29 #include "code/debugInfoRec.hpp"
30 #include "gc/shared/collectedHeap.inline.hpp"
31 #include "gc/shared/gcLocker.hpp"
32 #include "gc/shared/generation.hpp"
33 #include "interpreter/bytecodeStream.hpp"
34 #include "interpreter/bytecodeTracer.hpp"
35 #include "interpreter/bytecodes.hpp"
36 #include "interpreter/interpreter.hpp"
37 #include "interpreter/oopMapCache.hpp"
38 #include "memory/heapInspection.hpp"
39 #include "memory/metadataFactory.hpp"
40 #include "memory/metaspaceShared.hpp"
41 #include "memory/oopFactory.hpp"
42 #include "memory/resourceArea.hpp"
43 #include "oops/constMethod.hpp"
44 #include "oops/method.hpp"
45 #include "oops/methodData.hpp"
46 #include "oops/objArrayOop.inline.hpp"
47 #include "oops/oop.inline.hpp"
48 #include "oops/symbol.hpp"
49 #include "prims/jvmtiExport.hpp"
50 #include "prims/methodHandles.hpp"
51 #include "prims/nativeLookup.hpp"
52 #include "runtime/arguments.hpp"
53 #include "runtime/compilationPolicy.hpp"
54 #include "runtime/frame.inline.hpp"
55 #include "runtime/handles.inline.hpp"
56 #include "runtime/init.hpp"
57 #include "runtime/orderAccess.inline.hpp"
58 #include "runtime/relocator.hpp"
59 #include "runtime/sharedRuntime.hpp"
60 #include "runtime/signature.hpp"
61 #include "utilities/quickSort.hpp"
62 #include "utilities/xmlstream.hpp"
63
64 // Implementation of Method
65
66 Method* Method::allocate(ClassLoaderData* loader_data,
67 int byte_code_size,
68 AccessFlags access_flags,
450 // => nothing to do (keep this method around for future use)
451 }
452
453
454 int Method::extra_stack_words() {
455 // not an inline function, to avoid a header dependency on Interpreter
456 return extra_stack_entries() * Interpreter::stackElementSize;
457 }
458
459
460 void Method::compute_size_of_parameters(Thread *thread) {
461 ArgumentSizeComputer asc(signature());
462 set_size_of_parameters(asc.size() + (is_static() ? 0 : 1));
463 }
464
465 BasicType Method::result_type() const {
466 ResultTypeFinder rtf(signature());
467 return rtf.type();
468 }
469
470
471 bool Method::is_empty_method() const {
472 return code_size() == 1
473 && *code_base() == Bytecodes::_return;
474 }
475
476
477 bool Method::is_vanilla_constructor() const {
478 // Returns true if this method is a vanilla constructor, i.e. an "<init>" "()V" method
479 // which only calls the superclass vanilla constructor and possibly does stores of
480 // zero constants to local fields:
481 //
482 // aload_0
483 // invokespecial
484 // indexbyte1
485 // indexbyte2
486 //
487 // followed by an (optional) sequence of:
488 //
489 // aload_0
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29 #include "code/debugInfoRec.hpp"
30 #include "gc/shared/collectedHeap.inline.hpp"
31 #include "gc/shared/gcLocker.hpp"
32 #include "gc/shared/generation.hpp"
33 #include "interpreter/bytecodeStream.hpp"
34 #include "interpreter/bytecodeTracer.hpp"
35 #include "interpreter/bytecodes.hpp"
36 #include "interpreter/interpreter.hpp"
37 #include "interpreter/oopMapCache.hpp"
38 #include "memory/heapInspection.hpp"
39 #include "memory/metadataFactory.hpp"
40 #include "memory/metaspaceShared.hpp"
41 #include "memory/oopFactory.hpp"
42 #include "memory/resourceArea.hpp"
43 #include "oops/constMethod.hpp"
44 #include "oops/method.hpp"
45 #include "oops/methodData.hpp"
46 #include "oops/objArrayOop.inline.hpp"
47 #include "oops/oop.inline.hpp"
48 #include "oops/symbol.hpp"
49 #include "oops/valueKlass.hpp"
50 #include "prims/jvmtiExport.hpp"
51 #include "prims/methodHandles.hpp"
52 #include "prims/nativeLookup.hpp"
53 #include "runtime/arguments.hpp"
54 #include "runtime/compilationPolicy.hpp"
55 #include "runtime/frame.inline.hpp"
56 #include "runtime/handles.inline.hpp"
57 #include "runtime/init.hpp"
58 #include "runtime/orderAccess.inline.hpp"
59 #include "runtime/relocator.hpp"
60 #include "runtime/sharedRuntime.hpp"
61 #include "runtime/signature.hpp"
62 #include "utilities/quickSort.hpp"
63 #include "utilities/xmlstream.hpp"
64
65 // Implementation of Method
66
67 Method* Method::allocate(ClassLoaderData* loader_data,
68 int byte_code_size,
69 AccessFlags access_flags,
451 // => nothing to do (keep this method around for future use)
452 }
453
454
455 int Method::extra_stack_words() {
456 // not an inline function, to avoid a header dependency on Interpreter
457 return extra_stack_entries() * Interpreter::stackElementSize;
458 }
459
460
461 void Method::compute_size_of_parameters(Thread *thread) {
462 ArgumentSizeComputer asc(signature());
463 set_size_of_parameters(asc.size() + (is_static() ? 0 : 1));
464 }
465
466 BasicType Method::result_type() const {
467 ResultTypeFinder rtf(signature());
468 return rtf.type();
469 }
470
471 #ifdef ASSERT
472 // ValueKlass the method is declared to return. This must not
473 // safepoint as it is called with references live on the stack at
474 // locations the GC is unaware of.
475 ValueKlass* Method::returned_value_type(Thread* thread) const {
476 assert(is_returning_vt(), "method return type should be value type");
477 SignatureStream ss(signature());
478 while (!ss.at_return_type()) {
479 ss.next();
480 }
481 Handle class_loader(thread, method_holder()->class_loader());
482 Handle protection_domain(thread, method_holder()->protection_domain());
483 Klass* k = NULL;
484 {
485 NoSafepointVerifier nsv;
486 k = ss.as_klass(class_loader, protection_domain, SignatureStream::ReturnNull, thread);
487 }
488 assert(k != NULL && !thread->has_pending_exception(), "can't resolve klass");
489 return ValueKlass::cast(k);
490 }
491 #endif
492
493 bool Method::is_empty_method() const {
494 return code_size() == 1
495 && *code_base() == Bytecodes::_return;
496 }
497
498
499 bool Method::is_vanilla_constructor() const {
500 // Returns true if this method is a vanilla constructor, i.e. an "<init>" "()V" method
501 // which only calls the superclass vanilla constructor and possibly does stores of
502 // zero constants to local fields:
503 //
504 // aload_0
505 // invokespecial
506 // indexbyte1
507 // indexbyte2
508 //
509 // followed by an (optional) sequence of:
510 //
511 // aload_0
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