// "Normal" instantiation is preceeded by a MetaspaceObj allocation
// which zeros out memory - calloc equivalent.
// The constructor is also used from init_self_patching_vtbl_list,
// which doesn't zero out the memory before calling the constructor.
// Need to set the _java_mirror field explicitly to not hit an assert that the field
// should be NULL before setting it.
Klass::Klass() : _prototype_header(markOopDesc::prototype()),
_shared_class_path_index(-1),
_java_mirror(NULL) {
_primary_supers[0] = this;
set_super_check_offset(in_bytes(primary_supers_offset()));
}
Klass::Klass() {
Klass* k = this;
{ // Preinitialize supertype information.
// A later call to initialize_supers() may update these settings:
set_super(NULL);
for (juint i = 0; i < Klass::primary_super_limit(); i++) {
_primary_supers[i] = NULL;
}
set_secondary_supers(NULL);
_primary_supers[0] = k;
set_super_check_offset(in_bytes(primary_supers_offset()));
}
set_java_mirror(NULL);
set_modifier_flags(0);
set_layout_helper(Klass::_lh_neutral_value);
set_name(NULL);
AccessFlags af;
af.set_flags(0);
set_access_flags(af);
set_subklass(NULL);
set_next_sibling(NULL);
set_next_link(NULL);
set_alloc_count(0);
TRACE_SET_KLASS_TRACE_ID(this, 0);
set_prototype_header(markOopDesc::prototype());
set_biased_lock_revocation_count(0);
set_last_biased_lock_bulk_revocation_time(0);
// The klass doesn't have any references at this point.
clear_modified_oops();
clear_accumulated_modified_oops();
}
klassOop Klass::base_create_klass_oop(KlassHandle& klass, int size,
const Klass_vtbl& vtbl, TRAPS) {
size = align_object_size(size);
// allocate and initialize vtable
Klass* kl = (Klass*) vtbl.allocate_permanent(klass, size, CHECK_NULL);
klassOop k = kl->as_klassOop();
{ // Preinitialize supertype information.
// A later call to initialize_supers() may update these settings:
kl->set_super(NULL);
for (juint i = 0; i < Klass::primary_super_limit(); i++) {
kl->_primary_supers[i] = NULL;
}
kl->set_secondary_supers(NULL);
oop_store_without_check((oop*) &kl->_primary_supers[0], k);
kl->set_super_check_offset(in_bytes(primary_supers_offset()));
}
kl->set_java_mirror(NULL);
kl->set_modifier_flags(0);
kl->set_layout_helper(Klass::_lh_neutral_value);
kl->set_name(NULL);
AccessFlags af;
af.set_flags(0);
kl->set_access_flags(af);
kl->set_subklass(NULL);
kl->set_next_sibling(NULL);
kl->set_alloc_count(0);
kl->set_alloc_size(0);
TRACE_SET_KLASS_TRACE_ID(kl, 0);
kl->set_prototype_header(markOopDesc::prototype());
kl->set_biased_lock_revocation_count(0);
kl->set_last_biased_lock_bulk_revocation_time(0);
return k;
}
