Mercurial > hg > truffle
annotate src/share/vm/interpreter/linkResolver.cpp @ 2359:d2134498fd3f
7011865: JSR 292 CTW fails: !THREAD->is_Compiler_thread() failed: Can not load classes with the Compiler thre
Reviewed-by: kvn, never
| author | jrose |
|---|---|
| date | Thu, 17 Mar 2011 18:29:18 -0700 |
| parents | 8033953d67ff |
| children | 38fea01eb669 |
| 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 (EnableMethodHandles && 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 (EnableMethodHandles && |
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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()) { |
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224 Symbol* natives_name = vmSymbols::java_lang_invoke_MethodHandleNatives(); |
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225 if (natives != NULL && AllowTransitionalJSR292) natives_name = Klass::cast(natives)->name(); |
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226 SystemDictionary::resolve_or_fail(natives_name, |
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227 Handle(), |
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228 Handle(), |
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229 true, |
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230 CHECK); |
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231 } |
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232 } |
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233 methodOop result_oop = SystemDictionary::find_method_handle_invoke(name, |
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234 signature, |
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235 current_klass, |
| 710 | 236 CHECK); |
| 237 if (result_oop != NULL) { | |
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238 assert(result_oop->is_method_handle_invoke() && result_oop->signature() == signature, "consistent"); |
| 710 | 239 result = methodHandle(THREAD, result_oop); |
| 240 } | |
| 241 } | |
| 242 } | |
| 243 | |
| 0 | 244 void LinkResolver::check_method_accessability(KlassHandle ref_klass, |
| 245 KlassHandle resolved_klass, | |
| 246 KlassHandle sel_klass, | |
| 247 methodHandle sel_method, | |
| 248 TRAPS) { | |
| 249 | |
| 250 AccessFlags flags = sel_method->access_flags(); | |
| 251 | |
| 252 // Special case: arrays always override "clone". JVMS 2.15. | |
| 253 // If the resolved klass is an array class, and the declaring class | |
| 254 // is java.lang.Object and the method is "clone", set the flags | |
| 255 // to public. | |
| 256 // | |
| 257 // We'll check for the method name first, as that's most likely | |
| 258 // to be false (so we'll short-circuit out of these tests). | |
| 259 if (sel_method->name() == vmSymbols::clone_name() && | |
| 1142 | 260 sel_klass() == SystemDictionary::Object_klass() && |
| 0 | 261 resolved_klass->oop_is_array()) { |
| 262 // We need to change "protected" to "public". | |
| 263 assert(flags.is_protected(), "clone not protected?"); | |
| 264 jint new_flags = flags.as_int(); | |
| 265 new_flags = new_flags & (~JVM_ACC_PROTECTED); | |
| 266 new_flags = new_flags | JVM_ACC_PUBLIC; | |
| 267 flags.set_flags(new_flags); | |
| 268 } | |
| 269 | |
| 270 if (!Reflection::verify_field_access(ref_klass->as_klassOop(), | |
| 271 resolved_klass->as_klassOop(), | |
| 272 sel_klass->as_klassOop(), | |
| 273 flags, | |
| 274 true)) { | |
| 275 ResourceMark rm(THREAD); | |
| 276 Exceptions::fthrow( | |
| 277 THREAD_AND_LOCATION, | |
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278 vmSymbols::java_lang_IllegalAccessError(), |
| 0 | 279 "tried to access method %s.%s%s from class %s", |
| 280 sel_klass->external_name(), | |
| 281 sel_method->name()->as_C_string(), | |
| 282 sel_method->signature()->as_C_string(), | |
| 283 ref_klass->external_name() | |
| 284 ); | |
| 285 return; | |
| 286 } | |
| 287 } | |
| 288 | |
| 289 void LinkResolver::resolve_method(methodHandle& resolved_method, KlassHandle& resolved_klass, | |
| 290 constantPoolHandle pool, int index, TRAPS) { | |
| 291 | |
| 292 // resolve klass | |
| 293 resolve_klass(resolved_klass, pool, index, CHECK); | |
| 294 | |
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295 Symbol* method_name = pool->name_ref_at(index); |
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296 Symbol* method_signature = pool->signature_ref_at(index); |
| 0 | 297 KlassHandle current_klass(THREAD, pool->pool_holder()); |
| 298 | |
| 299 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); | |
| 300 } | |
| 301 | |
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302 void LinkResolver::resolve_dynamic_method(methodHandle& resolved_method, KlassHandle& resolved_klass, constantPoolHandle pool, int index, TRAPS) { |
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303 // The class is java.lang.invoke.MethodHandle |
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304 resolved_klass = SystemDictionaryHandles::MethodHandle_klass(); |
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305 |
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306 Symbol* method_name = vmSymbols::invokeExact_name(); |
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307 |
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308 Symbol* method_signature = pool->signature_ref_at(index); |
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309 KlassHandle current_klass (THREAD, pool->pool_holder()); |
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310 |
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311 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); |
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312 } |
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313 |
| 0 | 314 void LinkResolver::resolve_interface_method(methodHandle& resolved_method, KlassHandle& resolved_klass, constantPoolHandle pool, int index, TRAPS) { |
| 315 | |
| 316 // resolve klass | |
| 317 resolve_klass(resolved_klass, pool, index, CHECK); | |
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318 Symbol* method_name = pool->name_ref_at(index); |
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319 Symbol* method_signature = pool->signature_ref_at(index); |
| 0 | 320 KlassHandle current_klass(THREAD, pool->pool_holder()); |
| 321 | |
| 322 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); | |
| 323 } | |
| 324 | |
| 325 | |
| 326 void LinkResolver::resolve_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
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327 Symbol* method_name, Symbol* method_signature, |
| 0 | 328 KlassHandle current_klass, bool check_access, TRAPS) { |
| 329 | |
| 330 // 1. check if klass is not interface | |
| 331 if (resolved_klass->is_interface()) { | |
| 332 char buf[200]; | |
| 333 jio_snprintf(buf, sizeof(buf), "Found interface %s, but class was expected", Klass::cast(resolved_klass())->external_name()); | |
| 334 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
| 335 } | |
| 336 | |
| 337 // 2. lookup method in resolved klass and its super klasses | |
| 338 lookup_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
| 339 | |
| 340 if (resolved_method.is_null()) { // not found in the class hierarchy | |
| 341 // 3. lookup method in all the interfaces implemented by the resolved klass | |
| 342 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
| 343 | |
| 344 if (resolved_method.is_null()) { | |
| 710 | 345 // JSR 292: see if this is an implicitly generated method MethodHandle.invoke(*...) |
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346 lookup_implicit_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, CHECK); |
| 710 | 347 } |
| 348 | |
| 349 if (resolved_method.is_null()) { | |
| 0 | 350 // 4. method lookup failed |
| 351 ResourceMark rm(THREAD); | |
| 352 THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(), | |
| 353 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
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354 method_name, |
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355 method_signature)); |
| 0 | 356 } |
| 357 } | |
| 358 | |
| 359 // 5. check if method is concrete | |
| 360 if (resolved_method->is_abstract() && !resolved_klass->is_abstract()) { | |
| 361 ResourceMark rm(THREAD); | |
| 362 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
| 363 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
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364 method_name, |
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365 method_signature)); |
| 0 | 366 } |
| 367 | |
| 368 // 6. access checks, access checking may be turned off when calling from within the VM. | |
| 369 if (check_access) { | |
| 370 assert(current_klass.not_null() , "current_klass should not be null"); | |
| 371 | |
| 372 // check if method can be accessed by the referring class | |
| 373 check_method_accessability(current_klass, | |
| 374 resolved_klass, | |
| 375 KlassHandle(THREAD, resolved_method->method_holder()), | |
| 376 resolved_method, | |
| 377 CHECK); | |
| 378 | |
| 379 // check loader constraints | |
| 380 Handle loader (THREAD, instanceKlass::cast(current_klass())->class_loader()); | |
| 381 Handle class_loader (THREAD, instanceKlass::cast(resolved_method->method_holder())->class_loader()); | |
| 382 { | |
| 383 ResourceMark rm(THREAD); | |
| 384 char* failed_type_name = | |
| 385 SystemDictionary::check_signature_loaders(method_signature, loader, | |
| 386 class_loader, true, CHECK); | |
| 387 if (failed_type_name != NULL) { | |
| 388 const char* msg = "loader constraint violation: when resolving method" | |
| 389 " \"%s\" the class loader (instance of %s) of the current class, %s," | |
| 390 " and the class loader (instance of %s) for resolved class, %s, have" | |
| 391 " different Class objects for the type %s used in the signature"; | |
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392 char* sig = methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),method_name,method_signature); |
| 0 | 393 const char* loader1 = SystemDictionary::loader_name(loader()); |
| 394 char* current = instanceKlass::cast(current_klass())->name()->as_C_string(); | |
| 395 const char* loader2 = SystemDictionary::loader_name(class_loader()); | |
| 396 char* resolved = instanceKlass::cast(resolved_klass())->name()->as_C_string(); | |
| 397 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + | |
| 398 strlen(current) + strlen(loader2) + strlen(resolved) + | |
| 399 strlen(failed_type_name); | |
| 400 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); | |
| 401 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, | |
| 402 resolved, failed_type_name); | |
| 403 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); | |
| 404 } | |
| 405 } | |
| 406 } | |
| 407 } | |
| 408 | |
| 409 void LinkResolver::resolve_interface_method(methodHandle& resolved_method, | |
| 410 KlassHandle resolved_klass, | |
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411 Symbol* method_name, |
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412 Symbol* method_signature, |
| 0 | 413 KlassHandle current_klass, |
| 414 bool check_access, TRAPS) { | |
| 415 | |
| 416 // check if klass is interface | |
| 417 if (!resolved_klass->is_interface()) { | |
| 418 char buf[200]; | |
| 419 jio_snprintf(buf, sizeof(buf), "Found class %s, but interface was expected", Klass::cast(resolved_klass())->external_name()); | |
| 420 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
| 421 } | |
| 422 | |
| 423 // lookup method in this interface or its super, java.lang.Object | |
| 424 lookup_instance_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
| 425 | |
| 426 if (resolved_method.is_null()) { | |
| 427 // lookup method in all the super-interfaces | |
| 428 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
| 429 if (resolved_method.is_null()) { | |
| 430 // no method found | |
| 431 ResourceMark rm(THREAD); | |
| 432 THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(), | |
| 433 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
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434 method_name, |
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435 method_signature)); |
| 0 | 436 } |
| 437 } | |
| 438 | |
| 439 if (check_access) { | |
| 440 HandleMark hm(THREAD); | |
| 441 Handle loader (THREAD, instanceKlass::cast(current_klass())->class_loader()); | |
| 442 Handle class_loader (THREAD, instanceKlass::cast(resolved_method->method_holder())->class_loader()); | |
| 443 { | |
| 444 ResourceMark rm(THREAD); | |
| 445 char* failed_type_name = | |
| 446 SystemDictionary::check_signature_loaders(method_signature, loader, | |
| 447 class_loader, true, CHECK); | |
| 448 if (failed_type_name != NULL) { | |
| 449 const char* msg = "loader constraint violation: when resolving " | |
| 450 "interface method \"%s\" the class loader (instance of %s) of the " | |
| 451 "current class, %s, and the class loader (instance of %s) for " | |
| 452 "resolved class, %s, have different Class objects for the type %s " | |
| 453 "used in the signature"; | |
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454 char* sig = methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),method_name,method_signature); |
| 0 | 455 const char* loader1 = SystemDictionary::loader_name(loader()); |
| 456 char* current = instanceKlass::cast(current_klass())->name()->as_C_string(); | |
| 457 const char* loader2 = SystemDictionary::loader_name(class_loader()); | |
| 458 char* resolved = instanceKlass::cast(resolved_klass())->name()->as_C_string(); | |
| 459 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + | |
| 460 strlen(current) + strlen(loader2) + strlen(resolved) + | |
| 461 strlen(failed_type_name); | |
| 462 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); | |
| 463 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, | |
| 464 resolved, failed_type_name); | |
| 465 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); | |
| 466 } | |
| 467 } | |
| 468 } | |
| 469 } | |
| 470 | |
| 471 //------------------------------------------------------------------------------------------------------------------------ | |
| 472 // Field resolution | |
| 473 | |
| 474 void LinkResolver::check_field_accessability(KlassHandle ref_klass, | |
| 475 KlassHandle resolved_klass, | |
| 476 KlassHandle sel_klass, | |
| 477 fieldDescriptor& fd, | |
| 478 TRAPS) { | |
| 479 if (!Reflection::verify_field_access(ref_klass->as_klassOop(), | |
| 480 resolved_klass->as_klassOop(), | |
| 481 sel_klass->as_klassOop(), | |
| 482 fd.access_flags(), | |
| 483 true)) { | |
| 484 ResourceMark rm(THREAD); | |
| 485 Exceptions::fthrow( | |
| 486 THREAD_AND_LOCATION, | |
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487 vmSymbols::java_lang_IllegalAccessError(), |
| 0 | 488 "tried to access field %s.%s from class %s", |
| 489 sel_klass->external_name(), | |
| 490 fd.name()->as_C_string(), | |
| 491 ref_klass->external_name() | |
| 492 ); | |
| 493 return; | |
| 494 } | |
| 495 } | |
| 496 | |
| 497 void LinkResolver::resolve_field(FieldAccessInfo& result, constantPoolHandle pool, int index, Bytecodes::Code byte, bool check_only, TRAPS) { | |
| 498 resolve_field(result, pool, index, byte, check_only, true, CHECK); | |
| 499 } | |
| 500 | |
| 501 void LinkResolver::resolve_field(FieldAccessInfo& result, constantPoolHandle pool, int index, Bytecodes::Code byte, bool check_only, bool update_pool, TRAPS) { | |
| 502 assert(byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic || | |
| 503 byte == Bytecodes::_getfield || byte == Bytecodes::_putfield, "bad bytecode"); | |
| 504 | |
| 505 bool is_static = (byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic); | |
| 506 bool is_put = (byte == Bytecodes::_putfield || byte == Bytecodes::_putstatic); | |
| 507 | |
| 508 // resolve specified klass | |
| 509 KlassHandle resolved_klass; | |
| 510 if (update_pool) { | |
| 511 resolve_klass(resolved_klass, pool, index, CHECK); | |
| 512 } else { | |
| 513 resolve_klass_no_update(resolved_klass, pool, index, CHECK); | |
| 514 } | |
| 515 // Load these early in case the resolve of the containing klass fails | |
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516 Symbol* field = pool->name_ref_at(index); |
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517 Symbol* sig = pool->signature_ref_at(index); |
| 0 | 518 // Check if there's a resolved klass containing the field |
| 519 if( resolved_klass.is_null() ) { | |
| 520 ResourceMark rm(THREAD); | |
| 521 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); | |
| 522 } | |
| 523 | |
| 524 // Resolve instance field | |
| 525 fieldDescriptor fd; // find_field initializes fd if found | |
| 526 KlassHandle sel_klass(THREAD, instanceKlass::cast(resolved_klass())->find_field(field, sig, &fd)); | |
| 527 // check if field exists; i.e., if a klass containing the field def has been selected | |
| 528 if (sel_klass.is_null()){ | |
| 529 ResourceMark rm(THREAD); | |
| 530 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); | |
| 531 } | |
| 532 | |
| 533 // check access | |
| 534 KlassHandle ref_klass(THREAD, pool->pool_holder()); | |
| 535 check_field_accessability(ref_klass, resolved_klass, sel_klass, fd, CHECK); | |
| 536 | |
| 537 // check for errors | |
| 538 if (is_static != fd.is_static()) { | |
| 539 char msg[200]; | |
| 540 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()); | |
| 541 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), msg); | |
| 542 } | |
| 543 | |
| 544 // Final fields can only be accessed from its own class. | |
| 545 if (is_put && fd.access_flags().is_final() && sel_klass() != pool->pool_holder()) { | |
| 546 THROW(vmSymbols::java_lang_IllegalAccessError()); | |
| 547 } | |
| 548 | |
| 549 // initialize resolved_klass if necessary | |
| 550 // note 1: the klass which declared the field must be initialized (i.e, sel_klass) | |
| 551 // according to the newest JVM spec (5.5, p.170) - was bug (gri 7/28/99) | |
| 552 // | |
| 553 // note 2: we don't want to force initialization if we are just checking | |
| 554 // if the field access is legal; e.g., during compilation | |
| 555 if (is_static && !check_only) { | |
| 556 sel_klass->initialize(CHECK); | |
| 557 } | |
| 558 | |
| 559 { | |
| 560 HandleMark hm(THREAD); | |
| 561 Handle ref_loader (THREAD, instanceKlass::cast(ref_klass())->class_loader()); | |
| 562 Handle sel_loader (THREAD, instanceKlass::cast(sel_klass())->class_loader()); | |
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563 Symbol* signature_ref = pool->signature_ref_at(index); |
| 0 | 564 { |
| 565 ResourceMark rm(THREAD); | |
| 566 char* failed_type_name = | |
| 567 SystemDictionary::check_signature_loaders(signature_ref, | |
| 568 ref_loader, sel_loader, | |
| 569 false, | |
| 570 CHECK); | |
| 571 if (failed_type_name != NULL) { | |
| 572 const char* msg = "loader constraint violation: when resolving field" | |
| 573 " \"%s\" the class loader (instance of %s) of the referring class, " | |
| 574 "%s, and the class loader (instance of %s) for the field's resolved " | |
| 575 "type, %s, have different Class objects for that type"; | |
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576 char* field_name = field->as_C_string(); |
| 0 | 577 const char* loader1 = SystemDictionary::loader_name(ref_loader()); |
| 578 char* sel = instanceKlass::cast(sel_klass())->name()->as_C_string(); | |
| 579 const char* loader2 = SystemDictionary::loader_name(sel_loader()); | |
| 580 size_t buflen = strlen(msg) + strlen(field_name) + strlen(loader1) + | |
| 581 strlen(sel) + strlen(loader2) + strlen(failed_type_name); | |
| 582 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); | |
| 583 jio_snprintf(buf, buflen, msg, field_name, loader1, sel, loader2, | |
| 584 failed_type_name); | |
| 585 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); | |
| 586 } | |
| 587 } | |
| 588 } | |
| 589 | |
| 590 // return information. note that the klass is set to the actual klass containing the | |
| 591 // field, otherwise access of static fields in superclasses will not work. | |
| 592 KlassHandle holder (THREAD, fd.field_holder()); | |
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593 Symbol* name = fd.name(); |
| 0 | 594 result.set(holder, name, fd.index(), fd.offset(), fd.field_type(), fd.access_flags()); |
| 595 } | |
| 596 | |
| 597 | |
| 598 //------------------------------------------------------------------------------------------------------------------------ | |
| 599 // Invoke resolution | |
| 600 // | |
| 601 // Naming conventions: | |
| 602 // | |
| 603 // resolved_method the specified method (i.e., static receiver specified via constant pool index) | |
| 604 // sel_method the selected method (selected via run-time lookup; e.g., based on dynamic receiver class) | |
| 605 // resolved_klass the specified klass (i.e., specified via constant pool index) | |
| 606 // recv_klass the receiver klass | |
| 607 | |
| 608 | |
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609 void LinkResolver::resolve_static_call(CallInfo& result, KlassHandle& resolved_klass, Symbol* method_name, |
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610 Symbol* method_signature, KlassHandle current_klass, |
| 0 | 611 bool check_access, bool initialize_class, TRAPS) { |
| 612 methodHandle resolved_method; | |
| 613 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
| 614 resolved_klass = KlassHandle(THREAD, Klass::cast(resolved_method->method_holder())); | |
| 615 | |
| 616 // Initialize klass (this should only happen if everything is ok) | |
| 617 if (initialize_class && resolved_klass->should_be_initialized()) { | |
| 618 resolved_klass->initialize(CHECK); | |
| 619 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
| 620 } | |
| 621 | |
| 622 // setup result | |
| 623 result.set_static(resolved_klass, resolved_method, CHECK); | |
| 624 } | |
| 625 | |
| 626 // throws linktime exceptions | |
| 627 void LinkResolver::linktime_resolve_static_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
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628 Symbol* method_name, Symbol* method_signature, |
| 0 | 629 KlassHandle current_klass, bool check_access, TRAPS) { |
| 630 | |
| 631 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
| 632 assert(resolved_method->name() != vmSymbols::class_initializer_name(), "should have been checked in verifier"); | |
| 633 | |
| 634 // check if static | |
| 635 if (!resolved_method->is_static()) { | |
| 636 char buf[200]; | |
| 637 jio_snprintf(buf, sizeof(buf), "Expected static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
| 638 resolved_method->name(), | |
| 639 resolved_method->signature())); | |
| 640 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
| 641 } | |
| 642 } | |
| 643 | |
| 644 | |
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645 void LinkResolver::resolve_special_call(CallInfo& result, KlassHandle resolved_klass, Symbol* method_name, |
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646 Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS) { |
| 0 | 647 methodHandle resolved_method; |
| 648 linktime_resolve_special_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
| 649 runtime_resolve_special_method(result, resolved_method, resolved_klass, current_klass, check_access, CHECK); | |
| 650 } | |
| 651 | |
| 652 // throws linktime exceptions | |
| 653 void LinkResolver::linktime_resolve_special_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
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654 Symbol* method_name, Symbol* method_signature, |
| 0 | 655 KlassHandle current_klass, bool check_access, TRAPS) { |
| 656 | |
| 657 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
| 658 | |
| 659 // check if method name is <init>, that it is found in same klass as static type | |
| 660 if (resolved_method->name() == vmSymbols::object_initializer_name() && | |
| 661 resolved_method->method_holder() != resolved_klass()) { | |
| 662 ResourceMark rm(THREAD); | |
| 663 Exceptions::fthrow( | |
| 664 THREAD_AND_LOCATION, | |
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665 vmSymbols::java_lang_NoSuchMethodError(), |
| 0 | 666 "%s: method %s%s not found", |
| 667 resolved_klass->external_name(), | |
| 668 resolved_method->name()->as_C_string(), | |
| 669 resolved_method->signature()->as_C_string() | |
| 670 ); | |
| 671 return; | |
| 672 } | |
| 673 | |
| 674 // check if not static | |
| 675 if (resolved_method->is_static()) { | |
| 676 char buf[200]; | |
| 677 jio_snprintf(buf, sizeof(buf), | |
| 678 "Expecting non-static method %s", | |
| 679 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
| 680 resolved_method->name(), | |
| 681 resolved_method->signature())); | |
| 682 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
| 683 } | |
| 684 } | |
| 685 | |
| 686 // throws runtime exceptions | |
| 687 void LinkResolver::runtime_resolve_special_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, | |
| 688 KlassHandle current_klass, bool check_access, TRAPS) { | |
| 689 | |
| 690 // resolved method is selected method unless we have an old-style lookup | |
| 691 methodHandle sel_method(THREAD, resolved_method()); | |
| 692 | |
| 693 // check if this is an old-style super call and do a new lookup if so | |
| 694 { KlassHandle method_klass = KlassHandle(THREAD, | |
| 695 resolved_method->method_holder()); | |
| 696 | |
| 697 if (check_access && | |
| 698 // a) check if ACC_SUPER flag is set for the current class | |
| 699 current_klass->is_super() && | |
| 700 // b) check if the method class is a superclass of the current class (superclass relation is not reflexive!) | |
| 701 current_klass->is_subtype_of(method_klass()) && current_klass() != method_klass() && | |
| 702 // c) check if the method is not <init> | |
| 703 resolved_method->name() != vmSymbols::object_initializer_name()) { | |
| 704 // Lookup super method | |
| 705 KlassHandle super_klass(THREAD, current_klass->super()); | |
| 706 lookup_instance_method_in_klasses(sel_method, super_klass, | |
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707 resolved_method->name(), |
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708 resolved_method->signature(), CHECK); |
| 0 | 709 // check if found |
| 710 if (sel_method.is_null()) { | |
| 711 ResourceMark rm(THREAD); | |
| 712 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
| 713 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
| 714 resolved_method->name(), | |
| 715 resolved_method->signature())); | |
| 716 } | |
| 717 } | |
| 718 } | |
| 719 | |
| 720 // check if not static | |
| 721 if (sel_method->is_static()) { | |
| 722 char buf[200]; | |
| 723 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
| 724 resolved_method->name(), | |
| 725 resolved_method->signature())); | |
| 726 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
| 727 } | |
| 728 | |
| 729 // check if abstract | |
| 730 if (sel_method->is_abstract()) { | |
| 731 ResourceMark rm(THREAD); | |
| 732 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
| 733 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
| 734 sel_method->name(), | |
| 735 sel_method->signature())); | |
| 736 } | |
| 737 | |
| 738 // setup result | |
| 739 result.set_static(resolved_klass, sel_method, CHECK); | |
| 740 } | |
| 741 | |
| 742 void LinkResolver::resolve_virtual_call(CallInfo& result, Handle recv, KlassHandle receiver_klass, KlassHandle resolved_klass, | |
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743 Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, |
| 0 | 744 bool check_access, bool check_null_and_abstract, TRAPS) { |
| 745 methodHandle resolved_method; | |
| 746 linktime_resolve_virtual_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
| 747 runtime_resolve_virtual_method(result, resolved_method, resolved_klass, recv, receiver_klass, check_null_and_abstract, CHECK); | |
| 748 } | |
| 749 | |
| 750 // throws linktime exceptions | |
| 751 void LinkResolver::linktime_resolve_virtual_method(methodHandle &resolved_method, KlassHandle resolved_klass, | |
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752 Symbol* method_name, Symbol* method_signature, |
| 0 | 753 KlassHandle current_klass, bool check_access, TRAPS) { |
| 754 // normal method resolution | |
| 755 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
| 756 | |
| 757 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); | |
| 758 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); | |
| 759 | |
| 760 // check if not static | |
| 761 if (resolved_method->is_static()) { | |
| 762 char buf[200]; | |
| 763 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
| 764 resolved_method->name(), | |
| 765 resolved_method->signature())); | |
| 766 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
| 767 } | |
| 768 } | |
| 769 | |
| 770 // throws runtime exceptions | |
| 771 void LinkResolver::runtime_resolve_virtual_method(CallInfo& result, | |
| 772 methodHandle resolved_method, | |
| 773 KlassHandle resolved_klass, | |
| 774 Handle recv, | |
| 775 KlassHandle recv_klass, | |
| 776 bool check_null_and_abstract, | |
| 777 TRAPS) { | |
| 778 | |
| 779 // setup default return values | |
| 780 int vtable_index = methodOopDesc::invalid_vtable_index; | |
| 781 methodHandle selected_method; | |
| 782 | |
| 783 assert(recv.is_null() || recv->is_oop(), "receiver is not an oop"); | |
| 784 | |
| 785 // runtime method resolution | |
| 786 if (check_null_and_abstract && recv.is_null()) { // check if receiver exists | |
| 787 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 788 } | |
| 789 | |
| 790 // Virtual methods cannot be resolved before its klass has been linked, for otherwise the methodOop's | |
| 791 // has not been rewritten, and the vtable initialized. | |
| 792 assert(instanceKlass::cast(resolved_method->method_holder())->is_linked(), "must be linked"); | |
| 793 | |
| 794 // Virtual methods cannot be resolved before its klass has been linked, for otherwise the methodOop's | |
| 795 // has not been rewritten, and the vtable initialized. Make sure to do this after the nullcheck, since | |
| 796 // a missing receiver might result in a bogus lookup. | |
| 797 assert(instanceKlass::cast(resolved_method->method_holder())->is_linked(), "must be linked"); | |
| 798 | |
| 799 // do lookup based on receiver klass using the vtable index | |
| 800 if (resolved_method->method_holder()->klass_part()->is_interface()) { // miranda method | |
| 801 vtable_index = vtable_index_of_miranda_method(resolved_klass, | |
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802 resolved_method->name(), |
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803 resolved_method->signature(), CHECK); |
| 0 | 804 assert(vtable_index >= 0 , "we should have valid vtable index at this point"); |
| 805 | |
| 806 instanceKlass* inst = instanceKlass::cast(recv_klass()); | |
| 807 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); | |
| 808 } else { | |
| 809 // at this point we are sure that resolved_method is virtual and not | |
| 810 // a miranda method; therefore, it must have a valid vtable index. | |
| 811 vtable_index = resolved_method->vtable_index(); | |
| 812 // We could get a negative vtable_index for final methods, | |
| 813 // because as an optimization they are they are never put in the vtable, | |
| 814 // unless they override an existing method. | |
| 815 // If we do get a negative, it means the resolved method is the the selected | |
| 816 // method, and it can never be changed by an override. | |
| 817 if (vtable_index == methodOopDesc::nonvirtual_vtable_index) { | |
| 818 assert(resolved_method->can_be_statically_bound(), "cannot override this method"); | |
| 819 selected_method = resolved_method; | |
| 820 } else { | |
| 821 // recv_klass might be an arrayKlassOop but all vtables start at | |
| 822 // the same place. The cast is to avoid virtual call and assertion. | |
| 823 instanceKlass* inst = (instanceKlass*)recv_klass()->klass_part(); | |
| 824 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); | |
| 825 } | |
| 826 } | |
| 827 | |
| 828 // check if method exists | |
| 829 if (selected_method.is_null()) { | |
| 830 ResourceMark rm(THREAD); | |
| 831 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
| 832 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
| 833 resolved_method->name(), | |
| 834 resolved_method->signature())); | |
| 835 } | |
| 836 | |
| 837 // check if abstract | |
| 838 if (check_null_and_abstract && selected_method->is_abstract()) { | |
| 839 ResourceMark rm(THREAD); | |
| 840 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
| 841 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
| 842 selected_method->name(), | |
| 843 selected_method->signature())); | |
| 844 } | |
| 845 | |
| 846 // setup result | |
| 847 result.set_virtual(resolved_klass, recv_klass, resolved_method, selected_method, vtable_index, CHECK); | |
| 848 } | |
| 849 | |
| 850 void LinkResolver::resolve_interface_call(CallInfo& result, Handle recv, KlassHandle recv_klass, KlassHandle resolved_klass, | |
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851 Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, |
| 0 | 852 bool check_access, bool check_null_and_abstract, TRAPS) { |
| 853 methodHandle resolved_method; | |
| 854 linktime_resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
| 855 runtime_resolve_interface_method(result, resolved_method, resolved_klass, recv, recv_klass, check_null_and_abstract, CHECK); | |
| 856 } | |
| 857 | |
| 858 // throws linktime exceptions | |
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859 void LinkResolver::linktime_resolve_interface_method(methodHandle& resolved_method, KlassHandle resolved_klass, Symbol* method_name, |
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860 Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS) { |
| 0 | 861 // normal interface method resolution |
| 862 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
| 863 | |
| 864 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); | |
| 865 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); | |
| 866 } | |
| 867 | |
| 868 // throws runtime exceptions | |
| 869 void LinkResolver::runtime_resolve_interface_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, | |
| 870 Handle recv, KlassHandle recv_klass, bool check_null_and_abstract, TRAPS) { | |
| 871 // check if receiver exists | |
| 872 if (check_null_and_abstract && recv.is_null()) { | |
| 873 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 874 } | |
| 875 | |
| 876 // check if receiver klass implements the resolved interface | |
| 877 if (!recv_klass->is_subtype_of(resolved_klass())) { | |
| 878 char buf[200]; | |
| 879 jio_snprintf(buf, sizeof(buf), "Class %s does not implement the requested interface %s", | |
| 880 (Klass::cast(recv_klass()))->external_name(), | |
| 881 (Klass::cast(resolved_klass()))->external_name()); | |
| 882 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
| 883 } | |
| 884 // do lookup based on receiver klass | |
| 885 methodHandle sel_method; | |
| 886 lookup_instance_method_in_klasses(sel_method, recv_klass, | |
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887 resolved_method->name(), |
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888 resolved_method->signature(), CHECK); |
| 0 | 889 // check if method exists |
| 890 if (sel_method.is_null()) { | |
| 891 ResourceMark rm(THREAD); | |
| 892 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
| 893 methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()), | |
| 894 resolved_method->name(), | |
| 895 resolved_method->signature())); | |
| 896 } | |
| 897 // check if public | |
| 898 if (!sel_method->is_public()) { | |
| 899 ResourceMark rm(THREAD); | |
| 900 THROW_MSG(vmSymbols::java_lang_IllegalAccessError(), | |
| 901 methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()), | |
| 902 sel_method->name(), | |
| 903 sel_method->signature())); | |
| 904 } | |
| 905 // check if abstract | |
| 906 if (check_null_and_abstract && sel_method->is_abstract()) { | |
| 907 ResourceMark rm(THREAD); | |
| 908 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
| 909 methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()), | |
| 910 sel_method->name(), | |
| 911 sel_method->signature())); | |
| 912 } | |
| 913 // setup result | |
| 914 result.set_interface(resolved_klass, recv_klass, resolved_method, sel_method, CHECK); | |
| 915 } | |
| 916 | |
| 917 | |
| 918 methodHandle LinkResolver::linktime_resolve_interface_method_or_null( | |
| 919 KlassHandle resolved_klass, | |
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920 Symbol* method_name, |
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921 Symbol* method_signature, |
| 0 | 922 KlassHandle current_klass, |
| 923 bool check_access) { | |
| 924 EXCEPTION_MARK; | |
| 925 methodHandle method_result; | |
| 926 linktime_resolve_interface_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); | |
| 927 if (HAS_PENDING_EXCEPTION) { | |
| 928 CLEAR_PENDING_EXCEPTION; | |
| 929 return methodHandle(); | |
| 930 } else { | |
| 931 return method_result; | |
| 932 } | |
| 933 } | |
| 934 | |
| 935 methodHandle LinkResolver::linktime_resolve_virtual_method_or_null( | |
| 936 KlassHandle resolved_klass, | |
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937 Symbol* method_name, |
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938 Symbol* method_signature, |
| 0 | 939 KlassHandle current_klass, |
| 940 bool check_access) { | |
| 941 EXCEPTION_MARK; | |
| 942 methodHandle method_result; | |
| 943 linktime_resolve_virtual_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); | |
| 944 if (HAS_PENDING_EXCEPTION) { | |
| 945 CLEAR_PENDING_EXCEPTION; | |
| 946 return methodHandle(); | |
| 947 } else { | |
| 948 return method_result; | |
| 949 } | |
| 950 } | |
| 951 | |
| 952 methodHandle LinkResolver::resolve_virtual_call_or_null( | |
| 953 KlassHandle receiver_klass, | |
| 954 KlassHandle resolved_klass, | |
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955 Symbol* name, |
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956 Symbol* signature, |
| 0 | 957 KlassHandle current_klass) { |
| 958 EXCEPTION_MARK; | |
| 959 CallInfo info; | |
| 960 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
| 961 if (HAS_PENDING_EXCEPTION) { | |
| 962 CLEAR_PENDING_EXCEPTION; | |
| 963 return methodHandle(); | |
| 964 } | |
| 965 return info.selected_method(); | |
| 966 } | |
| 967 | |
| 968 methodHandle LinkResolver::resolve_interface_call_or_null( | |
| 969 KlassHandle receiver_klass, | |
| 970 KlassHandle resolved_klass, | |
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971 Symbol* name, |
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972 Symbol* signature, |
| 0 | 973 KlassHandle current_klass) { |
| 974 EXCEPTION_MARK; | |
| 975 CallInfo info; | |
| 976 resolve_interface_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
| 977 if (HAS_PENDING_EXCEPTION) { | |
| 978 CLEAR_PENDING_EXCEPTION; | |
| 979 return methodHandle(); | |
| 980 } | |
| 981 return info.selected_method(); | |
| 982 } | |
| 983 | |
| 984 int LinkResolver::resolve_virtual_vtable_index( | |
| 985 KlassHandle receiver_klass, | |
| 986 KlassHandle resolved_klass, | |
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987 Symbol* name, |
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988 Symbol* signature, |
| 0 | 989 KlassHandle current_klass) { |
| 990 EXCEPTION_MARK; | |
| 991 CallInfo info; | |
| 992 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
| 993 if (HAS_PENDING_EXCEPTION) { | |
| 994 CLEAR_PENDING_EXCEPTION; | |
| 995 return methodOopDesc::invalid_vtable_index; | |
| 996 } | |
| 997 return info.vtable_index(); | |
| 998 } | |
| 999 | |
| 1000 methodHandle LinkResolver::resolve_static_call_or_null( | |
| 1001 KlassHandle resolved_klass, | |
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1002 Symbol* name, |
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1003 Symbol* signature, |
| 0 | 1004 KlassHandle current_klass) { |
| 1005 EXCEPTION_MARK; | |
| 1006 CallInfo info; | |
| 1007 resolve_static_call(info, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
| 1008 if (HAS_PENDING_EXCEPTION) { | |
| 1009 CLEAR_PENDING_EXCEPTION; | |
| 1010 return methodHandle(); | |
| 1011 } | |
| 1012 return info.selected_method(); | |
| 1013 } | |
| 1014 | |
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1015 methodHandle LinkResolver::resolve_special_call_or_null(KlassHandle resolved_klass, Symbol* name, Symbol* signature, |
| 0 | 1016 KlassHandle current_klass) { |
| 1017 EXCEPTION_MARK; | |
| 1018 CallInfo info; | |
| 1019 resolve_special_call(info, resolved_klass, name, signature, current_klass, true, THREAD); | |
| 1020 if (HAS_PENDING_EXCEPTION) { | |
| 1021 CLEAR_PENDING_EXCEPTION; | |
| 1022 return methodHandle(); | |
| 1023 } | |
| 1024 return info.selected_method(); | |
| 1025 } | |
| 1026 | |
| 1027 | |
| 1028 | |
| 1029 //------------------------------------------------------------------------------------------------------------------------ | |
| 1030 // ConstantPool entries | |
| 1031 | |
| 1032 void LinkResolver::resolve_invoke(CallInfo& result, Handle recv, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS) { | |
| 1033 switch (byte) { | |
| 1034 case Bytecodes::_invokestatic : resolve_invokestatic (result, pool, index, CHECK); break; | |
| 1035 case Bytecodes::_invokespecial : resolve_invokespecial (result, pool, index, CHECK); break; | |
| 1036 case Bytecodes::_invokevirtual : resolve_invokevirtual (result, recv, pool, index, CHECK); break; | |
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1037 case Bytecodes::_invokedynamic : resolve_invokedynamic (result, pool, index, CHECK); break; |
| 0 | 1038 case Bytecodes::_invokeinterface: resolve_invokeinterface(result, recv, pool, index, CHECK); break; |
| 1039 } | |
| 1040 return; | |
| 1041 } | |
| 1042 | |
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1043 void LinkResolver::resolve_pool(KlassHandle& resolved_klass, Symbol*& method_name, Symbol*& method_signature, |
| 0 | 1044 KlassHandle& current_klass, constantPoolHandle pool, int index, TRAPS) { |
| 1045 // resolve klass | |
| 1046 resolve_klass(resolved_klass, pool, index, CHECK); | |
| 1047 | |
| 1048 // Get name, signature, and static klass | |
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1049 method_name = pool->name_ref_at(index); |
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1050 method_signature = pool->signature_ref_at(index); |
| 0 | 1051 current_klass = KlassHandle(THREAD, pool->pool_holder()); |
| 1052 } | |
| 1053 | |
| 1054 | |
| 1055 void LinkResolver::resolve_invokestatic(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { | |
| 1056 KlassHandle resolved_klass; | |
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1057 Symbol* method_name = NULL; |
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1058 Symbol* method_signature = NULL; |
| 0 | 1059 KlassHandle current_klass; |
| 1060 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
| 1061 resolve_static_call(result, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); | |
| 1062 } | |
| 1063 | |
| 1064 | |
| 1065 void LinkResolver::resolve_invokespecial(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { | |
| 1066 KlassHandle resolved_klass; | |
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1067 Symbol* method_name = NULL; |
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1068 Symbol* method_signature = NULL; |
| 0 | 1069 KlassHandle current_klass; |
| 1070 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
| 1071 resolve_special_call(result, resolved_klass, method_name, method_signature, current_klass, true, CHECK); | |
| 1072 } | |
| 1073 | |
| 1074 | |
| 1075 void LinkResolver::resolve_invokevirtual(CallInfo& result, Handle recv, | |
| 1076 constantPoolHandle pool, int index, | |
| 1077 TRAPS) { | |
| 1078 | |
| 1079 KlassHandle resolved_klass; | |
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1080 Symbol* method_name = NULL; |
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1081 Symbol* method_signature = NULL; |
| 0 | 1082 KlassHandle current_klass; |
| 1083 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
| 1084 KlassHandle recvrKlass (THREAD, recv.is_null() ? (klassOop)NULL : recv->klass()); | |
| 1085 resolve_virtual_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); | |
| 1086 } | |
| 1087 | |
| 1088 | |
| 1089 void LinkResolver::resolve_invokeinterface(CallInfo& result, Handle recv, constantPoolHandle pool, int index, TRAPS) { | |
| 1090 KlassHandle resolved_klass; | |
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1091 Symbol* method_name = NULL; |
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1092 Symbol* method_signature = NULL; |
| 0 | 1093 KlassHandle current_klass; |
| 1094 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
| 1095 KlassHandle recvrKlass (THREAD, recv.is_null() ? (klassOop)NULL : recv->klass()); | |
| 1096 resolve_interface_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); | |
| 1097 } | |
| 1098 | |
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1099 |
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1100 void LinkResolver::resolve_invokedynamic(CallInfo& result, constantPoolHandle pool, int raw_index, TRAPS) { |
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1101 assert(EnableInvokeDynamic, ""); |
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1102 |
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1103 // This guy is reached from InterpreterRuntime::resolve_invokedynamic. |
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1104 |
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1105 // At this point, we only need the signature, and can ignore the name. |
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1106 Symbol* method_signature = pool->signature_ref_at(raw_index); // raw_index works directly |
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1107 Symbol* method_name = vmSymbols::invokeExact_name(); |
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1108 KlassHandle resolved_klass = SystemDictionaryHandles::MethodHandle_klass(); |
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1109 |
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1110 // JSR 292: this must be an implicitly generated method MethodHandle.invokeExact(*...) |
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1111 // The extra MH receiver will be inserted into the stack on every call. |
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1112 methodHandle resolved_method; |
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1113 KlassHandle current_klass(THREAD, pool->pool_holder()); |
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1114 lookup_implicit_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, CHECK); |
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1115 if (resolved_method.is_null()) { |
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1116 THROW(vmSymbols::java_lang_InternalError()); |
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1117 } |
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1118 result.set_dynamic(resolved_method, CHECK); |
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1119 } |
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1120 |
| 0 | 1121 //------------------------------------------------------------------------------------------------------------------------ |
| 1122 #ifndef PRODUCT | |
| 1123 | |
| 1124 void FieldAccessInfo::print() { | |
| 1125 ResourceMark rm; | |
| 1126 tty->print_cr("Field %s@%d", name()->as_C_string(), field_offset()); | |
| 1127 } | |
| 1128 | |
| 1129 #endif |