85 typedef PSRootsClosure</*promote_immediately=*/false> PSScavengeRootsClosure;
86 typedef PSRootsClosure</*promote_immediately=*/true> PSPromoteRootsClosure;
87
88 // Scavenges a single oop in a Klass.
89 class PSScavengeFromKlassClosure: public OopClosure {
90 private:
91 PSPromotionManager* _pm;
92 // Used to redirty a scanned klass if it has oops
93 // pointing to the young generation after being scanned.
94 Klass* _scanned_klass;
95 public:
96 PSScavengeFromKlassClosure(PSPromotionManager* pm) : _pm(pm), _scanned_klass(NULL) { }
97 void do_oop(narrowOop* p) { ShouldNotReachHere(); }
98 void do_oop(oop* p) {
99 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
100 assert(!psh->is_in_reserved(p), "GC barrier needed");
101 if (PSScavenge::should_scavenge(p)) {
102 assert(PSScavenge::should_scavenge(p, true), "revisiting object?");
103
104 oop o = *p;
105 oop new_obj;
106 if (o->is_forwarded()) {
107 new_obj = o->forwardee();
108 } else {
109 new_obj = _pm->copy_to_survivor_space</*promote_immediately=*/false>(o);
110 }
111 oopDesc::encode_store_heap_oop_not_null(p, new_obj);
112
113 if (PSScavenge::is_obj_in_young(new_obj)) {
114 do_klass_barrier();
115 }
116 }
117 }
118
119 void set_scanned_klass(Klass* klass) {
120 assert(_scanned_klass == NULL || klass == NULL, "Should always only handling one klass at a time");
121 _scanned_klass = klass;
122 }
123
124 private:
125 void do_klass_barrier() {
126 assert(_scanned_klass != NULL, "Should not be called without having a scanned klass");
127 _scanned_klass->record_modified_oops();
128 }
129
130 };
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85 typedef PSRootsClosure</*promote_immediately=*/false> PSScavengeRootsClosure;
86 typedef PSRootsClosure</*promote_immediately=*/true> PSPromoteRootsClosure;
87
88 // Scavenges a single oop in a Klass.
89 class PSScavengeFromKlassClosure: public OopClosure {
90 private:
91 PSPromotionManager* _pm;
92 // Used to redirty a scanned klass if it has oops
93 // pointing to the young generation after being scanned.
94 Klass* _scanned_klass;
95 public:
96 PSScavengeFromKlassClosure(PSPromotionManager* pm) : _pm(pm), _scanned_klass(NULL) { }
97 void do_oop(narrowOop* p) { ShouldNotReachHere(); }
98 void do_oop(oop* p) {
99 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
100 assert(!psh->is_in_reserved(p), "GC barrier needed");
101 if (PSScavenge::should_scavenge(p)) {
102 assert(PSScavenge::should_scavenge(p, true), "revisiting object?");
103
104 oop o = *p;
105 if (!o->is_forwarded()) {
106 _pm->copy_to_survivor_space</*promote_immediately=*/false>(o);
107 }
108 oop new_obj = o->forwardee();
109 oopDesc::encode_store_heap_oop_not_null(p, new_obj);
110
111 if (PSScavenge::is_obj_in_young(new_obj)) {
112 do_klass_barrier();
113 }
114 }
115 }
116
117 void set_scanned_klass(Klass* klass) {
118 assert(_scanned_klass == NULL || klass == NULL, "Should always only handling one klass at a time");
119 _scanned_klass = klass;
120 }
121
122 private:
123 void do_klass_barrier() {
124 assert(_scanned_klass != NULL, "Should not be called without having a scanned klass");
125 _scanned_klass->record_modified_oops();
126 }
127
128 };
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