Mercurial > hg > graal-jvmci-8
annotate src/share/vm/interpreter/linkResolver.cpp @ 12890:8f4bb1773fd9
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author | iveresov |
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date | Thu, 17 Oct 2013 10:58:45 -0700 |
parents | 2f8728d92483 8df6f123d35e |
children | ee99e1a7c5fb |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
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3 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
5 * | |
6 * This code is free software; you can redistribute it and/or modify it | |
7 * under the terms of the GNU General Public License version 2 only, as | |
8 * published by the Free Software Foundation. | |
9 * | |
10 * This code is distributed in the hope that it will be useful, but WITHOUT | |
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
13 * version 2 for more details (a copy is included in the LICENSE file that | |
14 * accompanied this code). | |
15 * | |
16 * You should have received a copy of the GNU General Public License version | |
17 * 2 along with this work; if not, write to the Free Software Foundation, | |
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
19 * | |
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20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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21 * or visit www.oracle.com if you need additional information or have any |
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22 * questions. |
0 | 23 * |
24 */ | |
25 | |
1972 | 26 #include "precompiled.hpp" |
6934 | 27 #include "classfile/defaultMethods.hpp" |
1972 | 28 #include "classfile/systemDictionary.hpp" |
29 #include "classfile/vmSymbols.hpp" | |
30 #include "compiler/compileBroker.hpp" | |
31 #include "gc_interface/collectedHeap.inline.hpp" | |
32 #include "interpreter/bytecode.hpp" | |
33 #include "interpreter/interpreterRuntime.hpp" | |
34 #include "interpreter/linkResolver.hpp" | |
35 #include "memory/resourceArea.hpp" | |
36 #include "memory/universe.inline.hpp" | |
37 #include "oops/instanceKlass.hpp" | |
38 #include "oops/objArrayOop.hpp" | |
39 #include "prims/methodHandles.hpp" | |
40 #include "prims/nativeLookup.hpp" | |
41 #include "runtime/compilationPolicy.hpp" | |
42 #include "runtime/fieldDescriptor.hpp" | |
43 #include "runtime/frame.inline.hpp" | |
44 #include "runtime/handles.inline.hpp" | |
45 #include "runtime/reflection.hpp" | |
46 #include "runtime/signature.hpp" | |
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47 #include "runtime/thread.inline.hpp" |
1972 | 48 #include "runtime/vmThread.hpp" |
0 | 49 |
50 | |
51 //------------------------------------------------------------------------------------------------------------------------ | |
52 // Implementation of CallInfo | |
53 | |
54 | |
55 void CallInfo::set_static(KlassHandle resolved_klass, methodHandle resolved_method, TRAPS) { | |
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56 int vtable_index = Method::nonvirtual_vtable_index; |
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57 set_common(resolved_klass, resolved_klass, resolved_method, resolved_method, CallInfo::direct_call, vtable_index, CHECK); |
0 | 58 } |
59 | |
60 | |
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61 void CallInfo::set_interface(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int itable_index, TRAPS) { |
0 | 62 // This is only called for interface methods. If the resolved_method |
63 // comes from java/lang/Object, it can be the subject of a virtual call, so | |
64 // we should pick the vtable index from the resolved method. | |
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65 // In that case, the caller must call set_virtual instead of set_interface. |
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66 assert(resolved_method->method_holder()->is_interface(), ""); |
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67 assert(itable_index == resolved_method()->itable_index(), ""); |
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68 set_common(resolved_klass, selected_klass, resolved_method, selected_method, CallInfo::itable_call, itable_index, CHECK); |
0 | 69 } |
70 | |
71 void CallInfo::set_virtual(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index, TRAPS) { | |
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72 assert(vtable_index >= 0 || vtable_index == Method::nonvirtual_vtable_index, "valid index"); |
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73 assert(vtable_index < 0 || !resolved_method->has_vtable_index() || vtable_index == resolved_method->vtable_index(), ""); |
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74 CallKind kind = (vtable_index >= 0 && !resolved_method->can_be_statically_bound() ? CallInfo::vtable_call : CallInfo::direct_call); |
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75 set_common(resolved_klass, selected_klass, resolved_method, selected_method, kind, vtable_index, CHECK); |
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76 assert(!resolved_method->is_compiled_lambda_form(), "these must be handled via an invokehandle call"); |
0 | 77 } |
78 | |
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79 void CallInfo::set_handle(methodHandle resolved_method, Handle resolved_appendix, Handle resolved_method_type, TRAPS) { |
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80 if (resolved_method.is_null()) { |
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81 THROW_MSG(vmSymbols::java_lang_InternalError(), "resolved method is null"); |
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82 } |
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83 KlassHandle resolved_klass = SystemDictionary::MethodHandle_klass(); |
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84 assert(resolved_method->intrinsic_id() == vmIntrinsics::_invokeBasic || |
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85 resolved_method->is_compiled_lambda_form(), |
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86 "linkMethod must return one of these"); |
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87 int vtable_index = Method::nonvirtual_vtable_index; |
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88 assert(!resolved_method->has_vtable_index(), ""); |
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89 set_common(resolved_klass, resolved_klass, resolved_method, resolved_method, CallInfo::direct_call, vtable_index, CHECK); |
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90 _resolved_appendix = resolved_appendix; |
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91 _resolved_method_type = resolved_method_type; |
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92 } |
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93 |
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94 void CallInfo::set_common(KlassHandle resolved_klass, |
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95 KlassHandle selected_klass, |
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96 methodHandle resolved_method, |
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97 methodHandle selected_method, |
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98 CallKind kind, |
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99 int index, |
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100 TRAPS) { |
0 | 101 assert(resolved_method->signature() == selected_method->signature(), "signatures must correspond"); |
102 _resolved_klass = resolved_klass; | |
103 _selected_klass = selected_klass; | |
104 _resolved_method = resolved_method; | |
105 _selected_method = selected_method; | |
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106 _call_kind = kind; |
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107 _call_index = index; |
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108 _resolved_appendix = Handle(); |
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109 DEBUG_ONLY(verify()); // verify before making side effects |
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110 |
1783 | 111 if (CompilationPolicy::must_be_compiled(selected_method)) { |
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112 // This path is unusual, mostly used by the '-Xcomp' stress test mode. |
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113 |
1783 | 114 // Note: with several active threads, the must_be_compiled may be true |
115 // while can_be_compiled is false; remove assert | |
116 // assert(CompilationPolicy::can_be_compiled(selected_method), "cannot compile"); | |
0 | 117 if (THREAD->is_Compiler_thread()) { |
118 // don't force compilation, resolve was on behalf of compiler | |
119 return; | |
120 } | |
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121 if (selected_method->method_holder()->is_not_initialized()) { |
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122 // 'is_not_initialized' means not only '!is_initialized', but also that |
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123 // initialization has not been started yet ('!being_initialized') |
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124 // Do not force compilation of methods in uninitialized classes. |
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125 // Note that doing this would throw an assert later, |
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126 // in CompileBroker::compile_method. |
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127 // We sometimes use the link resolver to do reflective lookups |
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128 // even before classes are initialized. |
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129 return; |
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130 } |
0 | 131 CompileBroker::compile_method(selected_method, InvocationEntryBci, |
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132 CompilationPolicy::policy()->initial_compile_level(), |
1783 | 133 methodHandle(), 0, "must_be_compiled", CHECK); |
0 | 134 } |
135 } | |
136 | |
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137 // utility query for unreflecting a method |
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138 CallInfo::CallInfo(Method* resolved_method, Klass* resolved_klass) { |
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139 Klass* resolved_method_holder = resolved_method->method_holder(); |
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140 if (resolved_klass == NULL) { // 2nd argument defaults to holder of 1st |
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141 resolved_klass = resolved_method_holder; |
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142 } |
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143 _resolved_klass = resolved_klass; |
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144 _selected_klass = resolved_klass; |
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145 _resolved_method = resolved_method; |
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146 _selected_method = resolved_method; |
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147 // classify: |
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148 CallKind kind = CallInfo::unknown_kind; |
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149 int index = resolved_method->vtable_index(); |
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150 if (resolved_method->can_be_statically_bound()) { |
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151 kind = CallInfo::direct_call; |
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152 } else if (!resolved_method_holder->is_interface()) { |
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153 // Could be an Object method inherited into an interface, but still a vtable call. |
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154 kind = CallInfo::vtable_call; |
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155 } else if (!resolved_klass->is_interface()) { |
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156 // A miranda method. Compute the vtable index. |
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157 ResourceMark rm; |
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158 klassVtable* vt = InstanceKlass::cast(resolved_klass)->vtable(); |
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159 index = vt->index_of_miranda(resolved_method->name(), |
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160 resolved_method->signature()); |
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161 kind = CallInfo::vtable_call; |
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162 } else if (resolved_method->has_vtable_index()) { |
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163 // Can occur if an interface redeclares a method of Object. |
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164 |
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165 #ifdef ASSERT |
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166 // Ensure that this is really the case. |
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167 KlassHandle object_klass = SystemDictionary::Object_klass(); |
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168 Method * object_resolved_method = object_klass()->vtable()->method_at(index); |
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169 assert(object_resolved_method->name() == resolved_method->name(), |
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170 err_msg("Object and interface method names should match at vtable index %d, %s != %s", |
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171 index, object_resolved_method->name()->as_C_string(), resolved_method->name()->as_C_string())); |
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172 assert(object_resolved_method->signature() == resolved_method->signature(), |
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173 err_msg("Object and interface method signatures should match at vtable index %d, %s != %s", |
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174 index, object_resolved_method->signature()->as_C_string(), resolved_method->signature()->as_C_string())); |
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175 #endif // ASSERT |
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176 |
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177 kind = CallInfo::vtable_call; |
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178 } else { |
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179 // A regular interface call. |
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180 kind = CallInfo::itable_call; |
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181 index = resolved_method->itable_index(); |
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182 } |
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183 assert(index == Method::nonvirtual_vtable_index || index >= 0, err_msg("bad index %d", index)); |
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184 _call_kind = kind; |
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185 _call_index = index; |
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186 _resolved_appendix = Handle(); |
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187 DEBUG_ONLY(verify()); |
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188 } |
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189 |
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190 #ifdef ASSERT |
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191 void CallInfo::verify() { |
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192 switch (call_kind()) { // the meaning and allowed value of index depends on kind |
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193 case CallInfo::direct_call: |
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194 if (_call_index == Method::nonvirtual_vtable_index) break; |
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195 // else fall through to check vtable index: |
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196 case CallInfo::vtable_call: |
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197 assert(resolved_klass()->verify_vtable_index(_call_index), ""); |
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198 break; |
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199 case CallInfo::itable_call: |
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200 assert(resolved_method()->method_holder()->verify_itable_index(_call_index), ""); |
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201 break; |
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202 case CallInfo::unknown_kind: |
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203 assert(call_kind() != CallInfo::unknown_kind, "CallInfo must be set"); |
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204 break; |
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205 default: |
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206 fatal(err_msg_res("Unexpected call kind %d", call_kind())); |
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207 } |
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208 } |
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209 #endif //ASSERT |
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210 |
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211 |
0 | 212 |
213 //------------------------------------------------------------------------------------------------------------------------ | |
214 // Klass resolution | |
215 | |
216 void LinkResolver::check_klass_accessability(KlassHandle ref_klass, KlassHandle sel_klass, TRAPS) { | |
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217 if (!Reflection::verify_class_access(ref_klass(), |
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218 sel_klass(), |
0 | 219 true)) { |
220 ResourceMark rm(THREAD); | |
221 Exceptions::fthrow( | |
222 THREAD_AND_LOCATION, | |
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223 vmSymbols::java_lang_IllegalAccessError(), |
0 | 224 "tried to access class %s from class %s", |
225 sel_klass->external_name(), | |
226 ref_klass->external_name() | |
227 ); | |
228 return; | |
229 } | |
230 } | |
231 | |
232 void LinkResolver::resolve_klass(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) { | |
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233 Klass* result_oop = pool->klass_ref_at(index, CHECK); |
0 | 234 result = KlassHandle(THREAD, result_oop); |
235 } | |
236 | |
237 //------------------------------------------------------------------------------------------------------------------------ | |
238 // Method resolution | |
239 // | |
240 // According to JVM spec. $5.4.3c & $5.4.3d | |
241 | |
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242 // Look up method in klasses, including static methods |
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243 // Then look up local default methods |
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244 void LinkResolver::lookup_method_in_klasses(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
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245 Method* result_oop = klass->uncached_lookup_method(name, signature); |
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246 if (result_oop == NULL) { |
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247 Array<Method*>* default_methods = InstanceKlass::cast(klass())->default_methods(); |
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248 if (default_methods != NULL) { |
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249 result_oop = InstanceKlass::find_method(default_methods, name, signature); |
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250 } |
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251 } |
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252 |
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253 if (EnableInvokeDynamic && result_oop != NULL) { |
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254 vmIntrinsics::ID iid = result_oop->intrinsic_id(); |
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255 if (MethodHandles::is_signature_polymorphic(iid)) { |
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256 // Do not link directly to these. The VM must produce a synthetic one using lookup_polymorphic_method. |
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257 return; |
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258 } |
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259 } |
0 | 260 result = methodHandle(THREAD, result_oop); |
261 } | |
262 | |
263 // returns first instance method | |
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264 // Looks up method in classes, then looks up local default methods |
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265 void LinkResolver::lookup_instance_method_in_klasses(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
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266 Method* result_oop = klass->uncached_lookup_method(name, signature); |
0 | 267 result = methodHandle(THREAD, result_oop); |
268 while (!result.is_null() && result->is_static()) { | |
6983 | 269 klass = KlassHandle(THREAD, result->method_holder()->super()); |
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270 result = methodHandle(THREAD, klass->uncached_lookup_method(name, signature)); |
0 | 271 } |
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272 |
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273 if (result.is_null()) { |
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274 Array<Method*>* default_methods = InstanceKlass::cast(klass())->default_methods(); |
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275 if (default_methods != NULL) { |
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276 result = methodHandle(InstanceKlass::find_method(default_methods, name, signature)); |
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277 assert(result.is_null() || !result->is_static(), "static defaults not allowed"); |
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278 } |
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279 } |
0 | 280 } |
281 | |
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282 int LinkResolver::vtable_index_of_interface_method(KlassHandle klass, |
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283 methodHandle resolved_method, TRAPS) { |
0 | 284 |
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285 int vtable_index = Method::invalid_vtable_index; |
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286 Symbol* name = resolved_method->name(); |
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287 Symbol* signature = resolved_method->signature(); |
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288 |
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289 // First check in default method array |
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290 if (!resolved_method->is_abstract() && |
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291 (InstanceKlass::cast(klass())->default_methods() != NULL)) { |
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292 int index = InstanceKlass::find_method_index(InstanceKlass::cast(klass())->default_methods(), name, signature); |
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293 if (index >= 0 ) { |
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294 vtable_index = InstanceKlass::cast(klass())->default_vtable_indices()->at(index); |
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295 } |
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296 } |
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297 if (vtable_index == Method::invalid_vtable_index) { |
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298 // get vtable_index for miranda methods |
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299 ResourceMark rm(THREAD); |
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300 klassVtable *vt = InstanceKlass::cast(klass())->vtable(); |
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301 vtable_index = vt->index_of_miranda(name, signature); |
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302 } |
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303 return vtable_index; |
0 | 304 } |
305 | |
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306 void LinkResolver::lookup_method_in_interfaces(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
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307 InstanceKlass *ik = InstanceKlass::cast(klass()); |
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308 result = methodHandle(THREAD, ik->lookup_method_in_all_interfaces(name, signature)); |
0 | 309 } |
310 | |
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311 void LinkResolver::lookup_polymorphic_method(methodHandle& result, |
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312 KlassHandle klass, Symbol* name, Symbol* full_signature, |
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313 KlassHandle current_klass, |
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314 Handle *appendix_result_or_null, |
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315 Handle *method_type_result, |
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316 TRAPS) { |
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317 vmIntrinsics::ID iid = MethodHandles::signature_polymorphic_name_id(name); |
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318 if (TraceMethodHandles) { |
9082 | 319 ResourceMark rm(THREAD); |
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320 tty->print_cr("lookup_polymorphic_method iid=%s %s.%s%s", |
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321 vmIntrinsics::name_at(iid), klass->external_name(), |
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322 name->as_C_string(), full_signature->as_C_string()); |
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323 } |
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324 if (EnableInvokeDynamic && |
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325 klass() == SystemDictionary::MethodHandle_klass() && |
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326 iid != vmIntrinsics::_none) { |
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327 if (MethodHandles::is_signature_polymorphic_intrinsic(iid)) { |
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328 // Most of these do not need an up-call to Java to resolve, so can be done anywhere. |
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329 // Do not erase last argument type (MemberName) if it is a static linkTo method. |
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330 bool keep_last_arg = MethodHandles::is_signature_polymorphic_static(iid); |
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331 TempNewSymbol basic_signature = |
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332 MethodHandles::lookup_basic_type_signature(full_signature, keep_last_arg, CHECK); |
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333 if (TraceMethodHandles) { |
9082 | 334 ResourceMark rm(THREAD); |
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335 tty->print_cr("lookup_polymorphic_method %s %s => basic %s", |
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336 name->as_C_string(), |
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337 full_signature->as_C_string(), |
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338 basic_signature->as_C_string()); |
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339 } |
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340 result = SystemDictionary::find_method_handle_intrinsic(iid, |
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341 basic_signature, |
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342 CHECK); |
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343 if (result.not_null()) { |
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344 assert(result->is_method_handle_intrinsic(), "MH.invokeBasic or MH.linkTo* intrinsic"); |
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345 assert(result->intrinsic_id() != vmIntrinsics::_invokeGeneric, "wrong place to find this"); |
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346 assert(basic_signature == result->signature(), "predict the result signature"); |
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347 if (TraceMethodHandles) { |
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348 tty->print("lookup_polymorphic_method => intrinsic "); |
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349 result->print_on(tty); |
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350 } |
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351 return; |
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352 } |
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353 } else if (iid == vmIntrinsics::_invokeGeneric |
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354 && !THREAD->is_Compiler_thread() |
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355 && appendix_result_or_null != NULL) { |
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356 // This is a method with type-checking semantics. |
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357 // We will ask Java code to spin an adapter method for it. |
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358 if (!MethodHandles::enabled()) { |
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359 // Make sure the Java part of the runtime has been booted up. |
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360 Klass* natives = SystemDictionary::MethodHandleNatives_klass(); |
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361 if (natives == NULL || InstanceKlass::cast(natives)->is_not_initialized()) { |
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362 SystemDictionary::resolve_or_fail(vmSymbols::java_lang_invoke_MethodHandleNatives(), |
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363 Handle(), |
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364 Handle(), |
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365 true, |
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366 CHECK); |
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367 } |
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368 } |
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369 |
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370 Handle appendix; |
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371 Handle method_type; |
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372 result = SystemDictionary::find_method_handle_invoker(name, |
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373 full_signature, |
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374 current_klass, |
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375 &appendix, |
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376 &method_type, |
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377 CHECK); |
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378 if (TraceMethodHandles) { |
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379 tty->print("lookup_polymorphic_method => (via Java) "); |
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380 result->print_on(tty); |
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381 tty->print(" lookup_polymorphic_method => appendix = "); |
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382 if (appendix.is_null()) tty->print_cr("(none)"); |
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383 else appendix->print_on(tty); |
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384 } |
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385 if (result.not_null()) { |
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386 #ifdef ASSERT |
9082 | 387 ResourceMark rm(THREAD); |
388 | |
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389 TempNewSymbol basic_signature = |
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390 MethodHandles::lookup_basic_type_signature(full_signature, CHECK); |
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391 int actual_size_of_params = result->size_of_parameters(); |
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392 int expected_size_of_params = ArgumentSizeComputer(basic_signature).size(); |
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393 // +1 for MethodHandle.this, +1 for trailing MethodType |
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394 if (!MethodHandles::is_signature_polymorphic_static(iid)) expected_size_of_params += 1; |
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395 if (appendix.not_null()) expected_size_of_params += 1; |
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396 if (actual_size_of_params != expected_size_of_params) { |
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397 tty->print_cr("*** basic_signature=%s", basic_signature->as_C_string()); |
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398 tty->print_cr("*** result for %s: ", vmIntrinsics::name_at(iid)); |
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399 result->print(); |
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400 } |
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401 assert(actual_size_of_params == expected_size_of_params, |
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402 err_msg("%d != %d", actual_size_of_params, expected_size_of_params)); |
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403 #endif //ASSERT |
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404 |
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405 assert(appendix_result_or_null != NULL, ""); |
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406 (*appendix_result_or_null) = appendix; |
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407 (*method_type_result) = method_type; |
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408 return; |
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409 } |
710 | 410 } |
411 } | |
412 } | |
413 | |
0 | 414 void LinkResolver::check_method_accessability(KlassHandle ref_klass, |
415 KlassHandle resolved_klass, | |
416 KlassHandle sel_klass, | |
417 methodHandle sel_method, | |
418 TRAPS) { | |
419 | |
420 AccessFlags flags = sel_method->access_flags(); | |
421 | |
422 // Special case: arrays always override "clone". JVMS 2.15. | |
423 // If the resolved klass is an array class, and the declaring class | |
424 // is java.lang.Object and the method is "clone", set the flags | |
425 // to public. | |
426 // | |
427 // We'll check for the method name first, as that's most likely | |
428 // to be false (so we'll short-circuit out of these tests). | |
429 if (sel_method->name() == vmSymbols::clone_name() && | |
1142 | 430 sel_klass() == SystemDictionary::Object_klass() && |
0 | 431 resolved_klass->oop_is_array()) { |
432 // We need to change "protected" to "public". | |
433 assert(flags.is_protected(), "clone not protected?"); | |
434 jint new_flags = flags.as_int(); | |
435 new_flags = new_flags & (~JVM_ACC_PROTECTED); | |
436 new_flags = new_flags | JVM_ACC_PUBLIC; | |
437 flags.set_flags(new_flags); | |
438 } | |
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439 // assert(extra_arg_result_or_null != NULL, "must be able to return extra argument"); |
0 | 440 |
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441 if (!Reflection::verify_field_access(ref_klass(), |
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442 resolved_klass(), |
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443 sel_klass(), |
0 | 444 flags, |
445 true)) { | |
446 ResourceMark rm(THREAD); | |
447 Exceptions::fthrow( | |
448 THREAD_AND_LOCATION, | |
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449 vmSymbols::java_lang_IllegalAccessError(), |
0 | 450 "tried to access method %s.%s%s from class %s", |
451 sel_klass->external_name(), | |
452 sel_method->name()->as_C_string(), | |
453 sel_method->signature()->as_C_string(), | |
454 ref_klass->external_name() | |
455 ); | |
456 return; | |
457 } | |
458 } | |
459 | |
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460 void LinkResolver::resolve_method_statically(methodHandle& resolved_method, KlassHandle& resolved_klass, |
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461 Bytecodes::Code code, constantPoolHandle pool, int index, TRAPS) { |
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462 // This method is used only |
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463 // (1) in C2 from InlineTree::ok_to_inline (via ciMethod::check_call), |
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464 // and |
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465 // (2) in Bytecode_invoke::static_target |
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466 // It appears to fail when applied to an invokeinterface call site. |
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467 // FIXME: Remove this method and ciMethod::check_call; refactor to use the other LinkResolver entry points. |
0 | 468 // resolve klass |
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469 if (code == Bytecodes::_invokedynamic) { |
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470 resolved_klass = SystemDictionary::MethodHandle_klass(); |
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471 Symbol* method_name = vmSymbols::invoke_name(); |
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472 Symbol* method_signature = pool->signature_ref_at(index); |
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473 KlassHandle current_klass(THREAD, pool->pool_holder()); |
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474 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, false, CHECK); |
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475 return; |
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476 } |
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477 |
0 | 478 resolve_klass(resolved_klass, pool, index, CHECK); |
479 | |
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480 Symbol* method_name = pool->name_ref_at(index); |
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481 Symbol* method_signature = pool->signature_ref_at(index); |
0 | 482 KlassHandle current_klass(THREAD, pool->pool_holder()); |
483 | |
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484 if (pool->has_preresolution() |
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485 || (resolved_klass() == SystemDictionary::MethodHandle_klass() && |
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486 MethodHandles::is_signature_polymorphic_name(resolved_klass(), method_name))) { |
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487 Method* result_oop = ConstantPool::method_at_if_loaded(pool, index); |
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488 if (result_oop != NULL) { |
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489 resolved_method = methodHandle(THREAD, result_oop); |
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490 return; |
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491 } |
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492 } |
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493 |
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494 if (code == Bytecodes::_invokeinterface) { |
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495 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); |
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496 } else if (code == Bytecodes::_invokevirtual) { |
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497 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
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498 } else { |
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499 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, false, CHECK); |
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500 } |
0 | 501 } |
502 | |
503 void LinkResolver::resolve_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
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504 Symbol* method_name, Symbol* method_signature, |
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505 KlassHandle current_klass, bool check_access, |
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506 bool require_methodref, TRAPS) { |
0 | 507 |
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508 Handle nested_exception; |
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509 |
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510 // 1. check if methodref required, that resolved_klass is not interfacemethodref |
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511 if (require_methodref && resolved_klass->is_interface()) { |
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512 ResourceMark rm(THREAD); |
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513 char buf[200]; |
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514 jio_snprintf(buf, sizeof(buf), "Found interface %s, but class was expected", |
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515 resolved_klass()->external_name()); |
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516 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
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517 } |
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518 |
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519 // 2. lookup method in resolved klass and its super klasses |
0 | 520 lookup_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK); |
521 | |
522 if (resolved_method.is_null()) { // not found in the class hierarchy | |
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523 // 3. lookup method in all the interfaces implemented by the resolved klass |
0 | 524 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); |
525 | |
526 if (resolved_method.is_null()) { | |
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527 // JSR 292: see if this is an implicitly generated method MethodHandle.linkToVirtual(*...), etc |
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528 lookup_polymorphic_method(resolved_method, resolved_klass, method_name, method_signature, |
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529 current_klass, (Handle*)NULL, (Handle*)NULL, THREAD); |
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530 if (HAS_PENDING_EXCEPTION) { |
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531 nested_exception = Handle(THREAD, PENDING_EXCEPTION); |
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532 CLEAR_PENDING_EXCEPTION; |
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533 } |
710 | 534 } |
535 | |
536 if (resolved_method.is_null()) { | |
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537 // 4. method lookup failed |
0 | 538 ResourceMark rm(THREAD); |
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539 THROW_MSG_CAUSE(vmSymbols::java_lang_NoSuchMethodError(), |
6983 | 540 Method::name_and_sig_as_C_string(resolved_klass(), |
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541 method_name, |
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542 method_signature), |
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543 nested_exception); |
0 | 544 } |
545 } | |
546 | |
547 // 5. check if method is concrete | |
548 if (resolved_method->is_abstract() && !resolved_klass->is_abstract()) { | |
549 ResourceMark rm(THREAD); | |
550 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 551 Method::name_and_sig_as_C_string(resolved_klass(), |
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552 method_name, |
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553 method_signature)); |
0 | 554 } |
555 | |
556 // 6. access checks, access checking may be turned off when calling from within the VM. | |
557 if (check_access) { | |
558 assert(current_klass.not_null() , "current_klass should not be null"); | |
559 | |
560 // check if method can be accessed by the referring class | |
561 check_method_accessability(current_klass, | |
562 resolved_klass, | |
563 KlassHandle(THREAD, resolved_method->method_holder()), | |
564 resolved_method, | |
565 CHECK); | |
566 | |
567 // check loader constraints | |
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568 Handle loader (THREAD, InstanceKlass::cast(current_klass())->class_loader()); |
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569 Handle class_loader (THREAD, resolved_method->method_holder()->class_loader()); |
0 | 570 { |
571 ResourceMark rm(THREAD); | |
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572 Symbol* failed_type_symbol = |
0 | 573 SystemDictionary::check_signature_loaders(method_signature, loader, |
574 class_loader, true, CHECK); | |
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575 if (failed_type_symbol != NULL) { |
0 | 576 const char* msg = "loader constraint violation: when resolving method" |
577 " \"%s\" the class loader (instance of %s) of the current class, %s," | |
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578 " and the class loader (instance of %s) for the method's defining class, %s, have" |
0 | 579 " different Class objects for the type %s used in the signature"; |
6983 | 580 char* sig = Method::name_and_sig_as_C_string(resolved_klass(),method_name,method_signature); |
0 | 581 const char* loader1 = SystemDictionary::loader_name(loader()); |
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582 char* current = InstanceKlass::cast(current_klass())->name()->as_C_string(); |
0 | 583 const char* loader2 = SystemDictionary::loader_name(class_loader()); |
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584 char* target = InstanceKlass::cast(resolved_method->method_holder()) |
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585 ->name()->as_C_string(); |
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586 char* failed_type_name = failed_type_symbol->as_C_string(); |
0 | 587 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + |
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588 strlen(current) + strlen(loader2) + strlen(target) + |
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589 strlen(failed_type_name) + 1; |
0 | 590 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
591 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, | |
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592 target, failed_type_name); |
0 | 593 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); |
594 } | |
595 } | |
596 } | |
597 } | |
598 | |
599 void LinkResolver::resolve_interface_method(methodHandle& resolved_method, | |
600 KlassHandle resolved_klass, | |
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601 Symbol* method_name, |
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602 Symbol* method_signature, |
0 | 603 KlassHandle current_klass, |
604 bool check_access, TRAPS) { | |
605 | |
606 // check if klass is interface | |
607 if (!resolved_klass->is_interface()) { | |
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608 ResourceMark rm(THREAD); |
0 | 609 char buf[200]; |
6983 | 610 jio_snprintf(buf, sizeof(buf), "Found class %s, but interface was expected", resolved_klass()->external_name()); |
0 | 611 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
612 } | |
613 | |
614 // lookup method in this interface or its super, java.lang.Object | |
615 lookup_instance_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
616 | |
617 if (resolved_method.is_null()) { | |
618 // lookup method in all the super-interfaces | |
619 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
620 if (resolved_method.is_null()) { | |
621 // no method found | |
622 ResourceMark rm(THREAD); | |
623 THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(), | |
6983 | 624 Method::name_and_sig_as_C_string(resolved_klass(), |
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625 method_name, |
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626 method_signature)); |
0 | 627 } |
628 } | |
629 | |
630 if (check_access) { | |
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631 // JDK8 adds non-public interface methods, and accessability check requirement |
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632 assert(current_klass.not_null() , "current_klass should not be null"); |
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633 |
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634 // check if method can be accessed by the referring class |
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635 check_method_accessability(current_klass, |
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636 resolved_klass, |
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637 KlassHandle(THREAD, resolved_method->method_holder()), |
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638 resolved_method, |
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639 CHECK); |
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640 |
0 | 641 HandleMark hm(THREAD); |
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642 Handle loader (THREAD, InstanceKlass::cast(current_klass())->class_loader()); |
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643 Handle class_loader (THREAD, resolved_method->method_holder()->class_loader()); |
0 | 644 { |
645 ResourceMark rm(THREAD); | |
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646 Symbol* failed_type_symbol = |
0 | 647 SystemDictionary::check_signature_loaders(method_signature, loader, |
648 class_loader, true, CHECK); | |
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649 if (failed_type_symbol != NULL) { |
0 | 650 const char* msg = "loader constraint violation: when resolving " |
651 "interface method \"%s\" the class loader (instance of %s) of the " | |
652 "current class, %s, and the class loader (instance of %s) for " | |
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653 "the method's defining class, %s, have different Class objects for the type %s " |
0 | 654 "used in the signature"; |
6983 | 655 char* sig = Method::name_and_sig_as_C_string(resolved_klass(),method_name,method_signature); |
0 | 656 const char* loader1 = SystemDictionary::loader_name(loader()); |
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657 char* current = InstanceKlass::cast(current_klass())->name()->as_C_string(); |
0 | 658 const char* loader2 = SystemDictionary::loader_name(class_loader()); |
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659 char* target = InstanceKlass::cast(resolved_method->method_holder()) |
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660 ->name()->as_C_string(); |
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661 char* failed_type_name = failed_type_symbol->as_C_string(); |
0 | 662 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + |
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663 strlen(current) + strlen(loader2) + strlen(target) + |
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664 strlen(failed_type_name) + 1; |
0 | 665 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
666 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, | |
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667 target, failed_type_name); |
0 | 668 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); |
669 } | |
670 } | |
671 } | |
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672 |
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673 if (TraceItables && Verbose) { |
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674 ResourceMark rm(THREAD); |
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675 tty->print("invokeinterface resolved method: caller-class:%s, compile-time-class:%s, method:%s, method_holder:%s, access_flags: ", |
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676 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name()), |
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677 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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678 Method::name_and_sig_as_C_string(resolved_klass(), |
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679 resolved_method->name(), |
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680 resolved_method->signature()), |
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681 resolved_method->method_holder()->internal_name() |
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682 ); |
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683 resolved_method->access_flags().print_on(tty); |
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684 if (resolved_method->is_default_method()) { |
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685 tty->print("default"); |
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686 } |
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687 if (resolved_method->is_overpass()) { |
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688 tty->print("overpass"); |
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689 } |
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690 tty->cr(); |
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691 } |
0 | 692 } |
693 | |
694 //------------------------------------------------------------------------------------------------------------------------ | |
695 // Field resolution | |
696 | |
697 void LinkResolver::check_field_accessability(KlassHandle ref_klass, | |
698 KlassHandle resolved_klass, | |
699 KlassHandle sel_klass, | |
700 fieldDescriptor& fd, | |
701 TRAPS) { | |
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702 if (!Reflection::verify_field_access(ref_klass(), |
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703 resolved_klass(), |
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704 sel_klass(), |
0 | 705 fd.access_flags(), |
706 true)) { | |
707 ResourceMark rm(THREAD); | |
708 Exceptions::fthrow( | |
709 THREAD_AND_LOCATION, | |
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710 vmSymbols::java_lang_IllegalAccessError(), |
0 | 711 "tried to access field %s.%s from class %s", |
712 sel_klass->external_name(), | |
713 fd.name()->as_C_string(), | |
714 ref_klass->external_name() | |
715 ); | |
716 return; | |
717 } | |
718 } | |
719 | |
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720 void LinkResolver::resolve_field_access(fieldDescriptor& result, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS) { |
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721 // Load these early in case the resolve of the containing klass fails |
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722 Symbol* field = pool->name_ref_at(index); |
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723 Symbol* sig = pool->signature_ref_at(index); |
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724 |
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725 // resolve specified klass |
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726 KlassHandle resolved_klass; |
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727 resolve_klass(resolved_klass, pool, index, CHECK); |
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728 |
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729 KlassHandle current_klass(THREAD, pool->pool_holder()); |
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730 resolve_field(result, resolved_klass, field, sig, current_klass, byte, true, true, CHECK); |
0 | 731 } |
732 | |
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733 void LinkResolver::resolve_field(fieldDescriptor& fd, KlassHandle resolved_klass, Symbol* field, Symbol* sig, |
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734 KlassHandle current_klass, Bytecodes::Code byte, bool check_access, bool initialize_class, |
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735 TRAPS) { |
0 | 736 assert(byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic || |
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737 byte == Bytecodes::_getfield || byte == Bytecodes::_putfield || |
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738 (byte == Bytecodes::_nop && !check_access), "bad field access bytecode"); |
0 | 739 |
740 bool is_static = (byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic); | |
741 bool is_put = (byte == Bytecodes::_putfield || byte == Bytecodes::_putstatic); | |
742 | |
743 // Check if there's a resolved klass containing the field | |
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744 if (resolved_klass.is_null()) { |
0 | 745 ResourceMark rm(THREAD); |
746 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); | |
747 } | |
748 | |
749 // Resolve instance field | |
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750 KlassHandle sel_klass(THREAD, InstanceKlass::cast(resolved_klass())->find_field(field, sig, &fd)); |
0 | 751 // check if field exists; i.e., if a klass containing the field def has been selected |
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752 if (sel_klass.is_null()) { |
0 | 753 ResourceMark rm(THREAD); |
754 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); | |
755 } | |
756 | |
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757 if (!check_access) |
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758 // Access checking may be turned off when calling from within the VM. |
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759 return; |
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760 |
0 | 761 // check access |
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762 check_field_accessability(current_klass, resolved_klass, sel_klass, fd, CHECK); |
0 | 763 |
764 // check for errors | |
765 if (is_static != fd.is_static()) { | |
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766 ResourceMark rm(THREAD); |
0 | 767 char msg[200]; |
6983 | 768 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 | 769 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), msg); |
770 } | |
771 | |
772 // Final fields can only be accessed from its own class. | |
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773 if (is_put && fd.access_flags().is_final() && sel_klass() != current_klass()) { |
0 | 774 THROW(vmSymbols::java_lang_IllegalAccessError()); |
775 } | |
776 | |
777 // initialize resolved_klass if necessary | |
778 // note 1: the klass which declared the field must be initialized (i.e, sel_klass) | |
779 // according to the newest JVM spec (5.5, p.170) - was bug (gri 7/28/99) | |
780 // | |
781 // note 2: we don't want to force initialization if we are just checking | |
782 // if the field access is legal; e.g., during compilation | |
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783 if (is_static && initialize_class) { |
0 | 784 sel_klass->initialize(CHECK); |
785 } | |
786 | |
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787 if (sel_klass() != current_klass()) { |
0 | 788 HandleMark hm(THREAD); |
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789 Handle ref_loader (THREAD, InstanceKlass::cast(current_klass())->class_loader()); |
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790 Handle sel_loader (THREAD, InstanceKlass::cast(sel_klass())->class_loader()); |
0 | 791 { |
792 ResourceMark rm(THREAD); | |
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793 Symbol* failed_type_symbol = |
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794 SystemDictionary::check_signature_loaders(sig, |
0 | 795 ref_loader, sel_loader, |
796 false, | |
797 CHECK); | |
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798 if (failed_type_symbol != NULL) { |
0 | 799 const char* msg = "loader constraint violation: when resolving field" |
800 " \"%s\" the class loader (instance of %s) of the referring class, " | |
801 "%s, and the class loader (instance of %s) for the field's resolved " | |
802 "type, %s, have different Class objects for that type"; | |
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803 char* field_name = field->as_C_string(); |
0 | 804 const char* loader1 = SystemDictionary::loader_name(ref_loader()); |
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805 char* sel = InstanceKlass::cast(sel_klass())->name()->as_C_string(); |
0 | 806 const char* loader2 = SystemDictionary::loader_name(sel_loader()); |
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807 char* failed_type_name = failed_type_symbol->as_C_string(); |
0 | 808 size_t buflen = strlen(msg) + strlen(field_name) + strlen(loader1) + |
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809 strlen(sel) + strlen(loader2) + strlen(failed_type_name) + 1; |
0 | 810 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
811 jio_snprintf(buf, buflen, msg, field_name, loader1, sel, loader2, | |
812 failed_type_name); | |
813 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); | |
814 } | |
815 } | |
816 } | |
817 | |
818 // return information. note that the klass is set to the actual klass containing the | |
819 // field, otherwise access of static fields in superclasses will not work. | |
820 } | |
821 | |
822 | |
823 //------------------------------------------------------------------------------------------------------------------------ | |
824 // Invoke resolution | |
825 // | |
826 // Naming conventions: | |
827 // | |
828 // resolved_method the specified method (i.e., static receiver specified via constant pool index) | |
829 // sel_method the selected method (selected via run-time lookup; e.g., based on dynamic receiver class) | |
830 // resolved_klass the specified klass (i.e., specified via constant pool index) | |
831 // recv_klass the receiver klass | |
832 | |
833 | |
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834 void LinkResolver::resolve_static_call(CallInfo& result, KlassHandle& resolved_klass, Symbol* method_name, |
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835 Symbol* method_signature, KlassHandle current_klass, |
0 | 836 bool check_access, bool initialize_class, TRAPS) { |
837 methodHandle resolved_method; | |
838 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
6983 | 839 resolved_klass = KlassHandle(THREAD, resolved_method->method_holder()); |
0 | 840 |
841 // Initialize klass (this should only happen if everything is ok) | |
842 if (initialize_class && resolved_klass->should_be_initialized()) { | |
843 resolved_klass->initialize(CHECK); | |
844 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
845 } | |
846 | |
847 // setup result | |
848 result.set_static(resolved_klass, resolved_method, CHECK); | |
849 } | |
850 | |
851 // throws linktime exceptions | |
852 void LinkResolver::linktime_resolve_static_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
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853 Symbol* method_name, Symbol* method_signature, |
0 | 854 KlassHandle current_klass, bool check_access, TRAPS) { |
855 | |
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856 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, false, CHECK); |
0 | 857 assert(resolved_method->name() != vmSymbols::class_initializer_name(), "should have been checked in verifier"); |
858 | |
859 // check if static | |
860 if (!resolved_method->is_static()) { | |
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861 ResourceMark rm(THREAD); |
0 | 862 char buf[200]; |
6983 | 863 jio_snprintf(buf, sizeof(buf), "Expected static method %s", Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 864 resolved_method->name(), |
865 resolved_method->signature())); | |
866 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
867 } | |
868 } | |
869 | |
870 | |
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871 void LinkResolver::resolve_special_call(CallInfo& result, KlassHandle resolved_klass, Symbol* method_name, |
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872 Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS) { |
0 | 873 methodHandle resolved_method; |
874 linktime_resolve_special_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
875 runtime_resolve_special_method(result, resolved_method, resolved_klass, current_klass, check_access, CHECK); | |
876 } | |
877 | |
878 // throws linktime exceptions | |
879 void LinkResolver::linktime_resolve_special_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
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880 Symbol* method_name, Symbol* method_signature, |
0 | 881 KlassHandle current_klass, bool check_access, TRAPS) { |
882 | |
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883 // Invokespecial is called for multiple special reasons: |
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884 // <init> |
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885 // local private method invocation, for classes and interfaces |
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886 // superclass.method, which can also resolve to a default method |
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887 // and the selected method is recalculated relative to the direct superclass |
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888 // superinterface.method, which explicitly does not check shadowing |
6934 | 889 |
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890 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, false, CHECK); |
0 | 891 |
892 // check if method name is <init>, that it is found in same klass as static type | |
893 if (resolved_method->name() == vmSymbols::object_initializer_name() && | |
894 resolved_method->method_holder() != resolved_klass()) { | |
895 ResourceMark rm(THREAD); | |
896 Exceptions::fthrow( | |
897 THREAD_AND_LOCATION, | |
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898 vmSymbols::java_lang_NoSuchMethodError(), |
0 | 899 "%s: method %s%s not found", |
900 resolved_klass->external_name(), | |
901 resolved_method->name()->as_C_string(), | |
902 resolved_method->signature()->as_C_string() | |
903 ); | |
904 return; | |
905 } | |
906 | |
907 // check if not static | |
908 if (resolved_method->is_static()) { | |
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909 ResourceMark rm(THREAD); |
0 | 910 char buf[200]; |
911 jio_snprintf(buf, sizeof(buf), | |
912 "Expecting non-static method %s", | |
6983 | 913 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 914 resolved_method->name(), |
915 resolved_method->signature())); | |
916 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
917 } | |
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918 |
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919 if (TraceItables && Verbose) { |
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920 ResourceMark rm(THREAD); |
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921 tty->print("invokespecial resolved method: caller-class:%s, compile-time-class:%s, method:%s, method_holder:%s, access_flags: ", |
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922 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name()), |
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923 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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924 Method::name_and_sig_as_C_string(resolved_klass(), |
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925 resolved_method->name(), |
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926 resolved_method->signature()), |
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927 resolved_method->method_holder()->internal_name() |
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928 ); |
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929 resolved_method->access_flags().print_on(tty); |
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930 if (resolved_method->is_default_method()) { |
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931 tty->print("default"); |
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932 } |
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933 if (resolved_method->is_overpass()) { |
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934 tty->print("overpass"); |
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935 } |
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936 tty->cr(); |
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937 } |
0 | 938 } |
939 | |
940 // throws runtime exceptions | |
941 void LinkResolver::runtime_resolve_special_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, | |
942 KlassHandle current_klass, bool check_access, TRAPS) { | |
943 | |
944 // resolved method is selected method unless we have an old-style lookup | |
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945 // for a superclass method |
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946 // Invokespecial for a superinterface, resolved method is selected method, |
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947 // no checks for shadowing |
0 | 948 methodHandle sel_method(THREAD, resolved_method()); |
949 | |
950 // check if this is an old-style super call and do a new lookup if so | |
951 { KlassHandle method_klass = KlassHandle(THREAD, | |
952 resolved_method->method_holder()); | |
953 | |
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954 if (check_access && |
0 | 955 // a) check if ACC_SUPER flag is set for the current class |
8702 | 956 (current_klass->is_super() || !AllowNonVirtualCalls) && |
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957 // b) check if the class of the resolved_klass is a superclass |
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958 // (not supertype in order to exclude interface classes) of the current class. |
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959 // This check is not performed for super.invoke for interface methods |
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960 // in super interfaces. |
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961 current_klass->is_subclass_of(resolved_klass()) && |
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962 current_klass() != resolved_klass() && |
0 | 963 // c) check if the method is not <init> |
964 resolved_method->name() != vmSymbols::object_initializer_name()) { | |
965 // Lookup super method | |
966 KlassHandle super_klass(THREAD, current_klass->super()); | |
967 lookup_instance_method_in_klasses(sel_method, super_klass, | |
2177
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968 resolved_method->name(), |
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969 resolved_method->signature(), CHECK); |
0 | 970 // check if found |
971 if (sel_method.is_null()) { | |
972 ResourceMark rm(THREAD); | |
973 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 974 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 975 resolved_method->name(), |
976 resolved_method->signature())); | |
977 } | |
978 } | |
979 } | |
980 | |
981 // check if not static | |
982 if (sel_method->is_static()) { | |
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983 ResourceMark rm(THREAD); |
0 | 984 char buf[200]; |
6983 | 985 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 986 resolved_method->name(), |
987 resolved_method->signature())); | |
988 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
989 } | |
990 | |
991 // check if abstract | |
992 if (sel_method->is_abstract()) { | |
993 ResourceMark rm(THREAD); | |
994 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 995 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 996 sel_method->name(), |
997 sel_method->signature())); | |
998 } | |
999 | |
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1000 if (TraceItables && Verbose) { |
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1001 ResourceMark rm(THREAD); |
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1002 tty->print("invokespecial selected method: resolved-class:%s, method:%s, method_holder:%s, access_flags: ", |
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1003 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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1004 Method::name_and_sig_as_C_string(resolved_klass(), |
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1005 sel_method->name(), |
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1006 sel_method->signature()), |
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1007 sel_method->method_holder()->internal_name() |
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1008 ); |
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1009 sel_method->access_flags().print_on(tty); |
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1010 if (sel_method->is_default_method()) { |
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1011 tty->print("default"); |
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1012 } |
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1013 if (sel_method->is_overpass()) { |
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1014 tty->print("overpass"); |
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1015 } |
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1016 tty->cr(); |
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1017 } |
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1018 |
0 | 1019 // setup result |
1020 result.set_static(resolved_klass, sel_method, CHECK); | |
1021 } | |
1022 | |
1023 void LinkResolver::resolve_virtual_call(CallInfo& result, Handle recv, KlassHandle receiver_klass, KlassHandle resolved_klass, | |
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1024 Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, |
0 | 1025 bool check_access, bool check_null_and_abstract, TRAPS) { |
1026 methodHandle resolved_method; | |
1027 linktime_resolve_virtual_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
1028 runtime_resolve_virtual_method(result, resolved_method, resolved_klass, recv, receiver_klass, check_null_and_abstract, CHECK); | |
1029 } | |
1030 | |
1031 // throws linktime exceptions | |
1032 void LinkResolver::linktime_resolve_virtual_method(methodHandle &resolved_method, KlassHandle resolved_klass, | |
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1033 Symbol* method_name, Symbol* method_signature, |
0 | 1034 KlassHandle current_klass, bool check_access, TRAPS) { |
1035 // normal method resolution | |
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1036 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, true, CHECK); |
0 | 1037 |
1038 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); | |
1039 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); | |
1040 | |
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1041 // check if private interface method |
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1042 if (resolved_klass->is_interface() && resolved_method->is_private()) { |
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1043 ResourceMark rm(THREAD); |
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1044 char buf[200]; |
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1045 jio_snprintf(buf, sizeof(buf), "private interface method requires invokespecial, not invokevirtual: method %s, caller-class:%s", |
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1046 Method::name_and_sig_as_C_string(resolved_klass(), |
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1047 resolved_method->name(), |
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1048 resolved_method->signature()), |
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1049 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name())); |
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1050 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
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1051 } |
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1052 |
0 | 1053 // check if not static |
1054 if (resolved_method->is_static()) { | |
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1055 ResourceMark rm(THREAD); |
0 | 1056 char buf[200]; |
6983 | 1057 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1058 resolved_method->name(), |
1059 resolved_method->signature())); | |
1060 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
1061 } | |
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1062 |
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1063 if (PrintVtables && Verbose) { |
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1064 ResourceMark rm(THREAD); |
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1065 tty->print("invokevirtual resolved method: caller-class:%s, compile-time-class:%s, method:%s, method_holder:%s, access_flags: ", |
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1066 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name()), |
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1067 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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1068 Method::name_and_sig_as_C_string(resolved_klass(), |
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1069 resolved_method->name(), |
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1070 resolved_method->signature()), |
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1071 resolved_method->method_holder()->internal_name() |
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1072 ); |
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1073 resolved_method->access_flags().print_on(tty); |
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1074 if (resolved_method->is_default_method()) { |
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1075 tty->print("default"); |
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1076 } |
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1077 if (resolved_method->is_overpass()) { |
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1078 tty->print("overpass"); |
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1079 } |
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1080 tty->cr(); |
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1081 } |
0 | 1082 } |
1083 | |
1084 // throws runtime exceptions | |
1085 void LinkResolver::runtime_resolve_virtual_method(CallInfo& result, | |
1086 methodHandle resolved_method, | |
1087 KlassHandle resolved_klass, | |
1088 Handle recv, | |
1089 KlassHandle recv_klass, | |
1090 bool check_null_and_abstract, | |
1091 TRAPS) { | |
1092 | |
1093 // setup default return values | |
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1094 int vtable_index = Method::invalid_vtable_index; |
0 | 1095 methodHandle selected_method; |
1096 | |
1097 assert(recv.is_null() || recv->is_oop(), "receiver is not an oop"); | |
1098 | |
1099 // runtime method resolution | |
1100 if (check_null_and_abstract && recv.is_null()) { // check if receiver exists | |
1101 THROW(vmSymbols::java_lang_NullPointerException()); | |
1102 } | |
1103 | |
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1104 // Virtual methods cannot be resolved before its klass has been linked, for otherwise the Method*'s |
0 | 1105 // has not been rewritten, and the vtable initialized. Make sure to do this after the nullcheck, since |
1106 // a missing receiver might result in a bogus lookup. | |
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1107 assert(resolved_method->method_holder()->is_linked(), "must be linked"); |
0 | 1108 |
1109 // do lookup based on receiver klass using the vtable index | |
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1110 if (resolved_method->method_holder()->is_interface()) { // miranda method |
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1111 vtable_index = vtable_index_of_interface_method(resolved_klass, |
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1112 resolved_method, CHECK); |
0 | 1113 assert(vtable_index >= 0 , "we should have valid vtable index at this point"); |
1114 | |
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1115 InstanceKlass* inst = InstanceKlass::cast(recv_klass()); |
0 | 1116 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); |
1117 } else { | |
1118 // at this point we are sure that resolved_method is virtual and not | |
1119 // a miranda method; therefore, it must have a valid vtable index. | |
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1120 assert(!resolved_method->has_itable_index(), ""); |
0 | 1121 vtable_index = resolved_method->vtable_index(); |
1122 // We could get a negative vtable_index for final methods, | |
1123 // because as an optimization they are they are never put in the vtable, | |
1124 // unless they override an existing method. | |
1125 // If we do get a negative, it means the resolved method is the the selected | |
1126 // method, and it can never be changed by an override. | |
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1127 if (vtable_index == Method::nonvirtual_vtable_index) { |
0 | 1128 assert(resolved_method->can_be_statically_bound(), "cannot override this method"); |
1129 selected_method = resolved_method; | |
1130 } else { | |
1131 // recv_klass might be an arrayKlassOop but all vtables start at | |
1132 // the same place. The cast is to avoid virtual call and assertion. | |
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1133 InstanceKlass* inst = (InstanceKlass*)recv_klass(); |
0 | 1134 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); |
1135 } | |
1136 } | |
1137 | |
1138 // check if method exists | |
1139 if (selected_method.is_null()) { | |
1140 ResourceMark rm(THREAD); | |
1141 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1142 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1143 resolved_method->name(), |
1144 resolved_method->signature())); | |
1145 } | |
1146 | |
1147 // check if abstract | |
1148 if (check_null_and_abstract && selected_method->is_abstract()) { | |
1149 ResourceMark rm(THREAD); | |
1150 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1151 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1152 selected_method->name(), |
1153 selected_method->signature())); | |
1154 } | |
1155 | |
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1156 if (PrintVtables && Verbose) { |
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1157 ResourceMark rm(THREAD); |
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1158 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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1159 (recv_klass.is_null() ? "<NULL>" : recv_klass->internal_name()), |
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1160 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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1161 Method::name_and_sig_as_C_string(resolved_klass(), |
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1162 resolved_method->name(), |
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1163 resolved_method->signature()), |
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1164 selected_method->method_holder()->internal_name(), |
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|
1165 vtable_index |
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|
1166 ); |
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1167 selected_method->access_flags().print_on(tty); |
12823
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1168 if (selected_method->is_default_method()) { |
12318
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|
1169 tty->print("default"); |
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|
1170 } |
12823
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1171 if (selected_method->is_overpass()) { |
12318
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1172 tty->print("overpass"); |
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|
1173 } |
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|
1174 tty->cr(); |
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|
1175 } |
0 | 1176 // setup result |
1177 result.set_virtual(resolved_klass, recv_klass, resolved_method, selected_method, vtable_index, CHECK); | |
1178 } | |
1179 | |
1180 void LinkResolver::resolve_interface_call(CallInfo& result, Handle recv, KlassHandle recv_klass, KlassHandle resolved_klass, | |
2177
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|
1181 Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, |
0 | 1182 bool check_access, bool check_null_and_abstract, TRAPS) { |
1183 methodHandle resolved_method; | |
1184 linktime_resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
1185 runtime_resolve_interface_method(result, resolved_method, resolved_klass, recv, recv_klass, check_null_and_abstract, CHECK); | |
1186 } | |
1187 | |
1188 // throws linktime exceptions | |
2177
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|
1189 void LinkResolver::linktime_resolve_interface_method(methodHandle& resolved_method, KlassHandle resolved_klass, Symbol* method_name, |
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|
1190 Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS) { |
0 | 1191 // normal interface method resolution |
1192 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
1193 | |
1194 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); | |
1195 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); | |
1196 } | |
1197 | |
1198 // throws runtime exceptions | |
1199 void LinkResolver::runtime_resolve_interface_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, | |
1200 Handle recv, KlassHandle recv_klass, bool check_null_and_abstract, TRAPS) { | |
1201 // check if receiver exists | |
1202 if (check_null_and_abstract && recv.is_null()) { | |
1203 THROW(vmSymbols::java_lang_NullPointerException()); | |
1204 } | |
1205 | |
12318
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1206 // check if private interface method |
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1207 if (resolved_klass->is_interface() && resolved_method->is_private()) { |
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1208 ResourceMark rm(THREAD); |
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|
1209 char buf[200]; |
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|
1210 jio_snprintf(buf, sizeof(buf), "private interface method requires invokespecial, not invokeinterface: method %s", |
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|
1211 Method::name_and_sig_as_C_string(resolved_klass(), |
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|
1212 resolved_method->name(), |
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|
1213 resolved_method->signature())); |
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|
1214 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
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|
1215 } |
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|
1216 |
0 | 1217 // check if receiver klass implements the resolved interface |
1218 if (!recv_klass->is_subtype_of(resolved_klass())) { | |
3324
acf5e660c71a
6728025: LinkResolver is missing some ResourceMarks
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diff
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|
1219 ResourceMark rm(THREAD); |
0 | 1220 char buf[200]; |
1221 jio_snprintf(buf, sizeof(buf), "Class %s does not implement the requested interface %s", | |
6983 | 1222 recv_klass()->external_name(), |
1223 resolved_klass()->external_name()); | |
0 | 1224 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
1225 } | |
1226 // do lookup based on receiver klass | |
1227 methodHandle sel_method; | |
1228 lookup_instance_method_in_klasses(sel_method, recv_klass, | |
2177
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1229 resolved_method->name(), |
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|
1230 resolved_method->signature(), CHECK); |
12264
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|
1231 if (sel_method.is_null() && !check_null_and_abstract) { |
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|
1232 // In theory this is a harmless placeholder value, but |
b2e698d2276c
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1233 // in practice leaving in null affects the nsk default method tests. |
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|
1234 // This needs further study. |
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|
1235 sel_method = resolved_method; |
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|
1236 } |
0 | 1237 // check if method exists |
1238 if (sel_method.is_null()) { | |
1239 ResourceMark rm(THREAD); | |
1240 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1241 Method::name_and_sig_as_C_string(recv_klass(), |
0 | 1242 resolved_method->name(), |
1243 resolved_method->signature())); | |
1244 } | |
10128
41ed397cc0cd
8006267: InterfaceMethod_ref should allow invokestatic and invokespecial
bharadwaj
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9082
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|
1245 // check access |
12318
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1246 // Throw Illegal Access Error if sel_method is not public. |
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|
1247 if (!sel_method->is_public()) { |
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|
1248 ResourceMark rm(THREAD); |
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|
1249 THROW_MSG(vmSymbols::java_lang_IllegalAccessError(), |
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|
1250 Method::name_and_sig_as_C_string(recv_klass(), |
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|
1251 sel_method->name(), |
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|
1252 sel_method->signature())); |
10128
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diff
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|
1253 } |
0 | 1254 // check if abstract |
1255 if (check_null_and_abstract && sel_method->is_abstract()) { | |
1256 ResourceMark rm(THREAD); | |
1257 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1258 Method::name_and_sig_as_C_string(recv_klass(), |
0 | 1259 sel_method->name(), |
1260 sel_method->signature())); | |
1261 } | |
1262 // setup result | |
12264
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|
1263 if (!resolved_method->has_itable_index()) { |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
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|
1264 int vtable_index = resolved_method->vtable_index(); |
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|
1265 assert(vtable_index == sel_method->vtable_index(), "sanity check"); |
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|
1266 result.set_virtual(resolved_klass, recv_klass, resolved_method, sel_method, vtable_index, CHECK); |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
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|
1267 return; |
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|
1268 } |
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8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
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|
1269 int itable_index = resolved_method()->itable_index(); |
12318
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|
1270 |
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|
1271 if (TraceItables && Verbose) { |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1272 ResourceMark rm(THREAD); |
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1273 tty->print("invokeinterface selected method: receiver-class:%s, resolved-class:%s, method:%s, method_holder:%s, access_flags: ", |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1274 (recv_klass.is_null() ? "<NULL>" : recv_klass->internal_name()), |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1275 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1276 Method::name_and_sig_as_C_string(resolved_klass(), |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1277 resolved_method->name(), |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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diff
changeset
|
1278 resolved_method->signature()), |
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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diff
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|
1279 sel_method->method_holder()->internal_name() |
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|
1280 ); |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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changeset
|
1281 sel_method->access_flags().print_on(tty); |
12823
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diff
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|
1282 if (sel_method->is_default_method()) { |
12318
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
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|
1283 tty->print("default"); |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1284 } |
12823
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diff
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|
1285 if (sel_method->is_overpass()) { |
12318
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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diff
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|
1286 tty->print("overpass"); |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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diff
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|
1287 } |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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diff
changeset
|
1288 tty->cr(); |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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diff
changeset
|
1289 } |
12264
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8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
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diff
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|
1290 result.set_interface(resolved_klass, recv_klass, resolved_method, sel_method, itable_index, CHECK); |
0 | 1291 } |
1292 | |
1293 | |
1294 methodHandle LinkResolver::linktime_resolve_interface_method_or_null( | |
1295 KlassHandle resolved_klass, | |
2177
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diff
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|
1296 Symbol* method_name, |
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diff
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|
1297 Symbol* method_signature, |
0 | 1298 KlassHandle current_klass, |
1299 bool check_access) { | |
1300 EXCEPTION_MARK; | |
1301 methodHandle method_result; | |
1302 linktime_resolve_interface_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); | |
1303 if (HAS_PENDING_EXCEPTION) { | |
1304 CLEAR_PENDING_EXCEPTION; | |
1305 return methodHandle(); | |
1306 } else { | |
1307 return method_result; | |
1308 } | |
1309 } | |
1310 | |
1311 methodHandle LinkResolver::linktime_resolve_virtual_method_or_null( | |
1312 KlassHandle resolved_klass, | |
2177
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|
1313 Symbol* method_name, |
3582bf76420e
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diff
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|
1314 Symbol* method_signature, |
0 | 1315 KlassHandle current_klass, |
1316 bool check_access) { | |
1317 EXCEPTION_MARK; | |
1318 methodHandle method_result; | |
1319 linktime_resolve_virtual_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); | |
1320 if (HAS_PENDING_EXCEPTION) { | |
1321 CLEAR_PENDING_EXCEPTION; | |
1322 return methodHandle(); | |
1323 } else { | |
1324 return method_result; | |
1325 } | |
1326 } | |
1327 | |
1328 methodHandle LinkResolver::resolve_virtual_call_or_null( | |
1329 KlassHandle receiver_klass, | |
1330 KlassHandle resolved_klass, | |
2177
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diff
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|
1331 Symbol* name, |
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diff
changeset
|
1332 Symbol* signature, |
0 | 1333 KlassHandle current_klass) { |
1334 EXCEPTION_MARK; | |
1335 CallInfo info; | |
1336 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1337 if (HAS_PENDING_EXCEPTION) { | |
1338 CLEAR_PENDING_EXCEPTION; | |
1339 return methodHandle(); | |
1340 } | |
1341 return info.selected_method(); | |
1342 } | |
1343 | |
1344 methodHandle LinkResolver::resolve_interface_call_or_null( | |
1345 KlassHandle receiver_klass, | |
1346 KlassHandle resolved_klass, | |
2177
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diff
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|
1347 Symbol* name, |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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diff
changeset
|
1348 Symbol* signature, |
0 | 1349 KlassHandle current_klass) { |
1350 EXCEPTION_MARK; | |
1351 CallInfo info; | |
1352 resolve_interface_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1353 if (HAS_PENDING_EXCEPTION) { | |
1354 CLEAR_PENDING_EXCEPTION; | |
1355 return methodHandle(); | |
1356 } | |
1357 return info.selected_method(); | |
1358 } | |
1359 | |
1360 int LinkResolver::resolve_virtual_vtable_index( | |
1361 KlassHandle receiver_klass, | |
1362 KlassHandle resolved_klass, | |
2177
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|
1363 Symbol* name, |
3582bf76420e
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coleenp
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diff
changeset
|
1364 Symbol* signature, |
0 | 1365 KlassHandle current_klass) { |
1366 EXCEPTION_MARK; | |
1367 CallInfo info; | |
1368 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1369 if (HAS_PENDING_EXCEPTION) { | |
1370 CLEAR_PENDING_EXCEPTION; | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6271
diff
changeset
|
1371 return Method::invalid_vtable_index; |
0 | 1372 } |
1373 return info.vtable_index(); | |
1374 } | |
1375 | |
1376 methodHandle LinkResolver::resolve_static_call_or_null( | |
1377 KlassHandle resolved_klass, | |
2177
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diff
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|
1378 Symbol* name, |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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diff
changeset
|
1379 Symbol* signature, |
0 | 1380 KlassHandle current_klass) { |
1381 EXCEPTION_MARK; | |
1382 CallInfo info; | |
1383 resolve_static_call(info, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1384 if (HAS_PENDING_EXCEPTION) { | |
1385 CLEAR_PENDING_EXCEPTION; | |
1386 return methodHandle(); | |
1387 } | |
1388 return info.selected_method(); | |
1389 } | |
1390 | |
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1391 methodHandle LinkResolver::resolve_special_call_or_null(KlassHandle resolved_klass, Symbol* name, Symbol* signature, |
0 | 1392 KlassHandle current_klass) { |
1393 EXCEPTION_MARK; | |
1394 CallInfo info; | |
1395 resolve_special_call(info, resolved_klass, name, signature, current_klass, true, THREAD); | |
1396 if (HAS_PENDING_EXCEPTION) { | |
1397 CLEAR_PENDING_EXCEPTION; | |
1398 return methodHandle(); | |
1399 } | |
1400 return info.selected_method(); | |
1401 } | |
1402 | |
1403 | |
1404 | |
1405 //------------------------------------------------------------------------------------------------------------------------ | |
1406 // ConstantPool entries | |
1407 | |
1408 void LinkResolver::resolve_invoke(CallInfo& result, Handle recv, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS) { | |
1409 switch (byte) { | |
1410 case Bytecodes::_invokestatic : resolve_invokestatic (result, pool, index, CHECK); break; | |
1411 case Bytecodes::_invokespecial : resolve_invokespecial (result, pool, index, CHECK); break; | |
1412 case Bytecodes::_invokevirtual : resolve_invokevirtual (result, recv, pool, index, CHECK); break; | |
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1413 case Bytecodes::_invokehandle : resolve_invokehandle (result, pool, index, CHECK); break; |
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1414 case Bytecodes::_invokedynamic : resolve_invokedynamic (result, pool, index, CHECK); break; |
0 | 1415 case Bytecodes::_invokeinterface: resolve_invokeinterface(result, recv, pool, index, CHECK); break; |
1416 } | |
1417 return; | |
1418 } | |
1419 | |
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1420 void LinkResolver::resolve_pool(KlassHandle& resolved_klass, Symbol*& method_name, Symbol*& method_signature, |
0 | 1421 KlassHandle& current_klass, constantPoolHandle pool, int index, TRAPS) { |
1422 // resolve klass | |
1423 resolve_klass(resolved_klass, pool, index, CHECK); | |
1424 | |
1425 // Get name, signature, and static klass | |
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1426 method_name = pool->name_ref_at(index); |
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1427 method_signature = pool->signature_ref_at(index); |
0 | 1428 current_klass = KlassHandle(THREAD, pool->pool_holder()); |
1429 } | |
1430 | |
1431 | |
1432 void LinkResolver::resolve_invokestatic(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { | |
1433 KlassHandle resolved_klass; | |
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1434 Symbol* method_name = NULL; |
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1435 Symbol* method_signature = NULL; |
0 | 1436 KlassHandle current_klass; |
1437 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
1438 resolve_static_call(result, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); | |
1439 } | |
1440 | |
1441 | |
1442 void LinkResolver::resolve_invokespecial(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { | |
1443 KlassHandle resolved_klass; | |
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1444 Symbol* method_name = NULL; |
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1445 Symbol* method_signature = NULL; |
0 | 1446 KlassHandle current_klass; |
1447 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
1448 resolve_special_call(result, resolved_klass, method_name, method_signature, current_klass, true, CHECK); | |
1449 } | |
1450 | |
1451 | |
1452 void LinkResolver::resolve_invokevirtual(CallInfo& result, Handle recv, | |
1453 constantPoolHandle pool, int index, | |
1454 TRAPS) { | |
1455 | |
1456 KlassHandle resolved_klass; | |
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1457 Symbol* method_name = NULL; |
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1458 Symbol* method_signature = NULL; |
0 | 1459 KlassHandle current_klass; |
1460 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
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1461 KlassHandle recvrKlass (THREAD, recv.is_null() ? (Klass*)NULL : recv->klass()); |
0 | 1462 resolve_virtual_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
1463 } | |
1464 | |
1465 | |
1466 void LinkResolver::resolve_invokeinterface(CallInfo& result, Handle recv, constantPoolHandle pool, int index, TRAPS) { | |
1467 KlassHandle resolved_klass; | |
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1468 Symbol* method_name = NULL; |
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1469 Symbol* method_signature = NULL; |
0 | 1470 KlassHandle current_klass; |
1471 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
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1472 KlassHandle recvrKlass (THREAD, recv.is_null() ? (Klass*)NULL : recv->klass()); |
0 | 1473 resolve_interface_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
1474 } | |
1475 | |
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1476 |
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1477 void LinkResolver::resolve_invokehandle(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { |
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1478 assert(EnableInvokeDynamic, ""); |
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1479 // This guy is reached from InterpreterRuntime::resolve_invokehandle. |
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1480 KlassHandle resolved_klass; |
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1481 Symbol* method_name = NULL; |
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1482 Symbol* method_signature = NULL; |
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1483 KlassHandle current_klass; |
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1484 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); |
9082 | 1485 if (TraceMethodHandles) { |
1486 ResourceMark rm(THREAD); | |
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1487 tty->print_cr("resolve_invokehandle %s %s", method_name->as_C_string(), method_signature->as_C_string()); |
9082 | 1488 } |
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1489 resolve_handle_call(result, resolved_klass, method_name, method_signature, current_klass, CHECK); |
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1490 } |
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1491 |
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1492 void LinkResolver::resolve_handle_call(CallInfo& result, KlassHandle resolved_klass, |
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1493 Symbol* method_name, Symbol* method_signature, |
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1494 KlassHandle current_klass, |
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1495 TRAPS) { |
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1496 // JSR 292: this must be an implicitly generated method MethodHandle.invokeExact(*...) or similar |
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1497 assert(resolved_klass() == SystemDictionary::MethodHandle_klass(), ""); |
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1498 assert(MethodHandles::is_signature_polymorphic_name(method_name), ""); |
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1499 methodHandle resolved_method; |
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1500 Handle resolved_appendix; |
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1501 Handle resolved_method_type; |
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1502 lookup_polymorphic_method(resolved_method, resolved_klass, |
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1503 method_name, method_signature, |
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1504 current_klass, &resolved_appendix, &resolved_method_type, CHECK); |
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1505 result.set_handle(resolved_method, resolved_appendix, resolved_method_type, CHECK); |
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1506 } |
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1507 |
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1508 |
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1509 void LinkResolver::resolve_invokedynamic(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { |
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1510 assert(EnableInvokeDynamic, ""); |
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1511 |
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1512 //resolve_pool(<resolved_klass>, method_name, method_signature, current_klass, pool, index, CHECK); |
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1513 Symbol* method_name = pool->name_ref_at(index); |
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1514 Symbol* method_signature = pool->signature_ref_at(index); |
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1515 KlassHandle current_klass = KlassHandle(THREAD, pool->pool_holder()); |
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1516 |
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1517 // Resolve the bootstrap specifier (BSM + optional arguments). |
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1518 Handle bootstrap_specifier; |
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1519 // Check if CallSite has been bound already: |
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1520 ConstantPoolCacheEntry* cpce = pool->invokedynamic_cp_cache_entry_at(index); |
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1521 if (cpce->is_f1_null()) { |
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1522 int pool_index = cpce->constant_pool_index(); |
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1523 oop bsm_info = pool->resolve_bootstrap_specifier_at(pool_index, CHECK); |
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1524 assert(bsm_info != NULL, ""); |
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1525 // FIXME: Cache this once per BootstrapMethods entry, not once per CONSTANT_InvokeDynamic. |
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1526 bootstrap_specifier = Handle(THREAD, bsm_info); |
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1527 } |
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1528 if (!cpce->is_f1_null()) { |
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1529 methodHandle method( THREAD, cpce->f1_as_method()); |
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1530 Handle appendix( THREAD, cpce->appendix_if_resolved(pool)); |
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1531 Handle method_type(THREAD, cpce->method_type_if_resolved(pool)); |
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1532 result.set_handle(method, appendix, method_type, CHECK); |
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1533 return; |
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1534 } |
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1535 |
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1536 if (TraceMethodHandles) { |
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1537 ResourceMark rm(THREAD); |
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1538 tty->print_cr("resolve_invokedynamic #%d %s %s", |
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1539 ConstantPool::decode_invokedynamic_index(index), |
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1540 method_name->as_C_string(), method_signature->as_C_string()); |
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1541 tty->print(" BSM info: "); bootstrap_specifier->print(); |
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1542 } |
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1543 |
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1544 resolve_dynamic_call(result, bootstrap_specifier, method_name, method_signature, current_klass, CHECK); |
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1545 } |
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1546 |
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1547 void LinkResolver::resolve_dynamic_call(CallInfo& result, |
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1548 Handle bootstrap_specifier, |
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1549 Symbol* method_name, Symbol* method_signature, |
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1550 KlassHandle current_klass, |
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1551 TRAPS) { |
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1552 // JSR 292: this must resolve to an implicitly generated method MH.linkToCallSite(*...) |
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1553 // The appendix argument is likely to be a freshly-created CallSite. |
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1554 Handle resolved_appendix; |
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1555 Handle resolved_method_type; |
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1556 methodHandle resolved_method = |
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1557 SystemDictionary::find_dynamic_call_site_invoker(current_klass, |
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1558 bootstrap_specifier, |
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1559 method_name, method_signature, |
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1560 &resolved_appendix, |
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1561 &resolved_method_type, |
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1562 THREAD); |
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1563 if (HAS_PENDING_EXCEPTION) { |
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1564 if (TraceMethodHandles) { |
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1565 tty->print_cr("invokedynamic throws BSME for "INTPTR_FORMAT, (void *)PENDING_EXCEPTION); |
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1566 PENDING_EXCEPTION->print(); |
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1567 } |
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1568 if (PENDING_EXCEPTION->is_a(SystemDictionary::BootstrapMethodError_klass())) { |
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1569 // throw these guys, since they are already wrapped |
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1570 return; |
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1571 } |
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1572 if (!PENDING_EXCEPTION->is_a(SystemDictionary::LinkageError_klass())) { |
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1573 // intercept only LinkageErrors which might have failed to wrap |
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1574 return; |
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1575 } |
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1576 // See the "Linking Exceptions" section for the invokedynamic instruction in the JVMS. |
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1577 Handle nested_exception(THREAD, PENDING_EXCEPTION); |
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1578 CLEAR_PENDING_EXCEPTION; |
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1579 THROW_CAUSE(vmSymbols::java_lang_BootstrapMethodError(), nested_exception) |
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1580 } |
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1581 result.set_handle(resolved_method, resolved_appendix, resolved_method_type, CHECK); |
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1582 } |
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1583 |
0 | 1584 //------------------------------------------------------------------------------------------------------------------------ |
1585 #ifndef PRODUCT | |
1586 | |
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1587 void CallInfo::print() { |
0 | 1588 ResourceMark rm; |
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1589 const char* kindstr = "unknown"; |
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1590 switch (_call_kind) { |
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1591 case direct_call: kindstr = "direct"; break; |
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1592 case vtable_call: kindstr = "vtable"; break; |
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1593 case itable_call: kindstr = "itable"; break; |
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1594 } |
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1595 tty->print_cr("Call %s@%d %s", kindstr, _call_index, |
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1596 _resolved_method.is_null() ? "(none)" : _resolved_method->name_and_sig_as_C_string()); |
0 | 1597 } |
1598 | |
1599 #endif |