46 }
47
48 template <bool nv, typename T, class OopClosureType, class Contains>
49 void InstanceRefKlass::do_next(oop obj, OopClosureType* closure, Contains& contains) {
50 T* next_addr = (T*)java_lang_ref_Reference::next_addr_raw(obj);
51 if (contains(next_addr)) {
52 Devirtualizer<nv>::do_oop(closure, next_addr);
53 }
54 }
55
56 template <bool nv, typename T, class OopClosureType, class Contains>
57 void InstanceRefKlass::do_discovered(oop obj, OopClosureType* closure, Contains& contains) {
58 T* discovered_addr = (T*)java_lang_ref_Reference::discovered_addr_raw(obj);
59 if (contains(discovered_addr)) {
60 Devirtualizer<nv>::do_oop(closure, discovered_addr);
61 }
62 }
63
64 template <typename T, class OopClosureType>
65 bool InstanceRefKlass::try_discover(oop obj, ReferenceType type, OopClosureType* closure) {
66 ReferenceProcessor* rp = closure->ref_processor();
67 if (rp != NULL) {
68 T referent_oop = RawAccess<>::oop_load((T*)java_lang_ref_Reference::referent_addr_raw(obj));
69 if (!CompressedOops::is_null(referent_oop)) {
70 oop referent = CompressedOops::decode_not_null(referent_oop);
71 if (!referent->is_gc_marked()) {
72 // Only try to discover if not yet marked.
73 return rp->discover_reference(obj, type);
74 }
75 }
76 }
77 return false;
78 }
79
80 template <bool nv, typename T, class OopClosureType, class Contains>
81 void InstanceRefKlass::oop_oop_iterate_discovery(oop obj, ReferenceType type, OopClosureType* closure, Contains& contains) {
82 // Try to discover reference and return if it succeeds.
83 if (try_discover<T>(obj, type, closure)) {
84 return;
85 }
86
87 // Treat referent as normal oop.
88 do_referent<nv, T>(obj, closure, contains);
89
90 // Treat discovered as normal oop, if ref is not "active" (next non-NULL).
91 T next_oop = RawAccess<>::oop_load((T*)java_lang_ref_Reference::next_addr_raw(obj));
92 if (!CompressedOops::is_null(next_oop)) {
93 do_discovered<nv, T>(obj, closure, contains);
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46 }
47
48 template <bool nv, typename T, class OopClosureType, class Contains>
49 void InstanceRefKlass::do_next(oop obj, OopClosureType* closure, Contains& contains) {
50 T* next_addr = (T*)java_lang_ref_Reference::next_addr_raw(obj);
51 if (contains(next_addr)) {
52 Devirtualizer<nv>::do_oop(closure, next_addr);
53 }
54 }
55
56 template <bool nv, typename T, class OopClosureType, class Contains>
57 void InstanceRefKlass::do_discovered(oop obj, OopClosureType* closure, Contains& contains) {
58 T* discovered_addr = (T*)java_lang_ref_Reference::discovered_addr_raw(obj);
59 if (contains(discovered_addr)) {
60 Devirtualizer<nv>::do_oop(closure, discovered_addr);
61 }
62 }
63
64 template <typename T, class OopClosureType>
65 bool InstanceRefKlass::try_discover(oop obj, ReferenceType type, OopClosureType* closure) {
66 ReferenceDiscoverer* rd = closure->ref_discoverer();
67 if (rd != NULL) {
68 T referent_oop = RawAccess<>::oop_load((T*)java_lang_ref_Reference::referent_addr_raw(obj));
69 if (!CompressedOops::is_null(referent_oop)) {
70 oop referent = CompressedOops::decode_not_null(referent_oop);
71 if (!referent->is_gc_marked()) {
72 // Only try to discover if not yet marked.
73 return rd->discover_reference(obj, type);
74 }
75 }
76 }
77 return false;
78 }
79
80 template <bool nv, typename T, class OopClosureType, class Contains>
81 void InstanceRefKlass::oop_oop_iterate_discovery(oop obj, ReferenceType type, OopClosureType* closure, Contains& contains) {
82 // Try to discover reference and return if it succeeds.
83 if (try_discover<T>(obj, type, closure)) {
84 return;
85 }
86
87 // Treat referent as normal oop.
88 do_referent<nv, T>(obj, closure, contains);
89
90 // Treat discovered as normal oop, if ref is not "active" (next non-NULL).
91 T next_oop = RawAccess<>::oop_load((T*)java_lang_ref_Reference::next_addr_raw(obj));
92 if (!CompressedOops::is_null(next_oop)) {
93 do_discovered<nv, T>(obj, closure, contains);
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