8014288: perf regression in nashorn JDK-8008448.js test after 8008511 changes

The fix of perf regression is to use method_idnum() for direct indexing into NMT

Reviewed-by: twisti, kvn, coleenp, dholmes
This commit is contained in:
Serguei Spitsyn 2013-05-23 23:04:33 -07:00 committed by Serguei Spitsyn
parent bd53fa8370
commit b2e43ed612
4 changed files with 35 additions and 32 deletions

View file

@ -2754,15 +2754,28 @@ nmethod* InstanceKlass::lookup_osr_nmethod(const Method* m, int bci, int comp_le
return NULL;
}
void InstanceKlass::add_member_name(Handle mem_name) {
void InstanceKlass::add_member_name(int index, Handle mem_name) {
jweak mem_name_wref = JNIHandles::make_weak_global(mem_name);
MutexLocker ml(MemberNameTable_lock);
assert(0 <= index && index < idnum_allocated_count(), "index is out of bounds");
DEBUG_ONLY(No_Safepoint_Verifier nsv);
if (_member_names == NULL) {
_member_names = new (ResourceObj::C_HEAP, mtClass) MemberNameTable();
_member_names = new (ResourceObj::C_HEAP, mtClass) MemberNameTable(idnum_allocated_count());
}
_member_names->add_member_name(mem_name_wref);
_member_names->add_member_name(index, mem_name_wref);
}
oop InstanceKlass::get_member_name(int index) {
MutexLocker ml(MemberNameTable_lock);
assert(0 <= index && index < idnum_allocated_count(), "index is out of bounds");
DEBUG_ONLY(No_Safepoint_Verifier nsv);
if (_member_names == NULL) {
return NULL;
}
oop mem_name =_member_names->get_member_name(index);
return mem_name;
}
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