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8203028: Simplify reference processing in light of JDK-8175797

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Removed special handling of Reference.next

Reviewed-by: tschatzl, sjohanss, mchung
This commit is contained in:
Kim Barrett 2018-05-26 03:11:50 -04:00
parent ace1b8a4c9
commit 6c20824cda
9 changed files with 197 additions and 210 deletions
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13
src/hotspot/share/gc/parallel/psCompactionManager.cpp
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@ -200,16 +200,9 @@ static void oop_pc_follow_contents_specialized(InstanceRefKlass* klass, oop obj,
cm->mark_and_push(referent_addr);
}
}
T* next_addr = (T*)java_lang_ref_Reference::next_addr_raw(obj);
// Treat discovered as normal oop, if ref is not "active",
// i.e. if next is non-NULL.
T next_oop = RawAccess<>::oop_load(next_addr);
if (!CompressedOops::is_null(next_oop)) { // i.e. ref is not "active"
T* discovered_addr = (T*)java_lang_ref_Reference::discovered_addr_raw(obj);
log_develop_trace(gc, ref)(" Process discovered as normal " PTR_FORMAT, p2i(discovered_addr));
cm->mark_and_push(discovered_addr);
}
cm->mark_and_push(next_addr);
// Treat discovered as normal oop.
T* discovered_addr = (T*)java_lang_ref_Reference::discovered_addr_raw(obj);
cm->mark_and_push(discovered_addr);
klass->InstanceKlass::oop_pc_follow_contents(obj, cm);
}