Mercurial > hg > truffle
annotate src/share/vm/interpreter/linkResolver.cpp @ 12942:ee99e1a7c5fb
Merge
| author | ccheung |
|---|---|
| date | Fri, 18 Oct 2013 19:44:40 -0700 |
| parents | d248425bcfe8 8f4bb1773fd9 |
| children | 662c154d2749 |
| rev | line source |
|---|---|
| 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); |
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268 while (!result.is_null() && result->is_static() && result->method_holder()->super() != NULL) { |
| 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, | |
|
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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); |
|
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1168 if (selected_method->is_default_method()) { |
|
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1169 tty->print("default"); |
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1170 } |
|
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1171 if (selected_method->is_overpass()) { |
|
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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, | |
|
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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 | |
|
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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 | |
|
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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]; |
|
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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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(), |
|
36b97be47bde
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|
1212 resolved_method->name(), |
|
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|
1213 resolved_method->signature())); |
|
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1214 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
|
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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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
jcoomes
parents:
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diff
changeset
|
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
3582bf76420e
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diff
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|
1229 resolved_method->name(), |
|
3582bf76420e
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diff
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|
1230 resolved_method->signature(), CHECK); |
|
12264
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8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
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|
1231 if (sel_method.is_null() && !check_null_and_abstract) { |
|
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
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|
1232 // In theory this is a harmless placeholder value, but |
|
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
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|
1233 // in practice leaving in null affects the nsk default method tests. |
|
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
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|
1234 // This needs further study. |
|
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8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
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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
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8006267: InterfaceMethod_ref should allow invokestatic and invokespecial
bharadwaj
parents:
9082
diff
changeset
|
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())); |
|
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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()) { |
|
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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"); |
|
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
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|
1266 result.set_virtual(resolved_klass, recv_klass, resolved_method, sel_method, vtable_index, CHECK); |
|
b2e698d2276c
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|
1267 return; |
|
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|
1268 } |
|
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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) { |
|
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|
1272 ResourceMark rm(THREAD); |
|
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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()), |
|
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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changeset
|
1275 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
|
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
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(), |
|
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1278 resolved_method->signature()), |
|
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|
1279 sel_method->method_holder()->internal_name() |
|
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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1280 ); |
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1281 sel_method->access_flags().print_on(tty); |
|
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1282 if (sel_method->is_default_method()) { |
|
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1283 tty->print("default"); |
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1284 } |
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1285 if (sel_method->is_overpass()) { |
|
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1286 tty->print("overpass"); |
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1287 } |
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1288 tty->cr(); |
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1289 } |
|
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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, | |
|
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1296 Symbol* method_name, |
|
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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, | |
|
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1313 Symbol* method_name, |
|
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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, | |
|
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1331 Symbol* name, |
|
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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, | |
|
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1347 Symbol* name, |
|
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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, | |
|
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1363 Symbol* name, |
|
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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; | |
|
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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, | |
|
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1378 Symbol* name, |
|
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|
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 |