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7177409: Perf regression in JVM_GetClassDeclaredFields after generic signature changes

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In fieldDescriptor::generic_signature() returns NULL immediately if the field has no generic signature.

Reviewed-by: dholmes, coleenp, jcoomes
This commit is contained in:
Jiangli Zhou 2012-06-22 14:00:39 -04:00
parent 8b20e7af53
commit 1a35ed23d9
3 changed files with 6 additions and 1 deletions
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4
hotspot/src/share/vm/runtime/fieldDescriptor.cpp
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@ -39,6 +39,10 @@ oop fieldDescriptor::loader() const {
}
Symbol* fieldDescriptor::generic_signature() const {
if (!has_generic_signature()) {
return NULL;
}
int idx = 0;
instanceKlass* ik = instanceKlass::cast(field_holder());
for (AllFieldStream fs(ik); !fs.done(); fs.next()) {