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8244550: Unsafe::allocateInstance does redundant transitions

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Reviewed-by: coleenp, mchung, dholmes
This commit is contained in:
Claes Redestad 2020-05-07 14:09:20 +02:00
parent 62bf2d07e7
commit c2780c9556
16 changed files with 40 additions and 31 deletions
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12
src/hotspot/share/oops/instanceKlass.inline.hpp
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@ -157,4 +157,16 @@ ALWAYSINLINE void InstanceKlass::oop_oop_iterate_bounded(oop obj, OopClosureType
oop_oop_iterate_oop_maps_bounded<T>(obj, closure, mr);
}
inline instanceOop InstanceKlass::allocate_instance(oop java_class, TRAPS) {
Klass* k = java_lang_Class::as_Klass(java_class);
if (k == NULL) {
ResourceMark rm(THREAD);
THROW_(vmSymbols::java_lang_InstantiationException(), NULL);
}
InstanceKlass* ik = cast(k);
ik->check_valid_for_instantiation(false, CHECK_NULL);
ik->initialize(CHECK_NULL);
return ik->allocate_instance(THREAD);
}
#endif // SHARE_OOPS_INSTANCEKLASS_INLINE_HPP