Mercurial > hg > truffle
annotate src/share/vm/interpreter/linkResolver.cpp @ 2460:ed69575596ac
6981791: remove experimental code for JSR 292
Reviewed-by: twisti
| author | jrose |
|---|---|
| date | Thu, 07 Apr 2011 17:02:30 -0700 |
| parents | 38fea01eb669 |
| children | acf5e660c71a |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2011, 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" |
| 26 #include "classfile/systemDictionary.hpp" | |
| 27 #include "classfile/vmSymbols.hpp" | |
| 28 #include "compiler/compileBroker.hpp" | |
| 29 #include "gc_interface/collectedHeap.inline.hpp" | |
| 30 #include "interpreter/bytecode.hpp" | |
| 31 #include "interpreter/interpreterRuntime.hpp" | |
| 32 #include "interpreter/linkResolver.hpp" | |
| 33 #include "memory/resourceArea.hpp" | |
| 34 #include "memory/universe.inline.hpp" | |
| 35 #include "oops/instanceKlass.hpp" | |
| 36 #include "oops/objArrayOop.hpp" | |
| 37 #include "prims/methodHandles.hpp" | |
| 38 #include "prims/nativeLookup.hpp" | |
| 39 #include "runtime/compilationPolicy.hpp" | |
| 40 #include "runtime/fieldDescriptor.hpp" | |
| 41 #include "runtime/frame.inline.hpp" | |
| 42 #include "runtime/handles.inline.hpp" | |
| 43 #include "runtime/reflection.hpp" | |
| 44 #include "runtime/signature.hpp" | |
| 45 #include "runtime/vmThread.hpp" | |
| 46 #ifdef TARGET_OS_FAMILY_linux | |
| 47 # include "thread_linux.inline.hpp" | |
| 48 #endif | |
| 49 #ifdef TARGET_OS_FAMILY_solaris | |
| 50 # include "thread_solaris.inline.hpp" | |
| 51 #endif | |
| 52 #ifdef TARGET_OS_FAMILY_windows | |
| 53 # include "thread_windows.inline.hpp" | |
| 54 #endif | |
| 0 | 55 |
| 56 //------------------------------------------------------------------------------------------------------------------------ | |
| 57 // Implementation of FieldAccessInfo | |
| 58 | |
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59 void FieldAccessInfo::set(KlassHandle klass, Symbol* name, int field_index, int field_offset, |
| 0 | 60 BasicType field_type, AccessFlags access_flags) { |
| 61 _klass = klass; | |
| 62 _name = name; | |
| 63 _field_index = field_index; | |
| 64 _field_offset = field_offset; | |
| 65 _field_type = field_type; | |
| 66 _access_flags = access_flags; | |
| 67 } | |
| 68 | |
| 69 | |
| 70 //------------------------------------------------------------------------------------------------------------------------ | |
| 71 // Implementation of CallInfo | |
| 72 | |
| 73 | |
| 74 void CallInfo::set_static(KlassHandle resolved_klass, methodHandle resolved_method, TRAPS) { | |
| 75 int vtable_index = methodOopDesc::nonvirtual_vtable_index; | |
| 76 set_common(resolved_klass, resolved_klass, resolved_method, resolved_method, vtable_index, CHECK); | |
| 77 } | |
| 78 | |
| 79 | |
| 80 void CallInfo::set_interface(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, TRAPS) { | |
| 81 // This is only called for interface methods. If the resolved_method | |
| 82 // comes from java/lang/Object, it can be the subject of a virtual call, so | |
| 83 // we should pick the vtable index from the resolved method. | |
| 84 // Other than that case, there is no valid vtable index to specify. | |
| 85 int vtable_index = methodOopDesc::invalid_vtable_index; | |
| 1142 | 86 if (resolved_method->method_holder() == SystemDictionary::Object_klass()) { |
| 0 | 87 assert(resolved_method->vtable_index() == selected_method->vtable_index(), "sanity check"); |
| 88 vtable_index = resolved_method->vtable_index(); | |
| 89 } | |
| 90 set_common(resolved_klass, selected_klass, resolved_method, selected_method, vtable_index, CHECK); | |
| 91 } | |
| 92 | |
| 93 void CallInfo::set_virtual(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index, TRAPS) { | |
| 94 assert(vtable_index >= 0 || vtable_index == methodOopDesc::nonvirtual_vtable_index, "valid index"); | |
| 95 set_common(resolved_klass, selected_klass, resolved_method, selected_method, vtable_index, CHECK); | |
| 96 } | |
| 97 | |
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98 void CallInfo::set_dynamic(methodHandle resolved_method, TRAPS) { |
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99 assert(resolved_method->is_method_handle_invoke(), ""); |
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100 KlassHandle resolved_klass = SystemDictionaryHandles::MethodHandle_klass(); |
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101 assert(resolved_klass == resolved_method->method_holder(), ""); |
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102 int vtable_index = methodOopDesc::nonvirtual_vtable_index; |
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103 assert(resolved_method->vtable_index() == vtable_index, ""); |
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104 set_common(resolved_klass, KlassHandle(), resolved_method, resolved_method, vtable_index, CHECK); |
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105 } |
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106 |
| 0 | 107 void CallInfo::set_common(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index, TRAPS) { |
| 108 assert(resolved_method->signature() == selected_method->signature(), "signatures must correspond"); | |
| 109 _resolved_klass = resolved_klass; | |
| 110 _selected_klass = selected_klass; | |
| 111 _resolved_method = resolved_method; | |
| 112 _selected_method = selected_method; | |
| 113 _vtable_index = vtable_index; | |
| 1783 | 114 if (CompilationPolicy::must_be_compiled(selected_method)) { |
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115 // This path is unusual, mostly used by the '-Xcomp' stress test mode. |
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116 |
| 1783 | 117 // Note: with several active threads, the must_be_compiled may be true |
| 118 // while can_be_compiled is false; remove assert | |
| 119 // assert(CompilationPolicy::can_be_compiled(selected_method), "cannot compile"); | |
| 0 | 120 if (THREAD->is_Compiler_thread()) { |
| 121 // don't force compilation, resolve was on behalf of compiler | |
| 122 return; | |
| 123 } | |
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124 if (instanceKlass::cast(selected_method->method_holder())->is_not_initialized()) { |
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125 // 'is_not_initialized' means not only '!is_initialized', but also that |
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126 // initialization has not been started yet ('!being_initialized') |
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127 // Do not force compilation of methods in uninitialized classes. |
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128 // Note that doing this would throw an assert later, |
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129 // in CompileBroker::compile_method. |
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130 // We sometimes use the link resolver to do reflective lookups |
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131 // even before classes are initialized. |
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132 return; |
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133 } |
| 0 | 134 CompileBroker::compile_method(selected_method, InvocationEntryBci, |
| 1783 | 135 CompLevel_initial_compile, |
| 136 methodHandle(), 0, "must_be_compiled", CHECK); | |
| 0 | 137 } |
| 138 } | |
| 139 | |
| 140 | |
| 141 //------------------------------------------------------------------------------------------------------------------------ | |
| 142 // Klass resolution | |
| 143 | |
| 144 void LinkResolver::check_klass_accessability(KlassHandle ref_klass, KlassHandle sel_klass, TRAPS) { | |
| 145 if (!Reflection::verify_class_access(ref_klass->as_klassOop(), | |
| 146 sel_klass->as_klassOop(), | |
| 147 true)) { | |
| 148 ResourceMark rm(THREAD); | |
| 149 Exceptions::fthrow( | |
| 150 THREAD_AND_LOCATION, | |
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151 vmSymbols::java_lang_IllegalAccessError(), |
| 0 | 152 "tried to access class %s from class %s", |
| 153 sel_klass->external_name(), | |
| 154 ref_klass->external_name() | |
| 155 ); | |
| 156 return; | |
| 157 } | |
| 158 } | |
| 159 | |
| 160 void LinkResolver::resolve_klass(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) { | |
| 161 klassOop result_oop = pool->klass_ref_at(index, CHECK); | |
| 162 result = KlassHandle(THREAD, result_oop); | |
| 163 } | |
| 164 | |
| 165 void LinkResolver::resolve_klass_no_update(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) { | |
| 166 klassOop result_oop = | |
| 167 constantPoolOopDesc::klass_ref_at_if_loaded_check(pool, index, CHECK); | |
| 168 result = KlassHandle(THREAD, result_oop); | |
| 169 } | |
| 170 | |
| 171 | |
| 172 //------------------------------------------------------------------------------------------------------------------------ | |
| 173 // Method resolution | |
| 174 // | |
| 175 // According to JVM spec. $5.4.3c & $5.4.3d | |
| 176 | |
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177 void LinkResolver::lookup_method_in_klasses(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
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178 methodOop result_oop = klass->uncached_lookup_method(name, signature); |
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179 if (EnableInvokeDynamic && result_oop != NULL) { |
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180 switch (result_oop->intrinsic_id()) { |
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181 case vmIntrinsics::_invokeExact: |
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182 case vmIntrinsics::_invokeGeneric: |
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183 case vmIntrinsics::_invokeDynamic: |
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184 // Do not link directly to these. The VM must produce a synthetic one using lookup_implicit_method. |
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185 return; |
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186 } |
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187 } |
| 0 | 188 result = methodHandle(THREAD, result_oop); |
| 189 } | |
| 190 | |
| 191 // returns first instance method | |
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192 void LinkResolver::lookup_instance_method_in_klasses(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
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193 methodOop result_oop = klass->uncached_lookup_method(name, signature); |
| 0 | 194 result = methodHandle(THREAD, result_oop); |
| 195 while (!result.is_null() && result->is_static()) { | |
| 196 klass = KlassHandle(THREAD, Klass::cast(result->method_holder())->super()); | |
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197 result = methodHandle(THREAD, klass->uncached_lookup_method(name, signature)); |
| 0 | 198 } |
| 199 } | |
| 200 | |
| 201 | |
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202 int LinkResolver::vtable_index_of_miranda_method(KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
| 0 | 203 ResourceMark rm(THREAD); |
| 204 klassVtable *vt = instanceKlass::cast(klass())->vtable(); | |
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205 return vt->index_of_miranda(name, signature); |
| 0 | 206 } |
| 207 | |
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208 void LinkResolver::lookup_method_in_interfaces(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
| 0 | 209 instanceKlass *ik = instanceKlass::cast(klass()); |
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210 result = methodHandle(THREAD, ik->lookup_method_in_all_interfaces(name, signature)); |
| 0 | 211 } |
| 212 | |
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213 void LinkResolver::lookup_implicit_method(methodHandle& result, |
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214 KlassHandle klass, Symbol* name, Symbol* signature, |
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215 KlassHandle current_klass, |
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216 TRAPS) { |
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217 if (EnableInvokeDynamic && |
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218 klass() == SystemDictionary::MethodHandle_klass() && |
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219 methodOopDesc::is_method_handle_invoke_name(name)) { |
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220 if (!THREAD->is_Compiler_thread() && !MethodHandles::enabled()) { |
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221 // Make sure the Java part of the runtime has been booted up. |
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222 klassOop natives = SystemDictionary::MethodHandleNatives_klass(); |
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223 if (natives == NULL || instanceKlass::cast(natives)->is_not_initialized()) { |
| 2460 | 224 SystemDictionary::resolve_or_fail(vmSymbols::java_lang_invoke_MethodHandleNatives(), |
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225 Handle(), |
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226 Handle(), |
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227 true, |
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228 CHECK); |
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229 } |
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230 } |
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231 methodOop result_oop = SystemDictionary::find_method_handle_invoke(name, |
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232 signature, |
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233 current_klass, |
| 710 | 234 CHECK); |
| 235 if (result_oop != NULL) { | |
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236 assert(result_oop->is_method_handle_invoke() && result_oop->signature() == signature, "consistent"); |
| 710 | 237 result = methodHandle(THREAD, result_oop); |
| 238 } | |
| 239 } | |
| 240 } | |
| 241 | |
| 0 | 242 void LinkResolver::check_method_accessability(KlassHandle ref_klass, |
| 243 KlassHandle resolved_klass, | |
| 244 KlassHandle sel_klass, | |
| 245 methodHandle sel_method, | |
| 246 TRAPS) { | |
| 247 | |
| 248 AccessFlags flags = sel_method->access_flags(); | |
| 249 | |
| 250 // Special case: arrays always override "clone". JVMS 2.15. | |
| 251 // If the resolved klass is an array class, and the declaring class | |
| 252 // is java.lang.Object and the method is "clone", set the flags | |
| 253 // to public. | |
| 254 // | |
| 255 // We'll check for the method name first, as that's most likely | |
| 256 // to be false (so we'll short-circuit out of these tests). | |
| 257 if (sel_method->name() == vmSymbols::clone_name() && | |
| 1142 | 258 sel_klass() == SystemDictionary::Object_klass() && |
| 0 | 259 resolved_klass->oop_is_array()) { |
| 260 // We need to change "protected" to "public". | |
| 261 assert(flags.is_protected(), "clone not protected?"); | |
| 262 jint new_flags = flags.as_int(); | |
| 263 new_flags = new_flags & (~JVM_ACC_PROTECTED); | |
| 264 new_flags = new_flags | JVM_ACC_PUBLIC; | |
| 265 flags.set_flags(new_flags); | |
| 266 } | |
| 267 | |
| 268 if (!Reflection::verify_field_access(ref_klass->as_klassOop(), | |
| 269 resolved_klass->as_klassOop(), | |
| 270 sel_klass->as_klassOop(), | |
| 271 flags, | |
| 272 true)) { | |
| 273 ResourceMark rm(THREAD); | |
| 274 Exceptions::fthrow( | |
| 275 THREAD_AND_LOCATION, | |
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276 vmSymbols::java_lang_IllegalAccessError(), |
| 0 | 277 "tried to access method %s.%s%s from class %s", |
| 278 sel_klass->external_name(), | |
| 279 sel_method->name()->as_C_string(), | |
| 280 sel_method->signature()->as_C_string(), | |
| 281 ref_klass->external_name() | |
| 282 ); | |
| 283 return; | |
| 284 } | |
| 285 } | |
| 286 | |
| 287 void LinkResolver::resolve_method(methodHandle& resolved_method, KlassHandle& resolved_klass, | |
| 288 constantPoolHandle pool, int index, TRAPS) { | |
| 289 | |
| 290 // resolve klass | |
| 291 resolve_klass(resolved_klass, pool, index, CHECK); | |
| 292 | |
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293 Symbol* method_name = pool->name_ref_at(index); |
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294 Symbol* method_signature = pool->signature_ref_at(index); |
| 0 | 295 KlassHandle current_klass(THREAD, pool->pool_holder()); |
| 296 | |
| 297 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); | |
| 298 } | |
| 299 | |
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300 void LinkResolver::resolve_dynamic_method(methodHandle& resolved_method, KlassHandle& resolved_klass, constantPoolHandle pool, int index, TRAPS) { |
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301 // The class is java.lang.invoke.MethodHandle |
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302 resolved_klass = SystemDictionaryHandles::MethodHandle_klass(); |
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303 |
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304 Symbol* method_name = vmSymbols::invokeExact_name(); |
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305 |
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306 Symbol* method_signature = pool->signature_ref_at(index); |
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307 KlassHandle current_klass (THREAD, pool->pool_holder()); |
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308 |
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309 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); |
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310 } |
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311 |
| 0 | 312 void LinkResolver::resolve_interface_method(methodHandle& resolved_method, KlassHandle& resolved_klass, constantPoolHandle pool, int index, TRAPS) { |
| 313 | |
| 314 // resolve klass | |
| 315 resolve_klass(resolved_klass, pool, index, CHECK); | |
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316 Symbol* method_name = pool->name_ref_at(index); |
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317 Symbol* method_signature = pool->signature_ref_at(index); |
| 0 | 318 KlassHandle current_klass(THREAD, pool->pool_holder()); |
| 319 | |
| 320 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); | |
| 321 } | |
| 322 | |
| 323 | |
| 324 void LinkResolver::resolve_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
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325 Symbol* method_name, Symbol* method_signature, |
| 0 | 326 KlassHandle current_klass, bool check_access, TRAPS) { |
| 327 | |
| 328 // 1. check if klass is not interface | |
| 329 if (resolved_klass->is_interface()) { | |
| 330 char buf[200]; | |
| 331 jio_snprintf(buf, sizeof(buf), "Found interface %s, but class was expected", Klass::cast(resolved_klass())->external_name()); | |
| 332 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
| 333 } | |
| 334 | |
| 335 // 2. lookup method in resolved klass and its super klasses | |
| 336 lookup_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
| 337 | |
| 338 if (resolved_method.is_null()) { // not found in the class hierarchy | |
| 339 // 3. lookup method in all the interfaces implemented by the resolved klass | |
| 340 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
| 341 | |
| 342 if (resolved_method.is_null()) { | |
| 710 | 343 // JSR 292: see if this is an implicitly generated method MethodHandle.invoke(*...) |
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344 lookup_implicit_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, CHECK); |
| 710 | 345 } |
| 346 | |
| 347 if (resolved_method.is_null()) { | |
| 0 | 348 // 4. method lookup failed |
| 349 ResourceMark rm(THREAD); | |
| 350 THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(), | |
| 351 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
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352 method_name, |
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353 method_signature)); |
| 0 | 354 } |
| 355 } | |
| 356 | |
| 357 // 5. check if method is concrete | |
| 358 if (resolved_method->is_abstract() && !resolved_klass->is_abstract()) { | |
| 359 ResourceMark rm(THREAD); | |
| 360 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
| 361 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
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362 method_name, |
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363 method_signature)); |
| 0 | 364 } |
| 365 | |
| 366 // 6. access checks, access checking may be turned off when calling from within the VM. | |
| 367 if (check_access) { | |
| 368 assert(current_klass.not_null() , "current_klass should not be null"); | |
| 369 | |
| 370 // check if method can be accessed by the referring class | |
| 371 check_method_accessability(current_klass, | |
| 372 resolved_klass, | |
| 373 KlassHandle(THREAD, resolved_method->method_holder()), | |
| 374 resolved_method, | |
| 375 CHECK); | |
| 376 | |
| 377 // check loader constraints | |
| 378 Handle loader (THREAD, instanceKlass::cast(current_klass())->class_loader()); | |
| 379 Handle class_loader (THREAD, instanceKlass::cast(resolved_method->method_holder())->class_loader()); | |
| 380 { | |
| 381 ResourceMark rm(THREAD); | |
| 382 char* failed_type_name = | |
| 383 SystemDictionary::check_signature_loaders(method_signature, loader, | |
| 384 class_loader, true, CHECK); | |
| 385 if (failed_type_name != NULL) { | |
| 386 const char* msg = "loader constraint violation: when resolving method" | |
| 387 " \"%s\" the class loader (instance of %s) of the current class, %s," | |
| 388 " and the class loader (instance of %s) for resolved class, %s, have" | |
| 389 " different Class objects for the type %s used in the signature"; | |
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390 char* sig = methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),method_name,method_signature); |
| 0 | 391 const char* loader1 = SystemDictionary::loader_name(loader()); |
| 392 char* current = instanceKlass::cast(current_klass())->name()->as_C_string(); | |
| 393 const char* loader2 = SystemDictionary::loader_name(class_loader()); | |
| 394 char* resolved = instanceKlass::cast(resolved_klass())->name()->as_C_string(); | |
| 395 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + | |
| 396 strlen(current) + strlen(loader2) + strlen(resolved) + | |
| 397 strlen(failed_type_name); | |
| 398 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); | |
| 399 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, | |
| 400 resolved, failed_type_name); | |
| 401 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); | |
| 402 } | |
| 403 } | |
| 404 } | |
| 405 } | |
| 406 | |
| 407 void LinkResolver::resolve_interface_method(methodHandle& resolved_method, | |
| 408 KlassHandle resolved_klass, | |
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409 Symbol* method_name, |
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410 Symbol* method_signature, |
| 0 | 411 KlassHandle current_klass, |
| 412 bool check_access, TRAPS) { | |
| 413 | |
| 414 // check if klass is interface | |
| 415 if (!resolved_klass->is_interface()) { | |
| 416 char buf[200]; | |
| 417 jio_snprintf(buf, sizeof(buf), "Found class %s, but interface was expected", Klass::cast(resolved_klass())->external_name()); | |
| 418 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
| 419 } | |
| 420 | |
| 421 // lookup method in this interface or its super, java.lang.Object | |
| 422 lookup_instance_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
| 423 | |
| 424 if (resolved_method.is_null()) { | |
| 425 // lookup method in all the super-interfaces | |
| 426 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
| 427 if (resolved_method.is_null()) { | |
| 428 // no method found | |
| 429 ResourceMark rm(THREAD); | |
| 430 THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(), | |
| 431 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
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432 method_name, |
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433 method_signature)); |
| 0 | 434 } |
| 435 } | |
| 436 | |
| 437 if (check_access) { | |
| 438 HandleMark hm(THREAD); | |
| 439 Handle loader (THREAD, instanceKlass::cast(current_klass())->class_loader()); | |
| 440 Handle class_loader (THREAD, instanceKlass::cast(resolved_method->method_holder())->class_loader()); | |
| 441 { | |
| 442 ResourceMark rm(THREAD); | |
| 443 char* failed_type_name = | |
| 444 SystemDictionary::check_signature_loaders(method_signature, loader, | |
| 445 class_loader, true, CHECK); | |
| 446 if (failed_type_name != NULL) { | |
| 447 const char* msg = "loader constraint violation: when resolving " | |
| 448 "interface method \"%s\" the class loader (instance of %s) of the " | |
| 449 "current class, %s, and the class loader (instance of %s) for " | |
| 450 "resolved class, %s, have different Class objects for the type %s " | |
| 451 "used in the signature"; | |
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452 char* sig = methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),method_name,method_signature); |
| 0 | 453 const char* loader1 = SystemDictionary::loader_name(loader()); |
| 454 char* current = instanceKlass::cast(current_klass())->name()->as_C_string(); | |
| 455 const char* loader2 = SystemDictionary::loader_name(class_loader()); | |
| 456 char* resolved = instanceKlass::cast(resolved_klass())->name()->as_C_string(); | |
| 457 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + | |
| 458 strlen(current) + strlen(loader2) + strlen(resolved) + | |
| 459 strlen(failed_type_name); | |
| 460 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); | |
| 461 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, | |
| 462 resolved, failed_type_name); | |
| 463 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); | |
| 464 } | |
| 465 } | |
| 466 } | |
| 467 } | |
| 468 | |
| 469 //------------------------------------------------------------------------------------------------------------------------ | |
| 470 // Field resolution | |
| 471 | |
| 472 void LinkResolver::check_field_accessability(KlassHandle ref_klass, | |
| 473 KlassHandle resolved_klass, | |
| 474 KlassHandle sel_klass, | |
| 475 fieldDescriptor& fd, | |
| 476 TRAPS) { | |
| 477 if (!Reflection::verify_field_access(ref_klass->as_klassOop(), | |
| 478 resolved_klass->as_klassOop(), | |
| 479 sel_klass->as_klassOop(), | |
| 480 fd.access_flags(), | |
| 481 true)) { | |
| 482 ResourceMark rm(THREAD); | |
| 483 Exceptions::fthrow( | |
| 484 THREAD_AND_LOCATION, | |
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485 vmSymbols::java_lang_IllegalAccessError(), |
| 0 | 486 "tried to access field %s.%s from class %s", |
| 487 sel_klass->external_name(), | |
| 488 fd.name()->as_C_string(), | |
| 489 ref_klass->external_name() | |
| 490 ); | |
| 491 return; | |
| 492 } | |
| 493 } | |
| 494 | |
| 495 void LinkResolver::resolve_field(FieldAccessInfo& result, constantPoolHandle pool, int index, Bytecodes::Code byte, bool check_only, TRAPS) { | |
| 496 resolve_field(result, pool, index, byte, check_only, true, CHECK); | |
| 497 } | |
| 498 | |
| 499 void LinkResolver::resolve_field(FieldAccessInfo& result, constantPoolHandle pool, int index, Bytecodes::Code byte, bool check_only, bool update_pool, TRAPS) { | |
| 500 assert(byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic || | |
| 501 byte == Bytecodes::_getfield || byte == Bytecodes::_putfield, "bad bytecode"); | |
| 502 | |
| 503 bool is_static = (byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic); | |
| 504 bool is_put = (byte == Bytecodes::_putfield || byte == Bytecodes::_putstatic); | |
| 505 | |
| 506 // resolve specified klass | |
| 507 KlassHandle resolved_klass; | |
| 508 if (update_pool) { | |
| 509 resolve_klass(resolved_klass, pool, index, CHECK); | |
| 510 } else { | |
| 511 resolve_klass_no_update(resolved_klass, pool, index, CHECK); | |
| 512 } | |
| 513 // Load these early in case the resolve of the containing klass fails | |
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514 Symbol* field = pool->name_ref_at(index); |
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515 Symbol* sig = pool->signature_ref_at(index); |
| 0 | 516 // Check if there's a resolved klass containing the field |
| 517 if( resolved_klass.is_null() ) { | |
| 518 ResourceMark rm(THREAD); | |
| 519 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); | |
| 520 } | |
| 521 | |
| 522 // Resolve instance field | |
| 523 fieldDescriptor fd; // find_field initializes fd if found | |
| 524 KlassHandle sel_klass(THREAD, instanceKlass::cast(resolved_klass())->find_field(field, sig, &fd)); | |
| 525 // check if field exists; i.e., if a klass containing the field def has been selected | |
| 526 if (sel_klass.is_null()){ | |
| 527 ResourceMark rm(THREAD); | |
| 528 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); | |
| 529 } | |
| 530 | |
| 531 // check access | |
| 532 KlassHandle ref_klass(THREAD, pool->pool_holder()); | |
| 533 check_field_accessability(ref_klass, resolved_klass, sel_klass, fd, CHECK); | |
| 534 | |
| 535 // check for errors | |
| 536 if (is_static != fd.is_static()) { | |
| 537 char msg[200]; | |
| 538 jio_snprintf(msg, sizeof(msg), "Expected %s field %s.%s", is_static ? "static" : "non-static", Klass::cast(resolved_klass())->external_name(), fd.name()->as_C_string()); | |
| 539 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), msg); | |
| 540 } | |
| 541 | |
| 542 // Final fields can only be accessed from its own class. | |
| 543 if (is_put && fd.access_flags().is_final() && sel_klass() != pool->pool_holder()) { | |
| 544 THROW(vmSymbols::java_lang_IllegalAccessError()); | |
| 545 } | |
| 546 | |
| 547 // initialize resolved_klass if necessary | |
| 548 // note 1: the klass which declared the field must be initialized (i.e, sel_klass) | |
| 549 // according to the newest JVM spec (5.5, p.170) - was bug (gri 7/28/99) | |
| 550 // | |
| 551 // note 2: we don't want to force initialization if we are just checking | |
| 552 // if the field access is legal; e.g., during compilation | |
| 553 if (is_static && !check_only) { | |
| 554 sel_klass->initialize(CHECK); | |
| 555 } | |
| 556 | |
| 557 { | |
| 558 HandleMark hm(THREAD); | |
| 559 Handle ref_loader (THREAD, instanceKlass::cast(ref_klass())->class_loader()); | |
| 560 Handle sel_loader (THREAD, instanceKlass::cast(sel_klass())->class_loader()); | |
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561 Symbol* signature_ref = pool->signature_ref_at(index); |
| 0 | 562 { |
| 563 ResourceMark rm(THREAD); | |
| 564 char* failed_type_name = | |
| 565 SystemDictionary::check_signature_loaders(signature_ref, | |
| 566 ref_loader, sel_loader, | |
| 567 false, | |
| 568 CHECK); | |
| 569 if (failed_type_name != NULL) { | |
| 570 const char* msg = "loader constraint violation: when resolving field" | |
| 571 " \"%s\" the class loader (instance of %s) of the referring class, " | |
| 572 "%s, and the class loader (instance of %s) for the field's resolved " | |
| 573 "type, %s, have different Class objects for that type"; | |
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574 char* field_name = field->as_C_string(); |
| 0 | 575 const char* loader1 = SystemDictionary::loader_name(ref_loader()); |
| 576 char* sel = instanceKlass::cast(sel_klass())->name()->as_C_string(); | |
| 577 const char* loader2 = SystemDictionary::loader_name(sel_loader()); | |
| 578 size_t buflen = strlen(msg) + strlen(field_name) + strlen(loader1) + | |
| 579 strlen(sel) + strlen(loader2) + strlen(failed_type_name); | |
| 580 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); | |
| 581 jio_snprintf(buf, buflen, msg, field_name, loader1, sel, loader2, | |
| 582 failed_type_name); | |
| 583 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); | |
| 584 } | |
| 585 } | |
| 586 } | |
| 587 | |
| 588 // return information. note that the klass is set to the actual klass containing the | |
| 589 // field, otherwise access of static fields in superclasses will not work. | |
| 590 KlassHandle holder (THREAD, fd.field_holder()); | |
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591 Symbol* name = fd.name(); |
| 0 | 592 result.set(holder, name, fd.index(), fd.offset(), fd.field_type(), fd.access_flags()); |
| 593 } | |
| 594 | |
| 595 | |
| 596 //------------------------------------------------------------------------------------------------------------------------ | |
| 597 // Invoke resolution | |
| 598 // | |
| 599 // Naming conventions: | |
| 600 // | |
| 601 // resolved_method the specified method (i.e., static receiver specified via constant pool index) | |
| 602 // sel_method the selected method (selected via run-time lookup; e.g., based on dynamic receiver class) | |
| 603 // resolved_klass the specified klass (i.e., specified via constant pool index) | |
| 604 // recv_klass the receiver klass | |
| 605 | |
| 606 | |
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607 void LinkResolver::resolve_static_call(CallInfo& result, KlassHandle& resolved_klass, Symbol* method_name, |
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608 Symbol* method_signature, KlassHandle current_klass, |
| 0 | 609 bool check_access, bool initialize_class, TRAPS) { |
| 610 methodHandle resolved_method; | |
| 611 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
| 612 resolved_klass = KlassHandle(THREAD, Klass::cast(resolved_method->method_holder())); | |
| 613 | |
| 614 // Initialize klass (this should only happen if everything is ok) | |
| 615 if (initialize_class && resolved_klass->should_be_initialized()) { | |
| 616 resolved_klass->initialize(CHECK); | |
| 617 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
| 618 } | |
| 619 | |
| 620 // setup result | |
| 621 result.set_static(resolved_klass, resolved_method, CHECK); | |
| 622 } | |
| 623 | |
| 624 // throws linktime exceptions | |
| 625 void LinkResolver::linktime_resolve_static_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
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626 Symbol* method_name, Symbol* method_signature, |
| 0 | 627 KlassHandle current_klass, bool check_access, TRAPS) { |
| 628 | |
| 629 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
| 630 assert(resolved_method->name() != vmSymbols::class_initializer_name(), "should have been checked in verifier"); | |
| 631 | |
| 632 // check if static | |
| 633 if (!resolved_method->is_static()) { | |
| 634 char buf[200]; | |
| 635 jio_snprintf(buf, sizeof(buf), "Expected static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
| 636 resolved_method->name(), | |
| 637 resolved_method->signature())); | |
| 638 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
| 639 } | |
| 640 } | |
| 641 | |
| 642 | |
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643 void LinkResolver::resolve_special_call(CallInfo& result, KlassHandle resolved_klass, Symbol* method_name, |
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644 Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS) { |
| 0 | 645 methodHandle resolved_method; |
| 646 linktime_resolve_special_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
| 647 runtime_resolve_special_method(result, resolved_method, resolved_klass, current_klass, check_access, CHECK); | |
| 648 } | |
| 649 | |
| 650 // throws linktime exceptions | |
| 651 void LinkResolver::linktime_resolve_special_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
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652 Symbol* method_name, Symbol* method_signature, |
| 0 | 653 KlassHandle current_klass, bool check_access, TRAPS) { |
| 654 | |
| 655 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
| 656 | |
| 657 // check if method name is <init>, that it is found in same klass as static type | |
| 658 if (resolved_method->name() == vmSymbols::object_initializer_name() && | |
| 659 resolved_method->method_holder() != resolved_klass()) { | |
| 660 ResourceMark rm(THREAD); | |
| 661 Exceptions::fthrow( | |
| 662 THREAD_AND_LOCATION, | |
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663 vmSymbols::java_lang_NoSuchMethodError(), |
| 0 | 664 "%s: method %s%s not found", |
| 665 resolved_klass->external_name(), | |
| 666 resolved_method->name()->as_C_string(), | |
| 667 resolved_method->signature()->as_C_string() | |
| 668 ); | |
| 669 return; | |
| 670 } | |
| 671 | |
| 672 // check if not static | |
| 673 if (resolved_method->is_static()) { | |
| 674 char buf[200]; | |
| 675 jio_snprintf(buf, sizeof(buf), | |
| 676 "Expecting non-static method %s", | |
| 677 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
| 678 resolved_method->name(), | |
| 679 resolved_method->signature())); | |
| 680 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
| 681 } | |
| 682 } | |
| 683 | |
| 684 // throws runtime exceptions | |
| 685 void LinkResolver::runtime_resolve_special_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, | |
| 686 KlassHandle current_klass, bool check_access, TRAPS) { | |
| 687 | |
| 688 // resolved method is selected method unless we have an old-style lookup | |
| 689 methodHandle sel_method(THREAD, resolved_method()); | |
| 690 | |
| 691 // check if this is an old-style super call and do a new lookup if so | |
| 692 { KlassHandle method_klass = KlassHandle(THREAD, | |
| 693 resolved_method->method_holder()); | |
| 694 | |
| 695 if (check_access && | |
| 696 // a) check if ACC_SUPER flag is set for the current class | |
| 697 current_klass->is_super() && | |
| 698 // b) check if the method class is a superclass of the current class (superclass relation is not reflexive!) | |
| 699 current_klass->is_subtype_of(method_klass()) && current_klass() != method_klass() && | |
| 700 // c) check if the method is not <init> | |
| 701 resolved_method->name() != vmSymbols::object_initializer_name()) { | |
| 702 // Lookup super method | |
| 703 KlassHandle super_klass(THREAD, current_klass->super()); | |
| 704 lookup_instance_method_in_klasses(sel_method, super_klass, | |
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705 resolved_method->name(), |
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706 resolved_method->signature(), CHECK); |
| 0 | 707 // check if found |
| 708 if (sel_method.is_null()) { | |
| 709 ResourceMark rm(THREAD); | |
| 710 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
| 711 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
| 712 resolved_method->name(), | |
| 713 resolved_method->signature())); | |
| 714 } | |
| 715 } | |
| 716 } | |
| 717 | |
| 718 // check if not static | |
| 719 if (sel_method->is_static()) { | |
| 720 char buf[200]; | |
| 721 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
| 722 resolved_method->name(), | |
| 723 resolved_method->signature())); | |
| 724 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
| 725 } | |
| 726 | |
| 727 // check if abstract | |
| 728 if (sel_method->is_abstract()) { | |
| 729 ResourceMark rm(THREAD); | |
| 730 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
| 731 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
| 732 sel_method->name(), | |
| 733 sel_method->signature())); | |
| 734 } | |
| 735 | |
| 736 // setup result | |
| 737 result.set_static(resolved_klass, sel_method, CHECK); | |
| 738 } | |
| 739 | |
| 740 void LinkResolver::resolve_virtual_call(CallInfo& result, Handle recv, KlassHandle receiver_klass, KlassHandle resolved_klass, | |
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741 Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, |
| 0 | 742 bool check_access, bool check_null_and_abstract, TRAPS) { |
| 743 methodHandle resolved_method; | |
| 744 linktime_resolve_virtual_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
| 745 runtime_resolve_virtual_method(result, resolved_method, resolved_klass, recv, receiver_klass, check_null_and_abstract, CHECK); | |
| 746 } | |
| 747 | |
| 748 // throws linktime exceptions | |
| 749 void LinkResolver::linktime_resolve_virtual_method(methodHandle &resolved_method, KlassHandle resolved_klass, | |
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750 Symbol* method_name, Symbol* method_signature, |
| 0 | 751 KlassHandle current_klass, bool check_access, TRAPS) { |
| 752 // normal method resolution | |
| 753 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
| 754 | |
| 755 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); | |
| 756 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); | |
| 757 | |
| 758 // check if not static | |
| 759 if (resolved_method->is_static()) { | |
| 760 char buf[200]; | |
| 761 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
| 762 resolved_method->name(), | |
| 763 resolved_method->signature())); | |
| 764 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
| 765 } | |
| 766 } | |
| 767 | |
| 768 // throws runtime exceptions | |
| 769 void LinkResolver::runtime_resolve_virtual_method(CallInfo& result, | |
| 770 methodHandle resolved_method, | |
| 771 KlassHandle resolved_klass, | |
| 772 Handle recv, | |
| 773 KlassHandle recv_klass, | |
| 774 bool check_null_and_abstract, | |
| 775 TRAPS) { | |
| 776 | |
| 777 // setup default return values | |
| 778 int vtable_index = methodOopDesc::invalid_vtable_index; | |
| 779 methodHandle selected_method; | |
| 780 | |
| 781 assert(recv.is_null() || recv->is_oop(), "receiver is not an oop"); | |
| 782 | |
| 783 // runtime method resolution | |
| 784 if (check_null_and_abstract && recv.is_null()) { // check if receiver exists | |
| 785 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 786 } | |
| 787 | |
| 788 // Virtual methods cannot be resolved before its klass has been linked, for otherwise the methodOop's | |
| 789 // has not been rewritten, and the vtable initialized. | |
| 790 assert(instanceKlass::cast(resolved_method->method_holder())->is_linked(), "must be linked"); | |
| 791 | |
| 792 // Virtual methods cannot be resolved before its klass has been linked, for otherwise the methodOop's | |
| 793 // has not been rewritten, and the vtable initialized. Make sure to do this after the nullcheck, since | |
| 794 // a missing receiver might result in a bogus lookup. | |
| 795 assert(instanceKlass::cast(resolved_method->method_holder())->is_linked(), "must be linked"); | |
| 796 | |
| 797 // do lookup based on receiver klass using the vtable index | |
| 798 if (resolved_method->method_holder()->klass_part()->is_interface()) { // miranda method | |
| 799 vtable_index = vtable_index_of_miranda_method(resolved_klass, | |
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800 resolved_method->name(), |
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801 resolved_method->signature(), CHECK); |
| 0 | 802 assert(vtable_index >= 0 , "we should have valid vtable index at this point"); |
| 803 | |
| 804 instanceKlass* inst = instanceKlass::cast(recv_klass()); | |
| 805 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); | |
| 806 } else { | |
| 807 // at this point we are sure that resolved_method is virtual and not | |
| 808 // a miranda method; therefore, it must have a valid vtable index. | |
| 809 vtable_index = resolved_method->vtable_index(); | |
| 810 // We could get a negative vtable_index for final methods, | |
| 811 // because as an optimization they are they are never put in the vtable, | |
| 812 // unless they override an existing method. | |
| 813 // If we do get a negative, it means the resolved method is the the selected | |
| 814 // method, and it can never be changed by an override. | |
| 815 if (vtable_index == methodOopDesc::nonvirtual_vtable_index) { | |
| 816 assert(resolved_method->can_be_statically_bound(), "cannot override this method"); | |
| 817 selected_method = resolved_method; | |
| 818 } else { | |
| 819 // recv_klass might be an arrayKlassOop but all vtables start at | |
| 820 // the same place. The cast is to avoid virtual call and assertion. | |
| 821 instanceKlass* inst = (instanceKlass*)recv_klass()->klass_part(); | |
| 822 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); | |
| 823 } | |
| 824 } | |
| 825 | |
| 826 // check if method exists | |
| 827 if (selected_method.is_null()) { | |
| 828 ResourceMark rm(THREAD); | |
| 829 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
| 830 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
| 831 resolved_method->name(), | |
| 832 resolved_method->signature())); | |
| 833 } | |
| 834 | |
| 835 // check if abstract | |
| 836 if (check_null_and_abstract && selected_method->is_abstract()) { | |
| 837 ResourceMark rm(THREAD); | |
| 838 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
| 839 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
| 840 selected_method->name(), | |
| 841 selected_method->signature())); | |
| 842 } | |
| 843 | |
| 844 // setup result | |
| 845 result.set_virtual(resolved_klass, recv_klass, resolved_method, selected_method, vtable_index, CHECK); | |
| 846 } | |
| 847 | |
| 848 void LinkResolver::resolve_interface_call(CallInfo& result, Handle recv, KlassHandle recv_klass, KlassHandle resolved_klass, | |
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849 Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, |
| 0 | 850 bool check_access, bool check_null_and_abstract, TRAPS) { |
| 851 methodHandle resolved_method; | |
| 852 linktime_resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
| 853 runtime_resolve_interface_method(result, resolved_method, resolved_klass, recv, recv_klass, check_null_and_abstract, CHECK); | |
| 854 } | |
| 855 | |
| 856 // throws linktime exceptions | |
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857 void LinkResolver::linktime_resolve_interface_method(methodHandle& resolved_method, KlassHandle resolved_klass, Symbol* method_name, |
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858 Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS) { |
| 0 | 859 // normal interface method resolution |
| 860 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
| 861 | |
| 862 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); | |
| 863 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); | |
| 864 } | |
| 865 | |
| 866 // throws runtime exceptions | |
| 867 void LinkResolver::runtime_resolve_interface_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, | |
| 868 Handle recv, KlassHandle recv_klass, bool check_null_and_abstract, TRAPS) { | |
| 869 // check if receiver exists | |
| 870 if (check_null_and_abstract && recv.is_null()) { | |
| 871 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 872 } | |
| 873 | |
| 874 // check if receiver klass implements the resolved interface | |
| 875 if (!recv_klass->is_subtype_of(resolved_klass())) { | |
| 876 char buf[200]; | |
| 877 jio_snprintf(buf, sizeof(buf), "Class %s does not implement the requested interface %s", | |
| 878 (Klass::cast(recv_klass()))->external_name(), | |
| 879 (Klass::cast(resolved_klass()))->external_name()); | |
| 880 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
| 881 } | |
| 882 // do lookup based on receiver klass | |
| 883 methodHandle sel_method; | |
| 884 lookup_instance_method_in_klasses(sel_method, recv_klass, | |
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885 resolved_method->name(), |
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886 resolved_method->signature(), CHECK); |
| 0 | 887 // check if method exists |
| 888 if (sel_method.is_null()) { | |
| 889 ResourceMark rm(THREAD); | |
| 890 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
| 891 methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()), | |
| 892 resolved_method->name(), | |
| 893 resolved_method->signature())); | |
| 894 } | |
| 895 // check if public | |
| 896 if (!sel_method->is_public()) { | |
| 897 ResourceMark rm(THREAD); | |
| 898 THROW_MSG(vmSymbols::java_lang_IllegalAccessError(), | |
| 899 methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()), | |
| 900 sel_method->name(), | |
| 901 sel_method->signature())); | |
| 902 } | |
| 903 // check if abstract | |
| 904 if (check_null_and_abstract && sel_method->is_abstract()) { | |
| 905 ResourceMark rm(THREAD); | |
| 906 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
| 907 methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()), | |
| 908 sel_method->name(), | |
| 909 sel_method->signature())); | |
| 910 } | |
| 911 // setup result | |
| 912 result.set_interface(resolved_klass, recv_klass, resolved_method, sel_method, CHECK); | |
| 913 } | |
| 914 | |
| 915 | |
| 916 methodHandle LinkResolver::linktime_resolve_interface_method_or_null( | |
| 917 KlassHandle resolved_klass, | |
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918 Symbol* method_name, |
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919 Symbol* method_signature, |
| 0 | 920 KlassHandle current_klass, |
| 921 bool check_access) { | |
| 922 EXCEPTION_MARK; | |
| 923 methodHandle method_result; | |
| 924 linktime_resolve_interface_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); | |
| 925 if (HAS_PENDING_EXCEPTION) { | |
| 926 CLEAR_PENDING_EXCEPTION; | |
| 927 return methodHandle(); | |
| 928 } else { | |
| 929 return method_result; | |
| 930 } | |
| 931 } | |
| 932 | |
| 933 methodHandle LinkResolver::linktime_resolve_virtual_method_or_null( | |
| 934 KlassHandle resolved_klass, | |
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935 Symbol* method_name, |
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936 Symbol* method_signature, |
| 0 | 937 KlassHandle current_klass, |
| 938 bool check_access) { | |
| 939 EXCEPTION_MARK; | |
| 940 methodHandle method_result; | |
| 941 linktime_resolve_virtual_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); | |
| 942 if (HAS_PENDING_EXCEPTION) { | |
| 943 CLEAR_PENDING_EXCEPTION; | |
| 944 return methodHandle(); | |
| 945 } else { | |
| 946 return method_result; | |
| 947 } | |
| 948 } | |
| 949 | |
| 950 methodHandle LinkResolver::resolve_virtual_call_or_null( | |
| 951 KlassHandle receiver_klass, | |
| 952 KlassHandle resolved_klass, | |
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953 Symbol* name, |
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954 Symbol* signature, |
| 0 | 955 KlassHandle current_klass) { |
| 956 EXCEPTION_MARK; | |
| 957 CallInfo info; | |
| 958 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
| 959 if (HAS_PENDING_EXCEPTION) { | |
| 960 CLEAR_PENDING_EXCEPTION; | |
| 961 return methodHandle(); | |
| 962 } | |
| 963 return info.selected_method(); | |
| 964 } | |
| 965 | |
| 966 methodHandle LinkResolver::resolve_interface_call_or_null( | |
| 967 KlassHandle receiver_klass, | |
| 968 KlassHandle resolved_klass, | |
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969 Symbol* name, |
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970 Symbol* signature, |
| 0 | 971 KlassHandle current_klass) { |
| 972 EXCEPTION_MARK; | |
| 973 CallInfo info; | |
| 974 resolve_interface_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
| 975 if (HAS_PENDING_EXCEPTION) { | |
| 976 CLEAR_PENDING_EXCEPTION; | |
| 977 return methodHandle(); | |
| 978 } | |
| 979 return info.selected_method(); | |
| 980 } | |
| 981 | |
| 982 int LinkResolver::resolve_virtual_vtable_index( | |
| 983 KlassHandle receiver_klass, | |
| 984 KlassHandle resolved_klass, | |
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985 Symbol* name, |
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986 Symbol* signature, |
| 0 | 987 KlassHandle current_klass) { |
| 988 EXCEPTION_MARK; | |
| 989 CallInfo info; | |
| 990 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
| 991 if (HAS_PENDING_EXCEPTION) { | |
| 992 CLEAR_PENDING_EXCEPTION; | |
| 993 return methodOopDesc::invalid_vtable_index; | |
| 994 } | |
| 995 return info.vtable_index(); | |
| 996 } | |
| 997 | |
| 998 methodHandle LinkResolver::resolve_static_call_or_null( | |
| 999 KlassHandle resolved_klass, | |
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1000 Symbol* name, |
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1001 Symbol* signature, |
| 0 | 1002 KlassHandle current_klass) { |
| 1003 EXCEPTION_MARK; | |
| 1004 CallInfo info; | |
| 1005 resolve_static_call(info, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
| 1006 if (HAS_PENDING_EXCEPTION) { | |
| 1007 CLEAR_PENDING_EXCEPTION; | |
| 1008 return methodHandle(); | |
| 1009 } | |
| 1010 return info.selected_method(); | |
| 1011 } | |
| 1012 | |
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1013 methodHandle LinkResolver::resolve_special_call_or_null(KlassHandle resolved_klass, Symbol* name, Symbol* signature, |
| 0 | 1014 KlassHandle current_klass) { |
| 1015 EXCEPTION_MARK; | |
| 1016 CallInfo info; | |
| 1017 resolve_special_call(info, resolved_klass, name, signature, current_klass, true, THREAD); | |
| 1018 if (HAS_PENDING_EXCEPTION) { | |
| 1019 CLEAR_PENDING_EXCEPTION; | |
| 1020 return methodHandle(); | |
| 1021 } | |
| 1022 return info.selected_method(); | |
| 1023 } | |
| 1024 | |
| 1025 | |
| 1026 | |
| 1027 //------------------------------------------------------------------------------------------------------------------------ | |
| 1028 // ConstantPool entries | |
| 1029 | |
| 1030 void LinkResolver::resolve_invoke(CallInfo& result, Handle recv, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS) { | |
| 1031 switch (byte) { | |
| 1032 case Bytecodes::_invokestatic : resolve_invokestatic (result, pool, index, CHECK); break; | |
| 1033 case Bytecodes::_invokespecial : resolve_invokespecial (result, pool, index, CHECK); break; | |
| 1034 case Bytecodes::_invokevirtual : resolve_invokevirtual (result, recv, pool, index, CHECK); break; | |
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1035 case Bytecodes::_invokedynamic : resolve_invokedynamic (result, pool, index, CHECK); break; |
| 0 | 1036 case Bytecodes::_invokeinterface: resolve_invokeinterface(result, recv, pool, index, CHECK); break; |
| 1037 } | |
| 1038 return; | |
| 1039 } | |
| 1040 | |
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1041 void LinkResolver::resolve_pool(KlassHandle& resolved_klass, Symbol*& method_name, Symbol*& method_signature, |
| 0 | 1042 KlassHandle& current_klass, constantPoolHandle pool, int index, TRAPS) { |
| 1043 // resolve klass | |
| 1044 resolve_klass(resolved_klass, pool, index, CHECK); | |
| 1045 | |
| 1046 // Get name, signature, and static klass | |
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1047 method_name = pool->name_ref_at(index); |
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1048 method_signature = pool->signature_ref_at(index); |
| 0 | 1049 current_klass = KlassHandle(THREAD, pool->pool_holder()); |
| 1050 } | |
| 1051 | |
| 1052 | |
| 1053 void LinkResolver::resolve_invokestatic(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { | |
| 1054 KlassHandle resolved_klass; | |
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1055 Symbol* method_name = NULL; |
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1056 Symbol* method_signature = NULL; |
| 0 | 1057 KlassHandle current_klass; |
| 1058 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
| 1059 resolve_static_call(result, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); | |
| 1060 } | |
| 1061 | |
| 1062 | |
| 1063 void LinkResolver::resolve_invokespecial(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { | |
| 1064 KlassHandle resolved_klass; | |
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1065 Symbol* method_name = NULL; |
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1066 Symbol* method_signature = NULL; |
| 0 | 1067 KlassHandle current_klass; |
| 1068 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
| 1069 resolve_special_call(result, resolved_klass, method_name, method_signature, current_klass, true, CHECK); | |
| 1070 } | |
| 1071 | |
| 1072 | |
| 1073 void LinkResolver::resolve_invokevirtual(CallInfo& result, Handle recv, | |
| 1074 constantPoolHandle pool, int index, | |
| 1075 TRAPS) { | |
| 1076 | |
| 1077 KlassHandle resolved_klass; | |
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1078 Symbol* method_name = NULL; |
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1079 Symbol* method_signature = NULL; |
| 0 | 1080 KlassHandle current_klass; |
| 1081 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
| 1082 KlassHandle recvrKlass (THREAD, recv.is_null() ? (klassOop)NULL : recv->klass()); | |
| 1083 resolve_virtual_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); | |
| 1084 } | |
| 1085 | |
| 1086 | |
| 1087 void LinkResolver::resolve_invokeinterface(CallInfo& result, Handle recv, constantPoolHandle pool, int index, TRAPS) { | |
| 1088 KlassHandle resolved_klass; | |
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1089 Symbol* method_name = NULL; |
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1090 Symbol* method_signature = NULL; |
| 0 | 1091 KlassHandle current_klass; |
| 1092 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
| 1093 KlassHandle recvrKlass (THREAD, recv.is_null() ? (klassOop)NULL : recv->klass()); | |
| 1094 resolve_interface_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); | |
| 1095 } | |
| 1096 | |
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1097 |
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1098 void LinkResolver::resolve_invokedynamic(CallInfo& result, constantPoolHandle pool, int raw_index, TRAPS) { |
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1099 assert(EnableInvokeDynamic, ""); |
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1100 |
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1101 // This guy is reached from InterpreterRuntime::resolve_invokedynamic. |
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1102 |
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1103 // At this point, we only need the signature, and can ignore the name. |
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1104 Symbol* method_signature = pool->signature_ref_at(raw_index); // raw_index works directly |
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1105 Symbol* method_name = vmSymbols::invokeExact_name(); |
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1106 KlassHandle resolved_klass = SystemDictionaryHandles::MethodHandle_klass(); |
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1107 |
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1108 // JSR 292: this must be an implicitly generated method MethodHandle.invokeExact(*...) |
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1109 // The extra MH receiver will be inserted into the stack on every call. |
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1110 methodHandle resolved_method; |
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1111 KlassHandle current_klass(THREAD, pool->pool_holder()); |
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1112 lookup_implicit_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, CHECK); |
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1113 if (resolved_method.is_null()) { |
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1114 THROW(vmSymbols::java_lang_InternalError()); |
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1115 } |
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1116 result.set_dynamic(resolved_method, CHECK); |
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1117 } |
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1118 |
| 0 | 1119 //------------------------------------------------------------------------------------------------------------------------ |
| 1120 #ifndef PRODUCT | |
| 1121 | |
| 1122 void FieldAccessInfo::print() { | |
| 1123 ResourceMark rm; | |
| 1124 tty->print_cr("Field %s@%d", name()->as_C_string(), field_offset()); | |
| 1125 } | |
| 1126 | |
| 1127 #endif |