Mon, 12 Nov 2012 16:15:05 -0500
8001471: Klass::cast() does nothing
Summary: Remove function Klass::cast() and calls to it.
Reviewed-by: dholmes, coleenp
duke@435 | 1 | /* |
coleenp@4037 | 2 | * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
trims@1907 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
trims@1907 | 20 | * or visit www.oracle.com if you need additional information or have any |
trims@1907 | 21 | * questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
stefank@2314 | 25 | #include "precompiled.hpp" |
kamg@4245 | 26 | #include "classfile/defaultMethods.hpp" |
stefank@2314 | 27 | #include "classfile/systemDictionary.hpp" |
stefank@2314 | 28 | #include "classfile/vmSymbols.hpp" |
stefank@2314 | 29 | #include "compiler/compileBroker.hpp" |
stefank@2314 | 30 | #include "gc_interface/collectedHeap.inline.hpp" |
stefank@2314 | 31 | #include "interpreter/bytecode.hpp" |
stefank@2314 | 32 | #include "interpreter/interpreterRuntime.hpp" |
stefank@2314 | 33 | #include "interpreter/linkResolver.hpp" |
stefank@2314 | 34 | #include "memory/resourceArea.hpp" |
stefank@2314 | 35 | #include "memory/universe.inline.hpp" |
stefank@2314 | 36 | #include "oops/instanceKlass.hpp" |
stefank@2314 | 37 | #include "oops/objArrayOop.hpp" |
stefank@2314 | 38 | #include "prims/methodHandles.hpp" |
stefank@2314 | 39 | #include "prims/nativeLookup.hpp" |
stefank@2314 | 40 | #include "runtime/compilationPolicy.hpp" |
stefank@2314 | 41 | #include "runtime/fieldDescriptor.hpp" |
stefank@2314 | 42 | #include "runtime/frame.inline.hpp" |
stefank@2314 | 43 | #include "runtime/handles.inline.hpp" |
stefank@2314 | 44 | #include "runtime/reflection.hpp" |
stefank@2314 | 45 | #include "runtime/signature.hpp" |
stefank@2314 | 46 | #include "runtime/vmThread.hpp" |
stefank@2314 | 47 | #ifdef TARGET_OS_FAMILY_linux |
stefank@2314 | 48 | # include "thread_linux.inline.hpp" |
stefank@2314 | 49 | #endif |
stefank@2314 | 50 | #ifdef TARGET_OS_FAMILY_solaris |
stefank@2314 | 51 | # include "thread_solaris.inline.hpp" |
stefank@2314 | 52 | #endif |
stefank@2314 | 53 | #ifdef TARGET_OS_FAMILY_windows |
stefank@2314 | 54 | # include "thread_windows.inline.hpp" |
stefank@2314 | 55 | #endif |
never@3156 | 56 | #ifdef TARGET_OS_FAMILY_bsd |
never@3156 | 57 | # include "thread_bsd.inline.hpp" |
never@3156 | 58 | #endif |
duke@435 | 59 | |
duke@435 | 60 | //------------------------------------------------------------------------------------------------------------------------ |
duke@435 | 61 | // Implementation of FieldAccessInfo |
duke@435 | 62 | |
coleenp@2497 | 63 | void FieldAccessInfo::set(KlassHandle klass, Symbol* name, int field_index, int field_offset, |
duke@435 | 64 | BasicType field_type, AccessFlags access_flags) { |
duke@435 | 65 | _klass = klass; |
duke@435 | 66 | _name = name; |
duke@435 | 67 | _field_index = field_index; |
duke@435 | 68 | _field_offset = field_offset; |
duke@435 | 69 | _field_type = field_type; |
duke@435 | 70 | _access_flags = access_flags; |
duke@435 | 71 | } |
duke@435 | 72 | |
duke@435 | 73 | |
duke@435 | 74 | //------------------------------------------------------------------------------------------------------------------------ |
duke@435 | 75 | // Implementation of CallInfo |
duke@435 | 76 | |
duke@435 | 77 | |
duke@435 | 78 | void CallInfo::set_static(KlassHandle resolved_klass, methodHandle resolved_method, TRAPS) { |
coleenp@4037 | 79 | int vtable_index = Method::nonvirtual_vtable_index; |
duke@435 | 80 | set_common(resolved_klass, resolved_klass, resolved_method, resolved_method, vtable_index, CHECK); |
duke@435 | 81 | } |
duke@435 | 82 | |
duke@435 | 83 | |
duke@435 | 84 | void CallInfo::set_interface(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, TRAPS) { |
duke@435 | 85 | // This is only called for interface methods. If the resolved_method |
duke@435 | 86 | // comes from java/lang/Object, it can be the subject of a virtual call, so |
duke@435 | 87 | // we should pick the vtable index from the resolved method. |
duke@435 | 88 | // Other than that case, there is no valid vtable index to specify. |
coleenp@4037 | 89 | int vtable_index = Method::invalid_vtable_index; |
never@1577 | 90 | if (resolved_method->method_holder() == SystemDictionary::Object_klass()) { |
duke@435 | 91 | assert(resolved_method->vtable_index() == selected_method->vtable_index(), "sanity check"); |
duke@435 | 92 | vtable_index = resolved_method->vtable_index(); |
duke@435 | 93 | } |
duke@435 | 94 | set_common(resolved_klass, selected_klass, resolved_method, selected_method, vtable_index, CHECK); |
duke@435 | 95 | } |
duke@435 | 96 | |
duke@435 | 97 | void CallInfo::set_virtual(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index, TRAPS) { |
coleenp@4037 | 98 | assert(vtable_index >= 0 || vtable_index == Method::nonvirtual_vtable_index, "valid index"); |
duke@435 | 99 | set_common(resolved_klass, selected_klass, resolved_method, selected_method, vtable_index, CHECK); |
twisti@3969 | 100 | assert(!resolved_method->is_compiled_lambda_form(), "these must be handled via an invokehandle call"); |
duke@435 | 101 | } |
duke@435 | 102 | |
twisti@4133 | 103 | void CallInfo::set_handle(methodHandle resolved_method, Handle resolved_appendix, Handle resolved_method_type, TRAPS) { |
twisti@3969 | 104 | if (resolved_method.is_null()) { |
twisti@3969 | 105 | THROW_MSG(vmSymbols::java_lang_InternalError(), "resolved method is null"); |
twisti@3969 | 106 | } |
coleenp@4037 | 107 | KlassHandle resolved_klass = SystemDictionary::MethodHandle_klass(); |
twisti@3969 | 108 | assert(resolved_method->intrinsic_id() == vmIntrinsics::_invokeBasic || |
twisti@3969 | 109 | resolved_method->is_compiled_lambda_form(), |
twisti@3969 | 110 | "linkMethod must return one of these"); |
coleenp@4037 | 111 | int vtable_index = Method::nonvirtual_vtable_index; |
jrose@2015 | 112 | assert(resolved_method->vtable_index() == vtable_index, ""); |
twisti@3969 | 113 | set_common(resolved_klass, resolved_klass, resolved_method, resolved_method, vtable_index, CHECK); |
twisti@4133 | 114 | _resolved_appendix = resolved_appendix; |
twisti@4133 | 115 | _resolved_method_type = resolved_method_type; |
jrose@2015 | 116 | } |
jrose@2015 | 117 | |
duke@435 | 118 | void CallInfo::set_common(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index, TRAPS) { |
duke@435 | 119 | assert(resolved_method->signature() == selected_method->signature(), "signatures must correspond"); |
duke@435 | 120 | _resolved_klass = resolved_klass; |
duke@435 | 121 | _selected_klass = selected_klass; |
duke@435 | 122 | _resolved_method = resolved_method; |
duke@435 | 123 | _selected_method = selected_method; |
duke@435 | 124 | _vtable_index = vtable_index; |
twisti@3969 | 125 | _resolved_appendix = Handle(); |
iveresov@2138 | 126 | if (CompilationPolicy::must_be_compiled(selected_method)) { |
twisti@1570 | 127 | // This path is unusual, mostly used by the '-Xcomp' stress test mode. |
twisti@1570 | 128 | |
iveresov@2138 | 129 | // Note: with several active threads, the must_be_compiled may be true |
iveresov@2138 | 130 | // while can_be_compiled is false; remove assert |
iveresov@2138 | 131 | // assert(CompilationPolicy::can_be_compiled(selected_method), "cannot compile"); |
duke@435 | 132 | if (THREAD->is_Compiler_thread()) { |
duke@435 | 133 | // don't force compilation, resolve was on behalf of compiler |
duke@435 | 134 | return; |
duke@435 | 135 | } |
coleenp@4251 | 136 | if (selected_method->method_holder()->is_not_initialized()) { |
twisti@1570 | 137 | // 'is_not_initialized' means not only '!is_initialized', but also that |
twisti@1570 | 138 | // initialization has not been started yet ('!being_initialized') |
twisti@1570 | 139 | // Do not force compilation of methods in uninitialized classes. |
twisti@1570 | 140 | // Note that doing this would throw an assert later, |
twisti@1570 | 141 | // in CompileBroker::compile_method. |
twisti@1570 | 142 | // We sometimes use the link resolver to do reflective lookups |
twisti@1570 | 143 | // even before classes are initialized. |
twisti@1570 | 144 | return; |
twisti@1570 | 145 | } |
duke@435 | 146 | CompileBroker::compile_method(selected_method, InvocationEntryBci, |
iveresov@3035 | 147 | CompilationPolicy::policy()->initial_compile_level(), |
iveresov@2138 | 148 | methodHandle(), 0, "must_be_compiled", CHECK); |
duke@435 | 149 | } |
duke@435 | 150 | } |
duke@435 | 151 | |
duke@435 | 152 | |
duke@435 | 153 | //------------------------------------------------------------------------------------------------------------------------ |
duke@435 | 154 | // Klass resolution |
duke@435 | 155 | |
duke@435 | 156 | void LinkResolver::check_klass_accessability(KlassHandle ref_klass, KlassHandle sel_klass, TRAPS) { |
coleenp@4037 | 157 | if (!Reflection::verify_class_access(ref_klass(), |
coleenp@4037 | 158 | sel_klass(), |
duke@435 | 159 | true)) { |
duke@435 | 160 | ResourceMark rm(THREAD); |
duke@435 | 161 | Exceptions::fthrow( |
duke@435 | 162 | THREAD_AND_LOCATION, |
coleenp@2497 | 163 | vmSymbols::java_lang_IllegalAccessError(), |
duke@435 | 164 | "tried to access class %s from class %s", |
duke@435 | 165 | sel_klass->external_name(), |
duke@435 | 166 | ref_klass->external_name() |
duke@435 | 167 | ); |
duke@435 | 168 | return; |
duke@435 | 169 | } |
duke@435 | 170 | } |
duke@435 | 171 | |
duke@435 | 172 | void LinkResolver::resolve_klass(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) { |
coleenp@4037 | 173 | Klass* result_oop = pool->klass_ref_at(index, CHECK); |
duke@435 | 174 | result = KlassHandle(THREAD, result_oop); |
duke@435 | 175 | } |
duke@435 | 176 | |
duke@435 | 177 | void LinkResolver::resolve_klass_no_update(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) { |
coleenp@4037 | 178 | Klass* result_oop = |
coleenp@4037 | 179 | ConstantPool::klass_ref_at_if_loaded_check(pool, index, CHECK); |
duke@435 | 180 | result = KlassHandle(THREAD, result_oop); |
duke@435 | 181 | } |
duke@435 | 182 | |
duke@435 | 183 | |
duke@435 | 184 | //------------------------------------------------------------------------------------------------------------------------ |
duke@435 | 185 | // Method resolution |
duke@435 | 186 | // |
duke@435 | 187 | // According to JVM spec. $5.4.3c & $5.4.3d |
duke@435 | 188 | |
coleenp@2497 | 189 | void LinkResolver::lookup_method_in_klasses(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
coleenp@4037 | 190 | Method* result_oop = klass->uncached_lookup_method(name, signature); |
twisti@2698 | 191 | if (EnableInvokeDynamic && result_oop != NULL) { |
twisti@3969 | 192 | vmIntrinsics::ID iid = result_oop->intrinsic_id(); |
twisti@3969 | 193 | if (MethodHandles::is_signature_polymorphic(iid)) { |
twisti@3969 | 194 | // Do not link directly to these. The VM must produce a synthetic one using lookup_polymorphic_method. |
jrose@1862 | 195 | return; |
jrose@1862 | 196 | } |
jrose@1862 | 197 | } |
duke@435 | 198 | result = methodHandle(THREAD, result_oop); |
duke@435 | 199 | } |
duke@435 | 200 | |
duke@435 | 201 | // returns first instance method |
coleenp@2497 | 202 | void LinkResolver::lookup_instance_method_in_klasses(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
coleenp@4037 | 203 | Method* result_oop = klass->uncached_lookup_method(name, signature); |
duke@435 | 204 | result = methodHandle(THREAD, result_oop); |
duke@435 | 205 | while (!result.is_null() && result->is_static()) { |
hseigel@4278 | 206 | klass = KlassHandle(THREAD, result->method_holder()->super()); |
coleenp@2497 | 207 | result = methodHandle(THREAD, klass->uncached_lookup_method(name, signature)); |
duke@435 | 208 | } |
duke@435 | 209 | } |
duke@435 | 210 | |
duke@435 | 211 | |
coleenp@2497 | 212 | int LinkResolver::vtable_index_of_miranda_method(KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
duke@435 | 213 | ResourceMark rm(THREAD); |
coleenp@4037 | 214 | klassVtable *vt = InstanceKlass::cast(klass())->vtable(); |
coleenp@2497 | 215 | return vt->index_of_miranda(name, signature); |
duke@435 | 216 | } |
duke@435 | 217 | |
coleenp@2497 | 218 | void LinkResolver::lookup_method_in_interfaces(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
coleenp@4037 | 219 | InstanceKlass *ik = InstanceKlass::cast(klass()); |
coleenp@2497 | 220 | result = methodHandle(THREAD, ik->lookup_method_in_all_interfaces(name, signature)); |
duke@435 | 221 | } |
duke@435 | 222 | |
twisti@3969 | 223 | void LinkResolver::lookup_polymorphic_method(methodHandle& result, |
twisti@3969 | 224 | KlassHandle klass, Symbol* name, Symbol* full_signature, |
twisti@3969 | 225 | KlassHandle current_klass, |
twisti@4133 | 226 | Handle *appendix_result_or_null, |
twisti@4133 | 227 | Handle *method_type_result, |
twisti@3969 | 228 | TRAPS) { |
twisti@3969 | 229 | vmIntrinsics::ID iid = MethodHandles::signature_polymorphic_name_id(name); |
twisti@3969 | 230 | if (TraceMethodHandles) { |
twisti@3969 | 231 | tty->print_cr("lookup_polymorphic_method iid=%s %s.%s%s", |
twisti@3969 | 232 | vmIntrinsics::name_at(iid), klass->external_name(), |
twisti@3969 | 233 | name->as_C_string(), full_signature->as_C_string()); |
twisti@3969 | 234 | } |
twisti@2698 | 235 | if (EnableInvokeDynamic && |
jrose@1862 | 236 | klass() == SystemDictionary::MethodHandle_klass() && |
twisti@3969 | 237 | iid != vmIntrinsics::_none) { |
twisti@3969 | 238 | if (MethodHandles::is_signature_polymorphic_intrinsic(iid)) { |
twisti@3969 | 239 | // Most of these do not need an up-call to Java to resolve, so can be done anywhere. |
twisti@3969 | 240 | // Do not erase last argument type (MemberName) if it is a static linkTo method. |
twisti@3969 | 241 | bool keep_last_arg = MethodHandles::is_signature_polymorphic_static(iid); |
twisti@3969 | 242 | TempNewSymbol basic_signature = |
twisti@3969 | 243 | MethodHandles::lookup_basic_type_signature(full_signature, keep_last_arg, CHECK); |
twisti@3969 | 244 | if (TraceMethodHandles) { |
twisti@3969 | 245 | tty->print_cr("lookup_polymorphic_method %s %s => basic %s", |
twisti@3969 | 246 | name->as_C_string(), |
twisti@3969 | 247 | full_signature->as_C_string(), |
twisti@3969 | 248 | basic_signature->as_C_string()); |
jrose@2015 | 249 | } |
twisti@3969 | 250 | result = SystemDictionary::find_method_handle_intrinsic(iid, |
twisti@3969 | 251 | basic_signature, |
twisti@3969 | 252 | CHECK); |
twisti@3969 | 253 | if (result.not_null()) { |
twisti@3969 | 254 | assert(result->is_method_handle_intrinsic(), "MH.invokeBasic or MH.linkTo* intrinsic"); |
twisti@3969 | 255 | assert(result->intrinsic_id() != vmIntrinsics::_invokeGeneric, "wrong place to find this"); |
twisti@3969 | 256 | assert(basic_signature == result->signature(), "predict the result signature"); |
twisti@3969 | 257 | if (TraceMethodHandles) { |
twisti@3969 | 258 | tty->print("lookup_polymorphic_method => intrinsic "); |
twisti@3969 | 259 | result->print_on(tty); |
twisti@3969 | 260 | } |
twisti@3969 | 261 | return; |
twisti@3969 | 262 | } |
twisti@3969 | 263 | } else if (iid == vmIntrinsics::_invokeGeneric |
twisti@3969 | 264 | && !THREAD->is_Compiler_thread() |
twisti@3969 | 265 | && appendix_result_or_null != NULL) { |
twisti@3969 | 266 | // This is a method with type-checking semantics. |
twisti@3969 | 267 | // We will ask Java code to spin an adapter method for it. |
twisti@3969 | 268 | if (!MethodHandles::enabled()) { |
twisti@3969 | 269 | // Make sure the Java part of the runtime has been booted up. |
coleenp@4037 | 270 | Klass* natives = SystemDictionary::MethodHandleNatives_klass(); |
coleenp@4037 | 271 | if (natives == NULL || InstanceKlass::cast(natives)->is_not_initialized()) { |
twisti@3969 | 272 | SystemDictionary::resolve_or_fail(vmSymbols::java_lang_invoke_MethodHandleNatives(), |
twisti@3969 | 273 | Handle(), |
twisti@3969 | 274 | Handle(), |
twisti@3969 | 275 | true, |
twisti@3969 | 276 | CHECK); |
twisti@3969 | 277 | } |
twisti@3969 | 278 | } |
twisti@3969 | 279 | |
twisti@3969 | 280 | Handle appendix; |
twisti@4133 | 281 | Handle method_type; |
twisti@3969 | 282 | result = SystemDictionary::find_method_handle_invoker(name, |
twisti@3969 | 283 | full_signature, |
twisti@3969 | 284 | current_klass, |
twisti@3969 | 285 | &appendix, |
twisti@4133 | 286 | &method_type, |
twisti@3969 | 287 | CHECK); |
twisti@3969 | 288 | if (TraceMethodHandles) { |
twisti@3969 | 289 | tty->print("lookup_polymorphic_method => (via Java) "); |
twisti@3969 | 290 | result->print_on(tty); |
twisti@3969 | 291 | tty->print(" lookup_polymorphic_method => appendix = "); |
twisti@3969 | 292 | if (appendix.is_null()) tty->print_cr("(none)"); |
twisti@3969 | 293 | else appendix->print_on(tty); |
twisti@3969 | 294 | } |
twisti@3969 | 295 | if (result.not_null()) { |
twisti@3969 | 296 | #ifdef ASSERT |
twisti@3969 | 297 | TempNewSymbol basic_signature = |
twisti@3969 | 298 | MethodHandles::lookup_basic_type_signature(full_signature, CHECK); |
twisti@3969 | 299 | int actual_size_of_params = result->size_of_parameters(); |
twisti@3969 | 300 | int expected_size_of_params = ArgumentSizeComputer(basic_signature).size(); |
twisti@3969 | 301 | // +1 for MethodHandle.this, +1 for trailing MethodType |
twisti@3969 | 302 | if (!MethodHandles::is_signature_polymorphic_static(iid)) expected_size_of_params += 1; |
twisti@3969 | 303 | if (appendix.not_null()) expected_size_of_params += 1; |
twisti@3969 | 304 | if (actual_size_of_params != expected_size_of_params) { |
twisti@3969 | 305 | tty->print_cr("*** basic_signature=%s", basic_signature->as_C_string()); |
twisti@3969 | 306 | tty->print_cr("*** result for %s: ", vmIntrinsics::name_at(iid)); |
twisti@3969 | 307 | result->print(); |
twisti@3969 | 308 | } |
twisti@3969 | 309 | assert(actual_size_of_params == expected_size_of_params, |
twisti@3969 | 310 | err_msg("%d != %d", actual_size_of_params, expected_size_of_params)); |
twisti@3969 | 311 | #endif //ASSERT |
twisti@3969 | 312 | |
twisti@3969 | 313 | assert(appendix_result_or_null != NULL, ""); |
twisti@3969 | 314 | (*appendix_result_or_null) = appendix; |
twisti@4133 | 315 | (*method_type_result) = method_type; |
twisti@3969 | 316 | return; |
twisti@3969 | 317 | } |
jrose@1145 | 318 | } |
jrose@1145 | 319 | } |
jrose@1145 | 320 | } |
jrose@1145 | 321 | |
duke@435 | 322 | void LinkResolver::check_method_accessability(KlassHandle ref_klass, |
duke@435 | 323 | KlassHandle resolved_klass, |
duke@435 | 324 | KlassHandle sel_klass, |
duke@435 | 325 | methodHandle sel_method, |
duke@435 | 326 | TRAPS) { |
duke@435 | 327 | |
duke@435 | 328 | AccessFlags flags = sel_method->access_flags(); |
duke@435 | 329 | |
duke@435 | 330 | // Special case: arrays always override "clone". JVMS 2.15. |
duke@435 | 331 | // If the resolved klass is an array class, and the declaring class |
duke@435 | 332 | // is java.lang.Object and the method is "clone", set the flags |
duke@435 | 333 | // to public. |
duke@435 | 334 | // |
duke@435 | 335 | // We'll check for the method name first, as that's most likely |
duke@435 | 336 | // to be false (so we'll short-circuit out of these tests). |
duke@435 | 337 | if (sel_method->name() == vmSymbols::clone_name() && |
never@1577 | 338 | sel_klass() == SystemDictionary::Object_klass() && |
duke@435 | 339 | resolved_klass->oop_is_array()) { |
duke@435 | 340 | // We need to change "protected" to "public". |
duke@435 | 341 | assert(flags.is_protected(), "clone not protected?"); |
duke@435 | 342 | jint new_flags = flags.as_int(); |
duke@435 | 343 | new_flags = new_flags & (~JVM_ACC_PROTECTED); |
duke@435 | 344 | new_flags = new_flags | JVM_ACC_PUBLIC; |
duke@435 | 345 | flags.set_flags(new_flags); |
duke@435 | 346 | } |
twisti@3969 | 347 | // assert(extra_arg_result_or_null != NULL, "must be able to return extra argument"); |
duke@435 | 348 | |
coleenp@4037 | 349 | if (!Reflection::verify_field_access(ref_klass(), |
coleenp@4037 | 350 | resolved_klass(), |
coleenp@4037 | 351 | sel_klass(), |
duke@435 | 352 | flags, |
duke@435 | 353 | true)) { |
duke@435 | 354 | ResourceMark rm(THREAD); |
duke@435 | 355 | Exceptions::fthrow( |
duke@435 | 356 | THREAD_AND_LOCATION, |
coleenp@2497 | 357 | vmSymbols::java_lang_IllegalAccessError(), |
duke@435 | 358 | "tried to access method %s.%s%s from class %s", |
duke@435 | 359 | sel_klass->external_name(), |
duke@435 | 360 | sel_method->name()->as_C_string(), |
duke@435 | 361 | sel_method->signature()->as_C_string(), |
duke@435 | 362 | ref_klass->external_name() |
duke@435 | 363 | ); |
duke@435 | 364 | return; |
duke@435 | 365 | } |
duke@435 | 366 | } |
duke@435 | 367 | |
twisti@3969 | 368 | void LinkResolver::resolve_method_statically(methodHandle& resolved_method, KlassHandle& resolved_klass, |
twisti@3969 | 369 | Bytecodes::Code code, constantPoolHandle pool, int index, TRAPS) { |
duke@435 | 370 | |
duke@435 | 371 | // resolve klass |
twisti@3969 | 372 | if (code == Bytecodes::_invokedynamic) { |
coleenp@4037 | 373 | resolved_klass = SystemDictionary::MethodHandle_klass(); |
twisti@3969 | 374 | Symbol* method_name = vmSymbols::invoke_name(); |
twisti@3969 | 375 | Symbol* method_signature = pool->signature_ref_at(index); |
twisti@3969 | 376 | KlassHandle current_klass(THREAD, pool->pool_holder()); |
twisti@3969 | 377 | resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); |
twisti@3969 | 378 | return; |
twisti@3969 | 379 | } |
twisti@3969 | 380 | |
duke@435 | 381 | resolve_klass(resolved_klass, pool, index, CHECK); |
duke@435 | 382 | |
coleenp@2497 | 383 | Symbol* method_name = pool->name_ref_at(index); |
coleenp@2497 | 384 | Symbol* method_signature = pool->signature_ref_at(index); |
duke@435 | 385 | KlassHandle current_klass(THREAD, pool->pool_holder()); |
duke@435 | 386 | |
jrose@2982 | 387 | if (pool->has_preresolution() |
jrose@2982 | 388 | || (resolved_klass() == SystemDictionary::MethodHandle_klass() && |
twisti@3969 | 389 | MethodHandles::is_signature_polymorphic_name(resolved_klass(), method_name))) { |
coleenp@4037 | 390 | Method* result_oop = ConstantPool::method_at_if_loaded(pool, index); |
jrose@2982 | 391 | if (result_oop != NULL) { |
jrose@2982 | 392 | resolved_method = methodHandle(THREAD, result_oop); |
jrose@2982 | 393 | return; |
jrose@2982 | 394 | } |
jrose@2982 | 395 | } |
jrose@2982 | 396 | |
twisti@3969 | 397 | if (code == Bytecodes::_invokeinterface) { |
twisti@3969 | 398 | resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); |
twisti@3969 | 399 | } else { |
twisti@3969 | 400 | resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); |
twisti@3969 | 401 | } |
duke@435 | 402 | } |
duke@435 | 403 | |
duke@435 | 404 | void LinkResolver::resolve_method(methodHandle& resolved_method, KlassHandle resolved_klass, |
coleenp@2497 | 405 | Symbol* method_name, Symbol* method_signature, |
duke@435 | 406 | KlassHandle current_klass, bool check_access, TRAPS) { |
duke@435 | 407 | |
twisti@3969 | 408 | Handle nested_exception; |
twisti@3969 | 409 | |
kamg@4245 | 410 | // 1. lookup method in resolved klass and its super klasses |
duke@435 | 411 | lookup_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK); |
duke@435 | 412 | |
duke@435 | 413 | if (resolved_method.is_null()) { // not found in the class hierarchy |
kamg@4245 | 414 | // 2. lookup method in all the interfaces implemented by the resolved klass |
duke@435 | 415 | lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); |
duke@435 | 416 | |
duke@435 | 417 | if (resolved_method.is_null()) { |
twisti@3969 | 418 | // JSR 292: see if this is an implicitly generated method MethodHandle.linkToVirtual(*...), etc |
twisti@3969 | 419 | lookup_polymorphic_method(resolved_method, resolved_klass, method_name, method_signature, |
twisti@4133 | 420 | current_klass, (Handle*)NULL, (Handle*)NULL, THREAD); |
twisti@3969 | 421 | if (HAS_PENDING_EXCEPTION) { |
twisti@3969 | 422 | nested_exception = Handle(THREAD, PENDING_EXCEPTION); |
twisti@3969 | 423 | CLEAR_PENDING_EXCEPTION; |
twisti@3969 | 424 | } |
jrose@1145 | 425 | } |
jrose@1145 | 426 | |
jrose@1145 | 427 | if (resolved_method.is_null()) { |
kamg@4245 | 428 | // 3. method lookup failed |
duke@435 | 429 | ResourceMark rm(THREAD); |
twisti@3969 | 430 | THROW_MSG_CAUSE(vmSymbols::java_lang_NoSuchMethodError(), |
hseigel@4278 | 431 | Method::name_and_sig_as_C_string(resolved_klass(), |
twisti@3969 | 432 | method_name, |
twisti@3969 | 433 | method_signature), |
twisti@3969 | 434 | nested_exception); |
duke@435 | 435 | } |
duke@435 | 436 | } |
duke@435 | 437 | |
kamg@4245 | 438 | // 4. check if klass is not interface |
kamg@4245 | 439 | if (resolved_klass->is_interface() && resolved_method->is_abstract()) { |
kamg@4245 | 440 | ResourceMark rm(THREAD); |
kamg@4245 | 441 | char buf[200]; |
kamg@4245 | 442 | jio_snprintf(buf, sizeof(buf), "Found interface %s, but class was expected", |
kamg@4245 | 443 | resolved_klass()->external_name()); |
kamg@4245 | 444 | THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
kamg@4245 | 445 | } |
kamg@4245 | 446 | |
duke@435 | 447 | // 5. check if method is concrete |
duke@435 | 448 | if (resolved_method->is_abstract() && !resolved_klass->is_abstract()) { |
duke@435 | 449 | ResourceMark rm(THREAD); |
duke@435 | 450 | THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), |
hseigel@4278 | 451 | Method::name_and_sig_as_C_string(resolved_klass(), |
coleenp@2497 | 452 | method_name, |
coleenp@2497 | 453 | method_signature)); |
duke@435 | 454 | } |
duke@435 | 455 | |
duke@435 | 456 | // 6. access checks, access checking may be turned off when calling from within the VM. |
duke@435 | 457 | if (check_access) { |
duke@435 | 458 | assert(current_klass.not_null() , "current_klass should not be null"); |
duke@435 | 459 | |
duke@435 | 460 | // check if method can be accessed by the referring class |
duke@435 | 461 | check_method_accessability(current_klass, |
duke@435 | 462 | resolved_klass, |
duke@435 | 463 | KlassHandle(THREAD, resolved_method->method_holder()), |
duke@435 | 464 | resolved_method, |
duke@435 | 465 | CHECK); |
duke@435 | 466 | |
duke@435 | 467 | // check loader constraints |
coleenp@4037 | 468 | Handle loader (THREAD, InstanceKlass::cast(current_klass())->class_loader()); |
coleenp@4251 | 469 | Handle class_loader (THREAD, resolved_method->method_holder()->class_loader()); |
duke@435 | 470 | { |
duke@435 | 471 | ResourceMark rm(THREAD); |
duke@435 | 472 | char* failed_type_name = |
duke@435 | 473 | SystemDictionary::check_signature_loaders(method_signature, loader, |
duke@435 | 474 | class_loader, true, CHECK); |
duke@435 | 475 | if (failed_type_name != NULL) { |
duke@435 | 476 | const char* msg = "loader constraint violation: when resolving method" |
duke@435 | 477 | " \"%s\" the class loader (instance of %s) of the current class, %s," |
duke@435 | 478 | " and the class loader (instance of %s) for resolved class, %s, have" |
duke@435 | 479 | " different Class objects for the type %s used in the signature"; |
hseigel@4278 | 480 | char* sig = Method::name_and_sig_as_C_string(resolved_klass(),method_name,method_signature); |
duke@435 | 481 | const char* loader1 = SystemDictionary::loader_name(loader()); |
coleenp@4037 | 482 | char* current = InstanceKlass::cast(current_klass())->name()->as_C_string(); |
duke@435 | 483 | const char* loader2 = SystemDictionary::loader_name(class_loader()); |
coleenp@4037 | 484 | char* resolved = InstanceKlass::cast(resolved_klass())->name()->as_C_string(); |
duke@435 | 485 | size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + |
duke@435 | 486 | strlen(current) + strlen(loader2) + strlen(resolved) + |
duke@435 | 487 | strlen(failed_type_name); |
duke@435 | 488 | char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
duke@435 | 489 | jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, |
duke@435 | 490 | resolved, failed_type_name); |
duke@435 | 491 | THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); |
duke@435 | 492 | } |
duke@435 | 493 | } |
duke@435 | 494 | } |
duke@435 | 495 | } |
duke@435 | 496 | |
duke@435 | 497 | void LinkResolver::resolve_interface_method(methodHandle& resolved_method, |
duke@435 | 498 | KlassHandle resolved_klass, |
coleenp@2497 | 499 | Symbol* method_name, |
coleenp@2497 | 500 | Symbol* method_signature, |
duke@435 | 501 | KlassHandle current_klass, |
duke@435 | 502 | bool check_access, TRAPS) { |
duke@435 | 503 | |
duke@435 | 504 | // check if klass is interface |
duke@435 | 505 | if (!resolved_klass->is_interface()) { |
jcoomes@2856 | 506 | ResourceMark rm(THREAD); |
duke@435 | 507 | char buf[200]; |
hseigel@4278 | 508 | jio_snprintf(buf, sizeof(buf), "Found class %s, but interface was expected", resolved_klass()->external_name()); |
duke@435 | 509 | THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
duke@435 | 510 | } |
duke@435 | 511 | |
duke@435 | 512 | // lookup method in this interface or its super, java.lang.Object |
duke@435 | 513 | lookup_instance_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK); |
duke@435 | 514 | |
duke@435 | 515 | if (resolved_method.is_null()) { |
duke@435 | 516 | // lookup method in all the super-interfaces |
duke@435 | 517 | lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); |
duke@435 | 518 | if (resolved_method.is_null()) { |
duke@435 | 519 | // no method found |
duke@435 | 520 | ResourceMark rm(THREAD); |
duke@435 | 521 | THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(), |
hseigel@4278 | 522 | Method::name_and_sig_as_C_string(resolved_klass(), |
coleenp@2497 | 523 | method_name, |
coleenp@2497 | 524 | method_signature)); |
duke@435 | 525 | } |
duke@435 | 526 | } |
duke@435 | 527 | |
duke@435 | 528 | if (check_access) { |
duke@435 | 529 | HandleMark hm(THREAD); |
coleenp@4037 | 530 | Handle loader (THREAD, InstanceKlass::cast(current_klass())->class_loader()); |
coleenp@4251 | 531 | Handle class_loader (THREAD, resolved_method->method_holder()->class_loader()); |
duke@435 | 532 | { |
duke@435 | 533 | ResourceMark rm(THREAD); |
duke@435 | 534 | char* failed_type_name = |
duke@435 | 535 | SystemDictionary::check_signature_loaders(method_signature, loader, |
duke@435 | 536 | class_loader, true, CHECK); |
duke@435 | 537 | if (failed_type_name != NULL) { |
duke@435 | 538 | const char* msg = "loader constraint violation: when resolving " |
duke@435 | 539 | "interface method \"%s\" the class loader (instance of %s) of the " |
duke@435 | 540 | "current class, %s, and the class loader (instance of %s) for " |
duke@435 | 541 | "resolved class, %s, have different Class objects for the type %s " |
duke@435 | 542 | "used in the signature"; |
hseigel@4278 | 543 | char* sig = Method::name_and_sig_as_C_string(resolved_klass(),method_name,method_signature); |
duke@435 | 544 | const char* loader1 = SystemDictionary::loader_name(loader()); |
coleenp@4037 | 545 | char* current = InstanceKlass::cast(current_klass())->name()->as_C_string(); |
duke@435 | 546 | const char* loader2 = SystemDictionary::loader_name(class_loader()); |
coleenp@4037 | 547 | char* resolved = InstanceKlass::cast(resolved_klass())->name()->as_C_string(); |
duke@435 | 548 | size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + |
duke@435 | 549 | strlen(current) + strlen(loader2) + strlen(resolved) + |
duke@435 | 550 | strlen(failed_type_name); |
duke@435 | 551 | char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
duke@435 | 552 | jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, |
duke@435 | 553 | resolved, failed_type_name); |
duke@435 | 554 | THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); |
duke@435 | 555 | } |
duke@435 | 556 | } |
duke@435 | 557 | } |
duke@435 | 558 | } |
duke@435 | 559 | |
duke@435 | 560 | //------------------------------------------------------------------------------------------------------------------------ |
duke@435 | 561 | // Field resolution |
duke@435 | 562 | |
duke@435 | 563 | void LinkResolver::check_field_accessability(KlassHandle ref_klass, |
duke@435 | 564 | KlassHandle resolved_klass, |
duke@435 | 565 | KlassHandle sel_klass, |
duke@435 | 566 | fieldDescriptor& fd, |
duke@435 | 567 | TRAPS) { |
coleenp@4037 | 568 | if (!Reflection::verify_field_access(ref_klass(), |
coleenp@4037 | 569 | resolved_klass(), |
coleenp@4037 | 570 | sel_klass(), |
duke@435 | 571 | fd.access_flags(), |
duke@435 | 572 | true)) { |
duke@435 | 573 | ResourceMark rm(THREAD); |
duke@435 | 574 | Exceptions::fthrow( |
duke@435 | 575 | THREAD_AND_LOCATION, |
coleenp@2497 | 576 | vmSymbols::java_lang_IllegalAccessError(), |
duke@435 | 577 | "tried to access field %s.%s from class %s", |
duke@435 | 578 | sel_klass->external_name(), |
duke@435 | 579 | fd.name()->as_C_string(), |
duke@435 | 580 | ref_klass->external_name() |
duke@435 | 581 | ); |
duke@435 | 582 | return; |
duke@435 | 583 | } |
duke@435 | 584 | } |
duke@435 | 585 | |
duke@435 | 586 | void LinkResolver::resolve_field(FieldAccessInfo& result, constantPoolHandle pool, int index, Bytecodes::Code byte, bool check_only, TRAPS) { |
duke@435 | 587 | resolve_field(result, pool, index, byte, check_only, true, CHECK); |
duke@435 | 588 | } |
duke@435 | 589 | |
duke@435 | 590 | void LinkResolver::resolve_field(FieldAccessInfo& result, constantPoolHandle pool, int index, Bytecodes::Code byte, bool check_only, bool update_pool, TRAPS) { |
duke@435 | 591 | assert(byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic || |
duke@435 | 592 | byte == Bytecodes::_getfield || byte == Bytecodes::_putfield, "bad bytecode"); |
duke@435 | 593 | |
duke@435 | 594 | bool is_static = (byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic); |
duke@435 | 595 | bool is_put = (byte == Bytecodes::_putfield || byte == Bytecodes::_putstatic); |
duke@435 | 596 | |
duke@435 | 597 | // resolve specified klass |
duke@435 | 598 | KlassHandle resolved_klass; |
duke@435 | 599 | if (update_pool) { |
duke@435 | 600 | resolve_klass(resolved_klass, pool, index, CHECK); |
duke@435 | 601 | } else { |
duke@435 | 602 | resolve_klass_no_update(resolved_klass, pool, index, CHECK); |
duke@435 | 603 | } |
duke@435 | 604 | // Load these early in case the resolve of the containing klass fails |
coleenp@2497 | 605 | Symbol* field = pool->name_ref_at(index); |
coleenp@2497 | 606 | Symbol* sig = pool->signature_ref_at(index); |
duke@435 | 607 | // Check if there's a resolved klass containing the field |
duke@435 | 608 | if( resolved_klass.is_null() ) { |
duke@435 | 609 | ResourceMark rm(THREAD); |
duke@435 | 610 | THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); |
duke@435 | 611 | } |
duke@435 | 612 | |
duke@435 | 613 | // Resolve instance field |
duke@435 | 614 | fieldDescriptor fd; // find_field initializes fd if found |
coleenp@4037 | 615 | KlassHandle sel_klass(THREAD, InstanceKlass::cast(resolved_klass())->find_field(field, sig, &fd)); |
duke@435 | 616 | // check if field exists; i.e., if a klass containing the field def has been selected |
duke@435 | 617 | if (sel_klass.is_null()){ |
duke@435 | 618 | ResourceMark rm(THREAD); |
duke@435 | 619 | THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); |
duke@435 | 620 | } |
duke@435 | 621 | |
duke@435 | 622 | // check access |
duke@435 | 623 | KlassHandle ref_klass(THREAD, pool->pool_holder()); |
duke@435 | 624 | check_field_accessability(ref_klass, resolved_klass, sel_klass, fd, CHECK); |
duke@435 | 625 | |
duke@435 | 626 | // check for errors |
duke@435 | 627 | if (is_static != fd.is_static()) { |
jcoomes@2856 | 628 | ResourceMark rm(THREAD); |
duke@435 | 629 | char msg[200]; |
hseigel@4278 | 630 | jio_snprintf(msg, sizeof(msg), "Expected %s field %s.%s", is_static ? "static" : "non-static", resolved_klass()->external_name(), fd.name()->as_C_string()); |
duke@435 | 631 | THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), msg); |
duke@435 | 632 | } |
duke@435 | 633 | |
duke@435 | 634 | // Final fields can only be accessed from its own class. |
duke@435 | 635 | if (is_put && fd.access_flags().is_final() && sel_klass() != pool->pool_holder()) { |
duke@435 | 636 | THROW(vmSymbols::java_lang_IllegalAccessError()); |
duke@435 | 637 | } |
duke@435 | 638 | |
duke@435 | 639 | // initialize resolved_klass if necessary |
duke@435 | 640 | // note 1: the klass which declared the field must be initialized (i.e, sel_klass) |
duke@435 | 641 | // according to the newest JVM spec (5.5, p.170) - was bug (gri 7/28/99) |
duke@435 | 642 | // |
duke@435 | 643 | // note 2: we don't want to force initialization if we are just checking |
duke@435 | 644 | // if the field access is legal; e.g., during compilation |
duke@435 | 645 | if (is_static && !check_only) { |
duke@435 | 646 | sel_klass->initialize(CHECK); |
duke@435 | 647 | } |
duke@435 | 648 | |
duke@435 | 649 | { |
duke@435 | 650 | HandleMark hm(THREAD); |
coleenp@4037 | 651 | Handle ref_loader (THREAD, InstanceKlass::cast(ref_klass())->class_loader()); |
coleenp@4037 | 652 | Handle sel_loader (THREAD, InstanceKlass::cast(sel_klass())->class_loader()); |
coleenp@2497 | 653 | Symbol* signature_ref = pool->signature_ref_at(index); |
duke@435 | 654 | { |
duke@435 | 655 | ResourceMark rm(THREAD); |
duke@435 | 656 | char* failed_type_name = |
duke@435 | 657 | SystemDictionary::check_signature_loaders(signature_ref, |
duke@435 | 658 | ref_loader, sel_loader, |
duke@435 | 659 | false, |
duke@435 | 660 | CHECK); |
duke@435 | 661 | if (failed_type_name != NULL) { |
duke@435 | 662 | const char* msg = "loader constraint violation: when resolving field" |
duke@435 | 663 | " \"%s\" the class loader (instance of %s) of the referring class, " |
duke@435 | 664 | "%s, and the class loader (instance of %s) for the field's resolved " |
duke@435 | 665 | "type, %s, have different Class objects for that type"; |
coleenp@2497 | 666 | char* field_name = field->as_C_string(); |
duke@435 | 667 | const char* loader1 = SystemDictionary::loader_name(ref_loader()); |
coleenp@4037 | 668 | char* sel = InstanceKlass::cast(sel_klass())->name()->as_C_string(); |
duke@435 | 669 | const char* loader2 = SystemDictionary::loader_name(sel_loader()); |
duke@435 | 670 | size_t buflen = strlen(msg) + strlen(field_name) + strlen(loader1) + |
duke@435 | 671 | strlen(sel) + strlen(loader2) + strlen(failed_type_name); |
duke@435 | 672 | char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
duke@435 | 673 | jio_snprintf(buf, buflen, msg, field_name, loader1, sel, loader2, |
duke@435 | 674 | failed_type_name); |
duke@435 | 675 | THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); |
duke@435 | 676 | } |
duke@435 | 677 | } |
duke@435 | 678 | } |
duke@435 | 679 | |
duke@435 | 680 | // return information. note that the klass is set to the actual klass containing the |
duke@435 | 681 | // field, otherwise access of static fields in superclasses will not work. |
duke@435 | 682 | KlassHandle holder (THREAD, fd.field_holder()); |
coleenp@2497 | 683 | Symbol* name = fd.name(); |
duke@435 | 684 | result.set(holder, name, fd.index(), fd.offset(), fd.field_type(), fd.access_flags()); |
duke@435 | 685 | } |
duke@435 | 686 | |
duke@435 | 687 | |
duke@435 | 688 | //------------------------------------------------------------------------------------------------------------------------ |
duke@435 | 689 | // Invoke resolution |
duke@435 | 690 | // |
duke@435 | 691 | // Naming conventions: |
duke@435 | 692 | // |
duke@435 | 693 | // resolved_method the specified method (i.e., static receiver specified via constant pool index) |
duke@435 | 694 | // sel_method the selected method (selected via run-time lookup; e.g., based on dynamic receiver class) |
duke@435 | 695 | // resolved_klass the specified klass (i.e., specified via constant pool index) |
duke@435 | 696 | // recv_klass the receiver klass |
duke@435 | 697 | |
duke@435 | 698 | |
coleenp@2497 | 699 | void LinkResolver::resolve_static_call(CallInfo& result, KlassHandle& resolved_klass, Symbol* method_name, |
coleenp@2497 | 700 | Symbol* method_signature, KlassHandle current_klass, |
duke@435 | 701 | bool check_access, bool initialize_class, TRAPS) { |
duke@435 | 702 | methodHandle resolved_method; |
duke@435 | 703 | linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); |
hseigel@4278 | 704 | resolved_klass = KlassHandle(THREAD, resolved_method->method_holder()); |
duke@435 | 705 | |
duke@435 | 706 | // Initialize klass (this should only happen if everything is ok) |
duke@435 | 707 | if (initialize_class && resolved_klass->should_be_initialized()) { |
duke@435 | 708 | resolved_klass->initialize(CHECK); |
duke@435 | 709 | linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); |
duke@435 | 710 | } |
duke@435 | 711 | |
duke@435 | 712 | // setup result |
duke@435 | 713 | result.set_static(resolved_klass, resolved_method, CHECK); |
duke@435 | 714 | } |
duke@435 | 715 | |
duke@435 | 716 | // throws linktime exceptions |
duke@435 | 717 | void LinkResolver::linktime_resolve_static_method(methodHandle& resolved_method, KlassHandle resolved_klass, |
coleenp@2497 | 718 | Symbol* method_name, Symbol* method_signature, |
duke@435 | 719 | KlassHandle current_klass, bool check_access, TRAPS) { |
duke@435 | 720 | |
duke@435 | 721 | resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); |
duke@435 | 722 | assert(resolved_method->name() != vmSymbols::class_initializer_name(), "should have been checked in verifier"); |
duke@435 | 723 | |
duke@435 | 724 | // check if static |
duke@435 | 725 | if (!resolved_method->is_static()) { |
jcoomes@2856 | 726 | ResourceMark rm(THREAD); |
duke@435 | 727 | char buf[200]; |
hseigel@4278 | 728 | jio_snprintf(buf, sizeof(buf), "Expected static method %s", Method::name_and_sig_as_C_string(resolved_klass(), |
duke@435 | 729 | resolved_method->name(), |
duke@435 | 730 | resolved_method->signature())); |
duke@435 | 731 | THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
duke@435 | 732 | } |
duke@435 | 733 | } |
duke@435 | 734 | |
duke@435 | 735 | |
coleenp@2497 | 736 | void LinkResolver::resolve_special_call(CallInfo& result, KlassHandle resolved_klass, Symbol* method_name, |
coleenp@2497 | 737 | Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS) { |
duke@435 | 738 | methodHandle resolved_method; |
duke@435 | 739 | linktime_resolve_special_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); |
duke@435 | 740 | runtime_resolve_special_method(result, resolved_method, resolved_klass, current_klass, check_access, CHECK); |
duke@435 | 741 | } |
duke@435 | 742 | |
duke@435 | 743 | // throws linktime exceptions |
duke@435 | 744 | void LinkResolver::linktime_resolve_special_method(methodHandle& resolved_method, KlassHandle resolved_klass, |
coleenp@2497 | 745 | Symbol* method_name, Symbol* method_signature, |
duke@435 | 746 | KlassHandle current_klass, bool check_access, TRAPS) { |
duke@435 | 747 | |
kamg@4245 | 748 | if (resolved_klass->is_interface() && current_klass() != NULL) { |
kamg@4245 | 749 | // If the target class is a direct interface, treat this as a "super" |
kamg@4245 | 750 | // default call. |
kamg@4245 | 751 | // |
kamg@4245 | 752 | // If the current method is an overpass that happens to call a direct |
kamg@4245 | 753 | // super-interface's method, then we'll end up rerunning the default method |
kamg@4245 | 754 | // analysis even though we don't need to, but that's ok since it will end |
kamg@4245 | 755 | // up with the same answer. |
kamg@4245 | 756 | InstanceKlass* ik = InstanceKlass::cast(current_klass()); |
kamg@4245 | 757 | Array<Klass*>* interfaces = ik->local_interfaces(); |
kamg@4245 | 758 | int num_interfaces = interfaces->length(); |
kamg@4245 | 759 | for (int index = 0; index < num_interfaces; index++) { |
kamg@4245 | 760 | if (interfaces->at(index) == resolved_klass()) { |
kamg@4245 | 761 | Method* method = DefaultMethods::find_super_default(current_klass(), |
kamg@4245 | 762 | resolved_klass(), method_name, method_signature, CHECK); |
kamg@4245 | 763 | resolved_method = methodHandle(THREAD, method); |
kamg@4245 | 764 | return; |
kamg@4245 | 765 | } |
kamg@4245 | 766 | } |
kamg@4245 | 767 | } |
kamg@4245 | 768 | |
duke@435 | 769 | resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); |
duke@435 | 770 | |
duke@435 | 771 | // check if method name is <init>, that it is found in same klass as static type |
duke@435 | 772 | if (resolved_method->name() == vmSymbols::object_initializer_name() && |
duke@435 | 773 | resolved_method->method_holder() != resolved_klass()) { |
duke@435 | 774 | ResourceMark rm(THREAD); |
duke@435 | 775 | Exceptions::fthrow( |
duke@435 | 776 | THREAD_AND_LOCATION, |
coleenp@2497 | 777 | vmSymbols::java_lang_NoSuchMethodError(), |
duke@435 | 778 | "%s: method %s%s not found", |
duke@435 | 779 | resolved_klass->external_name(), |
duke@435 | 780 | resolved_method->name()->as_C_string(), |
duke@435 | 781 | resolved_method->signature()->as_C_string() |
duke@435 | 782 | ); |
duke@435 | 783 | return; |
duke@435 | 784 | } |
duke@435 | 785 | |
duke@435 | 786 | // check if not static |
duke@435 | 787 | if (resolved_method->is_static()) { |
jcoomes@2856 | 788 | ResourceMark rm(THREAD); |
duke@435 | 789 | char buf[200]; |
duke@435 | 790 | jio_snprintf(buf, sizeof(buf), |
duke@435 | 791 | "Expecting non-static method %s", |
hseigel@4278 | 792 | Method::name_and_sig_as_C_string(resolved_klass(), |
duke@435 | 793 | resolved_method->name(), |
duke@435 | 794 | resolved_method->signature())); |
duke@435 | 795 | THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
duke@435 | 796 | } |
duke@435 | 797 | } |
duke@435 | 798 | |
duke@435 | 799 | // throws runtime exceptions |
duke@435 | 800 | void LinkResolver::runtime_resolve_special_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, |
duke@435 | 801 | KlassHandle current_klass, bool check_access, TRAPS) { |
duke@435 | 802 | |
duke@435 | 803 | // resolved method is selected method unless we have an old-style lookup |
duke@435 | 804 | methodHandle sel_method(THREAD, resolved_method()); |
duke@435 | 805 | |
duke@435 | 806 | // check if this is an old-style super call and do a new lookup if so |
duke@435 | 807 | { KlassHandle method_klass = KlassHandle(THREAD, |
duke@435 | 808 | resolved_method->method_holder()); |
duke@435 | 809 | |
kamg@4245 | 810 | const bool direct_calling_default_method = |
kamg@4245 | 811 | resolved_klass() != NULL && resolved_method() != NULL && |
kamg@4245 | 812 | resolved_klass->is_interface() && !resolved_method->is_abstract(); |
kamg@4245 | 813 | |
kamg@4245 | 814 | if (!direct_calling_default_method && |
kamg@4245 | 815 | check_access && |
duke@435 | 816 | // a) check if ACC_SUPER flag is set for the current class |
duke@435 | 817 | current_klass->is_super() && |
duke@435 | 818 | // b) check if the method class is a superclass of the current class (superclass relation is not reflexive!) |
kamg@4245 | 819 | current_klass->is_subtype_of(method_klass()) && |
kamg@4245 | 820 | current_klass() != method_klass() && |
duke@435 | 821 | // c) check if the method is not <init> |
duke@435 | 822 | resolved_method->name() != vmSymbols::object_initializer_name()) { |
duke@435 | 823 | // Lookup super method |
duke@435 | 824 | KlassHandle super_klass(THREAD, current_klass->super()); |
duke@435 | 825 | lookup_instance_method_in_klasses(sel_method, super_klass, |
coleenp@2497 | 826 | resolved_method->name(), |
coleenp@2497 | 827 | resolved_method->signature(), CHECK); |
duke@435 | 828 | // check if found |
duke@435 | 829 | if (sel_method.is_null()) { |
duke@435 | 830 | ResourceMark rm(THREAD); |
duke@435 | 831 | THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), |
hseigel@4278 | 832 | Method::name_and_sig_as_C_string(resolved_klass(), |
duke@435 | 833 | resolved_method->name(), |
duke@435 | 834 | resolved_method->signature())); |
duke@435 | 835 | } |
duke@435 | 836 | } |
duke@435 | 837 | } |
duke@435 | 838 | |
duke@435 | 839 | // check if not static |
duke@435 | 840 | if (sel_method->is_static()) { |
jcoomes@2856 | 841 | ResourceMark rm(THREAD); |
duke@435 | 842 | char buf[200]; |
hseigel@4278 | 843 | jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", Method::name_and_sig_as_C_string(resolved_klass(), |
duke@435 | 844 | resolved_method->name(), |
duke@435 | 845 | resolved_method->signature())); |
duke@435 | 846 | THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
duke@435 | 847 | } |
duke@435 | 848 | |
duke@435 | 849 | // check if abstract |
duke@435 | 850 | if (sel_method->is_abstract()) { |
duke@435 | 851 | ResourceMark rm(THREAD); |
duke@435 | 852 | THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), |
hseigel@4278 | 853 | Method::name_and_sig_as_C_string(resolved_klass(), |
duke@435 | 854 | sel_method->name(), |
duke@435 | 855 | sel_method->signature())); |
duke@435 | 856 | } |
duke@435 | 857 | |
duke@435 | 858 | // setup result |
duke@435 | 859 | result.set_static(resolved_klass, sel_method, CHECK); |
duke@435 | 860 | } |
duke@435 | 861 | |
duke@435 | 862 | void LinkResolver::resolve_virtual_call(CallInfo& result, Handle recv, KlassHandle receiver_klass, KlassHandle resolved_klass, |
coleenp@2497 | 863 | Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, |
duke@435 | 864 | bool check_access, bool check_null_and_abstract, TRAPS) { |
duke@435 | 865 | methodHandle resolved_method; |
duke@435 | 866 | linktime_resolve_virtual_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); |
duke@435 | 867 | runtime_resolve_virtual_method(result, resolved_method, resolved_klass, recv, receiver_klass, check_null_and_abstract, CHECK); |
duke@435 | 868 | } |
duke@435 | 869 | |
duke@435 | 870 | // throws linktime exceptions |
duke@435 | 871 | void LinkResolver::linktime_resolve_virtual_method(methodHandle &resolved_method, KlassHandle resolved_klass, |
coleenp@2497 | 872 | Symbol* method_name, Symbol* method_signature, |
duke@435 | 873 | KlassHandle current_klass, bool check_access, TRAPS) { |
duke@435 | 874 | // normal method resolution |
duke@435 | 875 | resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); |
duke@435 | 876 | |
duke@435 | 877 | assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); |
duke@435 | 878 | assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); |
duke@435 | 879 | |
duke@435 | 880 | // check if not static |
duke@435 | 881 | if (resolved_method->is_static()) { |
jcoomes@2856 | 882 | ResourceMark rm(THREAD); |
duke@435 | 883 | char buf[200]; |
hseigel@4278 | 884 | jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", Method::name_and_sig_as_C_string(resolved_klass(), |
duke@435 | 885 | resolved_method->name(), |
duke@435 | 886 | resolved_method->signature())); |
duke@435 | 887 | THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
duke@435 | 888 | } |
duke@435 | 889 | } |
duke@435 | 890 | |
duke@435 | 891 | // throws runtime exceptions |
duke@435 | 892 | void LinkResolver::runtime_resolve_virtual_method(CallInfo& result, |
duke@435 | 893 | methodHandle resolved_method, |
duke@435 | 894 | KlassHandle resolved_klass, |
duke@435 | 895 | Handle recv, |
duke@435 | 896 | KlassHandle recv_klass, |
duke@435 | 897 | bool check_null_and_abstract, |
duke@435 | 898 | TRAPS) { |
duke@435 | 899 | |
duke@435 | 900 | // setup default return values |
coleenp@4037 | 901 | int vtable_index = Method::invalid_vtable_index; |
duke@435 | 902 | methodHandle selected_method; |
duke@435 | 903 | |
duke@435 | 904 | assert(recv.is_null() || recv->is_oop(), "receiver is not an oop"); |
duke@435 | 905 | |
duke@435 | 906 | // runtime method resolution |
duke@435 | 907 | if (check_null_and_abstract && recv.is_null()) { // check if receiver exists |
duke@435 | 908 | THROW(vmSymbols::java_lang_NullPointerException()); |
duke@435 | 909 | } |
duke@435 | 910 | |
coleenp@4037 | 911 | // Virtual methods cannot be resolved before its klass has been linked, for otherwise the Method*'s |
duke@435 | 912 | // has not been rewritten, and the vtable initialized. |
coleenp@4251 | 913 | assert(resolved_method->method_holder()->is_linked(), "must be linked"); |
duke@435 | 914 | |
coleenp@4037 | 915 | // Virtual methods cannot be resolved before its klass has been linked, for otherwise the Method*'s |
duke@435 | 916 | // has not been rewritten, and the vtable initialized. Make sure to do this after the nullcheck, since |
duke@435 | 917 | // a missing receiver might result in a bogus lookup. |
coleenp@4251 | 918 | assert(resolved_method->method_holder()->is_linked(), "must be linked"); |
duke@435 | 919 | |
duke@435 | 920 | // do lookup based on receiver klass using the vtable index |
coleenp@4037 | 921 | if (resolved_method->method_holder()->is_interface()) { // miranda method |
duke@435 | 922 | vtable_index = vtable_index_of_miranda_method(resolved_klass, |
coleenp@2497 | 923 | resolved_method->name(), |
coleenp@2497 | 924 | resolved_method->signature(), CHECK); |
duke@435 | 925 | assert(vtable_index >= 0 , "we should have valid vtable index at this point"); |
duke@435 | 926 | |
coleenp@4037 | 927 | InstanceKlass* inst = InstanceKlass::cast(recv_klass()); |
duke@435 | 928 | selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); |
duke@435 | 929 | } else { |
duke@435 | 930 | // at this point we are sure that resolved_method is virtual and not |
duke@435 | 931 | // a miranda method; therefore, it must have a valid vtable index. |
duke@435 | 932 | vtable_index = resolved_method->vtable_index(); |
duke@435 | 933 | // We could get a negative vtable_index for final methods, |
duke@435 | 934 | // because as an optimization they are they are never put in the vtable, |
duke@435 | 935 | // unless they override an existing method. |
duke@435 | 936 | // If we do get a negative, it means the resolved method is the the selected |
duke@435 | 937 | // method, and it can never be changed by an override. |
coleenp@4037 | 938 | if (vtable_index == Method::nonvirtual_vtable_index) { |
duke@435 | 939 | assert(resolved_method->can_be_statically_bound(), "cannot override this method"); |
duke@435 | 940 | selected_method = resolved_method; |
duke@435 | 941 | } else { |
duke@435 | 942 | // recv_klass might be an arrayKlassOop but all vtables start at |
duke@435 | 943 | // the same place. The cast is to avoid virtual call and assertion. |
coleenp@4037 | 944 | InstanceKlass* inst = (InstanceKlass*)recv_klass(); |
duke@435 | 945 | selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); |
duke@435 | 946 | } |
duke@435 | 947 | } |
duke@435 | 948 | |
duke@435 | 949 | // check if method exists |
duke@435 | 950 | if (selected_method.is_null()) { |
duke@435 | 951 | ResourceMark rm(THREAD); |
duke@435 | 952 | THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), |
hseigel@4278 | 953 | Method::name_and_sig_as_C_string(resolved_klass(), |
duke@435 | 954 | resolved_method->name(), |
duke@435 | 955 | resolved_method->signature())); |
duke@435 | 956 | } |
duke@435 | 957 | |
duke@435 | 958 | // check if abstract |
duke@435 | 959 | if (check_null_and_abstract && selected_method->is_abstract()) { |
duke@435 | 960 | ResourceMark rm(THREAD); |
duke@435 | 961 | THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), |
hseigel@4278 | 962 | Method::name_and_sig_as_C_string(resolved_klass(), |
duke@435 | 963 | selected_method->name(), |
duke@435 | 964 | selected_method->signature())); |
duke@435 | 965 | } |
duke@435 | 966 | |
duke@435 | 967 | // setup result |
duke@435 | 968 | result.set_virtual(resolved_klass, recv_klass, resolved_method, selected_method, vtable_index, CHECK); |
duke@435 | 969 | } |
duke@435 | 970 | |
duke@435 | 971 | void LinkResolver::resolve_interface_call(CallInfo& result, Handle recv, KlassHandle recv_klass, KlassHandle resolved_klass, |
coleenp@2497 | 972 | Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, |
duke@435 | 973 | bool check_access, bool check_null_and_abstract, TRAPS) { |
duke@435 | 974 | methodHandle resolved_method; |
duke@435 | 975 | linktime_resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); |
duke@435 | 976 | runtime_resolve_interface_method(result, resolved_method, resolved_klass, recv, recv_klass, check_null_and_abstract, CHECK); |
duke@435 | 977 | } |
duke@435 | 978 | |
duke@435 | 979 | // throws linktime exceptions |
coleenp@2497 | 980 | void LinkResolver::linktime_resolve_interface_method(methodHandle& resolved_method, KlassHandle resolved_klass, Symbol* method_name, |
coleenp@2497 | 981 | Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS) { |
duke@435 | 982 | // normal interface method resolution |
duke@435 | 983 | resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); |
duke@435 | 984 | |
duke@435 | 985 | assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); |
duke@435 | 986 | assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); |
duke@435 | 987 | } |
duke@435 | 988 | |
duke@435 | 989 | // throws runtime exceptions |
duke@435 | 990 | void LinkResolver::runtime_resolve_interface_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, |
duke@435 | 991 | Handle recv, KlassHandle recv_klass, bool check_null_and_abstract, TRAPS) { |
duke@435 | 992 | // check if receiver exists |
duke@435 | 993 | if (check_null_and_abstract && recv.is_null()) { |
duke@435 | 994 | THROW(vmSymbols::java_lang_NullPointerException()); |
duke@435 | 995 | } |
duke@435 | 996 | |
duke@435 | 997 | // check if receiver klass implements the resolved interface |
duke@435 | 998 | if (!recv_klass->is_subtype_of(resolved_klass())) { |
jcoomes@2856 | 999 | ResourceMark rm(THREAD); |
duke@435 | 1000 | char buf[200]; |
duke@435 | 1001 | jio_snprintf(buf, sizeof(buf), "Class %s does not implement the requested interface %s", |
hseigel@4278 | 1002 | recv_klass()->external_name(), |
hseigel@4278 | 1003 | resolved_klass()->external_name()); |
duke@435 | 1004 | THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
duke@435 | 1005 | } |
duke@435 | 1006 | // do lookup based on receiver klass |
duke@435 | 1007 | methodHandle sel_method; |
duke@435 | 1008 | lookup_instance_method_in_klasses(sel_method, recv_klass, |
coleenp@2497 | 1009 | resolved_method->name(), |
coleenp@2497 | 1010 | resolved_method->signature(), CHECK); |
duke@435 | 1011 | // check if method exists |
duke@435 | 1012 | if (sel_method.is_null()) { |
duke@435 | 1013 | ResourceMark rm(THREAD); |
duke@435 | 1014 | THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), |
hseigel@4278 | 1015 | Method::name_and_sig_as_C_string(recv_klass(), |
duke@435 | 1016 | resolved_method->name(), |
duke@435 | 1017 | resolved_method->signature())); |
duke@435 | 1018 | } |
duke@435 | 1019 | // check if public |
duke@435 | 1020 | if (!sel_method->is_public()) { |
duke@435 | 1021 | ResourceMark rm(THREAD); |
duke@435 | 1022 | THROW_MSG(vmSymbols::java_lang_IllegalAccessError(), |
hseigel@4278 | 1023 | Method::name_and_sig_as_C_string(recv_klass(), |
duke@435 | 1024 | sel_method->name(), |
duke@435 | 1025 | sel_method->signature())); |
duke@435 | 1026 | } |
duke@435 | 1027 | // check if abstract |
duke@435 | 1028 | if (check_null_and_abstract && sel_method->is_abstract()) { |
duke@435 | 1029 | ResourceMark rm(THREAD); |
duke@435 | 1030 | THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), |
hseigel@4278 | 1031 | Method::name_and_sig_as_C_string(recv_klass(), |
duke@435 | 1032 | sel_method->name(), |
duke@435 | 1033 | sel_method->signature())); |
duke@435 | 1034 | } |
duke@435 | 1035 | // setup result |
duke@435 | 1036 | result.set_interface(resolved_klass, recv_klass, resolved_method, sel_method, CHECK); |
duke@435 | 1037 | } |
duke@435 | 1038 | |
duke@435 | 1039 | |
duke@435 | 1040 | methodHandle LinkResolver::linktime_resolve_interface_method_or_null( |
duke@435 | 1041 | KlassHandle resolved_klass, |
coleenp@2497 | 1042 | Symbol* method_name, |
coleenp@2497 | 1043 | Symbol* method_signature, |
duke@435 | 1044 | KlassHandle current_klass, |
duke@435 | 1045 | bool check_access) { |
duke@435 | 1046 | EXCEPTION_MARK; |
duke@435 | 1047 | methodHandle method_result; |
duke@435 | 1048 | linktime_resolve_interface_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); |
duke@435 | 1049 | if (HAS_PENDING_EXCEPTION) { |
duke@435 | 1050 | CLEAR_PENDING_EXCEPTION; |
duke@435 | 1051 | return methodHandle(); |
duke@435 | 1052 | } else { |
duke@435 | 1053 | return method_result; |
duke@435 | 1054 | } |
duke@435 | 1055 | } |
duke@435 | 1056 | |
duke@435 | 1057 | methodHandle LinkResolver::linktime_resolve_virtual_method_or_null( |
duke@435 | 1058 | KlassHandle resolved_klass, |
coleenp@2497 | 1059 | Symbol* method_name, |
coleenp@2497 | 1060 | Symbol* method_signature, |
duke@435 | 1061 | KlassHandle current_klass, |
duke@435 | 1062 | bool check_access) { |
duke@435 | 1063 | EXCEPTION_MARK; |
duke@435 | 1064 | methodHandle method_result; |
duke@435 | 1065 | linktime_resolve_virtual_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); |
duke@435 | 1066 | if (HAS_PENDING_EXCEPTION) { |
duke@435 | 1067 | CLEAR_PENDING_EXCEPTION; |
duke@435 | 1068 | return methodHandle(); |
duke@435 | 1069 | } else { |
duke@435 | 1070 | return method_result; |
duke@435 | 1071 | } |
duke@435 | 1072 | } |
duke@435 | 1073 | |
duke@435 | 1074 | methodHandle LinkResolver::resolve_virtual_call_or_null( |
duke@435 | 1075 | KlassHandle receiver_klass, |
duke@435 | 1076 | KlassHandle resolved_klass, |
coleenp@2497 | 1077 | Symbol* name, |
coleenp@2497 | 1078 | Symbol* signature, |
duke@435 | 1079 | KlassHandle current_klass) { |
duke@435 | 1080 | EXCEPTION_MARK; |
duke@435 | 1081 | CallInfo info; |
duke@435 | 1082 | resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); |
duke@435 | 1083 | if (HAS_PENDING_EXCEPTION) { |
duke@435 | 1084 | CLEAR_PENDING_EXCEPTION; |
duke@435 | 1085 | return methodHandle(); |
duke@435 | 1086 | } |
duke@435 | 1087 | return info.selected_method(); |
duke@435 | 1088 | } |
duke@435 | 1089 | |
duke@435 | 1090 | methodHandle LinkResolver::resolve_interface_call_or_null( |
duke@435 | 1091 | KlassHandle receiver_klass, |
duke@435 | 1092 | KlassHandle resolved_klass, |
coleenp@2497 | 1093 | Symbol* name, |
coleenp@2497 | 1094 | Symbol* signature, |
duke@435 | 1095 | KlassHandle current_klass) { |
duke@435 | 1096 | EXCEPTION_MARK; |
duke@435 | 1097 | CallInfo info; |
duke@435 | 1098 | resolve_interface_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); |
duke@435 | 1099 | if (HAS_PENDING_EXCEPTION) { |
duke@435 | 1100 | CLEAR_PENDING_EXCEPTION; |
duke@435 | 1101 | return methodHandle(); |
duke@435 | 1102 | } |
duke@435 | 1103 | return info.selected_method(); |
duke@435 | 1104 | } |
duke@435 | 1105 | |
duke@435 | 1106 | int LinkResolver::resolve_virtual_vtable_index( |
duke@435 | 1107 | KlassHandle receiver_klass, |
duke@435 | 1108 | KlassHandle resolved_klass, |
coleenp@2497 | 1109 | Symbol* name, |
coleenp@2497 | 1110 | Symbol* signature, |
duke@435 | 1111 | KlassHandle current_klass) { |
duke@435 | 1112 | EXCEPTION_MARK; |
duke@435 | 1113 | CallInfo info; |
duke@435 | 1114 | resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); |
duke@435 | 1115 | if (HAS_PENDING_EXCEPTION) { |
duke@435 | 1116 | CLEAR_PENDING_EXCEPTION; |
coleenp@4037 | 1117 | return Method::invalid_vtable_index; |
duke@435 | 1118 | } |
duke@435 | 1119 | return info.vtable_index(); |
duke@435 | 1120 | } |
duke@435 | 1121 | |
duke@435 | 1122 | methodHandle LinkResolver::resolve_static_call_or_null( |
duke@435 | 1123 | KlassHandle resolved_klass, |
coleenp@2497 | 1124 | Symbol* name, |
coleenp@2497 | 1125 | Symbol* signature, |
duke@435 | 1126 | KlassHandle current_klass) { |
duke@435 | 1127 | EXCEPTION_MARK; |
duke@435 | 1128 | CallInfo info; |
duke@435 | 1129 | resolve_static_call(info, resolved_klass, name, signature, current_klass, true, false, THREAD); |
duke@435 | 1130 | if (HAS_PENDING_EXCEPTION) { |
duke@435 | 1131 | CLEAR_PENDING_EXCEPTION; |
duke@435 | 1132 | return methodHandle(); |
duke@435 | 1133 | } |
duke@435 | 1134 | return info.selected_method(); |
duke@435 | 1135 | } |
duke@435 | 1136 | |
coleenp@2497 | 1137 | methodHandle LinkResolver::resolve_special_call_or_null(KlassHandle resolved_klass, Symbol* name, Symbol* signature, |
duke@435 | 1138 | KlassHandle current_klass) { |
duke@435 | 1139 | EXCEPTION_MARK; |
duke@435 | 1140 | CallInfo info; |
duke@435 | 1141 | resolve_special_call(info, resolved_klass, name, signature, current_klass, true, THREAD); |
duke@435 | 1142 | if (HAS_PENDING_EXCEPTION) { |
duke@435 | 1143 | CLEAR_PENDING_EXCEPTION; |
duke@435 | 1144 | return methodHandle(); |
duke@435 | 1145 | } |
duke@435 | 1146 | return info.selected_method(); |
duke@435 | 1147 | } |
duke@435 | 1148 | |
duke@435 | 1149 | |
duke@435 | 1150 | |
duke@435 | 1151 | //------------------------------------------------------------------------------------------------------------------------ |
duke@435 | 1152 | // ConstantPool entries |
duke@435 | 1153 | |
duke@435 | 1154 | void LinkResolver::resolve_invoke(CallInfo& result, Handle recv, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS) { |
duke@435 | 1155 | switch (byte) { |
duke@435 | 1156 | case Bytecodes::_invokestatic : resolve_invokestatic (result, pool, index, CHECK); break; |
duke@435 | 1157 | case Bytecodes::_invokespecial : resolve_invokespecial (result, pool, index, CHECK); break; |
duke@435 | 1158 | case Bytecodes::_invokevirtual : resolve_invokevirtual (result, recv, pool, index, CHECK); break; |
twisti@3969 | 1159 | case Bytecodes::_invokehandle : resolve_invokehandle (result, pool, index, CHECK); break; |
jrose@1161 | 1160 | case Bytecodes::_invokedynamic : resolve_invokedynamic (result, pool, index, CHECK); break; |
duke@435 | 1161 | case Bytecodes::_invokeinterface: resolve_invokeinterface(result, recv, pool, index, CHECK); break; |
duke@435 | 1162 | } |
duke@435 | 1163 | return; |
duke@435 | 1164 | } |
duke@435 | 1165 | |
coleenp@2497 | 1166 | void LinkResolver::resolve_pool(KlassHandle& resolved_klass, Symbol*& method_name, Symbol*& method_signature, |
duke@435 | 1167 | KlassHandle& current_klass, constantPoolHandle pool, int index, TRAPS) { |
duke@435 | 1168 | // resolve klass |
duke@435 | 1169 | resolve_klass(resolved_klass, pool, index, CHECK); |
duke@435 | 1170 | |
duke@435 | 1171 | // Get name, signature, and static klass |
coleenp@2497 | 1172 | method_name = pool->name_ref_at(index); |
coleenp@2497 | 1173 | method_signature = pool->signature_ref_at(index); |
duke@435 | 1174 | current_klass = KlassHandle(THREAD, pool->pool_holder()); |
duke@435 | 1175 | } |
duke@435 | 1176 | |
duke@435 | 1177 | |
duke@435 | 1178 | void LinkResolver::resolve_invokestatic(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { |
duke@435 | 1179 | KlassHandle resolved_klass; |
coleenp@2497 | 1180 | Symbol* method_name = NULL; |
coleenp@2497 | 1181 | Symbol* method_signature = NULL; |
duke@435 | 1182 | KlassHandle current_klass; |
duke@435 | 1183 | resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); |
duke@435 | 1184 | resolve_static_call(result, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
duke@435 | 1185 | } |
duke@435 | 1186 | |
duke@435 | 1187 | |
duke@435 | 1188 | void LinkResolver::resolve_invokespecial(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { |
duke@435 | 1189 | KlassHandle resolved_klass; |
coleenp@2497 | 1190 | Symbol* method_name = NULL; |
coleenp@2497 | 1191 | Symbol* method_signature = NULL; |
duke@435 | 1192 | KlassHandle current_klass; |
duke@435 | 1193 | resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); |
duke@435 | 1194 | resolve_special_call(result, resolved_klass, method_name, method_signature, current_klass, true, CHECK); |
duke@435 | 1195 | } |
duke@435 | 1196 | |
duke@435 | 1197 | |
duke@435 | 1198 | void LinkResolver::resolve_invokevirtual(CallInfo& result, Handle recv, |
duke@435 | 1199 | constantPoolHandle pool, int index, |
duke@435 | 1200 | TRAPS) { |
duke@435 | 1201 | |
duke@435 | 1202 | KlassHandle resolved_klass; |
coleenp@2497 | 1203 | Symbol* method_name = NULL; |
coleenp@2497 | 1204 | Symbol* method_signature = NULL; |
duke@435 | 1205 | KlassHandle current_klass; |
duke@435 | 1206 | resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); |
coleenp@4037 | 1207 | KlassHandle recvrKlass (THREAD, recv.is_null() ? (Klass*)NULL : recv->klass()); |
duke@435 | 1208 | resolve_virtual_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
duke@435 | 1209 | } |
duke@435 | 1210 | |
duke@435 | 1211 | |
duke@435 | 1212 | void LinkResolver::resolve_invokeinterface(CallInfo& result, Handle recv, constantPoolHandle pool, int index, TRAPS) { |
duke@435 | 1213 | KlassHandle resolved_klass; |
coleenp@2497 | 1214 | Symbol* method_name = NULL; |
coleenp@2497 | 1215 | Symbol* method_signature = NULL; |
duke@435 | 1216 | KlassHandle current_klass; |
duke@435 | 1217 | resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); |
coleenp@4037 | 1218 | KlassHandle recvrKlass (THREAD, recv.is_null() ? (Klass*)NULL : recv->klass()); |
duke@435 | 1219 | resolve_interface_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
duke@435 | 1220 | } |
duke@435 | 1221 | |
jrose@1161 | 1222 | |
twisti@3969 | 1223 | void LinkResolver::resolve_invokehandle(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { |
jrose@1161 | 1224 | assert(EnableInvokeDynamic, ""); |
twisti@3969 | 1225 | // This guy is reached from InterpreterRuntime::resolve_invokehandle. |
twisti@3969 | 1226 | KlassHandle resolved_klass; |
twisti@3969 | 1227 | Symbol* method_name = NULL; |
twisti@3969 | 1228 | Symbol* method_signature = NULL; |
twisti@3969 | 1229 | KlassHandle current_klass; |
twisti@3969 | 1230 | resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); |
twisti@3969 | 1231 | if (TraceMethodHandles) |
twisti@3969 | 1232 | tty->print_cr("resolve_invokehandle %s %s", method_name->as_C_string(), method_signature->as_C_string()); |
twisti@3969 | 1233 | resolve_handle_call(result, resolved_klass, method_name, method_signature, current_klass, CHECK); |
twisti@3969 | 1234 | } |
jrose@1161 | 1235 | |
twisti@3969 | 1236 | void LinkResolver::resolve_handle_call(CallInfo& result, KlassHandle resolved_klass, |
twisti@3969 | 1237 | Symbol* method_name, Symbol* method_signature, |
twisti@3969 | 1238 | KlassHandle current_klass, |
twisti@3969 | 1239 | TRAPS) { |
twisti@3969 | 1240 | // JSR 292: this must be an implicitly generated method MethodHandle.invokeExact(*...) or similar |
twisti@3969 | 1241 | assert(resolved_klass() == SystemDictionary::MethodHandle_klass(), ""); |
twisti@3969 | 1242 | assert(MethodHandles::is_signature_polymorphic_name(method_name), ""); |
twisti@3969 | 1243 | methodHandle resolved_method; |
twisti@4133 | 1244 | Handle resolved_appendix; |
twisti@4133 | 1245 | Handle resolved_method_type; |
twisti@3969 | 1246 | lookup_polymorphic_method(resolved_method, resolved_klass, |
twisti@3969 | 1247 | method_name, method_signature, |
twisti@4133 | 1248 | current_klass, &resolved_appendix, &resolved_method_type, CHECK); |
twisti@4133 | 1249 | result.set_handle(resolved_method, resolved_appendix, resolved_method_type, CHECK); |
twisti@3969 | 1250 | } |
jrose@1161 | 1251 | |
jrose@1161 | 1252 | |
twisti@3969 | 1253 | void LinkResolver::resolve_invokedynamic(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { |
twisti@3969 | 1254 | assert(EnableInvokeDynamic, ""); |
twisti@3969 | 1255 | pool->set_invokedynamic(); // mark header to flag active call sites |
twisti@3969 | 1256 | |
twisti@4133 | 1257 | //resolve_pool(<resolved_klass>, method_name, method_signature, current_klass, pool, index, CHECK); |
twisti@3969 | 1258 | Symbol* method_name = pool->name_ref_at(index); |
twisti@3969 | 1259 | Symbol* method_signature = pool->signature_ref_at(index); |
twisti@3969 | 1260 | KlassHandle current_klass = KlassHandle(THREAD, pool->pool_holder()); |
twisti@3969 | 1261 | |
twisti@3969 | 1262 | // Resolve the bootstrap specifier (BSM + optional arguments). |
twisti@3969 | 1263 | Handle bootstrap_specifier; |
twisti@3969 | 1264 | // Check if CallSite has been bound already: |
coleenp@4037 | 1265 | ConstantPoolCacheEntry* cpce = pool->invokedynamic_cp_cache_entry_at(index); |
twisti@3969 | 1266 | if (cpce->is_f1_null()) { |
coleenp@4037 | 1267 | int pool_index = cpce->constant_pool_index(); |
twisti@3969 | 1268 | oop bsm_info = pool->resolve_bootstrap_specifier_at(pool_index, CHECK); |
twisti@3969 | 1269 | assert(bsm_info != NULL, ""); |
twisti@3969 | 1270 | // FIXME: Cache this once per BootstrapMethods entry, not once per CONSTANT_InvokeDynamic. |
twisti@3969 | 1271 | bootstrap_specifier = Handle(THREAD, bsm_info); |
twisti@3969 | 1272 | } |
twisti@3969 | 1273 | if (!cpce->is_f1_null()) { |
twisti@4133 | 1274 | methodHandle method( THREAD, cpce->f1_as_method()); |
twisti@4133 | 1275 | Handle appendix( THREAD, cpce->appendix_if_resolved(pool)); |
twisti@4133 | 1276 | Handle method_type(THREAD, cpce->method_type_if_resolved(pool)); |
twisti@4133 | 1277 | result.set_handle(method, appendix, method_type, CHECK); |
twisti@3969 | 1278 | return; |
twisti@3969 | 1279 | } |
twisti@3969 | 1280 | |
twisti@3969 | 1281 | if (TraceMethodHandles) { |
twisti@3969 | 1282 | tty->print_cr("resolve_invokedynamic #%d %s %s", |
coleenp@4037 | 1283 | ConstantPool::decode_invokedynamic_index(index), |
twisti@3969 | 1284 | method_name->as_C_string(), method_signature->as_C_string()); |
twisti@3969 | 1285 | tty->print(" BSM info: "); bootstrap_specifier->print(); |
twisti@3969 | 1286 | } |
twisti@3969 | 1287 | |
twisti@3969 | 1288 | resolve_dynamic_call(result, bootstrap_specifier, method_name, method_signature, current_klass, CHECK); |
twisti@3969 | 1289 | } |
twisti@3969 | 1290 | |
twisti@3969 | 1291 | void LinkResolver::resolve_dynamic_call(CallInfo& result, |
twisti@3969 | 1292 | Handle bootstrap_specifier, |
twisti@3969 | 1293 | Symbol* method_name, Symbol* method_signature, |
twisti@3969 | 1294 | KlassHandle current_klass, |
twisti@3969 | 1295 | TRAPS) { |
twisti@3969 | 1296 | // JSR 292: this must resolve to an implicitly generated method MH.linkToCallSite(*...) |
twisti@3969 | 1297 | // The appendix argument is likely to be a freshly-created CallSite. |
twisti@3969 | 1298 | Handle resolved_appendix; |
twisti@4133 | 1299 | Handle resolved_method_type; |
twisti@3969 | 1300 | methodHandle resolved_method = |
twisti@3969 | 1301 | SystemDictionary::find_dynamic_call_site_invoker(current_klass, |
twisti@3969 | 1302 | bootstrap_specifier, |
twisti@3969 | 1303 | method_name, method_signature, |
twisti@3969 | 1304 | &resolved_appendix, |
twisti@4133 | 1305 | &resolved_method_type, |
twisti@4041 | 1306 | THREAD); |
jrose@2941 | 1307 | if (HAS_PENDING_EXCEPTION) { |
twisti@3969 | 1308 | if (TraceMethodHandles) { |
twisti@3969 | 1309 | tty->print_cr("invokedynamic throws BSME for "INTPTR_FORMAT, PENDING_EXCEPTION); |
twisti@3969 | 1310 | PENDING_EXCEPTION->print(); |
twisti@3969 | 1311 | } |
jrose@2941 | 1312 | if (PENDING_EXCEPTION->is_a(SystemDictionary::BootstrapMethodError_klass())) { |
jrose@2941 | 1313 | // throw these guys, since they are already wrapped |
jrose@2941 | 1314 | return; |
jrose@2941 | 1315 | } |
jrose@2941 | 1316 | if (!PENDING_EXCEPTION->is_a(SystemDictionary::LinkageError_klass())) { |
jrose@2941 | 1317 | // intercept only LinkageErrors which might have failed to wrap |
jrose@2941 | 1318 | return; |
jrose@2941 | 1319 | } |
jrose@2941 | 1320 | // See the "Linking Exceptions" section for the invokedynamic instruction in the JVMS. |
twisti@3969 | 1321 | Handle nested_exception(THREAD, PENDING_EXCEPTION); |
jrose@2941 | 1322 | CLEAR_PENDING_EXCEPTION; |
twisti@4041 | 1323 | THROW_CAUSE(vmSymbols::java_lang_BootstrapMethodError(), nested_exception) |
jrose@2941 | 1324 | } |
twisti@4133 | 1325 | result.set_handle(resolved_method, resolved_appendix, resolved_method_type, CHECK); |
jrose@1161 | 1326 | } |
jrose@1161 | 1327 | |
duke@435 | 1328 | //------------------------------------------------------------------------------------------------------------------------ |
duke@435 | 1329 | #ifndef PRODUCT |
duke@435 | 1330 | |
duke@435 | 1331 | void FieldAccessInfo::print() { |
duke@435 | 1332 | ResourceMark rm; |
duke@435 | 1333 | tty->print_cr("Field %s@%d", name()->as_C_string(), field_offset()); |
duke@435 | 1334 | } |
duke@435 | 1335 | |
duke@435 | 1336 | #endif |