38 template <bool nv, typename T, class OopClosureType, class Contains>
39 void InstanceRefKlass::do_referent(oop obj, OopClosureType* closure, Contains& contains) {
40 T* referent_addr = (T*)java_lang_ref_Reference::referent_addr(obj);
41 if (contains(referent_addr)) {
42 Devirtualizer<nv>::do_oop(closure, referent_addr);
43 }
44 }
45
46 template <bool nv, typename T, class OopClosureType, class Contains>
47 void InstanceRefKlass::do_next(oop obj, OopClosureType* closure, Contains& contains) {
48 T* next_addr = (T*)java_lang_ref_Reference::next_addr(obj);
49 if (contains(next_addr)) {
50 Devirtualizer<nv>::do_oop(closure, next_addr);
51 }
52 }
53
54 template <bool nv, typename T, class OopClosureType, class Contains>
55 void InstanceRefKlass::do_discovered(oop obj, OopClosureType* closure, Contains& contains) {
56 T* discovered_addr = (T*)java_lang_ref_Reference::discovered_addr(obj);
57 if (contains(discovered_addr)) {
58 log_develop_trace(gc, ref)(" Process discovered as normal " PTR_FORMAT, p2i(discovered_addr));
59 Devirtualizer<nv>::do_oop(closure, discovered_addr);
60 }
61 }
62
63 template <typename T, class OopClosureType>
64 bool InstanceRefKlass::try_discover(oop obj, ReferenceType type, OopClosureType* closure) {
65 ReferenceProcessor* rp = closure->ref_processor();
66 if (rp != NULL) {
67 T referent_oop = oopDesc::load_heap_oop((T*)java_lang_ref_Reference::referent_addr(obj));
68 if (!oopDesc::is_null(referent_oop)) {
69 oop referent = oopDesc::decode_heap_oop_not_null(referent_oop);
70 if (!referent->is_gc_marked()) {
71 // Only try to discover if not yet marked.
72 return rp->discover_reference(obj, type);
73 }
74 }
75 }
76 return false;
77 }
78
91 }
92
93 // Treat referent as normal oop.
94 do_referent<nv, T>(obj, closure, contains);
95
96 // Treat discovered as normal oop, if ref is not "active" (next non-NULL).
97 T next_oop = oopDesc::load_heap_oop((T*)java_lang_ref_Reference::next_addr(obj));
98 if (!oopDesc::is_null(next_oop)) {
99 do_discovered<nv, T>(obj, closure, contains);
100 }
101
102 // Treat next as normal oop.
103 do_next<nv, T>(obj, closure, contains);
104 }
105
106 template <bool nv, typename T, class OopClosureType, class Contains>
107 void InstanceRefKlass::oop_oop_iterate_fields(oop obj, OopClosureType* closure, Contains& contains) {
108 do_referent<nv, T>(obj, closure, contains);
109 do_discovered<nv, T>(obj, closure, contains);
110 do_next<nv, T>(obj, closure, contains);
111 trace_reference_gc("InstanceRefKlass::oop_oop_iterate_fields()",
112 obj,
113 (T*)java_lang_ref_Reference::referent_addr(obj),
114 (T*)java_lang_ref_Reference::next_addr(obj),
115 (T*)java_lang_ref_Reference::discovered_addr(obj));
116 }
117
118 template <bool nv, typename T, class OopClosureType, class Contains>
119 void InstanceRefKlass::oop_oop_iterate_ref_processing_specialized(oop obj, OopClosureType* closure, Contains& contains) {
120 switch (closure->reference_iteration_mode()) {
121 case ExtendedOopClosure::DO_DISCOVERY:
122 oop_oop_iterate_discovery<nv, T>(obj, reference_type(), closure, contains);
123 break;
124 case ExtendedOopClosure::DO_FIELDS:
125 oop_oop_iterate_fields<nv, T>(obj, closure, contains);
126 break;
127 default:
128 ShouldNotReachHere();
129 }
130 }
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38 template <bool nv, typename T, class OopClosureType, class Contains>
39 void InstanceRefKlass::do_referent(oop obj, OopClosureType* closure, Contains& contains) {
40 T* referent_addr = (T*)java_lang_ref_Reference::referent_addr(obj);
41 if (contains(referent_addr)) {
42 Devirtualizer<nv>::do_oop(closure, referent_addr);
43 }
44 }
45
46 template <bool nv, typename T, class OopClosureType, class Contains>
47 void InstanceRefKlass::do_next(oop obj, OopClosureType* closure, Contains& contains) {
48 T* next_addr = (T*)java_lang_ref_Reference::next_addr(obj);
49 if (contains(next_addr)) {
50 Devirtualizer<nv>::do_oop(closure, next_addr);
51 }
52 }
53
54 template <bool nv, typename T, class OopClosureType, class Contains>
55 void InstanceRefKlass::do_discovered(oop obj, OopClosureType* closure, Contains& contains) {
56 T* discovered_addr = (T*)java_lang_ref_Reference::discovered_addr(obj);
57 if (contains(discovered_addr)) {
58 Devirtualizer<nv>::do_oop(closure, discovered_addr);
59 }
60 }
61
62 template <typename T, class OopClosureType>
63 bool InstanceRefKlass::try_discover(oop obj, ReferenceType type, OopClosureType* closure) {
64 ReferenceProcessor* rp = closure->ref_processor();
65 if (rp != NULL) {
66 T referent_oop = oopDesc::load_heap_oop((T*)java_lang_ref_Reference::referent_addr(obj));
67 if (!oopDesc::is_null(referent_oop)) {
68 oop referent = oopDesc::decode_heap_oop_not_null(referent_oop);
69 if (!referent->is_gc_marked()) {
70 // Only try to discover if not yet marked.
71 return rp->discover_reference(obj, type);
72 }
73 }
74 }
75 return false;
76 }
77
90 }
91
92 // Treat referent as normal oop.
93 do_referent<nv, T>(obj, closure, contains);
94
95 // Treat discovered as normal oop, if ref is not "active" (next non-NULL).
96 T next_oop = oopDesc::load_heap_oop((T*)java_lang_ref_Reference::next_addr(obj));
97 if (!oopDesc::is_null(next_oop)) {
98 do_discovered<nv, T>(obj, closure, contains);
99 }
100
101 // Treat next as normal oop.
102 do_next<nv, T>(obj, closure, contains);
103 }
104
105 template <bool nv, typename T, class OopClosureType, class Contains>
106 void InstanceRefKlass::oop_oop_iterate_fields(oop obj, OopClosureType* closure, Contains& contains) {
107 do_referent<nv, T>(obj, closure, contains);
108 do_discovered<nv, T>(obj, closure, contains);
109 do_next<nv, T>(obj, closure, contains);
110
111 trace_reference_gc("InstanceRefKlass::oop_oop_iterate_fields()",
112 obj,
113 (T*)java_lang_ref_Reference::referent_addr(obj),
114 (T*)java_lang_ref_Reference::next_addr(obj),
115 (T*)java_lang_ref_Reference::discovered_addr(obj));
116 }
117
118 template <bool nv, typename T, class OopClosureType, class Contains>
119 void InstanceRefKlass::oop_oop_iterate_ref_processing_specialized(oop obj, OopClosureType* closure, Contains& contains) {
120 switch (closure->reference_iteration_mode()) {
121 case ExtendedOopClosure::DO_DISCOVERY:
122 oop_oop_iterate_discovery<nv, T>(obj, reference_type(), closure, contains);
123 break;
124 case ExtendedOopClosure::DO_FIELDS:
125 oop_oop_iterate_fields<nv, T>(obj, closure, contains);
126 break;
127 default:
128 ShouldNotReachHere();
129 }
130 }
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