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src/hotspot/share/oops/klass.inline.hpp

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34 // This loads the klass's holder as a phantom. This is useful when a weak Klass
35 // pointer has been "peeked" and then must be kept alive before it may
36 // be used safely.  All uses of klass_holder need to apply the appropriate barriers,
37 // except during GC.
38 inline oop Klass::klass_holder() const {
39   return class_loader_data()->holder_phantom();
40 }
41 
42 inline bool Klass::is_non_strong_hidden() const {
43   return access_flags().is_hidden_class() &&
44          class_loader_data()->has_class_mirror_holder();
45 }
46 
47 // Iff the class loader (or mirror for non-strong hidden classes) is alive the
48 // Klass is considered alive. This is safe to call before the CLD is marked as
49 // unloading, and hence during concurrent class unloading.
50 inline bool Klass::is_loader_alive() const {
51   return class_loader_data()->is_alive();
52 }
53 




54 inline oop Klass::java_mirror() const {
55   return _java_mirror.resolve();
56 }
57 
58 inline klassVtable Klass::vtable() const {
59   return klassVtable(const_cast<Klass*>(this), start_of_vtable(), vtable_length() / vtableEntry::size());
60 }
61 
62 inline oop Klass::class_loader() const {
63   return class_loader_data()->class_loader();
64 }
65 
66 inline vtableEntry* Klass::start_of_vtable() const {
67   return (vtableEntry*) ((address)this + in_bytes(vtable_start_offset()));
68 }
69 
70 inline ByteSize Klass::vtable_start_offset() {
71   return in_ByteSize(InstanceKlass::header_size() * wordSize);
72 }
73 

34 // This loads the klass's holder as a phantom. This is useful when a weak Klass
35 // pointer has been "peeked" and then must be kept alive before it may
36 // be used safely.  All uses of klass_holder need to apply the appropriate barriers,
37 // except during GC.
38 inline oop Klass::klass_holder() const {
39   return class_loader_data()->holder_phantom();
40 }
41 
42 inline bool Klass::is_non_strong_hidden() const {
43   return access_flags().is_hidden_class() &&
44          class_loader_data()->has_class_mirror_holder();
45 }
46 
47 // Iff the class loader (or mirror for non-strong hidden classes) is alive the
48 // Klass is considered alive. This is safe to call before the CLD is marked as
49 // unloading, and hence during concurrent class unloading.
50 inline bool Klass::is_loader_alive() const {
51   return class_loader_data()->is_alive();
52 }
53 
54 inline void Klass::set_prototype_header(markWord header) {
55   _prototype_header = header;
56 }
57 
58 inline oop Klass::java_mirror() const {
59   return _java_mirror.resolve();
60 }
61 
62 inline klassVtable Klass::vtable() const {
63   return klassVtable(const_cast<Klass*>(this), start_of_vtable(), vtable_length() / vtableEntry::size());
64 }
65 
66 inline oop Klass::class_loader() const {
67   return class_loader_data()->class_loader();
68 }
69 
70 inline vtableEntry* Klass::start_of_vtable() const {
71   return (vtableEntry*) ((address)this + in_bytes(vtable_start_offset()));
72 }
73 
74 inline ByteSize Klass::vtable_start_offset() {
75   return in_ByteSize(InstanceKlass::header_size() * wordSize);
76 }
77 
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