63 _to_space = heap->young_gen()->to_space(); |
63 _to_space = heap->young_gen()->to_space(); |
64 |
64 |
65 assert(_promotion_manager != NULL, "Sanity"); |
65 assert(_promotion_manager != NULL, "Sanity"); |
66 } |
66 } |
67 |
67 |
68 void do_oop(oop* p) { |
68 template <class T> void do_oop_work(T* p) { |
69 assert (*p != NULL, "expected non-null ref"); |
69 assert (!oopDesc::is_null(*p), "expected non-null ref"); |
70 assert ((*p)->is_oop(), "expected an oop while scanning weak refs"); |
70 assert ((oopDesc::load_decode_heap_oop_not_null(p))->is_oop(), |
71 |
71 "expected an oop while scanning weak refs"); |
72 oop obj = oop(*p); |
72 |
73 // Weak refs may be visited more than once. |
73 // Weak refs may be visited more than once. |
74 if (PSScavenge::should_scavenge(obj, _to_space)) { |
74 if (PSScavenge::should_scavenge(p, _to_space)) { |
75 PSScavenge::copy_and_push_safe_barrier(_promotion_manager, p); |
75 PSScavenge::copy_and_push_safe_barrier(_promotion_manager, p); |
76 } |
76 } |
77 } |
77 } |
|
78 virtual void do_oop(oop* p) { PSKeepAliveClosure::do_oop_work(p); } |
|
79 virtual void do_oop(narrowOop* p) { PSKeepAliveClosure::do_oop_work(p); } |
78 }; |
80 }; |
79 |
81 |
80 class PSEvacuateFollowersClosure: public VoidClosure { |
82 class PSEvacuateFollowersClosure: public VoidClosure { |
81 private: |
83 private: |
82 PSPromotionManager* _promotion_manager; |
84 PSPromotionManager* _promotion_manager; |
83 public: |
85 public: |
84 PSEvacuateFollowersClosure(PSPromotionManager* pm) : _promotion_manager(pm) {} |
86 PSEvacuateFollowersClosure(PSPromotionManager* pm) : _promotion_manager(pm) {} |
85 |
87 |
86 void do_void() { |
88 virtual void do_void() { |
87 assert(_promotion_manager != NULL, "Sanity"); |
89 assert(_promotion_manager != NULL, "Sanity"); |
88 _promotion_manager->drain_stacks(true); |
90 _promotion_manager->drain_stacks(true); |
89 guarantee(_promotion_manager->stacks_empty(), |
91 guarantee(_promotion_manager->stacks_empty(), |
90 "stacks should be empty at this point"); |
92 "stacks should be empty at this point"); |
91 } |
93 } |