464 sel_method->name()->as_C_string(), | |
465 sel_method->signature()->as_C_string(), | |
466 ref_klass->external_name() | |
467 ); | |
468 return; | |
469 } | |
470 } | |
471 | |
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472 void LinkResolver::resolve_method_statically(methodHandle& resolved_method, KlassHandle& resolved_klass, |
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473 Bytecodes::Code code, constantPoolHandle pool, int index, TRAPS) { |
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474 // This method is used only |
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475 // (1) in C2 from InlineTree::ok_to_inline (via ciMethod::check_call), |
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476 // and |
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477 // (2) in Bytecode_invoke::static_target |
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478 // It appears to fail when applied to an invokeinterface call site. |
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479 // FIXME: Remove this method and ciMethod::check_call; refactor to use the other LinkResolver entry points. |
0 | 480 // resolve klass |
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481 if (code == Bytecodes::_invokedynamic) { |
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482 resolved_klass = SystemDictionary::MethodHandle_klass(); |
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483 Symbol* method_name = vmSymbols::invoke_name(); |
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484 Symbol* method_signature = pool->signature_ref_at(index); |
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485 KlassHandle current_klass(THREAD, pool->pool_holder()); |
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486 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, false, CHECK); |
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487 return; |
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488 } |
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489 |
0 | 490 resolve_klass(resolved_klass, pool, index, CHECK); |
491 | |
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492 Symbol* method_name = pool->name_ref_at(index); |
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493 Symbol* method_signature = pool->signature_ref_at(index); |
0 | 494 KlassHandle current_klass(THREAD, pool->pool_holder()); |
495 | |
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496 if (pool->has_preresolution() |
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497 || (resolved_klass() == SystemDictionary::MethodHandle_klass() && |
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498 MethodHandles::is_signature_polymorphic_name(resolved_klass(), method_name))) { |
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499 Method* result_oop = ConstantPool::method_at_if_loaded(pool, index); |
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500 if (result_oop != NULL) { |
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501 resolved_method = methodHandle(THREAD, result_oop); |
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502 return; |
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503 } |
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504 } |
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505 |
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506 if (code == Bytecodes::_invokeinterface) { |
13413 | 507 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
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508 } else if (code == Bytecodes::_invokevirtual) { |
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509 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
13413 | 510 } else if (!resolved_klass->is_interface()) { |
511 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, false, CHECK); | |
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512 } else { |
13413 | 513 bool nostatics = (code == Bytecodes::_invokestatic) ? false : true; |
514 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, nostatics, CHECK); | |
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515 } |
0 | 516 } |
517 | |
518 void LinkResolver::resolve_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
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519 Symbol* method_name, Symbol* method_signature, |
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520 KlassHandle current_klass, bool check_access, |
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521 bool require_methodref, TRAPS) { |
0 | 522 |
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523 Handle nested_exception; |
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524 |
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525 // 1. check if methodref required, that resolved_klass is not interfacemethodref |
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526 if (require_methodref && resolved_klass->is_interface()) { |
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527 ResourceMark rm(THREAD); |
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528 char buf[200]; |
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529 jio_snprintf(buf, sizeof(buf), "Found interface %s, but class was expected", |
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530 resolved_klass()->external_name()); |
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531 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
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532 } |
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533 |
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534 // 2. lookup method in resolved klass and its super klasses |
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535 lookup_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, true, false, CHECK); |
0 | 536 |
18046 | 537 if (resolved_method.is_null() && !resolved_klass->oop_is_array()) { // not found in the class hierarchy |
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538 // 3. lookup method in all the interfaces implemented by the resolved klass |
0 | 539 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); |
540 | |
541 if (resolved_method.is_null()) { | |
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542 // JSR 292: see if this is an implicitly generated method MethodHandle.linkToVirtual(*...), etc |
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543 lookup_polymorphic_method(resolved_method, resolved_klass, method_name, method_signature, |
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544 current_klass, (Handle*)NULL, (Handle*)NULL, THREAD); |
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545 if (HAS_PENDING_EXCEPTION) { |
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546 nested_exception = Handle(THREAD, PENDING_EXCEPTION); |
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547 CLEAR_PENDING_EXCEPTION; |
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548 } |
710 | 549 } |
18046 | 550 } |
710 | 551 |
18046 | 552 if (resolved_method.is_null()) { |
553 // 4. method lookup failed | |
554 ResourceMark rm(THREAD); | |
555 THROW_MSG_CAUSE(vmSymbols::java_lang_NoSuchMethodError(), | |
556 Method::name_and_sig_as_C_string(resolved_klass(), | |
557 method_name, | |
558 method_signature), | |
559 nested_exception); | |
0 | 560 } |
561 | |
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562 // 5. access checks, access checking may be turned off when calling from within the VM. |
0 | 563 if (check_access) { |
564 assert(current_klass.not_null() , "current_klass should not be null"); | |
565 | |
566 // check if method can be accessed by the referring class | |
567 check_method_accessability(current_klass, | |
568 resolved_klass, | |
569 KlassHandle(THREAD, resolved_method->method_holder()), | |
570 resolved_method, | |
571 CHECK); | |
572 | |
573 // check loader constraints | |
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574 Handle loader (THREAD, InstanceKlass::cast(current_klass())->class_loader()); |
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575 Handle class_loader (THREAD, resolved_method->method_holder()->class_loader()); |
0 | 576 { |
577 ResourceMark rm(THREAD); | |
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578 Symbol* failed_type_symbol = |
0 | 579 SystemDictionary::check_signature_loaders(method_signature, loader, |
580 class_loader, true, CHECK); | |
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581 if (failed_type_symbol != NULL) { |
0 | 582 const char* msg = "loader constraint violation: when resolving method" |
583 " \"%s\" the class loader (instance of %s) of the current class, %s," | |
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584 " and the class loader (instance of %s) for the method's defining class, %s, have" |
0 | 585 " different Class objects for the type %s used in the signature"; |
6983 | 586 char* sig = Method::name_and_sig_as_C_string(resolved_klass(),method_name,method_signature); |
0 | 587 const char* loader1 = SystemDictionary::loader_name(loader()); |
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588 char* current = InstanceKlass::cast(current_klass())->name()->as_C_string(); |
0 | 589 const char* loader2 = SystemDictionary::loader_name(class_loader()); |
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590 char* target = InstanceKlass::cast(resolved_method->method_holder()) |
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591 ->name()->as_C_string(); |
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592 char* failed_type_name = failed_type_symbol->as_C_string(); |
0 | 593 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + |
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594 strlen(current) + strlen(loader2) + strlen(target) + |
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595 strlen(failed_type_name) + 1; |
0 | 596 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
597 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, | |
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598 target, failed_type_name); |
0 | 599 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); |
600 } | |
601 } | |
602 } | |
603 } | |
604 | |
605 void LinkResolver::resolve_interface_method(methodHandle& resolved_method, | |
606 KlassHandle resolved_klass, | |
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607 Symbol* method_name, |
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608 Symbol* method_signature, |
0 | 609 KlassHandle current_klass, |
13413 | 610 bool check_access, |
611 bool nostatics, TRAPS) { | |
0 | 612 |
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613 // check if klass is interface |
0 | 614 if (!resolved_klass->is_interface()) { |
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615 ResourceMark rm(THREAD); |
0 | 616 char buf[200]; |
6983 | 617 jio_snprintf(buf, sizeof(buf), "Found class %s, but interface was expected", resolved_klass()->external_name()); |
0 | 618 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
619 } | |
620 | |
621 // lookup method in this interface or its super, java.lang.Object | |
13413 | 622 // JDK8: also look for static methods |
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623 lookup_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, false, true, CHECK); |
0 | 624 |
18046 | 625 if (resolved_method.is_null() && !resolved_klass->oop_is_array()) { |
0 | 626 // lookup method in all the super-interfaces |
627 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
18046 | 628 } |
629 | |
630 if (resolved_method.is_null()) { | |
631 // no method found | |
632 ResourceMark rm(THREAD); | |
633 THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(), | |
634 Method::name_and_sig_as_C_string(resolved_klass(), | |
635 method_name, | |
636 method_signature)); | |
0 | 637 } |
638 | |
639 if (check_access) { | |
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640 // JDK8 adds non-public interface methods, and accessability check requirement |
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641 assert(current_klass.not_null() , "current_klass should not be null"); |
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642 |
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643 // check if method can be accessed by the referring class |
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644 check_method_accessability(current_klass, |
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645 resolved_klass, |
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646 KlassHandle(THREAD, resolved_method->method_holder()), |
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647 resolved_method, |
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648 CHECK); |
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649 |
0 | 650 HandleMark hm(THREAD); |
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651 Handle loader (THREAD, InstanceKlass::cast(current_klass())->class_loader()); |
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652 Handle class_loader (THREAD, resolved_method->method_holder()->class_loader()); |
0 | 653 { |
654 ResourceMark rm(THREAD); | |
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655 Symbol* failed_type_symbol = |
0 | 656 SystemDictionary::check_signature_loaders(method_signature, loader, |
657 class_loader, true, CHECK); | |
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658 if (failed_type_symbol != NULL) { |
0 | 659 const char* msg = "loader constraint violation: when resolving " |
660 "interface method \"%s\" the class loader (instance of %s) of the " | |
661 "current class, %s, and the class loader (instance of %s) for " | |
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662 "the method's defining class, %s, have different Class objects for the type %s " |
0 | 663 "used in the signature"; |
6983 | 664 char* sig = Method::name_and_sig_as_C_string(resolved_klass(),method_name,method_signature); |
0 | 665 const char* loader1 = SystemDictionary::loader_name(loader()); |
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666 char* current = InstanceKlass::cast(current_klass())->name()->as_C_string(); |
0 | 667 const char* loader2 = SystemDictionary::loader_name(class_loader()); |
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668 char* target = InstanceKlass::cast(resolved_method->method_holder()) |
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669 ->name()->as_C_string(); |
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670 char* failed_type_name = failed_type_symbol->as_C_string(); |
0 | 671 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + |
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672 strlen(current) + strlen(loader2) + strlen(target) + |
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673 strlen(failed_type_name) + 1; |
0 | 674 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
675 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, | |
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676 target, failed_type_name); |
0 | 677 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); |
678 } | |
679 } | |
680 } | |
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681 |
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682 if (nostatics && resolved_method->is_static()) { |
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683 ResourceMark rm(THREAD); |
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684 char buf[200]; |
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685 jio_snprintf(buf, sizeof(buf), "Expected instance not static method %s", |
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686 Method::name_and_sig_as_C_string(resolved_klass(), |
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687 resolved_method->name(), resolved_method->signature())); |
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688 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
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689 } |
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690 |
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691 if (TraceItables && Verbose) { |
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692 ResourceMark rm(THREAD); |
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693 tty->print("invokeinterface resolved method: caller-class:%s, compile-time-class:%s, method:%s, method_holder:%s, access_flags: ", |
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694 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name()), |
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695 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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696 Method::name_and_sig_as_C_string(resolved_klass(), |
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697 resolved_method->name(), |
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698 resolved_method->signature()), |
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699 resolved_method->method_holder()->internal_name() |
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700 ); |
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701 resolved_method->access_flags().print_on(tty); |
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702 if (resolved_method->is_default_method()) { |
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703 tty->print("default "); |
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704 } |
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705 if (resolved_method->is_overpass()) { |
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706 tty->print("overpass"); |
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707 } |
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708 tty->cr(); |
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709 } |
0 | 710 } |
711 | |
712 //------------------------------------------------------------------------------------------------------------------------ | |
713 // Field resolution | |
714 | |
715 void LinkResolver::check_field_accessability(KlassHandle ref_klass, | |
716 KlassHandle resolved_klass, | |
717 KlassHandle sel_klass, | |
718 fieldDescriptor& fd, | |
719 TRAPS) { | |
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720 if (!Reflection::verify_field_access(ref_klass(), |
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721 resolved_klass(), |
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722 sel_klass(), |
0 | 723 fd.access_flags(), |
724 true)) { | |
725 ResourceMark rm(THREAD); | |
726 Exceptions::fthrow( | |
727 THREAD_AND_LOCATION, | |
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728 vmSymbols::java_lang_IllegalAccessError(), |
0 | 729 "tried to access field %s.%s from class %s", |
730 sel_klass->external_name(), | |
731 fd.name()->as_C_string(), | |
732 ref_klass->external_name() | |
733 ); | |
734 return; | |
735 } | |
736 } | |
737 | |
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738 void LinkResolver::resolve_field_access(fieldDescriptor& result, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS) { |
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739 resolve_field_access(result, pool, index, byte, true, true, THREAD); |
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740 } |
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741 |
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742 void LinkResolver::resolve_field_access(fieldDescriptor& result, constantPoolHandle pool, int index, Bytecodes::Code byte, bool check_access, bool initialize_class, TRAPS) { |
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743 // Load these early in case the resolve of the containing klass fails |
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744 Symbol* field = pool->name_ref_at(index); |
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745 Symbol* sig = pool->signature_ref_at(index); |
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746 |
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747 // resolve specified klass |
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748 KlassHandle resolved_klass; |
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749 resolve_klass(resolved_klass, pool, index, CHECK); |
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750 |
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751 KlassHandle current_klass(THREAD, pool->pool_holder()); |
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752 resolve_field(result, resolved_klass, field, sig, current_klass, byte, check_access, initialize_class, CHECK); |
0 | 753 } |
754 | |
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755 void LinkResolver::resolve_field(fieldDescriptor& fd, KlassHandle resolved_klass, Symbol* field, Symbol* sig, |
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756 KlassHandle current_klass, Bytecodes::Code byte, bool check_access, bool initialize_class, |
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757 TRAPS) { |
0 | 758 assert(byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic || |
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759 byte == Bytecodes::_getfield || byte == Bytecodes::_putfield || |
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760 (byte == Bytecodes::_nop && !check_access), "bad field access bytecode"); |
0 | 761 |
762 bool is_static = (byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic); | |
763 bool is_put = (byte == Bytecodes::_putfield || byte == Bytecodes::_putstatic); | |
764 | |
765 // Check if there's a resolved klass containing the field | |
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766 if (resolved_klass.is_null()) { |
0 | 767 ResourceMark rm(THREAD); |
768 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); | |
769 } | |
770 | |
771 // Resolve instance field | |
18046 | 772 KlassHandle sel_klass(THREAD, resolved_klass->find_field(field, sig, &fd)); |
0 | 773 // check if field exists; i.e., if a klass containing the field def has been selected |
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774 if (sel_klass.is_null()) { |
0 | 775 ResourceMark rm(THREAD); |
776 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); | |
777 } | |
778 | |
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779 if (!check_access) |
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780 // Access checking may be turned off when calling from within the VM. |
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781 return; |
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782 |
0 | 783 // check access |
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784 check_field_accessability(current_klass, resolved_klass, sel_klass, fd, CHECK); |
0 | 785 |
786 // check for errors | |
787 if (is_static != fd.is_static()) { | |
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788 ResourceMark rm(THREAD); |
0 | 789 char msg[200]; |
6983 | 790 jio_snprintf(msg, sizeof(msg), "Expected %s field %s.%s", is_static ? "static" : "non-static", resolved_klass()->external_name(), fd.name()->as_C_string()); |
0 | 791 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), msg); |
792 } | |
793 | |
794 // Final fields can only be accessed from its own class. | |
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795 if (is_put && fd.access_flags().is_final() && sel_klass() != current_klass()) { |
0 | 796 THROW(vmSymbols::java_lang_IllegalAccessError()); |
797 } | |
798 | |
799 // initialize resolved_klass if necessary | |
800 // note 1: the klass which declared the field must be initialized (i.e, sel_klass) | |
801 // according to the newest JVM spec (5.5, p.170) - was bug (gri 7/28/99) | |
802 // | |
803 // note 2: we don't want to force initialization if we are just checking | |
804 // if the field access is legal; e.g., during compilation | |
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805 if (is_static && initialize_class) { |
0 | 806 sel_klass->initialize(CHECK); |
807 } | |
808 | |
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809 if (sel_klass() != current_klass()) { |
0 | 810 HandleMark hm(THREAD); |
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811 Handle ref_loader (THREAD, InstanceKlass::cast(current_klass())->class_loader()); |
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812 Handle sel_loader (THREAD, InstanceKlass::cast(sel_klass())->class_loader()); |
0 | 813 { |
814 ResourceMark rm(THREAD); | |
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815 Symbol* failed_type_symbol = |
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816 SystemDictionary::check_signature_loaders(sig, |
0 | 817 ref_loader, sel_loader, |
818 false, | |
819 CHECK); | |
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820 if (failed_type_symbol != NULL) { |
0 | 821 const char* msg = "loader constraint violation: when resolving field" |
822 " \"%s\" the class loader (instance of %s) of the referring class, " | |
823 "%s, and the class loader (instance of %s) for the field's resolved " | |
824 "type, %s, have different Class objects for that type"; | |
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825 char* field_name = field->as_C_string(); |
0 | 826 const char* loader1 = SystemDictionary::loader_name(ref_loader()); |
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827 char* sel = InstanceKlass::cast(sel_klass())->name()->as_C_string(); |
0 | 828 const char* loader2 = SystemDictionary::loader_name(sel_loader()); |
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829 char* failed_type_name = failed_type_symbol->as_C_string(); |
0 | 830 size_t buflen = strlen(msg) + strlen(field_name) + strlen(loader1) + |
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831 strlen(sel) + strlen(loader2) + strlen(failed_type_name) + 1; |
0 | 832 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
833 jio_snprintf(buf, buflen, msg, field_name, loader1, sel, loader2, | |
834 failed_type_name); | |
835 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); | |
836 } | |
837 } | |
838 } | |
839 | |
840 // return information. note that the klass is set to the actual klass containing the | |
841 // field, otherwise access of static fields in superclasses will not work. | |
842 } | |
843 | |
844 | |
845 //------------------------------------------------------------------------------------------------------------------------ | |
846 // Invoke resolution | |
847 // | |
848 // Naming conventions: | |
849 // | |
850 // resolved_method the specified method (i.e., static receiver specified via constant pool index) | |
851 // sel_method the selected method (selected via run-time lookup; e.g., based on dynamic receiver class) | |
852 // resolved_klass the specified klass (i.e., specified via constant pool index) | |
853 // recv_klass the receiver klass | |
854 | |
855 | |
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856 void LinkResolver::resolve_static_call(CallInfo& result, KlassHandle& resolved_klass, Symbol* method_name, |
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857 Symbol* method_signature, KlassHandle current_klass, |
0 | 858 bool check_access, bool initialize_class, TRAPS) { |
859 methodHandle resolved_method; | |
860 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
6983 | 861 resolved_klass = KlassHandle(THREAD, resolved_method->method_holder()); |
0 | 862 |
863 // Initialize klass (this should only happen if everything is ok) | |
864 if (initialize_class && resolved_klass->should_be_initialized()) { | |
865 resolved_klass->initialize(CHECK); | |
866 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
867 } | |
868 | |
869 // setup result | |
870 result.set_static(resolved_klass, resolved_method, CHECK); | |
871 } | |
872 | |
873 // throws linktime exceptions | |
874 void LinkResolver::linktime_resolve_static_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
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875 Symbol* method_name, Symbol* method_signature, |
0 | 876 KlassHandle current_klass, bool check_access, TRAPS) { |
877 | |
13413 | 878 if (!resolved_klass->is_interface()) { |
879 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, false, CHECK); | |
880 } else { | |
881 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, false, CHECK); | |
882 } | |
0 | 883 assert(resolved_method->name() != vmSymbols::class_initializer_name(), "should have been checked in verifier"); |
884 | |
885 // check if static | |
886 if (!resolved_method->is_static()) { | |
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887 ResourceMark rm(THREAD); |
0 | 888 char buf[200]; |
6983 | 889 jio_snprintf(buf, sizeof(buf), "Expected static method %s", Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 890 resolved_method->name(), |
891 resolved_method->signature())); | |
892 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
893 } | |
894 } | |
895 | |
896 | |
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897 void LinkResolver::resolve_special_call(CallInfo& result, KlassHandle resolved_klass, Symbol* method_name, |
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898 Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS) { |
0 | 899 methodHandle resolved_method; |
900 linktime_resolve_special_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
901 runtime_resolve_special_method(result, resolved_method, resolved_klass, current_klass, check_access, CHECK); | |
902 } | |
903 | |
904 // throws linktime exceptions | |
905 void LinkResolver::linktime_resolve_special_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
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906 Symbol* method_name, Symbol* method_signature, |
0 | 907 KlassHandle current_klass, bool check_access, TRAPS) { |
908 | |
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909 // Invokespecial is called for multiple special reasons: |
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910 // <init> |
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911 // local private method invocation, for classes and interfaces |
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912 // superclass.method, which can also resolve to a default method |
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913 // and the selected method is recalculated relative to the direct superclass |
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914 // superinterface.method, which explicitly does not check shadowing |
6934 | 915 |
13413 | 916 if (!resolved_klass->is_interface()) { |
917 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, false, CHECK); | |
918 } else { | |
919 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, true, CHECK); | |
920 } | |
0 | 921 |
922 // check if method name is <init>, that it is found in same klass as static type | |
923 if (resolved_method->name() == vmSymbols::object_initializer_name() && | |
924 resolved_method->method_holder() != resolved_klass()) { | |
925 ResourceMark rm(THREAD); | |
926 Exceptions::fthrow( | |
927 THREAD_AND_LOCATION, | |
2177
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928 vmSymbols::java_lang_NoSuchMethodError(), |
0 | 929 "%s: method %s%s not found", |
930 resolved_klass->external_name(), | |
931 resolved_method->name()->as_C_string(), | |
932 resolved_method->signature()->as_C_string() | |
933 ); | |
934 return; | |
935 } | |
936 | |
13401
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937 // check if invokespecial's interface method reference is in an indirect superinterface |
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938 if (!current_klass.is_null() && resolved_klass->is_interface()) { |
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939 Klass *klass_to_check = !InstanceKlass::cast(current_klass())->is_anonymous() ? |
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940 current_klass() : |
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941 InstanceKlass::cast(current_klass())->host_klass(); |
13433
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942 // As of the fix for 4486457 we disable verification for all of the |
769557390c43
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943 // dynamically-generated bytecodes associated with the 1.4 |
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944 // reflection implementation, not just those associated with |
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945 // sun/reflect/SerializationConstructorAccessor. |
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946 bool is_reflect = JDK_Version::is_gte_jdk14x_version() && |
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947 UseNewReflection && |
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948 klass_to_check->is_subclass_of( |
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949 SystemDictionary::reflect_MagicAccessorImpl_klass()); |
13401
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950 |
13433
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951 if (!is_reflect && |
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952 !InstanceKlass::cast(klass_to_check)->is_same_or_direct_interface(resolved_klass())) { |
13401
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953 ResourceMark rm(THREAD); |
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954 char buf[200]; |
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955 jio_snprintf(buf, sizeof(buf), |
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956 "Interface method reference: %s, is in an indirect superinterface of %s", |
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957 Method::name_and_sig_as_C_string(resolved_klass(), |
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958 resolved_method->name(), |
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959 resolved_method->signature()), |
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960 current_klass->external_name()); |
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961 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
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962 } |
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|
963 } |
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|
964 |
0 | 965 // check if not static |
966 if (resolved_method->is_static()) { | |
3324
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967 ResourceMark rm(THREAD); |
0 | 968 char buf[200]; |
969 jio_snprintf(buf, sizeof(buf), | |
970 "Expecting non-static method %s", | |
6983 | 971 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 972 resolved_method->name(), |
973 resolved_method->signature())); | |
974 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
975 } | |
12823
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976 |
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977 if (TraceItables && Verbose) { |
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978 ResourceMark rm(THREAD); |
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979 tty->print("invokespecial resolved method: caller-class:%s, compile-time-class:%s, method:%s, method_holder:%s, access_flags: ", |
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980 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name()), |
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981 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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982 Method::name_and_sig_as_C_string(resolved_klass(), |
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983 resolved_method->name(), |
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984 resolved_method->signature()), |
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985 resolved_method->method_holder()->internal_name() |
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986 ); |
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987 resolved_method->access_flags().print_on(tty); |
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988 if (resolved_method->is_default_method()) { |
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989 tty->print("default "); |
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990 } |
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991 if (resolved_method->is_overpass()) { |
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992 tty->print("overpass"); |
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993 } |
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994 tty->cr(); |
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995 } |
0 | 996 } |
997 | |
998 // throws runtime exceptions | |
999 void LinkResolver::runtime_resolve_special_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, | |
1000 KlassHandle current_klass, bool check_access, TRAPS) { | |
1001 | |
1002 // resolved method is selected method unless we have an old-style lookup | |
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1003 // for a superclass method |
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1004 // Invokespecial for a superinterface, resolved method is selected method, |
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1005 // no checks for shadowing |
0 | 1006 methodHandle sel_method(THREAD, resolved_method()); |
1007 | |
1008 // check if this is an old-style super call and do a new lookup if so | |
1009 { KlassHandle method_klass = KlassHandle(THREAD, | |
1010 resolved_method->method_holder()); | |
1011 | |
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1012 if (check_access && |
0 | 1013 // a) check if ACC_SUPER flag is set for the current class |
8702 | 1014 (current_klass->is_super() || !AllowNonVirtualCalls) && |
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1015 // b) check if the class of the resolved_klass is a superclass |
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1016 // (not supertype in order to exclude interface classes) of the current class. |
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1017 // This check is not performed for super.invoke for interface methods |
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1018 // in super interfaces. |
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1019 current_klass->is_subclass_of(resolved_klass()) && |
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1020 current_klass() != resolved_klass() && |
0 | 1021 // c) check if the method is not <init> |
1022 resolved_method->name() != vmSymbols::object_initializer_name()) { | |
1023 // Lookup super method | |
1024 KlassHandle super_klass(THREAD, current_klass->super()); | |
1025 lookup_instance_method_in_klasses(sel_method, super_klass, | |
2177
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1026 resolved_method->name(), |
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|
1027 resolved_method->signature(), CHECK); |
0 | 1028 // check if found |
1029 if (sel_method.is_null()) { | |
1030 ResourceMark rm(THREAD); | |
1031 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1032 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1033 resolved_method->name(), |
1034 resolved_method->signature())); | |
1035 } | |
1036 } | |
1037 } | |
1038 | |
1039 // check if not static | |
1040 if (sel_method->is_static()) { | |
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1041 ResourceMark rm(THREAD); |
0 | 1042 char buf[200]; |
6983 | 1043 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1044 resolved_method->name(), |
1045 resolved_method->signature())); | |
1046 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
1047 } | |
1048 | |
1049 // check if abstract | |
1050 if (sel_method->is_abstract()) { | |
1051 ResourceMark rm(THREAD); | |
1052 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1053 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1054 sel_method->name(), |
1055 sel_method->signature())); | |
1056 } | |
1057 | |
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1058 if (TraceItables && Verbose) { |
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1059 ResourceMark rm(THREAD); |
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1060 tty->print("invokespecial selected method: resolved-class:%s, method:%s, method_holder:%s, access_flags: ", |
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1061 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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1062 Method::name_and_sig_as_C_string(resolved_klass(), |
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1063 sel_method->name(), |
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1064 sel_method->signature()), |
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1065 sel_method->method_holder()->internal_name() |
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1066 ); |
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1067 sel_method->access_flags().print_on(tty); |
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1068 if (sel_method->is_default_method()) { |
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1069 tty->print("default "); |
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|
1070 } |
12823
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1071 if (sel_method->is_overpass()) { |
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1072 tty->print("overpass"); |
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|
1073 } |
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|
1074 tty->cr(); |
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1075 } |
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|
1076 |
0 | 1077 // setup result |
1078 result.set_static(resolved_klass, sel_method, CHECK); | |
1079 } | |
1080 | |
1081 void LinkResolver::resolve_virtual_call(CallInfo& result, Handle recv, KlassHandle receiver_klass, KlassHandle resolved_klass, | |
2177
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1082 Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, |
0 | 1083 bool check_access, bool check_null_and_abstract, TRAPS) { |
1084 methodHandle resolved_method; | |
1085 linktime_resolve_virtual_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
1086 runtime_resolve_virtual_method(result, resolved_method, resolved_klass, recv, receiver_klass, check_null_and_abstract, CHECK); | |
1087 } | |
1088 | |
1089 // throws linktime exceptions | |
1090 void LinkResolver::linktime_resolve_virtual_method(methodHandle &resolved_method, KlassHandle resolved_klass, | |
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|
1091 Symbol* method_name, Symbol* method_signature, |
0 | 1092 KlassHandle current_klass, bool check_access, TRAPS) { |
1093 // normal method resolution | |
12858
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1094 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, true, CHECK); |
0 | 1095 |
1096 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); | |
1097 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); | |
1098 | |
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1099 // check if private interface method |
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1100 if (resolved_klass->is_interface() && resolved_method->is_private()) { |
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1101 ResourceMark rm(THREAD); |
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1102 char buf[200]; |
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1103 jio_snprintf(buf, sizeof(buf), "private interface method requires invokespecial, not invokevirtual: method %s, caller-class:%s", |
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1104 Method::name_and_sig_as_C_string(resolved_klass(), |
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1105 resolved_method->name(), |
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1106 resolved_method->signature()), |
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1107 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name())); |
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1108 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
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1109 } |
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1110 |
0 | 1111 // check if not static |
1112 if (resolved_method->is_static()) { | |
3324
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1113 ResourceMark rm(THREAD); |
0 | 1114 char buf[200]; |
6983 | 1115 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1116 resolved_method->name(), |
1117 resolved_method->signature())); | |
1118 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
1119 } | |
12318
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1120 |
12823
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1121 if (PrintVtables && Verbose) { |
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1122 ResourceMark rm(THREAD); |
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1123 tty->print("invokevirtual resolved method: caller-class:%s, compile-time-class:%s, method:%s, method_holder:%s, access_flags: ", |
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1124 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name()), |
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1125 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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1126 Method::name_and_sig_as_C_string(resolved_klass(), |
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1127 resolved_method->name(), |
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1128 resolved_method->signature()), |
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1129 resolved_method->method_holder()->internal_name() |
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1130 ); |
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1131 resolved_method->access_flags().print_on(tty); |
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1132 if (resolved_method->is_default_method()) { |
13055
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1133 tty->print("default "); |
12823
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1134 } |
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1135 if (resolved_method->is_overpass()) { |
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1136 tty->print("overpass"); |
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|
1137 } |
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1138 tty->cr(); |
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|
1139 } |
0 | 1140 } |
1141 | |
1142 // throws runtime exceptions | |
1143 void LinkResolver::runtime_resolve_virtual_method(CallInfo& result, | |
1144 methodHandle resolved_method, | |
1145 KlassHandle resolved_klass, | |
1146 Handle recv, | |
1147 KlassHandle recv_klass, | |
1148 bool check_null_and_abstract, | |
1149 TRAPS) { | |
1150 | |
1151 // setup default return values | |
6725
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1152 int vtable_index = Method::invalid_vtable_index; |
0 | 1153 methodHandle selected_method; |
1154 | |
1155 assert(recv.is_null() || recv->is_oop(), "receiver is not an oop"); | |
1156 | |
1157 // runtime method resolution | |
1158 if (check_null_and_abstract && recv.is_null()) { // check if receiver exists | |
1159 THROW(vmSymbols::java_lang_NullPointerException()); | |
1160 } | |
1161 | |
6725
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1162 // Virtual methods cannot be resolved before its klass has been linked, for otherwise the Method*'s |
0 | 1163 // has not been rewritten, and the vtable initialized. Make sure to do this after the nullcheck, since |
1164 // a missing receiver might result in a bogus lookup. | |
6940
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
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|
1165 assert(resolved_method->method_holder()->is_linked(), "must be linked"); |
0 | 1166 |
1167 // do lookup based on receiver klass using the vtable index | |
6725
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1168 if (resolved_method->method_holder()->is_interface()) { // miranda method |
12823
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1169 vtable_index = vtable_index_of_interface_method(resolved_klass, |
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|
1170 resolved_method); |
0 | 1171 assert(vtable_index >= 0 , "we should have valid vtable index at this point"); |
1172 | |
6725
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|
1173 InstanceKlass* inst = InstanceKlass::cast(recv_klass()); |
0 | 1174 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); |
1175 } else { | |
1176 // at this point we are sure that resolved_method is virtual and not | |
1177 // a miranda method; therefore, it must have a valid vtable index. | |
12264
b2e698d2276c
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|
1178 assert(!resolved_method->has_itable_index(), ""); |
0 | 1179 vtable_index = resolved_method->vtable_index(); |
1180 // We could get a negative vtable_index for final methods, | |
1181 // because as an optimization they are they are never put in the vtable, | |
1182 // unless they override an existing method. | |
1183 // If we do get a negative, it means the resolved method is the the selected | |
1184 // method, and it can never be changed by an override. | |
6725
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|
1185 if (vtable_index == Method::nonvirtual_vtable_index) { |
0 | 1186 assert(resolved_method->can_be_statically_bound(), "cannot override this method"); |
1187 selected_method = resolved_method; | |
1188 } else { | |
1189 // recv_klass might be an arrayKlassOop but all vtables start at | |
1190 // the same place. The cast is to avoid virtual call and assertion. | |
6725
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|
1191 InstanceKlass* inst = (InstanceKlass*)recv_klass(); |
0 | 1192 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); |
1193 } | |
1194 } | |
1195 | |
1196 // check if method exists | |
1197 if (selected_method.is_null()) { | |
1198 ResourceMark rm(THREAD); | |
1199 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1200 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1201 resolved_method->name(), |
1202 resolved_method->signature())); | |
1203 } | |
1204 | |
1205 // check if abstract | |
1206 if (check_null_and_abstract && selected_method->is_abstract()) { | |
1207 ResourceMark rm(THREAD); | |
1208 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1209 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1210 selected_method->name(), |
1211 selected_method->signature())); | |
1212 } | |
1213 | |
12318
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|
1214 if (PrintVtables && Verbose) { |
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1215 ResourceMark rm(THREAD); |
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|
1216 tty->print("invokevirtual selected method: receiver-class:%s, resolved-class:%s, method:%s, method_holder:%s, vtable_index:%d, access_flags: ", |
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1217 (recv_klass.is_null() ? "<NULL>" : recv_klass->internal_name()), |
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1218 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1219 Method::name_and_sig_as_C_string(resolved_klass(), |
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|
1220 resolved_method->name(), |
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1221 resolved_method->signature()), |
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1222 selected_method->method_holder()->internal_name(), |
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diff
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|
1223 vtable_index |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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diff
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|
1224 ); |
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1225 selected_method->access_flags().print_on(tty); |
12823
ac9cb1d5a202
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acorn
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diff
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|
1226 if (selected_method->is_default_method()) { |
13055
fce21ac5968d
8027229: ICCE expected for >=2 maximally specific default methods.
acorn
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12945
diff
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|
1227 tty->print("default "); |
12318
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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parents:
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|
1228 } |
12823
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8009130: Lambda: Fix access controls, loader constraints.
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parents:
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diff
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|
1229 if (selected_method->is_overpass()) { |
12318
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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parents:
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diff
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|
1230 tty->print("overpass"); |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
parents:
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diff
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|
1231 } |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
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diff
changeset
|
1232 tty->cr(); |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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diff
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|
1233 } |
0 | 1234 // setup result |
1235 result.set_virtual(resolved_klass, recv_klass, resolved_method, selected_method, vtable_index, CHECK); | |
1236 } | |
1237 | |
1238 void LinkResolver::resolve_interface_call(CallInfo& result, Handle recv, KlassHandle recv_klass, KlassHandle resolved_klass, | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
1239 Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, |
0 | 1240 bool check_access, bool check_null_and_abstract, TRAPS) { |
1241 methodHandle resolved_method; | |
1242 linktime_resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
1243 runtime_resolve_interface_method(result, resolved_method, resolved_klass, recv, recv_klass, check_null_and_abstract, CHECK); | |
1244 } | |
1245 | |
1246 // throws linktime exceptions | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
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diff
changeset
|
1247 void LinkResolver::linktime_resolve_interface_method(methodHandle& resolved_method, KlassHandle resolved_klass, Symbol* method_name, |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
1248 Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS) { |
0 | 1249 // normal interface method resolution |
13413 | 1250 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, true, CHECK); |
0 | 1251 |
1252 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); | |
1253 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); | |
1254 } | |
1255 | |
1256 // throws runtime exceptions | |
1257 void LinkResolver::runtime_resolve_interface_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, | |
1258 Handle recv, KlassHandle recv_klass, bool check_null_and_abstract, TRAPS) { | |
1259 // check if receiver exists | |
1260 if (check_null_and_abstract && recv.is_null()) { | |
1261 THROW(vmSymbols::java_lang_NullPointerException()); | |
1262 } | |
1263 | |
12318
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
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diff
changeset
|
1264 // check if private interface method |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1265 if (resolved_klass->is_interface() && resolved_method->is_private()) { |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
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diff
changeset
|
1266 ResourceMark rm(THREAD); |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
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diff
changeset
|
1267 char buf[200]; |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
parents:
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diff
changeset
|
1268 jio_snprintf(buf, sizeof(buf), "private interface method requires invokespecial, not invokeinterface: method %s", |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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diff
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|
1269 Method::name_and_sig_as_C_string(resolved_klass(), |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
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diff
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|
1270 resolved_method->name(), |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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diff
changeset
|
1271 resolved_method->signature())); |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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diff
changeset
|
1272 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
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diff
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|
1273 } |
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1274 |
0 | 1275 // check if receiver klass implements the resolved interface |
1276 if (!recv_klass->is_subtype_of(resolved_klass())) { | |
3324
acf5e660c71a
6728025: LinkResolver is missing some ResourceMarks
jcoomes
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2460
diff
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|
1277 ResourceMark rm(THREAD); |
0 | 1278 char buf[200]; |
1279 jio_snprintf(buf, sizeof(buf), "Class %s does not implement the requested interface %s", | |
6983 | 1280 recv_klass()->external_name(), |
1281 resolved_klass()->external_name()); | |
0 | 1282 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
1283 } | |
14221
2353011244bd
8027804: JCK resolveMethod test fails expecting AbstractMethodError
hseigel
parents:
13436
diff
changeset
|
1284 |
0 | 1285 // do lookup based on receiver klass |
1286 methodHandle sel_method; | |
14221
2353011244bd
8027804: JCK resolveMethod test fails expecting AbstractMethodError
hseigel
parents:
13436
diff
changeset
|
1287 // This search must match the linktime preparation search for itable initialization |
2353011244bd
8027804: JCK resolveMethod test fails expecting AbstractMethodError
hseigel
parents:
13436
diff
changeset
|
1288 // to correctly enforce loader constraints for interface method inheritance |
0 | 1289 lookup_instance_method_in_klasses(sel_method, recv_klass, |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
1290 resolved_method->name(), |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
1291 resolved_method->signature(), CHECK); |
12264
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
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diff
changeset
|
1292 if (sel_method.is_null() && !check_null_and_abstract) { |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
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diff
changeset
|
1293 // In theory this is a harmless placeholder value, but |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
10128
diff
changeset
|
1294 // in practice leaving in null affects the nsk default method tests. |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
10128
diff
changeset
|
1295 // This needs further study. |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
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diff
changeset
|
1296 sel_method = resolved_method; |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
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diff
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|
1297 } |
0 | 1298 // check if method exists |
1299 if (sel_method.is_null()) { | |
1300 ResourceMark rm(THREAD); | |
1301 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1302 Method::name_and_sig_as_C_string(recv_klass(), |
0 | 1303 resolved_method->name(), |
1304 resolved_method->signature())); | |
1305 } | |
10128
41ed397cc0cd
8006267: InterfaceMethod_ref should allow invokestatic and invokespecial
bharadwaj
parents:
9082
diff
changeset
|
1306 // check access |
12318
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|
1307 // Throw Illegal Access Error if sel_method is not public. |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1308 if (!sel_method->is_public()) { |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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changeset
|
1309 ResourceMark rm(THREAD); |
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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changeset
|
1310 THROW_MSG(vmSymbols::java_lang_IllegalAccessError(), |
36b97be47bde
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diff
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|
1311 Method::name_and_sig_as_C_string(recv_klass(), |
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1312 sel_method->name(), |
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1313 sel_method->signature())); |
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|
1314 } |
0 | 1315 // check if abstract |
1316 if (check_null_and_abstract && sel_method->is_abstract()) { | |
1317 ResourceMark rm(THREAD); | |
1318 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1319 Method::name_and_sig_as_C_string(recv_klass(), |
0 | 1320 sel_method->name(), |
1321 sel_method->signature())); | |
1322 } | |
12318
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|
1323 |
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1324 if (TraceItables && Verbose) { |
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|
1325 ResourceMark rm(THREAD); |
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|
1326 tty->print("invokeinterface selected method: receiver-class:%s, resolved-class:%s, method:%s, method_holder:%s, access_flags: ", |
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|
1327 (recv_klass.is_null() ? "<NULL>" : recv_klass->internal_name()), |
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|
1328 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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1329 Method::name_and_sig_as_C_string(resolved_klass(), |
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1330 resolved_method->name(), |
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|
1331 resolved_method->signature()), |
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|
1332 sel_method->method_holder()->internal_name() |
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|
1333 ); |
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|
1334 sel_method->access_flags().print_on(tty); |
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1335 if (sel_method->is_default_method()) { |
13055
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1336 tty->print("default "); |
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1337 } |
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1338 if (sel_method->is_overpass()) { |
12318
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|
1339 tty->print("overpass"); |
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|
1340 } |
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|
1341 tty->cr(); |
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|
1342 } |
13055
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|
1343 // setup result |
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|
1344 if (!resolved_method->has_itable_index()) { |
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1345 int vtable_index = resolved_method->vtable_index(); |
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1346 assert(vtable_index == sel_method->vtable_index(), "sanity check"); |
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1347 result.set_virtual(resolved_klass, recv_klass, resolved_method, sel_method, vtable_index, CHECK); |
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|
1348 } else { |
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|
1349 int itable_index = resolved_method()->itable_index(); |
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|
1350 result.set_interface(resolved_klass, recv_klass, resolved_method, sel_method, itable_index, CHECK); |
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1351 } |
0 | 1352 } |
1353 | |
1354 | |
1355 methodHandle LinkResolver::linktime_resolve_interface_method_or_null( | |
1356 KlassHandle resolved_klass, | |
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1357 Symbol* method_name, |
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1358 Symbol* method_signature, |
0 | 1359 KlassHandle current_klass, |
1360 bool check_access) { | |
1361 EXCEPTION_MARK; | |
1362 methodHandle method_result; | |
1363 linktime_resolve_interface_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); | |
1364 if (HAS_PENDING_EXCEPTION) { | |
1365 CLEAR_PENDING_EXCEPTION; | |
1366 return methodHandle(); | |
1367 } else { | |
1368 return method_result; | |
1369 } | |
1370 } | |
1371 | |
1372 methodHandle LinkResolver::linktime_resolve_virtual_method_or_null( | |
1373 KlassHandle resolved_klass, | |
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1374 Symbol* method_name, |
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|
1375 Symbol* method_signature, |
0 | 1376 KlassHandle current_klass, |
1377 bool check_access) { | |
1378 EXCEPTION_MARK; | |
1379 methodHandle method_result; | |
1380 linktime_resolve_virtual_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); | |
1381 if (HAS_PENDING_EXCEPTION) { | |
1382 CLEAR_PENDING_EXCEPTION; | |
1383 return methodHandle(); | |
1384 } else { | |
1385 return method_result; | |
1386 } | |
1387 } | |
1388 | |
1389 methodHandle LinkResolver::resolve_virtual_call_or_null( | |
1390 KlassHandle receiver_klass, | |
1391 KlassHandle resolved_klass, | |
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|
1392 Symbol* name, |
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|
1393 Symbol* signature, |
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|
1394 KlassHandle current_klass, |
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|
1395 bool check_access) { |
0 | 1396 EXCEPTION_MARK; |
1397 CallInfo info; | |
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1398 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, check_access, false, THREAD); |
0 | 1399 if (HAS_PENDING_EXCEPTION) { |
1400 CLEAR_PENDING_EXCEPTION; | |
1401 return methodHandle(); | |
1402 } | |
1403 return info.selected_method(); | |
1404 } | |
1405 | |
1406 methodHandle LinkResolver::resolve_interface_call_or_null( | |
1407 KlassHandle receiver_klass, | |
1408 KlassHandle resolved_klass, | |
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1409 Symbol* name, |
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|
1410 Symbol* signature, |
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|
1411 KlassHandle current_klass, |
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|
1412 bool check_access) { |
0 | 1413 EXCEPTION_MARK; |
1414 CallInfo info; | |
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1415 resolve_interface_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, check_access, false, THREAD); |
0 | 1416 if (HAS_PENDING_EXCEPTION) { |
1417 CLEAR_PENDING_EXCEPTION; | |
1418 return methodHandle(); | |
1419 } | |
1420 return info.selected_method(); | |
1421 } | |
1422 | |
1423 int LinkResolver::resolve_virtual_vtable_index( | |
1424 KlassHandle receiver_klass, | |
1425 KlassHandle resolved_klass, | |
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1426 Symbol* name, |
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|
1427 Symbol* signature, |
0 | 1428 KlassHandle current_klass) { |
1429 EXCEPTION_MARK; | |
1430 CallInfo info; | |
1431 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1432 if (HAS_PENDING_EXCEPTION) { | |
1433 CLEAR_PENDING_EXCEPTION; | |
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1434 return Method::invalid_vtable_index; |
0 | 1435 } |
1436 return info.vtable_index(); | |
1437 } | |
1438 | |
1439 methodHandle LinkResolver::resolve_static_call_or_null( | |
1440 KlassHandle resolved_klass, | |
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|
1441 Symbol* name, |
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|
1442 Symbol* signature, |
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|
1443 KlassHandle current_klass, |
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|
1444 bool check_access) { |
0 | 1445 EXCEPTION_MARK; |
1446 CallInfo info; | |
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|
1447 resolve_static_call(info, resolved_klass, name, signature, current_klass, check_access, false, THREAD); |
0 | 1448 if (HAS_PENDING_EXCEPTION) { |
1449 CLEAR_PENDING_EXCEPTION; | |
1450 return methodHandle(); | |
1451 } | |
1452 return info.selected_method(); | |
1453 } | |
1454 | |
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1455 methodHandle LinkResolver::resolve_special_call_or_null( |
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|
1456 KlassHandle resolved_klass, |
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|
1457 Symbol* name, |
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|
1458 Symbol* signature, |
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|
1459 KlassHandle current_klass, |
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|
1460 bool check_access) { |
0 | 1461 EXCEPTION_MARK; |
1462 CallInfo info; | |
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|
1463 resolve_special_call(info, resolved_klass, name, signature, current_klass, check_access, THREAD); |
0 | 1464 if (HAS_PENDING_EXCEPTION) { |
1465 CLEAR_PENDING_EXCEPTION; | |
1466 return methodHandle(); | |
1467 } | |
1468 return info.selected_method(); | |
1469 } | |
1470 | |
1471 | |
1472 | |
1473 //------------------------------------------------------------------------------------------------------------------------ | |
1474 // ConstantPool entries | |
1475 | |
1476 void LinkResolver::resolve_invoke(CallInfo& result, Handle recv, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS) { | |
1477 switch (byte) { | |
1478 case Bytecodes::_invokestatic : resolve_invokestatic (result, pool, index, CHECK); break; | |
1479 case Bytecodes::_invokespecial : resolve_invokespecial (result, pool, index, CHECK); break; | |
1480 case Bytecodes::_invokevirtual : resolve_invokevirtual (result, recv, pool, index, CHECK); break; | |
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1481 case Bytecodes::_invokehandle : resolve_invokehandle (result, pool, index, CHECK); break; |
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|
1482 case Bytecodes::_invokedynamic : resolve_invokedynamic (result, pool, index, CHECK); break; |
0 | 1483 case Bytecodes::_invokeinterface: resolve_invokeinterface(result, recv, pool, index, CHECK); break; |
1484 } | |
1485 return; | |
1486 } | |
1487 | |
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1488 void LinkResolver::resolve_pool(KlassHandle& resolved_klass, Symbol*& method_name, Symbol*& method_signature, |
0 | 1489 KlassHandle& current_klass, constantPoolHandle pool, int index, TRAPS) { |
1490 // resolve klass | |
1491 resolve_klass(resolved_klass, pool, index, CHECK); | |
1492 | |
1493 // Get name, signature, and static klass | |
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1494 method_name = pool->name_ref_at(index); |
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|
1495 method_signature = pool->signature_ref_at(index); |
0 | 1496 current_klass = KlassHandle(THREAD, pool->pool_holder()); |
1497 } | |
1498 | |
1499 | |
1500 void LinkResolver::resolve_invokestatic(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { | |
1501 KlassHandle resolved_klass; | |
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1502 Symbol* method_name = NULL; |
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1503 Symbol* method_signature = NULL; |
0 | 1504 KlassHandle current_klass; |
1505 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
1506 resolve_static_call(result, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); | |
1507 } | |
1508 | |
1509 | |
1510 void LinkResolver::resolve_invokespecial(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { | |
1511 KlassHandle resolved_klass; | |
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1512 Symbol* method_name = NULL; |
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1513 Symbol* method_signature = NULL; |
0 | 1514 KlassHandle current_klass; |
1515 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
1516 resolve_special_call(result, resolved_klass, method_name, method_signature, current_klass, true, CHECK); | |
1517 } | |
1518 | |
1519 | |
1520 void LinkResolver::resolve_invokevirtual(CallInfo& result, Handle recv, | |
1521 constantPoolHandle pool, int index, | |
1522 TRAPS) { | |
1523 | |
1524 KlassHandle resolved_klass; | |
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1525 Symbol* method_name = NULL; |
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1526 Symbol* method_signature = NULL; |
0 | 1527 KlassHandle current_klass; |
1528 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
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1529 KlassHandle recvrKlass (THREAD, recv.is_null() ? (Klass*)NULL : recv->klass()); |
0 | 1530 resolve_virtual_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
1531 } | |
1532 | |
1533 | |
1534 void LinkResolver::resolve_invokeinterface(CallInfo& result, Handle recv, constantPoolHandle pool, int index, TRAPS) { | |
1535 KlassHandle resolved_klass; | |
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1536 Symbol* method_name = NULL; |
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1537 Symbol* method_signature = NULL; |
0 | 1538 KlassHandle current_klass; |
1539 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
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1540 KlassHandle recvrKlass (THREAD, recv.is_null() ? (Klass*)NULL : recv->klass()); |
0 | 1541 resolve_interface_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
1542 } | |
1543 | |
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1544 |
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1545 void LinkResolver::resolve_invokehandle(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { |
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|
1546 assert(EnableInvokeDynamic, ""); |
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|
1547 // This guy is reached from InterpreterRuntime::resolve_invokehandle. |
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1548 KlassHandle resolved_klass; |
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|
1549 Symbol* method_name = NULL; |
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1550 Symbol* method_signature = NULL; |
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|
1551 KlassHandle current_klass; |
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|
1552 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); |
9082 | 1553 if (TraceMethodHandles) { |
1554 ResourceMark rm(THREAD); | |
6266
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1555 tty->print_cr("resolve_invokehandle %s %s", method_name->as_C_string(), method_signature->as_C_string()); |
9082 | 1556 } |
6266
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1557 resolve_handle_call(result, resolved_klass, method_name, method_signature, current_klass, CHECK); |
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|
1558 } |
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|
1559 |
6266
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|
1560 void LinkResolver::resolve_handle_call(CallInfo& result, KlassHandle resolved_klass, |
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|
1561 Symbol* method_name, Symbol* method_signature, |
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|
1562 KlassHandle current_klass, |
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|
1563 TRAPS) { |
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|
1564 // JSR 292: this must be an implicitly generated method MethodHandle.invokeExact(*...) or similar |
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|
1565 assert(resolved_klass() == SystemDictionary::MethodHandle_klass(), ""); |
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|
1566 assert(MethodHandles::is_signature_polymorphic_name(method_name), ""); |
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|
1567 methodHandle resolved_method; |
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|
1568 Handle resolved_appendix; |
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|
1569 Handle resolved_method_type; |
6266
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1570 lookup_polymorphic_method(resolved_method, resolved_klass, |
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|
1571 method_name, method_signature, |
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1572 current_klass, &resolved_appendix, &resolved_method_type, CHECK); |
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1573 result.set_handle(resolved_method, resolved_appendix, resolved_method_type, CHECK); |
6266
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|
1574 } |
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|
1575 |
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|
1576 static void wrap_invokedynamic_exception(TRAPS) { |
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|
1577 if (HAS_PENDING_EXCEPTION) { |
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|
1578 if (TraceMethodHandles) { |
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|
1579 tty->print_cr("invokedynamic throws BSME for " INTPTR_FORMAT, p2i((void *)PENDING_EXCEPTION)); |
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|
1580 PENDING_EXCEPTION->print(); |
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|
1581 } |
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|
1582 if (PENDING_EXCEPTION->is_a(SystemDictionary::BootstrapMethodError_klass())) { |
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|
1583 // throw these guys, since they are already wrapped |
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|
1584 return; |
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|
1585 } |
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|
1586 if (!PENDING_EXCEPTION->is_a(SystemDictionary::LinkageError_klass())) { |
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|
1587 // intercept only LinkageErrors which might have failed to wrap |
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|
1588 return; |
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|
1589 } |
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|
1590 // See the "Linking Exceptions" section for the invokedynamic instruction in the JVMS. |
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|
1591 Handle nested_exception(THREAD, PENDING_EXCEPTION); |
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|
1592 CLEAR_PENDING_EXCEPTION; |
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|
1593 THROW_CAUSE(vmSymbols::java_lang_BootstrapMethodError(), nested_exception) |
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|
1594 } |
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|
1595 } |
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|
1596 |
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|
1597 void LinkResolver::resolve_invokedynamic(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { |
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|
1598 assert(EnableInvokeDynamic, ""); |
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|
1599 |
6822
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1600 //resolve_pool(<resolved_klass>, method_name, method_signature, current_klass, pool, index, CHECK); |
6266
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1601 Symbol* method_name = pool->name_ref_at(index); |
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|
1602 Symbol* method_signature = pool->signature_ref_at(index); |
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|
1603 KlassHandle current_klass = KlassHandle(THREAD, pool->pool_holder()); |
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|
1604 |
6266
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|
1605 // Resolve the bootstrap specifier (BSM + optional arguments). |
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|
1606 Handle bootstrap_specifier; |
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changeset
|
1607 // Check if CallSite has been bound already: |
6725
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|
1608 ConstantPoolCacheEntry* cpce = pool->invokedynamic_cp_cache_entry_at(index); |
6266
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|
1609 if (cpce->is_f1_null()) { |
6725
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|
1610 int pool_index = cpce->constant_pool_index(); |
23061
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|
1611 oop bsm_info = pool->resolve_bootstrap_specifier_at(pool_index, THREAD); |
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|
1612 wrap_invokedynamic_exception(CHECK); |
6266
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|
1613 assert(bsm_info != NULL, ""); |
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|
1614 // FIXME: Cache this once per BootstrapMethods entry, not once per CONSTANT_InvokeDynamic. |
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|
1615 bootstrap_specifier = Handle(THREAD, bsm_info); |
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|
1616 } |
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|
1617 if (!cpce->is_f1_null()) { |
6822
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|
1618 methodHandle method( THREAD, cpce->f1_as_method()); |
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|
1619 Handle appendix( THREAD, cpce->appendix_if_resolved(pool)); |
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|
1620 Handle method_type(THREAD, cpce->method_type_if_resolved(pool)); |
23061
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|
1621 result.set_handle(method, appendix, method_type, THREAD); |
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|
1622 wrap_invokedynamic_exception(CHECK); |
6266
1d7922586cf6
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|
1623 return; |
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|
1624 } |
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|
1625 |
6266
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|
1626 if (TraceMethodHandles) { |
12264
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|
1627 ResourceMark rm(THREAD); |
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|
1628 tty->print_cr("resolve_invokedynamic #%d %s %s", |
6725
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|
1629 ConstantPool::decode_invokedynamic_index(index), |
6266
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|
1630 method_name->as_C_string(), method_signature->as_C_string()); |
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|
1631 tty->print(" BSM info: "); bootstrap_specifier->print(); |
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|
1632 } |
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|
1633 |
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|
1634 resolve_dynamic_call(result, bootstrap_specifier, method_name, method_signature, current_klass, CHECK); |
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|
1635 } |
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|
1636 |
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|
1637 void LinkResolver::resolve_dynamic_call(CallInfo& result, |
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changeset
|
1638 Handle bootstrap_specifier, |
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diff
changeset
|
1639 Symbol* method_name, Symbol* method_signature, |
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changeset
|
1640 KlassHandle current_klass, |
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|
1641 TRAPS) { |
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changeset
|
1642 // JSR 292: this must resolve to an implicitly generated method MH.linkToCallSite(*...) |
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|
1643 // The appendix argument is likely to be a freshly-created CallSite. |
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|
1644 Handle resolved_appendix; |
6822
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|
1645 Handle resolved_method_type; |
6266
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|
1646 methodHandle resolved_method = |
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|
1647 SystemDictionary::find_dynamic_call_site_invoker(current_klass, |
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changeset
|
1648 bootstrap_specifier, |
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3960
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changeset
|
1649 method_name, method_signature, |
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|
1650 &resolved_appendix, |
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|
1651 &resolved_method_type, |
6729
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6725
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changeset
|
1652 THREAD); |
23061
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|
1653 wrap_invokedynamic_exception(CHECK); |
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diff
changeset
|
1654 result.set_handle(resolved_method, resolved_appendix, resolved_method_type, THREAD); |
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|
1655 wrap_invokedynamic_exception(CHECK); |
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|
1656 } |
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|
1657 |
0 | 1658 //------------------------------------------------------------------------------------------------------------------------ |
1659 #ifndef PRODUCT | |
1660 | |
12264
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|
1661 void CallInfo::print() { |
0 | 1662 ResourceMark rm; |
12264
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|
1663 const char* kindstr = "unknown"; |
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|
1664 switch (_call_kind) { |
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|
1665 case direct_call: kindstr = "direct"; break; |
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|
1666 case vtable_call: kindstr = "vtable"; break; |
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diff
changeset
|
1667 case itable_call: kindstr = "itable"; break; |
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changeset
|
1668 } |
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|
1669 tty->print_cr("Call %s@%d %s", kindstr, _call_index, |
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|
1670 _resolved_method.is_null() ? "(none)" : _resolved_method->name_and_sig_as_C_string()); |
0 | 1671 } |
1672 | |
1673 #endif |