1 /* 2 * Copyright (c) 1997, 2025, Oracle and/or its affiliates. All rights reserved. 3 * Copyright (c) 2021, Azul Systems, Inc. All rights reserved. 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This code is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 only, as 8 * published by the Free Software Foundation. 9 * 10 * This code is distributed in the hope that it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * version 2 for more details (a copy is included in the LICENSE file that 14 * accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License version 17 * 2 along with this work; if not, write to the Free Software Foundation, 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 * 20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 * or visit www.oracle.com if you need additional information or have any 22 * questions. 23 * 24 */ 25 26 #include "precompiled.hpp" 27 #include "classfile/vmSymbols.hpp" 28 #include "code/nmethod.hpp" 29 #include "compiler/compilationPolicy.hpp" 30 #include "compiler/compileBroker.hpp" 31 #include "interpreter/interpreter.hpp" 32 #include "interpreter/linkResolver.hpp" 33 #include "memory/universe.hpp" 34 #include "oops/method.inline.hpp" 35 #include "oops/oop.inline.hpp" 36 #include "oops/inlineKlass.hpp" 37 #include "prims/jniCheck.hpp" 38 #include "prims/jvmtiExport.hpp" 39 #include "runtime/handles.inline.hpp" 40 #include "runtime/interfaceSupport.inline.hpp" 41 #include "runtime/javaCalls.hpp" 42 #include "runtime/javaThread.hpp" 43 #include "runtime/jniHandles.inline.hpp" 44 #include "runtime/mutexLocker.hpp" 45 #include "runtime/os.inline.hpp" 46 #include "runtime/sharedRuntime.hpp" 47 #include "runtime/signature.hpp" 48 #include "runtime/stubRoutines.hpp" 49 #include "runtime/thread.inline.hpp" 50 #if INCLUDE_JVMCI 51 #include "jvmci/jvmciJavaClasses.hpp" 52 #endif 53 54 // ----------------------------------------------------- 55 // Implementation of JavaCallWrapper 56 57 JavaCallWrapper::JavaCallWrapper(const methodHandle& callee_method, Handle receiver, JavaValue* result, TRAPS) { 58 JavaThread* thread = THREAD; 59 60 guarantee(thread->is_Java_thread(), "crucial check - the VM thread cannot and must not escape to Java code"); 61 assert(!thread->owns_locks(), "must release all locks when leaving VM"); 62 guarantee(thread->can_call_java(), "cannot make java calls from the native compiler"); 63 _result = result; 64 65 // Allocate handle block for Java code. This must be done before we change thread_state to _thread_in_Java_or_stub, 66 // since it can potentially block. 67 JNIHandleBlock* new_handles = JNIHandleBlock::allocate_block(thread); 68 69 // clear any pending exception in thread (native calls start with no exception pending) 70 thread->clear_pending_exception(); 71 72 // After this, we are official in JavaCode. This needs to be done before we change any of the thread local 73 // info, since we cannot find oops before the new information is set up completely. 74 ThreadStateTransition::transition_from_vm(thread, _thread_in_Java, true /* check_asyncs */); 75 76 // Make sure to set the oop's after the thread transition - since we can block there. No one is GC'ing 77 // the JavaCallWrapper before the entry frame is on the stack. 78 _callee_method = callee_method(); 79 _receiver = receiver(); 80 81 #ifdef CHECK_UNHANDLED_OOPS 82 THREAD->allow_unhandled_oop(&_receiver); 83 #endif // CHECK_UNHANDLED_OOPS 84 85 _thread = thread; 86 _handles = _thread->active_handles(); // save previous handle block & Java frame linkage 87 88 // For the profiler, the last_Java_frame information in thread must always be in 89 // legal state. We have no last Java frame if last_Java_sp == nullptr so 90 // the valid transition is to clear _last_Java_sp and then reset the rest of 91 // the (platform specific) state. 92 93 _anchor.copy(_thread->frame_anchor()); 94 _thread->frame_anchor()->clear(); 95 96 debug_only(_thread->inc_java_call_counter()); 97 _thread->set_active_handles(new_handles); // install new handle block and reset Java frame linkage 98 99 MACOS_AARCH64_ONLY(_thread->enable_wx(WXExec)); 100 } 101 102 103 JavaCallWrapper::~JavaCallWrapper() { 104 assert(_thread == JavaThread::current(), "must still be the same thread"); 105 106 MACOS_AARCH64_ONLY(_thread->enable_wx(WXWrite)); 107 108 // restore previous handle block & Java frame linkage 109 JNIHandleBlock *_old_handles = _thread->active_handles(); 110 _thread->set_active_handles(_handles); 111 112 _thread->frame_anchor()->zap(); 113 114 debug_only(_thread->dec_java_call_counter()); 115 116 // Old thread-local info. has been restored. We are not back in the VM. 117 ThreadStateTransition::transition_from_java(_thread, _thread_in_vm); 118 119 // State has been restored now make the anchor frame visible for the profiler. 120 _thread->frame_anchor()->copy(&_anchor); 121 122 // Release handles after we are marked as being inside the VM again, since this 123 // operation might block 124 JNIHandleBlock::release_block(_old_handles, _thread); 125 126 if (_thread->has_pending_exception() && _thread->has_last_Java_frame()) { 127 // If we get here, the Java code threw an exception that unwound a frame. 128 // It could be that the new frame anchor has not passed through the required 129 // StackWatermark barriers. Therefore, we process any such deferred unwind 130 // requests here. 131 StackWatermarkSet::after_unwind(_thread); 132 } 133 } 134 135 136 void JavaCallWrapper::oops_do(OopClosure* f) { 137 f->do_oop((oop*)&_receiver); 138 handles()->oops_do(f); 139 } 140 141 142 // Helper methods 143 static BasicType runtime_type_from(JavaValue* result) { 144 switch (result->get_type()) { 145 case T_BOOLEAN : // fall through 146 case T_CHAR : // fall through 147 case T_SHORT : // fall through 148 case T_INT : // fall through 149 #ifndef _LP64 150 case T_OBJECT : // fall through 151 case T_ARRAY : // fall through 152 case T_FLAT_ELEMENT: // fall through 153 #endif 154 case T_BYTE : // fall through 155 case T_VOID : return T_INT; 156 case T_LONG : return T_LONG; 157 case T_FLOAT : return T_FLOAT; 158 case T_DOUBLE : return T_DOUBLE; 159 #ifdef _LP64 160 case T_ARRAY : // fall through 161 case T_OBJECT : return T_OBJECT; 162 #endif 163 default: 164 ShouldNotReachHere(); 165 return T_ILLEGAL; 166 } 167 } 168 169 // ============ Virtual calls ============ 170 171 void JavaCalls::call_virtual(JavaValue* result, Klass* spec_klass, Symbol* name, Symbol* signature, JavaCallArguments* args, TRAPS) { 172 CallInfo callinfo; 173 Handle receiver = args->receiver(); 174 Klass* recvrKlass = receiver.is_null() ? (Klass*)nullptr : receiver->klass(); 175 LinkInfo link_info(spec_klass, name, signature); 176 LinkResolver::resolve_virtual_call( 177 callinfo, receiver, recvrKlass, link_info, true, CHECK); 178 methodHandle method(THREAD, callinfo.selected_method()); 179 assert(method.not_null(), "should have thrown exception"); 180 181 // Invoke the method 182 JavaCalls::call(result, method, args, CHECK); 183 } 184 185 186 void JavaCalls::call_virtual(JavaValue* result, Handle receiver, Klass* spec_klass, Symbol* name, Symbol* signature, TRAPS) { 187 JavaCallArguments args(receiver); 188 call_virtual(result, spec_klass, name, signature, &args, CHECK); 189 } 190 191 192 void JavaCalls::call_virtual(JavaValue* result, Handle receiver, Klass* spec_klass, Symbol* name, Symbol* signature, Handle arg1, TRAPS) { 193 JavaCallArguments args(receiver); 194 args.push_oop(arg1); 195 call_virtual(result, spec_klass, name, signature, &args, CHECK); 196 } 197 198 199 200 void JavaCalls::call_virtual(JavaValue* result, Handle receiver, Klass* spec_klass, Symbol* name, Symbol* signature, Handle arg1, Handle arg2, TRAPS) { 201 JavaCallArguments args(receiver); 202 args.push_oop(arg1); 203 args.push_oop(arg2); 204 call_virtual(result, spec_klass, name, signature, &args, CHECK); 205 } 206 207 208 // ============ Special calls ============ 209 210 void JavaCalls::call_special(JavaValue* result, Klass* klass, Symbol* name, Symbol* signature, JavaCallArguments* args, TRAPS) { 211 CallInfo callinfo; 212 LinkInfo link_info(klass, name, signature); 213 LinkResolver::resolve_special_call(callinfo, args->receiver(), link_info, CHECK); 214 methodHandle method(THREAD, callinfo.selected_method()); 215 assert(method.not_null(), "should have thrown exception"); 216 217 // Invoke the method 218 JavaCalls::call(result, method, args, CHECK); 219 } 220 221 222 void JavaCalls::call_special(JavaValue* result, Handle receiver, Klass* klass, Symbol* name, Symbol* signature, TRAPS) { 223 JavaCallArguments args(receiver); 224 call_special(result, klass, name, signature, &args, CHECK); 225 } 226 227 228 void JavaCalls::call_special(JavaValue* result, Handle receiver, Klass* klass, Symbol* name, Symbol* signature, Handle arg1, TRAPS) { 229 JavaCallArguments args(receiver); 230 args.push_oop(arg1); 231 call_special(result, klass, name, signature, &args, CHECK); 232 } 233 234 235 void JavaCalls::call_special(JavaValue* result, Handle receiver, Klass* klass, Symbol* name, Symbol* signature, Handle arg1, Handle arg2, TRAPS) { 236 JavaCallArguments args(receiver); 237 args.push_oop(arg1); 238 args.push_oop(arg2); 239 call_special(result, klass, name, signature, &args, CHECK); 240 } 241 242 243 // ============ Static calls ============ 244 245 void JavaCalls::call_static(JavaValue* result, Klass* klass, Symbol* name, Symbol* signature, JavaCallArguments* args, TRAPS) { 246 CallInfo callinfo; 247 LinkInfo link_info(klass, name, signature); 248 LinkResolver::resolve_static_call(callinfo, link_info, true, CHECK); 249 methodHandle method(THREAD, callinfo.selected_method()); 250 assert(method.not_null(), "should have thrown exception"); 251 252 // Invoke the method 253 JavaCalls::call(result, method, args, CHECK); 254 } 255 256 257 void JavaCalls::call_static(JavaValue* result, Klass* klass, Symbol* name, Symbol* signature, TRAPS) { 258 JavaCallArguments args; 259 call_static(result, klass, name, signature, &args, CHECK); 260 } 261 262 263 void JavaCalls::call_static(JavaValue* result, Klass* klass, Symbol* name, Symbol* signature, Handle arg1, TRAPS) { 264 JavaCallArguments args(arg1); 265 call_static(result, klass, name, signature, &args, CHECK); 266 } 267 268 269 void JavaCalls::call_static(JavaValue* result, Klass* klass, Symbol* name, Symbol* signature, Handle arg1, Handle arg2, TRAPS) { 270 JavaCallArguments args; 271 args.push_oop(arg1); 272 args.push_oop(arg2); 273 call_static(result, klass, name, signature, &args, CHECK); 274 } 275 276 277 void JavaCalls::call_static(JavaValue* result, Klass* klass, Symbol* name, Symbol* signature, Handle arg1, Handle arg2, Handle arg3, TRAPS) { 278 JavaCallArguments args; 279 args.push_oop(arg1); 280 args.push_oop(arg2); 281 args.push_oop(arg3); 282 call_static(result, klass, name, signature, &args, CHECK); 283 } 284 285 // ============ allocate and initialize new object instance ============ 286 287 Handle JavaCalls::construct_new_instance(InstanceKlass* klass, Symbol* constructor_signature, JavaCallArguments* args, TRAPS) { 288 klass->initialize(CHECK_NH); // Quick no-op if already initialized. 289 Handle obj = klass->allocate_instance_handle(CHECK_NH); 290 JavaValue void_result(T_VOID); 291 args->set_receiver(obj); // inserts <obj> as the first argument. 292 JavaCalls::call_special(&void_result, klass, 293 vmSymbols::object_initializer_name(), 294 constructor_signature, args, CHECK_NH); 295 // Already returned a Null Handle if any exception is pending. 296 return obj; 297 } 298 299 Handle JavaCalls::construct_new_instance(InstanceKlass* klass, Symbol* constructor_signature, TRAPS) { 300 JavaCallArguments args; 301 return JavaCalls::construct_new_instance(klass, constructor_signature, &args, THREAD); 302 } 303 304 Handle JavaCalls::construct_new_instance(InstanceKlass* klass, Symbol* constructor_signature, Handle arg1, TRAPS) { 305 JavaCallArguments args; 306 args.push_oop(arg1); 307 return JavaCalls::construct_new_instance(klass, constructor_signature, &args, THREAD); 308 } 309 310 Handle JavaCalls::construct_new_instance(InstanceKlass* klass, Symbol* constructor_signature, Handle arg1, Handle arg2, TRAPS) { 311 JavaCallArguments args; 312 args.push_oop(arg1); 313 args.push_oop(arg2); 314 return JavaCalls::construct_new_instance(klass, constructor_signature, &args, THREAD); 315 } 316 317 // ------------------------------------------------- 318 // Implementation of JavaCalls (low level) 319 320 321 void JavaCalls::call(JavaValue* result, const methodHandle& method, JavaCallArguments* args, TRAPS) { 322 // Check if we need to wrap a potential OS exception handler around thread. 323 // This is used for e.g. Win32 structured exception handlers. 324 // Need to wrap each and every time, since there might be native code down the 325 // stack that has installed its own exception handlers. 326 os::os_exception_wrapper(call_helper, result, method, args, THREAD); 327 } 328 329 void JavaCalls::call_helper(JavaValue* result, const methodHandle& method, JavaCallArguments* args, TRAPS) { 330 331 JavaThread* thread = THREAD; 332 assert(method.not_null(), "must have a method to call"); 333 assert(!SafepointSynchronize::is_at_safepoint(), "call to Java code during VM operation"); 334 assert(!thread->handle_area()->no_handle_mark_active(), "cannot call out to Java here"); 335 336 // Verify the arguments 337 if (JVMCI_ONLY(args->alternative_target().is_null() &&) (DEBUG_ONLY(true ||) CheckJNICalls)) { 338 args->verify(method, result->get_type()); 339 } 340 // Ignore call if method is empty 341 if (JVMCI_ONLY(args->alternative_target().is_null() &&) method->is_empty_method()) { 342 assert(result->get_type() == T_VOID, "an empty method must return a void value"); 343 return; 344 } 345 346 #ifdef ASSERT 347 { InstanceKlass* holder = method->method_holder(); 348 // A klass might not be initialized since JavaCall's might be used during the executing of 349 // the <clinit>. For example, a Thread.start might start executing on an object that is 350 // not fully initialized! (bad Java programming style) 351 assert(holder->is_linked(), "rewriting must have taken place"); 352 } 353 #endif 354 355 CompilationPolicy::compile_if_required(method, CHECK); 356 357 // Figure out if the result value is an oop or not (Note: This is a different value 358 // than result_type. result_type will be T_INT of oops. (it is about size) 359 BasicType result_type = runtime_type_from(result); 360 bool oop_result_flag = is_reference_type(result->get_type()); 361 362 // Find receiver 363 Handle receiver = (!method->is_static()) ? args->receiver() : Handle(); 364 365 // When we reenter Java, we need to re-enable the reserved/yellow zone which 366 // might already be disabled when we are in VM. 367 thread->stack_overflow_state()->reguard_stack_if_needed(); 368 369 // Check that there are shadow pages available before changing thread state 370 // to Java. Calculate current_stack_pointer here to make sure 371 // stack_shadow_pages_available() and map_stack_shadow_pages() use the same sp. 372 address sp = os::current_stack_pointer(); 373 if (!os::stack_shadow_pages_available(THREAD, method, sp)) { 374 // Throw stack overflow exception with preinitialized exception. 375 Exceptions::throw_stack_overflow_exception(THREAD, __FILE__, __LINE__, method); 376 return; 377 } else { 378 // Touch pages checked if the OS needs them to be touched to be mapped. 379 os::map_stack_shadow_pages(sp); 380 } 381 382 jobject value_buffer = nullptr; 383 if (InlineTypeReturnedAsFields && (result->get_type() == T_OBJECT)) { 384 // Pre allocate a buffered inline type in case the result is returned 385 // flattened by compiled code 386 InlineKlass* vk = method->returns_inline_type(thread); 387 if (vk != nullptr && vk->can_be_returned_as_fields()) { 388 oop instance = vk->allocate_instance(CHECK); 389 value_buffer = JNIHandles::make_local(thread, instance); 390 result->set_jobject(value_buffer); 391 } 392 } 393 394 // do call 395 { JavaCallWrapper link(method, receiver, result, CHECK); 396 { HandleMark hm(thread); // HandleMark used by HandleMarkCleaner 397 398 // NOTE: if we move the computation of the result_val_address inside 399 // the call to call_stub, the optimizer produces wrong code. 400 intptr_t* result_val_address = (intptr_t*)(result->get_value_addr()); 401 intptr_t* parameter_address = args->parameters(); 402 403 address entry_point; 404 { 405 // The enter_interp_only_mode use handshake to set interp_only mode 406 // so no safepoint should be allowed between is_interp_only_mode() and call 407 NoSafepointVerifier nsv; 408 if (JvmtiExport::can_post_interpreter_events() && thread->is_interp_only_mode()) { 409 entry_point = method->interpreter_entry(); 410 } else { 411 // Since the call stub sets up like the interpreter we call the from_interpreted_entry 412 // so we can go compiled via a i2c. 413 entry_point = method->from_interpreted_entry(); 414 #if INCLUDE_JVMCI 415 // Gets the alternative target (if any) that should be called 416 Handle alternative_target = args->alternative_target(); 417 if (!alternative_target.is_null()) { 418 // Must extract verified entry point from HotSpotNmethod after VM to Java 419 // transition in JavaCallWrapper constructor so that it is safe with 420 // respect to nmethod sweeping. 421 address verified_entry_point = (address) HotSpotJVMCI::InstalledCode::entryPoint(nullptr, alternative_target()); 422 if (verified_entry_point != nullptr) { 423 thread->set_jvmci_alternate_call_target(verified_entry_point); 424 entry_point = method->adapter()->get_i2c_entry(); 425 } 426 } 427 #endif 428 } 429 } 430 StubRoutines::call_stub()( 431 (address)&link, 432 // (intptr_t*)&(result->_value), // see NOTE above (compiler problem) 433 result_val_address, // see NOTE above (compiler problem) 434 result_type, 435 method(), 436 entry_point, 437 parameter_address, 438 args->size_of_parameters(), 439 CHECK 440 ); 441 442 result = link.result(); // circumvent MS C++ 5.0 compiler bug (result is clobbered across call) 443 // Preserve oop return value across possible gc points 444 if (oop_result_flag) { 445 thread->set_vm_result(result->get_oop()); 446 } 447 } 448 } // Exit JavaCallWrapper (can block - potential return oop must be preserved) 449 450 // Check if a thread stop or suspend should be executed 451 // The following assert was not realistic. Thread.stop can set that bit at any moment. 452 //assert(!thread->has_special_runtime_exit_condition(), "no async. exceptions should be installed"); 453 454 // Restore possible oop return 455 if (oop_result_flag) { 456 result->set_oop(thread->vm_result()); 457 thread->set_vm_result(nullptr); 458 JNIHandles::destroy_local(value_buffer); 459 } 460 } 461 462 463 //-------------------------------------------------------------------------------------- 464 // Implementation of JavaCallArguments 465 466 inline bool is_value_state_indirect_oop(uint state) { 467 assert(state != JavaCallArguments::value_state_oop, 468 "Checking for handles after removal"); 469 assert(state < JavaCallArguments::value_state_limit, 470 "Invalid value state %u", state); 471 return state != JavaCallArguments::value_state_primitive; 472 } 473 474 inline oop resolve_indirect_oop(intptr_t value, uint state) { 475 switch (state) { 476 case JavaCallArguments::value_state_handle: 477 { 478 oop* ptr = reinterpret_cast<oop*>(value); 479 return Handle::raw_resolve(ptr); 480 } 481 482 case JavaCallArguments::value_state_jobject: 483 { 484 jobject obj = reinterpret_cast<jobject>(value); 485 return JNIHandles::resolve(obj); 486 } 487 488 default: 489 ShouldNotReachHere(); 490 return nullptr; 491 } 492 } 493 494 intptr_t* JavaCallArguments::parameters() { 495 // First convert all handles to oops 496 for(int i = 0; i < _size; i++) { 497 uint state = _value_state[i]; 498 assert(state != value_state_oop, "Multiple handle conversions"); 499 if (is_value_state_indirect_oop(state)) { 500 oop obj = resolve_indirect_oop(_value[i], state); 501 _value[i] = cast_from_oop<intptr_t>(obj); 502 _value_state[i] = value_state_oop; 503 } 504 } 505 // Return argument vector 506 return _value; 507 } 508 509 510 class SignatureChekker : public SignatureIterator { 511 private: 512 int _pos; 513 BasicType _return_type; 514 u_char* _value_state; 515 intptr_t* _value; 516 517 public: 518 SignatureChekker(Symbol* signature, 519 BasicType return_type, 520 bool is_static, 521 u_char* value_state, 522 intptr_t* value) : 523 SignatureIterator(signature), 524 _pos(0), 525 _return_type(return_type), 526 _value_state(value_state), 527 _value(value) 528 { 529 if (!is_static) { 530 check_value(true); // Receiver must be an oop 531 } 532 do_parameters_on(this); 533 check_return_type(return_type); 534 } 535 536 private: 537 void check_value(bool is_reference) { 538 uint state = _value_state[_pos++]; 539 if (is_reference) { 540 guarantee(is_value_state_indirect_oop(state), 541 "signature does not match pushed arguments: %u at %d", 542 state, _pos - 1); 543 } else { 544 guarantee(state == JavaCallArguments::value_state_primitive, 545 "signature does not match pushed arguments: %u at %d", 546 state, _pos - 1); 547 } 548 } 549 550 void check_return_type(BasicType t) { 551 guarantee(t == _return_type, "return type does not match"); 552 } 553 554 void check_single_word() { 555 check_value(false); 556 } 557 558 void check_double_word() { 559 check_value(false); 560 check_value(false); 561 } 562 563 void check_reference() { 564 intptr_t v = _value[_pos]; 565 if (v != 0) { 566 // v is a "handle" referring to an oop, cast to integral type. 567 // There shouldn't be any handles in very low memory. 568 guarantee((size_t)v >= os::vm_page_size(), 569 "Bad JNI oop argument %d: " PTR_FORMAT, _pos, v); 570 // Verify the pointee. 571 oop vv = resolve_indirect_oop(v, _value_state[_pos]); 572 guarantee(oopDesc::is_oop_or_null(vv, true), 573 "Bad JNI oop argument %d: " PTR_FORMAT " -> " PTR_FORMAT, 574 _pos, v, p2i(vv)); 575 } 576 577 check_value(true); // Verify value state. 578 } 579 580 friend class SignatureIterator; // so do_parameters_on can call do_type 581 void do_type(BasicType type) { 582 switch (type) { 583 case T_BYTE: 584 case T_BOOLEAN: 585 case T_CHAR: 586 case T_SHORT: 587 case T_INT: 588 case T_FLOAT: // this one also 589 check_single_word(); break; 590 case T_LONG: 591 case T_DOUBLE: 592 check_double_word(); break; 593 case T_ARRAY: 594 case T_OBJECT: 595 check_reference(); break; 596 default: 597 ShouldNotReachHere(); 598 } 599 } 600 }; 601 602 603 void JavaCallArguments::verify(const methodHandle& method, BasicType return_type) { 604 guarantee(method->size_of_parameters() == size_of_parameters(), "wrong no. of arguments pushed"); 605 606 // Treat T_OBJECT and T_ARRAY as the same 607 if (return_type == T_ARRAY) return_type = T_OBJECT; 608 609 // Check that oop information is correct 610 Symbol* signature = method->signature(); 611 612 SignatureChekker sc(signature, 613 return_type, 614 method->is_static(), 615 _value_state, 616 _value); 617 }