Mercurial > hg > truffle
annotate src/share/vm/interpreter/linkResolver.cpp @ 12934:d248425bcfe8
8024804: Crash when InterfaceMethodref resolves to Object.registerNatives
Summary: Added check for NULL prior to continuation of method look up to avoid runtime crash during look up of Object's superclass' methods.
Reviewed-by: coleenp, hseigel
Contributed-by: lois.foltan@oracle.com
| author | hseigel |
|---|---|
| date | Wed, 16 Oct 2013 14:32:05 -0400 |
| parents | 2f8728d92483 |
| children | ee99e1a7c5fb |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 6934 | 26 #include "classfile/defaultMethods.hpp" |
| 1972 | 27 #include "classfile/systemDictionary.hpp" |
| 28 #include "classfile/vmSymbols.hpp" | |
| 29 #include "compiler/compileBroker.hpp" | |
| 30 #include "gc_interface/collectedHeap.inline.hpp" | |
| 31 #include "interpreter/bytecode.hpp" | |
| 32 #include "interpreter/interpreterRuntime.hpp" | |
| 33 #include "interpreter/linkResolver.hpp" | |
| 34 #include "memory/resourceArea.hpp" | |
| 35 #include "memory/universe.inline.hpp" | |
| 36 #include "oops/instanceKlass.hpp" | |
| 37 #include "oops/objArrayOop.hpp" | |
| 38 #include "prims/methodHandles.hpp" | |
| 39 #include "prims/nativeLookup.hpp" | |
| 40 #include "runtime/compilationPolicy.hpp" | |
| 41 #include "runtime/fieldDescriptor.hpp" | |
| 42 #include "runtime/frame.inline.hpp" | |
| 43 #include "runtime/handles.inline.hpp" | |
| 44 #include "runtime/reflection.hpp" | |
| 45 #include "runtime/signature.hpp" | |
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46 #include "runtime/thread.inline.hpp" |
| 1972 | 47 #include "runtime/vmThread.hpp" |
| 0 | 48 |
| 49 | |
| 50 //------------------------------------------------------------------------------------------------------------------------ | |
| 51 // Implementation of CallInfo | |
| 52 | |
| 53 | |
| 54 void CallInfo::set_static(KlassHandle resolved_klass, methodHandle resolved_method, TRAPS) { | |
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55 int vtable_index = Method::nonvirtual_vtable_index; |
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56 set_common(resolved_klass, resolved_klass, resolved_method, resolved_method, CallInfo::direct_call, vtable_index, CHECK); |
| 0 | 57 } |
| 58 | |
| 59 | |
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60 void CallInfo::set_interface(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int itable_index, TRAPS) { |
| 0 | 61 // This is only called for interface methods. If the resolved_method |
| 62 // comes from java/lang/Object, it can be the subject of a virtual call, so | |
| 63 // we should pick the vtable index from the resolved method. | |
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64 // In that case, the caller must call set_virtual instead of set_interface. |
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65 assert(resolved_method->method_holder()->is_interface(), ""); |
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66 assert(itable_index == resolved_method()->itable_index(), ""); |
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67 set_common(resolved_klass, selected_klass, resolved_method, selected_method, CallInfo::itable_call, itable_index, CHECK); |
| 0 | 68 } |
| 69 | |
| 70 void CallInfo::set_virtual(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index, TRAPS) { | |
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71 assert(vtable_index >= 0 || vtable_index == Method::nonvirtual_vtable_index, "valid index"); |
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72 assert(vtable_index < 0 || !resolved_method->has_vtable_index() || vtable_index == resolved_method->vtable_index(), ""); |
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73 CallKind kind = (vtable_index >= 0 && !resolved_method->can_be_statically_bound() ? CallInfo::vtable_call : CallInfo::direct_call); |
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74 set_common(resolved_klass, selected_klass, resolved_method, selected_method, kind, vtable_index, CHECK); |
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75 assert(!resolved_method->is_compiled_lambda_form(), "these must be handled via an invokehandle call"); |
| 0 | 76 } |
| 77 | |
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78 void CallInfo::set_handle(methodHandle resolved_method, Handle resolved_appendix, Handle resolved_method_type, TRAPS) { |
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79 if (resolved_method.is_null()) { |
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80 THROW_MSG(vmSymbols::java_lang_InternalError(), "resolved method is null"); |
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81 } |
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82 KlassHandle resolved_klass = SystemDictionary::MethodHandle_klass(); |
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83 assert(resolved_method->intrinsic_id() == vmIntrinsics::_invokeBasic || |
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84 resolved_method->is_compiled_lambda_form(), |
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85 "linkMethod must return one of these"); |
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86 int vtable_index = Method::nonvirtual_vtable_index; |
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87 assert(!resolved_method->has_vtable_index(), ""); |
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88 set_common(resolved_klass, resolved_klass, resolved_method, resolved_method, CallInfo::direct_call, vtable_index, CHECK); |
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89 _resolved_appendix = resolved_appendix; |
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90 _resolved_method_type = resolved_method_type; |
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91 } |
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92 |
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93 void CallInfo::set_common(KlassHandle resolved_klass, |
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94 KlassHandle selected_klass, |
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95 methodHandle resolved_method, |
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96 methodHandle selected_method, |
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97 CallKind kind, |
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98 int index, |
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99 TRAPS) { |
| 0 | 100 assert(resolved_method->signature() == selected_method->signature(), "signatures must correspond"); |
| 101 _resolved_klass = resolved_klass; | |
| 102 _selected_klass = selected_klass; | |
| 103 _resolved_method = resolved_method; | |
| 104 _selected_method = selected_method; | |
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105 _call_kind = kind; |
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106 _call_index = index; |
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107 _resolved_appendix = Handle(); |
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108 DEBUG_ONLY(verify()); // verify before making side effects |
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109 |
| 1783 | 110 if (CompilationPolicy::must_be_compiled(selected_method)) { |
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111 // This path is unusual, mostly used by the '-Xcomp' stress test mode. |
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112 |
| 1783 | 113 // Note: with several active threads, the must_be_compiled may be true |
| 114 // while can_be_compiled is false; remove assert | |
| 115 // assert(CompilationPolicy::can_be_compiled(selected_method), "cannot compile"); | |
| 0 | 116 if (THREAD->is_Compiler_thread()) { |
| 117 // don't force compilation, resolve was on behalf of compiler | |
| 118 return; | |
| 119 } | |
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120 if (selected_method->method_holder()->is_not_initialized()) { |
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121 // 'is_not_initialized' means not only '!is_initialized', but also that |
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122 // initialization has not been started yet ('!being_initialized') |
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123 // Do not force compilation of methods in uninitialized classes. |
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124 // Note that doing this would throw an assert later, |
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125 // in CompileBroker::compile_method. |
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126 // We sometimes use the link resolver to do reflective lookups |
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127 // even before classes are initialized. |
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128 return; |
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129 } |
| 0 | 130 CompileBroker::compile_method(selected_method, InvocationEntryBci, |
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131 CompilationPolicy::policy()->initial_compile_level(), |
| 1783 | 132 methodHandle(), 0, "must_be_compiled", CHECK); |
| 0 | 133 } |
| 134 } | |
| 135 | |
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136 // utility query for unreflecting a method |
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137 CallInfo::CallInfo(Method* resolved_method, Klass* resolved_klass) { |
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138 Klass* resolved_method_holder = resolved_method->method_holder(); |
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139 if (resolved_klass == NULL) { // 2nd argument defaults to holder of 1st |
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140 resolved_klass = resolved_method_holder; |
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141 } |
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142 _resolved_klass = resolved_klass; |
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143 _selected_klass = resolved_klass; |
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144 _resolved_method = resolved_method; |
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145 _selected_method = resolved_method; |
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146 // classify: |
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147 CallKind kind = CallInfo::unknown_kind; |
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148 int index = resolved_method->vtable_index(); |
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149 if (resolved_method->can_be_statically_bound()) { |
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150 kind = CallInfo::direct_call; |
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151 } else if (!resolved_method_holder->is_interface()) { |
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152 // Could be an Object method inherited into an interface, but still a vtable call. |
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153 kind = CallInfo::vtable_call; |
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154 } else if (!resolved_klass->is_interface()) { |
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155 // A miranda method. Compute the vtable index. |
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156 ResourceMark rm; |
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157 klassVtable* vt = InstanceKlass::cast(resolved_klass)->vtable(); |
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158 index = vt->index_of_miranda(resolved_method->name(), |
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159 resolved_method->signature()); |
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160 kind = CallInfo::vtable_call; |
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161 } else { |
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162 // A regular interface call. |
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163 kind = CallInfo::itable_call; |
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164 index = resolved_method->itable_index(); |
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165 } |
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166 assert(index == Method::nonvirtual_vtable_index || index >= 0, err_msg("bad index %d", index)); |
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167 _call_kind = kind; |
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168 _call_index = index; |
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169 _resolved_appendix = Handle(); |
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170 DEBUG_ONLY(verify()); |
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171 } |
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172 |
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173 #ifdef ASSERT |
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174 void CallInfo::verify() { |
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175 switch (call_kind()) { // the meaning and allowed value of index depends on kind |
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176 case CallInfo::direct_call: |
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177 if (_call_index == Method::nonvirtual_vtable_index) break; |
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178 // else fall through to check vtable index: |
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179 case CallInfo::vtable_call: |
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180 assert(resolved_klass()->verify_vtable_index(_call_index), ""); |
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181 break; |
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182 case CallInfo::itable_call: |
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183 assert(resolved_method()->method_holder()->verify_itable_index(_call_index), ""); |
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184 break; |
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185 case CallInfo::unknown_kind: |
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186 assert(call_kind() != CallInfo::unknown_kind, "CallInfo must be set"); |
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187 break; |
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188 default: |
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189 fatal(err_msg_res("Unexpected call kind %d", call_kind())); |
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190 } |
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191 } |
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192 #endif //ASSERT |
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193 |
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194 |
| 0 | 195 |
| 196 //------------------------------------------------------------------------------------------------------------------------ | |
| 197 // Klass resolution | |
| 198 | |
| 199 void LinkResolver::check_klass_accessability(KlassHandle ref_klass, KlassHandle sel_klass, TRAPS) { | |
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200 if (!Reflection::verify_class_access(ref_klass(), |
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201 sel_klass(), |
| 0 | 202 true)) { |
| 203 ResourceMark rm(THREAD); | |
| 204 Exceptions::fthrow( | |
| 205 THREAD_AND_LOCATION, | |
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206 vmSymbols::java_lang_IllegalAccessError(), |
| 0 | 207 "tried to access class %s from class %s", |
| 208 sel_klass->external_name(), | |
| 209 ref_klass->external_name() | |
| 210 ); | |
| 211 return; | |
| 212 } | |
| 213 } | |
| 214 | |
| 215 void LinkResolver::resolve_klass(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) { | |
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216 Klass* result_oop = pool->klass_ref_at(index, CHECK); |
| 0 | 217 result = KlassHandle(THREAD, result_oop); |
| 218 } | |
| 219 | |
| 220 //------------------------------------------------------------------------------------------------------------------------ | |
| 221 // Method resolution | |
| 222 // | |
| 223 // According to JVM spec. $5.4.3c & $5.4.3d | |
| 224 | |
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225 // Look up method in klasses, including static methods |
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226 // Then look up local default methods |
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227 void LinkResolver::lookup_method_in_klasses(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
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228 Method* result_oop = klass->uncached_lookup_method(name, signature); |
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229 if (result_oop == NULL) { |
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230 Array<Method*>* default_methods = InstanceKlass::cast(klass())->default_methods(); |
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231 if (default_methods != NULL) { |
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232 result_oop = InstanceKlass::find_method(default_methods, name, signature); |
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233 } |
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234 } |
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235 |
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236 if (EnableInvokeDynamic && result_oop != NULL) { |
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237 vmIntrinsics::ID iid = result_oop->intrinsic_id(); |
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238 if (MethodHandles::is_signature_polymorphic(iid)) { |
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239 // Do not link directly to these. The VM must produce a synthetic one using lookup_polymorphic_method. |
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240 return; |
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241 } |
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242 } |
| 0 | 243 result = methodHandle(THREAD, result_oop); |
| 244 } | |
| 245 | |
| 246 // returns first instance method | |
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247 // Looks up method in classes, then looks up local default methods |
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248 void LinkResolver::lookup_instance_method_in_klasses(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
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249 Method* result_oop = klass->uncached_lookup_method(name, signature); |
| 0 | 250 result = methodHandle(THREAD, result_oop); |
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251 while (!result.is_null() && result->is_static() && result->method_holder()->super() != NULL) { |
| 6983 | 252 klass = KlassHandle(THREAD, result->method_holder()->super()); |
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253 result = methodHandle(THREAD, klass->uncached_lookup_method(name, signature)); |
| 0 | 254 } |
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255 |
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256 if (result.is_null()) { |
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257 Array<Method*>* default_methods = InstanceKlass::cast(klass())->default_methods(); |
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258 if (default_methods != NULL) { |
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259 result = methodHandle(InstanceKlass::find_method(default_methods, name, signature)); |
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260 assert(result.is_null() || !result->is_static(), "static defaults not allowed"); |
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261 } |
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262 } |
| 0 | 263 } |
| 264 | |
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265 int LinkResolver::vtable_index_of_interface_method(KlassHandle klass, |
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266 methodHandle resolved_method, TRAPS) { |
| 0 | 267 |
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268 int vtable_index = Method::invalid_vtable_index; |
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269 Symbol* name = resolved_method->name(); |
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270 Symbol* signature = resolved_method->signature(); |
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271 |
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272 // First check in default method array |
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273 if (!resolved_method->is_abstract() && |
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274 (InstanceKlass::cast(klass())->default_methods() != NULL)) { |
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275 int index = InstanceKlass::find_method_index(InstanceKlass::cast(klass())->default_methods(), name, signature); |
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276 if (index >= 0 ) { |
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277 vtable_index = InstanceKlass::cast(klass())->default_vtable_indices()->at(index); |
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278 } |
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279 } |
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280 if (vtable_index == Method::invalid_vtable_index) { |
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281 // get vtable_index for miranda methods |
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282 ResourceMark rm(THREAD); |
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283 klassVtable *vt = InstanceKlass::cast(klass())->vtable(); |
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284 vtable_index = vt->index_of_miranda(name, signature); |
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285 } |
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286 return vtable_index; |
| 0 | 287 } |
| 288 | |
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289 void LinkResolver::lookup_method_in_interfaces(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
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290 InstanceKlass *ik = InstanceKlass::cast(klass()); |
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291 result = methodHandle(THREAD, ik->lookup_method_in_all_interfaces(name, signature)); |
| 0 | 292 } |
| 293 | |
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294 void LinkResolver::lookup_polymorphic_method(methodHandle& result, |
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295 KlassHandle klass, Symbol* name, Symbol* full_signature, |
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296 KlassHandle current_klass, |
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297 Handle *appendix_result_or_null, |
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298 Handle *method_type_result, |
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299 TRAPS) { |
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300 vmIntrinsics::ID iid = MethodHandles::signature_polymorphic_name_id(name); |
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301 if (TraceMethodHandles) { |
| 9082 | 302 ResourceMark rm(THREAD); |
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303 tty->print_cr("lookup_polymorphic_method iid=%s %s.%s%s", |
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304 vmIntrinsics::name_at(iid), klass->external_name(), |
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305 name->as_C_string(), full_signature->as_C_string()); |
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306 } |
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307 if (EnableInvokeDynamic && |
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308 klass() == SystemDictionary::MethodHandle_klass() && |
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309 iid != vmIntrinsics::_none) { |
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310 if (MethodHandles::is_signature_polymorphic_intrinsic(iid)) { |
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311 // Most of these do not need an up-call to Java to resolve, so can be done anywhere. |
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312 // Do not erase last argument type (MemberName) if it is a static linkTo method. |
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313 bool keep_last_arg = MethodHandles::is_signature_polymorphic_static(iid); |
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314 TempNewSymbol basic_signature = |
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315 MethodHandles::lookup_basic_type_signature(full_signature, keep_last_arg, CHECK); |
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316 if (TraceMethodHandles) { |
| 9082 | 317 ResourceMark rm(THREAD); |
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318 tty->print_cr("lookup_polymorphic_method %s %s => basic %s", |
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319 name->as_C_string(), |
|
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320 full_signature->as_C_string(), |
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321 basic_signature->as_C_string()); |
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322 } |
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323 result = SystemDictionary::find_method_handle_intrinsic(iid, |
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324 basic_signature, |
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325 CHECK); |
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326 if (result.not_null()) { |
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327 assert(result->is_method_handle_intrinsic(), "MH.invokeBasic or MH.linkTo* intrinsic"); |
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328 assert(result->intrinsic_id() != vmIntrinsics::_invokeGeneric, "wrong place to find this"); |
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329 assert(basic_signature == result->signature(), "predict the result signature"); |
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330 if (TraceMethodHandles) { |
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331 tty->print("lookup_polymorphic_method => intrinsic "); |
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332 result->print_on(tty); |
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333 } |
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334 return; |
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335 } |
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336 } else if (iid == vmIntrinsics::_invokeGeneric |
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337 && !THREAD->is_Compiler_thread() |
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338 && appendix_result_or_null != NULL) { |
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339 // This is a method with type-checking semantics. |
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340 // We will ask Java code to spin an adapter method for it. |
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341 if (!MethodHandles::enabled()) { |
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342 // Make sure the Java part of the runtime has been booted up. |
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343 Klass* natives = SystemDictionary::MethodHandleNatives_klass(); |
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344 if (natives == NULL || InstanceKlass::cast(natives)->is_not_initialized()) { |
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345 SystemDictionary::resolve_or_fail(vmSymbols::java_lang_invoke_MethodHandleNatives(), |
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346 Handle(), |
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347 Handle(), |
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348 true, |
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349 CHECK); |
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350 } |
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351 } |
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352 |
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353 Handle appendix; |
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354 Handle method_type; |
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355 result = SystemDictionary::find_method_handle_invoker(name, |
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356 full_signature, |
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357 current_klass, |
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358 &appendix, |
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359 &method_type, |
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360 CHECK); |
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361 if (TraceMethodHandles) { |
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362 tty->print("lookup_polymorphic_method => (via Java) "); |
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363 result->print_on(tty); |
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364 tty->print(" lookup_polymorphic_method => appendix = "); |
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365 if (appendix.is_null()) tty->print_cr("(none)"); |
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366 else appendix->print_on(tty); |
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367 } |
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368 if (result.not_null()) { |
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369 #ifdef ASSERT |
| 9082 | 370 ResourceMark rm(THREAD); |
| 371 | |
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372 TempNewSymbol basic_signature = |
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373 MethodHandles::lookup_basic_type_signature(full_signature, CHECK); |
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374 int actual_size_of_params = result->size_of_parameters(); |
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375 int expected_size_of_params = ArgumentSizeComputer(basic_signature).size(); |
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376 // +1 for MethodHandle.this, +1 for trailing MethodType |
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377 if (!MethodHandles::is_signature_polymorphic_static(iid)) expected_size_of_params += 1; |
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378 if (appendix.not_null()) expected_size_of_params += 1; |
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379 if (actual_size_of_params != expected_size_of_params) { |
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380 tty->print_cr("*** basic_signature=%s", basic_signature->as_C_string()); |
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381 tty->print_cr("*** result for %s: ", vmIntrinsics::name_at(iid)); |
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382 result->print(); |
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383 } |
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384 assert(actual_size_of_params == expected_size_of_params, |
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385 err_msg("%d != %d", actual_size_of_params, expected_size_of_params)); |
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386 #endif //ASSERT |
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387 |
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388 assert(appendix_result_or_null != NULL, ""); |
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389 (*appendix_result_or_null) = appendix; |
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390 (*method_type_result) = method_type; |
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391 return; |
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392 } |
| 710 | 393 } |
| 394 } | |
| 395 } | |
| 396 | |
| 0 | 397 void LinkResolver::check_method_accessability(KlassHandle ref_klass, |
| 398 KlassHandle resolved_klass, | |
| 399 KlassHandle sel_klass, | |
| 400 methodHandle sel_method, | |
| 401 TRAPS) { | |
| 402 | |
| 403 AccessFlags flags = sel_method->access_flags(); | |
| 404 | |
| 405 // Special case: arrays always override "clone". JVMS 2.15. | |
| 406 // If the resolved klass is an array class, and the declaring class | |
| 407 // is java.lang.Object and the method is "clone", set the flags | |
| 408 // to public. | |
| 409 // | |
| 410 // We'll check for the method name first, as that's most likely | |
| 411 // to be false (so we'll short-circuit out of these tests). | |
| 412 if (sel_method->name() == vmSymbols::clone_name() && | |
| 1142 | 413 sel_klass() == SystemDictionary::Object_klass() && |
| 0 | 414 resolved_klass->oop_is_array()) { |
| 415 // We need to change "protected" to "public". | |
| 416 assert(flags.is_protected(), "clone not protected?"); | |
| 417 jint new_flags = flags.as_int(); | |
| 418 new_flags = new_flags & (~JVM_ACC_PROTECTED); | |
| 419 new_flags = new_flags | JVM_ACC_PUBLIC; | |
| 420 flags.set_flags(new_flags); | |
| 421 } | |
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422 // assert(extra_arg_result_or_null != NULL, "must be able to return extra argument"); |
| 0 | 423 |
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424 if (!Reflection::verify_field_access(ref_klass(), |
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425 resolved_klass(), |
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426 sel_klass(), |
| 0 | 427 flags, |
| 428 true)) { | |
| 429 ResourceMark rm(THREAD); | |
| 430 Exceptions::fthrow( | |
| 431 THREAD_AND_LOCATION, | |
|
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432 vmSymbols::java_lang_IllegalAccessError(), |
| 0 | 433 "tried to access method %s.%s%s from class %s", |
| 434 sel_klass->external_name(), | |
| 435 sel_method->name()->as_C_string(), | |
| 436 sel_method->signature()->as_C_string(), | |
| 437 ref_klass->external_name() | |
| 438 ); | |
| 439 return; | |
| 440 } | |
| 441 } | |
| 442 | |
|
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443 void LinkResolver::resolve_method_statically(methodHandle& resolved_method, KlassHandle& resolved_klass, |
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444 Bytecodes::Code code, constantPoolHandle pool, int index, TRAPS) { |
|
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445 // This method is used only |
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446 // (1) in C2 from InlineTree::ok_to_inline (via ciMethod::check_call), |
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447 // and |
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448 // (2) in Bytecode_invoke::static_target |
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449 // It appears to fail when applied to an invokeinterface call site. |
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450 // FIXME: Remove this method and ciMethod::check_call; refactor to use the other LinkResolver entry points. |
| 0 | 451 // resolve klass |
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452 if (code == Bytecodes::_invokedynamic) { |
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453 resolved_klass = SystemDictionary::MethodHandle_klass(); |
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454 Symbol* method_name = vmSymbols::invoke_name(); |
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455 Symbol* method_signature = pool->signature_ref_at(index); |
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456 KlassHandle current_klass(THREAD, pool->pool_holder()); |
|
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457 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, false, CHECK); |
|
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458 return; |
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459 } |
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460 |
| 0 | 461 resolve_klass(resolved_klass, pool, index, CHECK); |
| 462 | |
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463 Symbol* method_name = pool->name_ref_at(index); |
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464 Symbol* method_signature = pool->signature_ref_at(index); |
| 0 | 465 KlassHandle current_klass(THREAD, pool->pool_holder()); |
| 466 | |
|
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467 if (pool->has_preresolution() |
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468 || (resolved_klass() == SystemDictionary::MethodHandle_klass() && |
|
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469 MethodHandles::is_signature_polymorphic_name(resolved_klass(), method_name))) { |
|
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470 Method* result_oop = ConstantPool::method_at_if_loaded(pool, index); |
|
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471 if (result_oop != NULL) { |
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472 resolved_method = methodHandle(THREAD, result_oop); |
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473 return; |
|
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474 } |
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475 } |
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476 |
|
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477 if (code == Bytecodes::_invokeinterface) { |
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478 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); |
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479 } else if (code == Bytecodes::_invokevirtual) { |
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480 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
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481 } else { |
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482 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, false, CHECK); |
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483 } |
| 0 | 484 } |
| 485 | |
| 486 void LinkResolver::resolve_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
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487 Symbol* method_name, Symbol* method_signature, |
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488 KlassHandle current_klass, bool check_access, |
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489 bool require_methodref, TRAPS) { |
| 0 | 490 |
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491 Handle nested_exception; |
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492 |
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493 // 1. check if methodref required, that resolved_klass is not interfacemethodref |
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494 if (require_methodref && resolved_klass->is_interface()) { |
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495 ResourceMark rm(THREAD); |
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496 char buf[200]; |
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497 jio_snprintf(buf, sizeof(buf), "Found interface %s, but class was expected", |
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498 resolved_klass()->external_name()); |
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499 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
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500 } |
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501 |
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502 // 2. lookup method in resolved klass and its super klasses |
| 0 | 503 lookup_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK); |
| 504 | |
| 505 if (resolved_method.is_null()) { // not found in the class hierarchy | |
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506 // 3. lookup method in all the interfaces implemented by the resolved klass |
| 0 | 507 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); |
| 508 | |
| 509 if (resolved_method.is_null()) { | |
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510 // JSR 292: see if this is an implicitly generated method MethodHandle.linkToVirtual(*...), etc |
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511 lookup_polymorphic_method(resolved_method, resolved_klass, method_name, method_signature, |
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512 current_klass, (Handle*)NULL, (Handle*)NULL, THREAD); |
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513 if (HAS_PENDING_EXCEPTION) { |
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514 nested_exception = Handle(THREAD, PENDING_EXCEPTION); |
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515 CLEAR_PENDING_EXCEPTION; |
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516 } |
| 710 | 517 } |
| 518 | |
| 519 if (resolved_method.is_null()) { | |
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520 // 4. method lookup failed |
| 0 | 521 ResourceMark rm(THREAD); |
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522 THROW_MSG_CAUSE(vmSymbols::java_lang_NoSuchMethodError(), |
| 6983 | 523 Method::name_and_sig_as_C_string(resolved_klass(), |
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524 method_name, |
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525 method_signature), |
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526 nested_exception); |
| 0 | 527 } |
| 528 } | |
| 529 | |
| 530 // 5. check if method is concrete | |
| 531 if (resolved_method->is_abstract() && !resolved_klass->is_abstract()) { | |
| 532 ResourceMark rm(THREAD); | |
| 533 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
| 6983 | 534 Method::name_and_sig_as_C_string(resolved_klass(), |
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535 method_name, |
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536 method_signature)); |
| 0 | 537 } |
| 538 | |
| 539 // 6. access checks, access checking may be turned off when calling from within the VM. | |
| 540 if (check_access) { | |
| 541 assert(current_klass.not_null() , "current_klass should not be null"); | |
| 542 | |
| 543 // check if method can be accessed by the referring class | |
| 544 check_method_accessability(current_klass, | |
| 545 resolved_klass, | |
| 546 KlassHandle(THREAD, resolved_method->method_holder()), | |
| 547 resolved_method, | |
| 548 CHECK); | |
| 549 | |
| 550 // check loader constraints | |
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551 Handle loader (THREAD, InstanceKlass::cast(current_klass())->class_loader()); |
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552 Handle class_loader (THREAD, resolved_method->method_holder()->class_loader()); |
| 0 | 553 { |
| 554 ResourceMark rm(THREAD); | |
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555 Symbol* failed_type_symbol = |
| 0 | 556 SystemDictionary::check_signature_loaders(method_signature, loader, |
| 557 class_loader, true, CHECK); | |
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558 if (failed_type_symbol != NULL) { |
| 0 | 559 const char* msg = "loader constraint violation: when resolving method" |
| 560 " \"%s\" the class loader (instance of %s) of the current class, %s," | |
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561 " and the class loader (instance of %s) for the method's defining class, %s, have" |
| 0 | 562 " different Class objects for the type %s used in the signature"; |
| 6983 | 563 char* sig = Method::name_and_sig_as_C_string(resolved_klass(),method_name,method_signature); |
| 0 | 564 const char* loader1 = SystemDictionary::loader_name(loader()); |
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565 char* current = InstanceKlass::cast(current_klass())->name()->as_C_string(); |
| 0 | 566 const char* loader2 = SystemDictionary::loader_name(class_loader()); |
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567 char* target = InstanceKlass::cast(resolved_method->method_holder()) |
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568 ->name()->as_C_string(); |
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569 char* failed_type_name = failed_type_symbol->as_C_string(); |
| 0 | 570 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + |
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571 strlen(current) + strlen(loader2) + strlen(target) + |
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572 strlen(failed_type_name) + 1; |
| 0 | 573 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
| 574 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, | |
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575 target, failed_type_name); |
| 0 | 576 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); |
| 577 } | |
| 578 } | |
| 579 } | |
| 580 } | |
| 581 | |
| 582 void LinkResolver::resolve_interface_method(methodHandle& resolved_method, | |
| 583 KlassHandle resolved_klass, | |
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584 Symbol* method_name, |
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585 Symbol* method_signature, |
| 0 | 586 KlassHandle current_klass, |
| 587 bool check_access, TRAPS) { | |
| 588 | |
| 589 // check if klass is interface | |
| 590 if (!resolved_klass->is_interface()) { | |
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591 ResourceMark rm(THREAD); |
| 0 | 592 char buf[200]; |
| 6983 | 593 jio_snprintf(buf, sizeof(buf), "Found class %s, but interface was expected", resolved_klass()->external_name()); |
| 0 | 594 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
| 595 } | |
| 596 | |
| 597 // lookup method in this interface or its super, java.lang.Object | |
| 598 lookup_instance_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
| 599 | |
| 600 if (resolved_method.is_null()) { | |
| 601 // lookup method in all the super-interfaces | |
| 602 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
| 603 if (resolved_method.is_null()) { | |
| 604 // no method found | |
| 605 ResourceMark rm(THREAD); | |
| 606 THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(), | |
| 6983 | 607 Method::name_and_sig_as_C_string(resolved_klass(), |
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608 method_name, |
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609 method_signature)); |
| 0 | 610 } |
| 611 } | |
| 612 | |
| 613 if (check_access) { | |
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614 // JDK8 adds non-public interface methods, and accessability check requirement |
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615 assert(current_klass.not_null() , "current_klass should not be null"); |
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616 |
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617 // check if method can be accessed by the referring class |
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618 check_method_accessability(current_klass, |
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619 resolved_klass, |
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620 KlassHandle(THREAD, resolved_method->method_holder()), |
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621 resolved_method, |
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622 CHECK); |
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623 |
| 0 | 624 HandleMark hm(THREAD); |
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625 Handle loader (THREAD, InstanceKlass::cast(current_klass())->class_loader()); |
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626 Handle class_loader (THREAD, resolved_method->method_holder()->class_loader()); |
| 0 | 627 { |
| 628 ResourceMark rm(THREAD); | |
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629 Symbol* failed_type_symbol = |
| 0 | 630 SystemDictionary::check_signature_loaders(method_signature, loader, |
| 631 class_loader, true, CHECK); | |
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632 if (failed_type_symbol != NULL) { |
| 0 | 633 const char* msg = "loader constraint violation: when resolving " |
| 634 "interface method \"%s\" the class loader (instance of %s) of the " | |
| 635 "current class, %s, and the class loader (instance of %s) for " | |
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636 "the method's defining class, %s, have different Class objects for the type %s " |
| 0 | 637 "used in the signature"; |
| 6983 | 638 char* sig = Method::name_and_sig_as_C_string(resolved_klass(),method_name,method_signature); |
| 0 | 639 const char* loader1 = SystemDictionary::loader_name(loader()); |
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640 char* current = InstanceKlass::cast(current_klass())->name()->as_C_string(); |
| 0 | 641 const char* loader2 = SystemDictionary::loader_name(class_loader()); |
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642 char* target = InstanceKlass::cast(resolved_method->method_holder()) |
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643 ->name()->as_C_string(); |
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644 char* failed_type_name = failed_type_symbol->as_C_string(); |
| 0 | 645 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + |
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646 strlen(current) + strlen(loader2) + strlen(target) + |
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647 strlen(failed_type_name) + 1; |
| 0 | 648 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
| 649 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, | |
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650 target, failed_type_name); |
| 0 | 651 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); |
| 652 } | |
| 653 } | |
| 654 } | |
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655 |
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656 if (TraceItables && Verbose) { |
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657 ResourceMark rm(THREAD); |
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658 tty->print("invokeinterface resolved method: caller-class:%s, compile-time-class:%s, method:%s, method_holder:%s, access_flags: ", |
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659 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name()), |
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660 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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661 Method::name_and_sig_as_C_string(resolved_klass(), |
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662 resolved_method->name(), |
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663 resolved_method->signature()), |
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664 resolved_method->method_holder()->internal_name() |
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665 ); |
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666 resolved_method->access_flags().print_on(tty); |
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667 if (resolved_method->is_default_method()) { |
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668 tty->print("default"); |
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669 } |
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670 if (resolved_method->is_overpass()) { |
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671 tty->print("overpass"); |
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672 } |
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673 tty->cr(); |
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674 } |
| 0 | 675 } |
| 676 | |
| 677 //------------------------------------------------------------------------------------------------------------------------ | |
| 678 // Field resolution | |
| 679 | |
| 680 void LinkResolver::check_field_accessability(KlassHandle ref_klass, | |
| 681 KlassHandle resolved_klass, | |
| 682 KlassHandle sel_klass, | |
| 683 fieldDescriptor& fd, | |
| 684 TRAPS) { | |
|
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685 if (!Reflection::verify_field_access(ref_klass(), |
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686 resolved_klass(), |
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687 sel_klass(), |
| 0 | 688 fd.access_flags(), |
| 689 true)) { | |
| 690 ResourceMark rm(THREAD); | |
| 691 Exceptions::fthrow( | |
| 692 THREAD_AND_LOCATION, | |
|
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693 vmSymbols::java_lang_IllegalAccessError(), |
| 0 | 694 "tried to access field %s.%s from class %s", |
| 695 sel_klass->external_name(), | |
| 696 fd.name()->as_C_string(), | |
| 697 ref_klass->external_name() | |
| 698 ); | |
| 699 return; | |
| 700 } | |
| 701 } | |
| 702 | |
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703 void LinkResolver::resolve_field_access(fieldDescriptor& result, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS) { |
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704 // Load these early in case the resolve of the containing klass fails |
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705 Symbol* field = pool->name_ref_at(index); |
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706 Symbol* sig = pool->signature_ref_at(index); |
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707 |
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708 // resolve specified klass |
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709 KlassHandle resolved_klass; |
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710 resolve_klass(resolved_klass, pool, index, CHECK); |
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711 |
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712 KlassHandle current_klass(THREAD, pool->pool_holder()); |
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713 resolve_field(result, resolved_klass, field, sig, current_klass, byte, true, true, CHECK); |
| 0 | 714 } |
| 715 | |
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716 void LinkResolver::resolve_field(fieldDescriptor& fd, KlassHandle resolved_klass, Symbol* field, Symbol* sig, |
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717 KlassHandle current_klass, Bytecodes::Code byte, bool check_access, bool initialize_class, |
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718 TRAPS) { |
| 0 | 719 assert(byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic || |
|
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720 byte == Bytecodes::_getfield || byte == Bytecodes::_putfield || |
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721 (byte == Bytecodes::_nop && !check_access), "bad field access bytecode"); |
| 0 | 722 |
| 723 bool is_static = (byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic); | |
| 724 bool is_put = (byte == Bytecodes::_putfield || byte == Bytecodes::_putstatic); | |
| 725 | |
| 726 // Check if there's a resolved klass containing the field | |
|
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727 if (resolved_klass.is_null()) { |
| 0 | 728 ResourceMark rm(THREAD); |
| 729 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); | |
| 730 } | |
| 731 | |
| 732 // Resolve instance field | |
|
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733 KlassHandle sel_klass(THREAD, InstanceKlass::cast(resolved_klass())->find_field(field, sig, &fd)); |
| 0 | 734 // check if field exists; i.e., if a klass containing the field def has been selected |
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735 if (sel_klass.is_null()) { |
| 0 | 736 ResourceMark rm(THREAD); |
| 737 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); | |
| 738 } | |
| 739 | |
|
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740 if (!check_access) |
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741 // Access checking may be turned off when calling from within the VM. |
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742 return; |
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743 |
| 0 | 744 // check access |
|
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745 check_field_accessability(current_klass, resolved_klass, sel_klass, fd, CHECK); |
| 0 | 746 |
| 747 // check for errors | |
| 748 if (is_static != fd.is_static()) { | |
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749 ResourceMark rm(THREAD); |
| 0 | 750 char msg[200]; |
| 6983 | 751 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 | 752 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), msg); |
| 753 } | |
| 754 | |
| 755 // Final fields can only be accessed from its own class. | |
|
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756 if (is_put && fd.access_flags().is_final() && sel_klass() != current_klass()) { |
| 0 | 757 THROW(vmSymbols::java_lang_IllegalAccessError()); |
| 758 } | |
| 759 | |
| 760 // initialize resolved_klass if necessary | |
| 761 // note 1: the klass which declared the field must be initialized (i.e, sel_klass) | |
| 762 // according to the newest JVM spec (5.5, p.170) - was bug (gri 7/28/99) | |
| 763 // | |
| 764 // note 2: we don't want to force initialization if we are just checking | |
| 765 // if the field access is legal; e.g., during compilation | |
|
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766 if (is_static && initialize_class) { |
| 0 | 767 sel_klass->initialize(CHECK); |
| 768 } | |
| 769 | |
|
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770 if (sel_klass() != current_klass()) { |
| 0 | 771 HandleMark hm(THREAD); |
|
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772 Handle ref_loader (THREAD, InstanceKlass::cast(current_klass())->class_loader()); |
|
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773 Handle sel_loader (THREAD, InstanceKlass::cast(sel_klass())->class_loader()); |
| 0 | 774 { |
| 775 ResourceMark rm(THREAD); | |
|
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776 Symbol* failed_type_symbol = |
|
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777 SystemDictionary::check_signature_loaders(sig, |
| 0 | 778 ref_loader, sel_loader, |
| 779 false, | |
| 780 CHECK); | |
|
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781 if (failed_type_symbol != NULL) { |
| 0 | 782 const char* msg = "loader constraint violation: when resolving field" |
| 783 " \"%s\" the class loader (instance of %s) of the referring class, " | |
| 784 "%s, and the class loader (instance of %s) for the field's resolved " | |
| 785 "type, %s, have different Class objects for that type"; | |
|
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786 char* field_name = field->as_C_string(); |
| 0 | 787 const char* loader1 = SystemDictionary::loader_name(ref_loader()); |
|
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788 char* sel = InstanceKlass::cast(sel_klass())->name()->as_C_string(); |
| 0 | 789 const char* loader2 = SystemDictionary::loader_name(sel_loader()); |
|
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790 char* failed_type_name = failed_type_symbol->as_C_string(); |
| 0 | 791 size_t buflen = strlen(msg) + strlen(field_name) + strlen(loader1) + |
|
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792 strlen(sel) + strlen(loader2) + strlen(failed_type_name) + 1; |
| 0 | 793 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
| 794 jio_snprintf(buf, buflen, msg, field_name, loader1, sel, loader2, | |
| 795 failed_type_name); | |
| 796 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); | |
| 797 } | |
| 798 } | |
| 799 } | |
| 800 | |
| 801 // return information. note that the klass is set to the actual klass containing the | |
| 802 // field, otherwise access of static fields in superclasses will not work. | |
| 803 } | |
| 804 | |
| 805 | |
| 806 //------------------------------------------------------------------------------------------------------------------------ | |
| 807 // Invoke resolution | |
| 808 // | |
| 809 // Naming conventions: | |
| 810 // | |
| 811 // resolved_method the specified method (i.e., static receiver specified via constant pool index) | |
| 812 // sel_method the selected method (selected via run-time lookup; e.g., based on dynamic receiver class) | |
| 813 // resolved_klass the specified klass (i.e., specified via constant pool index) | |
| 814 // recv_klass the receiver klass | |
| 815 | |
| 816 | |
|
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817 void LinkResolver::resolve_static_call(CallInfo& result, KlassHandle& resolved_klass, Symbol* method_name, |
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818 Symbol* method_signature, KlassHandle current_klass, |
| 0 | 819 bool check_access, bool initialize_class, TRAPS) { |
| 820 methodHandle resolved_method; | |
| 821 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
| 6983 | 822 resolved_klass = KlassHandle(THREAD, resolved_method->method_holder()); |
| 0 | 823 |
| 824 // Initialize klass (this should only happen if everything is ok) | |
| 825 if (initialize_class && resolved_klass->should_be_initialized()) { | |
| 826 resolved_klass->initialize(CHECK); | |
| 827 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
| 828 } | |
| 829 | |
| 830 // setup result | |
| 831 result.set_static(resolved_klass, resolved_method, CHECK); | |
| 832 } | |
| 833 | |
| 834 // throws linktime exceptions | |
| 835 void LinkResolver::linktime_resolve_static_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
|
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836 Symbol* method_name, Symbol* method_signature, |
| 0 | 837 KlassHandle current_klass, bool check_access, TRAPS) { |
| 838 | |
|
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839 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, false, CHECK); |
| 0 | 840 assert(resolved_method->name() != vmSymbols::class_initializer_name(), "should have been checked in verifier"); |
| 841 | |
| 842 // check if static | |
| 843 if (!resolved_method->is_static()) { | |
|
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844 ResourceMark rm(THREAD); |
| 0 | 845 char buf[200]; |
| 6983 | 846 jio_snprintf(buf, sizeof(buf), "Expected static method %s", Method::name_and_sig_as_C_string(resolved_klass(), |
| 0 | 847 resolved_method->name(), |
| 848 resolved_method->signature())); | |
| 849 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
| 850 } | |
| 851 } | |
| 852 | |
| 853 | |
|
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854 void LinkResolver::resolve_special_call(CallInfo& result, KlassHandle resolved_klass, Symbol* method_name, |
|
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855 Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS) { |
| 0 | 856 methodHandle resolved_method; |
| 857 linktime_resolve_special_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
| 858 runtime_resolve_special_method(result, resolved_method, resolved_klass, current_klass, check_access, CHECK); | |
| 859 } | |
| 860 | |
| 861 // throws linktime exceptions | |
| 862 void LinkResolver::linktime_resolve_special_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
|
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863 Symbol* method_name, Symbol* method_signature, |
| 0 | 864 KlassHandle current_klass, bool check_access, TRAPS) { |
| 865 | |
|
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866 // Invokespecial is called for multiple special reasons: |
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867 // <init> |
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868 // local private method invocation, for classes and interfaces |
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869 // superclass.method, which can also resolve to a default method |
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870 // and the selected method is recalculated relative to the direct superclass |
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871 // superinterface.method, which explicitly does not check shadowing |
| 6934 | 872 |
|
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873 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, false, CHECK); |
| 0 | 874 |
| 875 // check if method name is <init>, that it is found in same klass as static type | |
| 876 if (resolved_method->name() == vmSymbols::object_initializer_name() && | |
| 877 resolved_method->method_holder() != resolved_klass()) { | |
| 878 ResourceMark rm(THREAD); | |
| 879 Exceptions::fthrow( | |
| 880 THREAD_AND_LOCATION, | |
|
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|
881 vmSymbols::java_lang_NoSuchMethodError(), |
| 0 | 882 "%s: method %s%s not found", |
| 883 resolved_klass->external_name(), | |
| 884 resolved_method->name()->as_C_string(), | |
| 885 resolved_method->signature()->as_C_string() | |
| 886 ); | |
| 887 return; | |
| 888 } | |
| 889 | |
| 890 // check if not static | |
| 891 if (resolved_method->is_static()) { | |
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|
892 ResourceMark rm(THREAD); |
| 0 | 893 char buf[200]; |
| 894 jio_snprintf(buf, sizeof(buf), | |
| 895 "Expecting non-static method %s", | |
| 6983 | 896 Method::name_and_sig_as_C_string(resolved_klass(), |
| 0 | 897 resolved_method->name(), |
| 898 resolved_method->signature())); | |
| 899 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
| 900 } | |
|
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901 |
|
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902 if (TraceItables && Verbose) { |
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903 ResourceMark rm(THREAD); |
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904 tty->print("invokespecial resolved method: caller-class:%s, compile-time-class:%s, method:%s, method_holder:%s, access_flags: ", |
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|
905 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name()), |
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906 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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907 Method::name_and_sig_as_C_string(resolved_klass(), |
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908 resolved_method->name(), |
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909 resolved_method->signature()), |
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910 resolved_method->method_holder()->internal_name() |
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911 ); |
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912 resolved_method->access_flags().print_on(tty); |
|
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913 if (resolved_method->is_default_method()) { |
|
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914 tty->print("default"); |
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915 } |
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916 if (resolved_method->is_overpass()) { |
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917 tty->print("overpass"); |
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918 } |
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919 tty->cr(); |
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920 } |
| 0 | 921 } |
| 922 | |
| 923 // throws runtime exceptions | |
| 924 void LinkResolver::runtime_resolve_special_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, | |
| 925 KlassHandle current_klass, bool check_access, TRAPS) { | |
| 926 | |
| 927 // resolved method is selected method unless we have an old-style lookup | |
|
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928 // for a superclass method |
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929 // Invokespecial for a superinterface, resolved method is selected method, |
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930 // no checks for shadowing |
| 0 | 931 methodHandle sel_method(THREAD, resolved_method()); |
| 932 | |
| 933 // check if this is an old-style super call and do a new lookup if so | |
| 934 { KlassHandle method_klass = KlassHandle(THREAD, | |
| 935 resolved_method->method_holder()); | |
| 936 | |
|
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937 if (check_access && |
| 0 | 938 // a) check if ACC_SUPER flag is set for the current class |
| 8702 | 939 (current_klass->is_super() || !AllowNonVirtualCalls) && |
|
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940 // b) check if the class of the resolved_klass is a superclass |
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941 // (not supertype in order to exclude interface classes) of the current class. |
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942 // This check is not performed for super.invoke for interface methods |
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943 // in super interfaces. |
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944 current_klass->is_subclass_of(resolved_klass()) && |
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945 current_klass() != resolved_klass() && |
| 0 | 946 // c) check if the method is not <init> |
| 947 resolved_method->name() != vmSymbols::object_initializer_name()) { | |
| 948 // Lookup super method | |
| 949 KlassHandle super_klass(THREAD, current_klass->super()); | |
| 950 lookup_instance_method_in_klasses(sel_method, super_klass, | |
|
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951 resolved_method->name(), |
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952 resolved_method->signature(), CHECK); |
| 0 | 953 // check if found |
| 954 if (sel_method.is_null()) { | |
| 955 ResourceMark rm(THREAD); | |
| 956 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
| 6983 | 957 Method::name_and_sig_as_C_string(resolved_klass(), |
| 0 | 958 resolved_method->name(), |
| 959 resolved_method->signature())); | |
| 960 } | |
| 961 } | |
| 962 } | |
| 963 | |
| 964 // check if not static | |
| 965 if (sel_method->is_static()) { | |
|
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966 ResourceMark rm(THREAD); |
| 0 | 967 char buf[200]; |
| 6983 | 968 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", Method::name_and_sig_as_C_string(resolved_klass(), |
| 0 | 969 resolved_method->name(), |
| 970 resolved_method->signature())); | |
| 971 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
| 972 } | |
| 973 | |
| 974 // check if abstract | |
| 975 if (sel_method->is_abstract()) { | |
| 976 ResourceMark rm(THREAD); | |
| 977 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
| 6983 | 978 Method::name_and_sig_as_C_string(resolved_klass(), |
| 0 | 979 sel_method->name(), |
| 980 sel_method->signature())); | |
| 981 } | |
| 982 | |
|
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983 if (TraceItables && Verbose) { |
|
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984 ResourceMark rm(THREAD); |
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985 tty->print("invokespecial selected method: resolved-class:%s, method:%s, method_holder:%s, access_flags: ", |
|
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986 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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987 Method::name_and_sig_as_C_string(resolved_klass(), |
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988 sel_method->name(), |
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989 sel_method->signature()), |
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990 sel_method->method_holder()->internal_name() |
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991 ); |
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992 sel_method->access_flags().print_on(tty); |
|
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993 if (sel_method->is_default_method()) { |
|
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994 tty->print("default"); |
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995 } |
|
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996 if (sel_method->is_overpass()) { |
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997 tty->print("overpass"); |
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998 } |
|
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999 tty->cr(); |
|
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1000 } |
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1001 |
| 0 | 1002 // setup result |
| 1003 result.set_static(resolved_klass, sel_method, CHECK); | |
| 1004 } | |
| 1005 | |
| 1006 void LinkResolver::resolve_virtual_call(CallInfo& result, Handle recv, KlassHandle receiver_klass, KlassHandle resolved_klass, | |
|
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1007 Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, |
| 0 | 1008 bool check_access, bool check_null_and_abstract, TRAPS) { |
| 1009 methodHandle resolved_method; | |
| 1010 linktime_resolve_virtual_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
| 1011 runtime_resolve_virtual_method(result, resolved_method, resolved_klass, recv, receiver_klass, check_null_and_abstract, CHECK); | |
| 1012 } | |
| 1013 | |
| 1014 // throws linktime exceptions | |
| 1015 void LinkResolver::linktime_resolve_virtual_method(methodHandle &resolved_method, KlassHandle resolved_klass, | |
|
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1016 Symbol* method_name, Symbol* method_signature, |
| 0 | 1017 KlassHandle current_klass, bool check_access, TRAPS) { |
| 1018 // normal method resolution | |
|
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1019 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, true, CHECK); |
| 0 | 1020 |
| 1021 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); | |
| 1022 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); | |
| 1023 | |
|
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1024 // check if private interface method |
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1025 if (resolved_klass->is_interface() && resolved_method->is_private()) { |
|
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1026 ResourceMark rm(THREAD); |
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1027 char buf[200]; |
|
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1028 jio_snprintf(buf, sizeof(buf), "private interface method requires invokespecial, not invokevirtual: method %s, caller-class:%s", |
|
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1029 Method::name_and_sig_as_C_string(resolved_klass(), |
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1030 resolved_method->name(), |
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1031 resolved_method->signature()), |
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1032 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name())); |
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1033 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
|
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1034 } |
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1035 |
| 0 | 1036 // check if not static |
| 1037 if (resolved_method->is_static()) { | |
|
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1038 ResourceMark rm(THREAD); |
| 0 | 1039 char buf[200]; |
| 6983 | 1040 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", Method::name_and_sig_as_C_string(resolved_klass(), |
| 0 | 1041 resolved_method->name(), |
| 1042 resolved_method->signature())); | |
| 1043 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
| 1044 } | |
|
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1045 |
|
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1046 if (PrintVtables && Verbose) { |
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1047 ResourceMark rm(THREAD); |
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1048 tty->print("invokevirtual resolved method: caller-class:%s, compile-time-class:%s, method:%s, method_holder:%s, access_flags: ", |
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1049 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name()), |
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1050 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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1051 Method::name_and_sig_as_C_string(resolved_klass(), |
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1052 resolved_method->name(), |
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1053 resolved_method->signature()), |
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1054 resolved_method->method_holder()->internal_name() |
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1055 ); |
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1056 resolved_method->access_flags().print_on(tty); |
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1057 if (resolved_method->is_default_method()) { |
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1058 tty->print("default"); |
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1059 } |
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1060 if (resolved_method->is_overpass()) { |
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1061 tty->print("overpass"); |
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1062 } |
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1063 tty->cr(); |
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1064 } |
| 0 | 1065 } |
| 1066 | |
| 1067 // throws runtime exceptions | |
| 1068 void LinkResolver::runtime_resolve_virtual_method(CallInfo& result, | |
| 1069 methodHandle resolved_method, | |
| 1070 KlassHandle resolved_klass, | |
| 1071 Handle recv, | |
| 1072 KlassHandle recv_klass, | |
| 1073 bool check_null_and_abstract, | |
| 1074 TRAPS) { | |
| 1075 | |
| 1076 // setup default return values | |
|
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1077 int vtable_index = Method::invalid_vtable_index; |
| 0 | 1078 methodHandle selected_method; |
| 1079 | |
| 1080 assert(recv.is_null() || recv->is_oop(), "receiver is not an oop"); | |
| 1081 | |
| 1082 // runtime method resolution | |
| 1083 if (check_null_and_abstract && recv.is_null()) { // check if receiver exists | |
| 1084 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 1085 } | |
| 1086 | |
|
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1087 // Virtual methods cannot be resolved before its klass has been linked, for otherwise the Method*'s |
| 0 | 1088 // has not been rewritten, and the vtable initialized. Make sure to do this after the nullcheck, since |
| 1089 // a missing receiver might result in a bogus lookup. | |
|
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1090 assert(resolved_method->method_holder()->is_linked(), "must be linked"); |
| 0 | 1091 |
| 1092 // do lookup based on receiver klass using the vtable index | |
|
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1093 if (resolved_method->method_holder()->is_interface()) { // miranda method |
|
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1094 vtable_index = vtable_index_of_interface_method(resolved_klass, |
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1095 resolved_method, CHECK); |
| 0 | 1096 assert(vtable_index >= 0 , "we should have valid vtable index at this point"); |
| 1097 | |
|
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1098 InstanceKlass* inst = InstanceKlass::cast(recv_klass()); |
| 0 | 1099 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); |
| 1100 } else { | |
| 1101 // at this point we are sure that resolved_method is virtual and not | |
| 1102 // a miranda method; therefore, it must have a valid vtable index. | |
|
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1103 assert(!resolved_method->has_itable_index(), ""); |
| 0 | 1104 vtable_index = resolved_method->vtable_index(); |
| 1105 // We could get a negative vtable_index for final methods, | |
| 1106 // because as an optimization they are they are never put in the vtable, | |
| 1107 // unless they override an existing method. | |
| 1108 // If we do get a negative, it means the resolved method is the the selected | |
| 1109 // method, and it can never be changed by an override. | |
|
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|
1110 if (vtable_index == Method::nonvirtual_vtable_index) { |
| 0 | 1111 assert(resolved_method->can_be_statically_bound(), "cannot override this method"); |
| 1112 selected_method = resolved_method; | |
| 1113 } else { | |
| 1114 // recv_klass might be an arrayKlassOop but all vtables start at | |
| 1115 // the same place. The cast is to avoid virtual call and assertion. | |
|
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1116 InstanceKlass* inst = (InstanceKlass*)recv_klass(); |
| 0 | 1117 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); |
| 1118 } | |
| 1119 } | |
| 1120 | |
| 1121 // check if method exists | |
| 1122 if (selected_method.is_null()) { | |
| 1123 ResourceMark rm(THREAD); | |
| 1124 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
| 6983 | 1125 Method::name_and_sig_as_C_string(resolved_klass(), |
| 0 | 1126 resolved_method->name(), |
| 1127 resolved_method->signature())); | |
| 1128 } | |
| 1129 | |
| 1130 // check if abstract | |
| 1131 if (check_null_and_abstract && selected_method->is_abstract()) { | |
| 1132 ResourceMark rm(THREAD); | |
| 1133 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
| 6983 | 1134 Method::name_and_sig_as_C_string(resolved_klass(), |
| 0 | 1135 selected_method->name(), |
| 1136 selected_method->signature())); | |
| 1137 } | |
| 1138 | |
|
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|
1139 if (PrintVtables && Verbose) { |
|
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|
1140 ResourceMark rm(THREAD); |
|
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|
1141 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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|
1142 (recv_klass.is_null() ? "<NULL>" : recv_klass->internal_name()), |
|
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1143 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
|
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|
1144 Method::name_and_sig_as_C_string(resolved_klass(), |
|
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|
1145 resolved_method->name(), |
|
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|
1146 resolved_method->signature()), |
|
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|
1147 selected_method->method_holder()->internal_name(), |
|
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|
1148 vtable_index |
|
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|
1149 ); |
|
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|
1150 selected_method->access_flags().print_on(tty); |
|
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|
1151 if (selected_method->is_default_method()) { |
|
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|
1152 tty->print("default"); |
|
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|
1153 } |
|
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1154 if (selected_method->is_overpass()) { |
|
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|
1155 tty->print("overpass"); |
|
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|
1156 } |
|
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|
1157 tty->cr(); |
|
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|
1158 } |
| 0 | 1159 // setup result |
| 1160 result.set_virtual(resolved_klass, recv_klass, resolved_method, selected_method, vtable_index, CHECK); | |
| 1161 } | |
| 1162 | |
| 1163 void LinkResolver::resolve_interface_call(CallInfo& result, Handle recv, KlassHandle recv_klass, KlassHandle resolved_klass, | |
|
2177
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|
1164 Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, |
| 0 | 1165 bool check_access, bool check_null_and_abstract, TRAPS) { |
| 1166 methodHandle resolved_method; | |
| 1167 linktime_resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
| 1168 runtime_resolve_interface_method(result, resolved_method, resolved_klass, recv, recv_klass, check_null_and_abstract, CHECK); | |
| 1169 } | |
| 1170 | |
| 1171 // throws linktime exceptions | |
|
2177
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diff
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|
1172 void LinkResolver::linktime_resolve_interface_method(methodHandle& resolved_method, KlassHandle resolved_klass, Symbol* method_name, |
|
3582bf76420e
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|
1173 Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS) { |
| 0 | 1174 // normal interface method resolution |
| 1175 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
| 1176 | |
| 1177 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); | |
| 1178 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); | |
| 1179 } | |
| 1180 | |
| 1181 // throws runtime exceptions | |
| 1182 void LinkResolver::runtime_resolve_interface_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, | |
| 1183 Handle recv, KlassHandle recv_klass, bool check_null_and_abstract, TRAPS) { | |
| 1184 // check if receiver exists | |
| 1185 if (check_null_and_abstract && recv.is_null()) { | |
| 1186 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 1187 } | |
| 1188 | |
|
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|
1189 // check if private interface method |
|
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|
1190 if (resolved_klass->is_interface() && resolved_method->is_private()) { |
|
36b97be47bde
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|
1191 ResourceMark rm(THREAD); |
|
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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diff
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|
1192 char buf[200]; |
|
36b97be47bde
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|
1193 jio_snprintf(buf, sizeof(buf), "private interface method requires invokespecial, not invokeinterface: method %s", |
|
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diff
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|
1194 Method::name_and_sig_as_C_string(resolved_klass(), |
|
36b97be47bde
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|
1195 resolved_method->name(), |
|
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1196 resolved_method->signature())); |
|
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|
1197 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
|
36b97be47bde
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|
1198 } |
|
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|
1199 |
| 0 | 1200 // check if receiver klass implements the resolved interface |
| 1201 if (!recv_klass->is_subtype_of(resolved_klass())) { | |
|
3324
acf5e660c71a
6728025: LinkResolver is missing some ResourceMarks
jcoomes
parents:
2460
diff
changeset
|
1202 ResourceMark rm(THREAD); |
| 0 | 1203 char buf[200]; |
| 1204 jio_snprintf(buf, sizeof(buf), "Class %s does not implement the requested interface %s", | |
| 6983 | 1205 recv_klass()->external_name(), |
| 1206 resolved_klass()->external_name()); | |
| 0 | 1207 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
| 1208 } | |
| 1209 // do lookup based on receiver klass | |
| 1210 methodHandle sel_method; | |
| 1211 lookup_instance_method_in_klasses(sel_method, recv_klass, | |
|
2177
3582bf76420e
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coleenp
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diff
changeset
|
1212 resolved_method->name(), |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
1213 resolved_method->signature(), CHECK); |
|
12264
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
10128
diff
changeset
|
1214 if (sel_method.is_null() && !check_null_and_abstract) { |
|
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
10128
diff
changeset
|
1215 // In theory this is a harmless placeholder value, but |
|
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
10128
diff
changeset
|
1216 // in practice leaving in null affects the nsk default method tests. |
|
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
10128
diff
changeset
|
1217 // This needs further study. |
|
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
10128
diff
changeset
|
1218 sel_method = resolved_method; |
|
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
10128
diff
changeset
|
1219 } |
| 0 | 1220 // check if method exists |
| 1221 if (sel_method.is_null()) { | |
| 1222 ResourceMark rm(THREAD); | |
| 1223 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
| 6983 | 1224 Method::name_and_sig_as_C_string(recv_klass(), |
| 0 | 1225 resolved_method->name(), |
| 1226 resolved_method->signature())); | |
| 1227 } | |
|
10128
41ed397cc0cd
8006267: InterfaceMethod_ref should allow invokestatic and invokespecial
bharadwaj
parents:
9082
diff
changeset
|
1228 // check access |
|
12318
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
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diff
changeset
|
1229 // Throw Illegal Access Error if sel_method is not public. |
|
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
parents:
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diff
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|
1230 if (!sel_method->is_public()) { |
|
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
parents:
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diff
changeset
|
1231 ResourceMark rm(THREAD); |
|
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
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diff
changeset
|
1232 THROW_MSG(vmSymbols::java_lang_IllegalAccessError(), |
|
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
parents:
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diff
changeset
|
1233 Method::name_and_sig_as_C_string(recv_klass(), |
|
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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diff
changeset
|
1234 sel_method->name(), |
|
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
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diff
changeset
|
1235 sel_method->signature())); |
|
10128
41ed397cc0cd
8006267: InterfaceMethod_ref should allow invokestatic and invokespecial
bharadwaj
parents:
9082
diff
changeset
|
1236 } |
| 0 | 1237 // check if abstract |
| 1238 if (check_null_and_abstract && sel_method->is_abstract()) { | |
| 1239 ResourceMark rm(THREAD); | |
| 1240 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
| 6983 | 1241 Method::name_and_sig_as_C_string(recv_klass(), |
| 0 | 1242 sel_method->name(), |
| 1243 sel_method->signature())); | |
| 1244 } | |
| 1245 // setup result | |
|
12264
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
10128
diff
changeset
|
1246 if (!resolved_method->has_itable_index()) { |
|
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
10128
diff
changeset
|
1247 int vtable_index = resolved_method->vtable_index(); |
|
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
10128
diff
changeset
|
1248 assert(vtable_index == sel_method->vtable_index(), "sanity check"); |
|
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
10128
diff
changeset
|
1249 result.set_virtual(resolved_klass, recv_klass, resolved_method, sel_method, vtable_index, CHECK); |
|
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
10128
diff
changeset
|
1250 return; |
|
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
10128
diff
changeset
|
1251 } |
|
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
10128
diff
changeset
|
1252 int itable_index = resolved_method()->itable_index(); |
|
12318
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
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diff
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|
1253 |
|
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
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diff
changeset
|
1254 if (TraceItables && Verbose) { |
|
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
parents:
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diff
changeset
|
1255 ResourceMark rm(THREAD); |
|
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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diff
changeset
|
1256 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.
acorn
parents:
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diff
changeset
|
1257 (recv_klass.is_null() ? "<NULL>" : recv_klass->internal_name()), |
|
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
parents:
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diff
changeset
|
1258 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
|
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
parents:
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diff
changeset
|
1259 Method::name_and_sig_as_C_string(resolved_klass(), |
|
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
parents:
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diff
changeset
|
1260 resolved_method->name(), |
|
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
parents:
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diff
changeset
|
1261 resolved_method->signature()), |
|
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
parents:
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diff
changeset
|
1262 sel_method->method_holder()->internal_name() |
|
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
parents:
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diff
changeset
|
1263 ); |
|
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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parents:
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diff
changeset
|
1264 sel_method->access_flags().print_on(tty); |
|
12823
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8009130: Lambda: Fix access controls, loader constraints.
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parents:
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diff
changeset
|
1265 if (sel_method->is_default_method()) { |
|
12318
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
parents:
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diff
changeset
|
1266 tty->print("default"); |
|
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
parents:
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diff
changeset
|
1267 } |
|
12823
ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
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diff
changeset
|
1268 if (sel_method->is_overpass()) { |
|
12318
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
parents:
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diff
changeset
|
1269 tty->print("overpass"); |
|
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
parents:
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diff
changeset
|
1270 } |
|
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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parents:
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diff
changeset
|
1271 tty->cr(); |
|
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
parents:
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diff
changeset
|
1272 } |
|
12264
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
10128
diff
changeset
|
1273 result.set_interface(resolved_klass, recv_klass, resolved_method, sel_method, itable_index, CHECK); |
| 0 | 1274 } |
| 1275 | |
| 1276 | |
| 1277 methodHandle LinkResolver::linktime_resolve_interface_method_or_null( | |
| 1278 KlassHandle resolved_klass, | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
1279 Symbol* method_name, |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
1280 Symbol* method_signature, |
| 0 | 1281 KlassHandle current_klass, |
| 1282 bool check_access) { | |
| 1283 EXCEPTION_MARK; | |
| 1284 methodHandle method_result; | |
| 1285 linktime_resolve_interface_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); | |
| 1286 if (HAS_PENDING_EXCEPTION) { | |
| 1287 CLEAR_PENDING_EXCEPTION; | |
| 1288 return methodHandle(); | |
| 1289 } else { | |
| 1290 return method_result; | |
| 1291 } | |
| 1292 } | |
| 1293 | |
| 1294 methodHandle LinkResolver::linktime_resolve_virtual_method_or_null( | |
| 1295 KlassHandle resolved_klass, | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
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_virtual_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::resolve_virtual_call_or_null( | |
| 1312 KlassHandle receiver_klass, | |
| 1313 KlassHandle resolved_klass, | |
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1314 Symbol* name, |
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1315 Symbol* signature, |
| 0 | 1316 KlassHandle current_klass) { |
| 1317 EXCEPTION_MARK; | |
| 1318 CallInfo info; | |
| 1319 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
| 1320 if (HAS_PENDING_EXCEPTION) { | |
| 1321 CLEAR_PENDING_EXCEPTION; | |
| 1322 return methodHandle(); | |
| 1323 } | |
| 1324 return info.selected_method(); | |
| 1325 } | |
| 1326 | |
| 1327 methodHandle LinkResolver::resolve_interface_call_or_null( | |
| 1328 KlassHandle receiver_klass, | |
| 1329 KlassHandle resolved_klass, | |
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1330 Symbol* name, |
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1331 Symbol* signature, |
| 0 | 1332 KlassHandle current_klass) { |
| 1333 EXCEPTION_MARK; | |
| 1334 CallInfo info; | |
| 1335 resolve_interface_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
| 1336 if (HAS_PENDING_EXCEPTION) { | |
| 1337 CLEAR_PENDING_EXCEPTION; | |
| 1338 return methodHandle(); | |
| 1339 } | |
| 1340 return info.selected_method(); | |
| 1341 } | |
| 1342 | |
| 1343 int LinkResolver::resolve_virtual_vtable_index( | |
| 1344 KlassHandle receiver_klass, | |
| 1345 KlassHandle resolved_klass, | |
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1346 Symbol* name, |
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1347 Symbol* signature, |
| 0 | 1348 KlassHandle current_klass) { |
| 1349 EXCEPTION_MARK; | |
| 1350 CallInfo info; | |
| 1351 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
| 1352 if (HAS_PENDING_EXCEPTION) { | |
| 1353 CLEAR_PENDING_EXCEPTION; | |
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1354 return Method::invalid_vtable_index; |
| 0 | 1355 } |
| 1356 return info.vtable_index(); | |
| 1357 } | |
| 1358 | |
| 1359 methodHandle LinkResolver::resolve_static_call_or_null( | |
| 1360 KlassHandle resolved_klass, | |
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1361 Symbol* name, |
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1362 Symbol* signature, |
| 0 | 1363 KlassHandle current_klass) { |
| 1364 EXCEPTION_MARK; | |
| 1365 CallInfo info; | |
| 1366 resolve_static_call(info, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
| 1367 if (HAS_PENDING_EXCEPTION) { | |
| 1368 CLEAR_PENDING_EXCEPTION; | |
| 1369 return methodHandle(); | |
| 1370 } | |
| 1371 return info.selected_method(); | |
| 1372 } | |
| 1373 | |
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1374 methodHandle LinkResolver::resolve_special_call_or_null(KlassHandle resolved_klass, Symbol* name, Symbol* signature, |
| 0 | 1375 KlassHandle current_klass) { |
| 1376 EXCEPTION_MARK; | |
| 1377 CallInfo info; | |
| 1378 resolve_special_call(info, resolved_klass, name, signature, current_klass, true, THREAD); | |
| 1379 if (HAS_PENDING_EXCEPTION) { | |
| 1380 CLEAR_PENDING_EXCEPTION; | |
| 1381 return methodHandle(); | |
| 1382 } | |
| 1383 return info.selected_method(); | |
| 1384 } | |
| 1385 | |
| 1386 | |
| 1387 | |
| 1388 //------------------------------------------------------------------------------------------------------------------------ | |
| 1389 // ConstantPool entries | |
| 1390 | |
| 1391 void LinkResolver::resolve_invoke(CallInfo& result, Handle recv, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS) { | |
| 1392 switch (byte) { | |
| 1393 case Bytecodes::_invokestatic : resolve_invokestatic (result, pool, index, CHECK); break; | |
| 1394 case Bytecodes::_invokespecial : resolve_invokespecial (result, pool, index, CHECK); break; | |
| 1395 case Bytecodes::_invokevirtual : resolve_invokevirtual (result, recv, pool, index, CHECK); break; | |
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1396 case Bytecodes::_invokehandle : resolve_invokehandle (result, pool, index, CHECK); break; |
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1397 case Bytecodes::_invokedynamic : resolve_invokedynamic (result, pool, index, CHECK); break; |
| 0 | 1398 case Bytecodes::_invokeinterface: resolve_invokeinterface(result, recv, pool, index, CHECK); break; |
| 1399 } | |
| 1400 return; | |
| 1401 } | |
| 1402 | |
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1403 void LinkResolver::resolve_pool(KlassHandle& resolved_klass, Symbol*& method_name, Symbol*& method_signature, |
| 0 | 1404 KlassHandle& current_klass, constantPoolHandle pool, int index, TRAPS) { |
| 1405 // resolve klass | |
| 1406 resolve_klass(resolved_klass, pool, index, CHECK); | |
| 1407 | |
| 1408 // Get name, signature, and static klass | |
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1409 method_name = pool->name_ref_at(index); |
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1410 method_signature = pool->signature_ref_at(index); |
| 0 | 1411 current_klass = KlassHandle(THREAD, pool->pool_holder()); |
| 1412 } | |
| 1413 | |
| 1414 | |
| 1415 void LinkResolver::resolve_invokestatic(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { | |
| 1416 KlassHandle resolved_klass; | |
|
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1417 Symbol* method_name = NULL; |
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1418 Symbol* method_signature = NULL; |
| 0 | 1419 KlassHandle current_klass; |
| 1420 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
| 1421 resolve_static_call(result, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); | |
| 1422 } | |
| 1423 | |
| 1424 | |
| 1425 void LinkResolver::resolve_invokespecial(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { | |
| 1426 KlassHandle resolved_klass; | |
|
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1427 Symbol* method_name = NULL; |
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1428 Symbol* method_signature = NULL; |
| 0 | 1429 KlassHandle current_klass; |
| 1430 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
| 1431 resolve_special_call(result, resolved_klass, method_name, method_signature, current_klass, true, CHECK); | |
| 1432 } | |
| 1433 | |
| 1434 | |
| 1435 void LinkResolver::resolve_invokevirtual(CallInfo& result, Handle recv, | |
| 1436 constantPoolHandle pool, int index, | |
| 1437 TRAPS) { | |
| 1438 | |
| 1439 KlassHandle resolved_klass; | |
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1440 Symbol* method_name = NULL; |
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1441 Symbol* method_signature = NULL; |
| 0 | 1442 KlassHandle current_klass; |
| 1443 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
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1444 KlassHandle recvrKlass (THREAD, recv.is_null() ? (Klass*)NULL : recv->klass()); |
| 0 | 1445 resolve_virtual_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
| 1446 } | |
| 1447 | |
| 1448 | |
| 1449 void LinkResolver::resolve_invokeinterface(CallInfo& result, Handle recv, constantPoolHandle pool, int index, TRAPS) { | |
| 1450 KlassHandle resolved_klass; | |
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1451 Symbol* method_name = NULL; |
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1452 Symbol* method_signature = NULL; |
| 0 | 1453 KlassHandle current_klass; |
| 1454 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
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1455 KlassHandle recvrKlass (THREAD, recv.is_null() ? (Klass*)NULL : recv->klass()); |
| 0 | 1456 resolve_interface_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
| 1457 } | |
| 1458 | |
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1459 |
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1460 void LinkResolver::resolve_invokehandle(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { |
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1461 assert(EnableInvokeDynamic, ""); |
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1462 // This guy is reached from InterpreterRuntime::resolve_invokehandle. |
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1463 KlassHandle resolved_klass; |
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1464 Symbol* method_name = NULL; |
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1465 Symbol* method_signature = NULL; |
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1466 KlassHandle current_klass; |
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1467 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); |
| 9082 | 1468 if (TraceMethodHandles) { |
| 1469 ResourceMark rm(THREAD); | |
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1470 tty->print_cr("resolve_invokehandle %s %s", method_name->as_C_string(), method_signature->as_C_string()); |
| 9082 | 1471 } |
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1472 resolve_handle_call(result, resolved_klass, method_name, method_signature, current_klass, CHECK); |
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1473 } |
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1474 |
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1475 void LinkResolver::resolve_handle_call(CallInfo& result, KlassHandle resolved_klass, |
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1476 Symbol* method_name, Symbol* method_signature, |
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1477 KlassHandle current_klass, |
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1478 TRAPS) { |
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1479 // JSR 292: this must be an implicitly generated method MethodHandle.invokeExact(*...) or similar |
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1480 assert(resolved_klass() == SystemDictionary::MethodHandle_klass(), ""); |
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1481 assert(MethodHandles::is_signature_polymorphic_name(method_name), ""); |
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1482 methodHandle resolved_method; |
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1483 Handle resolved_appendix; |
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1484 Handle resolved_method_type; |
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1485 lookup_polymorphic_method(resolved_method, resolved_klass, |
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1486 method_name, method_signature, |
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1487 current_klass, &resolved_appendix, &resolved_method_type, CHECK); |
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1488 result.set_handle(resolved_method, resolved_appendix, resolved_method_type, CHECK); |
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1489 } |
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1490 |
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1491 |
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1492 void LinkResolver::resolve_invokedynamic(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { |
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1493 assert(EnableInvokeDynamic, ""); |
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1494 |
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1495 //resolve_pool(<resolved_klass>, method_name, method_signature, current_klass, pool, index, CHECK); |
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1496 Symbol* method_name = pool->name_ref_at(index); |
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1497 Symbol* method_signature = pool->signature_ref_at(index); |
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1498 KlassHandle current_klass = KlassHandle(THREAD, pool->pool_holder()); |
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1499 |
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1500 // Resolve the bootstrap specifier (BSM + optional arguments). |
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1501 Handle bootstrap_specifier; |
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1502 // Check if CallSite has been bound already: |
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1503 ConstantPoolCacheEntry* cpce = pool->invokedynamic_cp_cache_entry_at(index); |
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1504 if (cpce->is_f1_null()) { |
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1505 int pool_index = cpce->constant_pool_index(); |
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1506 oop bsm_info = pool->resolve_bootstrap_specifier_at(pool_index, CHECK); |
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1507 assert(bsm_info != NULL, ""); |
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1508 // FIXME: Cache this once per BootstrapMethods entry, not once per CONSTANT_InvokeDynamic. |
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1509 bootstrap_specifier = Handle(THREAD, bsm_info); |
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1510 } |
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1511 if (!cpce->is_f1_null()) { |
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1512 methodHandle method( THREAD, cpce->f1_as_method()); |
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1513 Handle appendix( THREAD, cpce->appendix_if_resolved(pool)); |
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1514 Handle method_type(THREAD, cpce->method_type_if_resolved(pool)); |
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1515 result.set_handle(method, appendix, method_type, CHECK); |
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1516 return; |
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1517 } |
|
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1518 |
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1519 if (TraceMethodHandles) { |
|
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1520 ResourceMark rm(THREAD); |
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1521 tty->print_cr("resolve_invokedynamic #%d %s %s", |
|
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1522 ConstantPool::decode_invokedynamic_index(index), |
|
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1523 method_name->as_C_string(), method_signature->as_C_string()); |
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1524 tty->print(" BSM info: "); bootstrap_specifier->print(); |
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1525 } |
|
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1526 |
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1527 resolve_dynamic_call(result, bootstrap_specifier, method_name, method_signature, current_klass, CHECK); |
|
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1528 } |
|
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1529 |
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1530 void LinkResolver::resolve_dynamic_call(CallInfo& result, |
|
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1531 Handle bootstrap_specifier, |
|
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1532 Symbol* method_name, Symbol* method_signature, |
|
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1533 KlassHandle current_klass, |
|
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1534 TRAPS) { |
|
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1535 // JSR 292: this must resolve to an implicitly generated method MH.linkToCallSite(*...) |
|
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1536 // The appendix argument is likely to be a freshly-created CallSite. |
|
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1537 Handle resolved_appendix; |
|
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|
1538 Handle resolved_method_type; |
|
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1539 methodHandle resolved_method = |
|
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1540 SystemDictionary::find_dynamic_call_site_invoker(current_klass, |
|
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|
1541 bootstrap_specifier, |
|
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|
1542 method_name, method_signature, |
|
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|
1543 &resolved_appendix, |
|
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1544 &resolved_method_type, |
|
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|
1545 THREAD); |
|
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|
1546 if (HAS_PENDING_EXCEPTION) { |
|
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|
1547 if (TraceMethodHandles) { |
|
12316
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|
1548 tty->print_cr("invokedynamic throws BSME for "INTPTR_FORMAT, (void *)PENDING_EXCEPTION); |
|
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|
1549 PENDING_EXCEPTION->print(); |
|
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1550 } |
|
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|
1551 if (PENDING_EXCEPTION->is_a(SystemDictionary::BootstrapMethodError_klass())) { |
|
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|
1552 // throw these guys, since they are already wrapped |
|
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|
1553 return; |
|
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|
1554 } |
|
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|
1555 if (!PENDING_EXCEPTION->is_a(SystemDictionary::LinkageError_klass())) { |
|
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|
1556 // intercept only LinkageErrors which might have failed to wrap |
|
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|
1557 return; |
|
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|
1558 } |
|
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|
1559 // See the "Linking Exceptions" section for the invokedynamic instruction in the JVMS. |
|
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|
1560 Handle nested_exception(THREAD, PENDING_EXCEPTION); |
|
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|
1561 CLEAR_PENDING_EXCEPTION; |
|
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|
1562 THROW_CAUSE(vmSymbols::java_lang_BootstrapMethodError(), nested_exception) |
|
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|
1563 } |
|
6822
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|
1564 result.set_handle(resolved_method, resolved_appendix, resolved_method_type, CHECK); |
|
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|
1565 } |
|
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|
1566 |
| 0 | 1567 //------------------------------------------------------------------------------------------------------------------------ |
| 1568 #ifndef PRODUCT | |
| 1569 | |
|
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|
1570 void CallInfo::print() { |
| 0 | 1571 ResourceMark rm; |
|
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|
1572 const char* kindstr = "unknown"; |
|
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|
1573 switch (_call_kind) { |
|
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|
1574 case direct_call: kindstr = "direct"; break; |
|
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|
1575 case vtable_call: kindstr = "vtable"; break; |
|
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|
1576 case itable_call: kindstr = "itable"; break; |
|
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|
1577 } |
|
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|
1578 tty->print_cr("Call %s@%d %s", kindstr, _call_index, |
|
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|
1579 _resolved_method.is_null() ? "(none)" : _resolved_method->name_and_sig_as_C_string()); |
| 0 | 1580 } |
| 1581 | |
| 1582 #endif |