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7168280: Eliminate the generic signature index slot from field array for field without generic signature

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Only allocate the generic signature index slot in the field array for field with generic signature attribute.

Reviewed-by: coleenp, dlong
This commit is contained in:
Jiangli Zhou 2012-05-21 14:10:35 -04:00
parent 57692966b7
commit 31e63d5a3a
12 changed files with 199 additions and 53 deletions
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15
hotspot/src/share/vm/runtime/fieldDescriptor.cpp
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@ -28,6 +28,7 @@
#include "memory/resourceArea.hpp"
#include "memory/universe.inline.hpp"
#include "oops/instanceKlass.hpp"
#include "oops/fieldStreams.hpp"
#include "runtime/fieldDescriptor.hpp"
#include "runtime/handles.inline.hpp"
#include "runtime/signature.hpp"
@ -37,6 +38,20 @@ oop fieldDescriptor::loader() const {
return instanceKlass::cast(_cp->pool_holder())->class_loader();
}
Symbol* fieldDescriptor::generic_signature() const {
int idx = 0;
instanceKlass* ik = instanceKlass::cast(field_holder());
for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
if (idx == _index) {
return fs.generic_signature();
} else {
idx ++;
}
}
assert(false, "should never happen");
return NULL;
}
typeArrayOop fieldDescriptor::annotations() const {
instanceKlass* ik = instanceKlass::cast(field_holder());
objArrayOop md = ik->fields_annotations();