102 // Prepare for and cleanup after an oops_into_collection_set_do
103 // call. Must call each of these once before and after (in sequential
104 // code) any threads call oops_into_collection_set_do. (This offers an
105 // opportunity to sequential setup and teardown of structures needed by a
106 // parallel iteration over the CS's RS.)
107 void prepare_for_oops_into_collection_set_do();
108 void cleanup_after_oops_into_collection_set_do();
109
110 void scanRS(OopsInHeapRegionClosure* oc,
111 CodeBlobClosure* code_root_cl,
112 uint worker_i);
113
114 void updateRS(DirtyCardQueue* into_cset_dcq, uint worker_i);
115
116 CardTableModRefBS* ct_bs() { return _ct_bs; }
117 size_t cardsScanned() { return _total_cards_scanned; }
118
119 // Record, if necessary, the fact that *p (where "p" is in region "from",
120 // which is required to be non-NULL) has changed to a new non-NULL value.
121 template <class T> void write_ref(HeapRegion* from, T* p);
122 template <class T> void par_write_ref(HeapRegion* from, T* p, int tid);
123
124 // Requires "region_bm" and "card_bm" to be bitmaps with 1 bit per region
125 // or card, respectively, such that a region or card with a corresponding
126 // 0 bit contains no part of any live object. Eliminates any remembered
127 // set entries that correspond to dead heap ranges.
128 void scrub(BitMap* region_bm, BitMap* card_bm);
129
130 // Like the above, but assumes is called in parallel: "worker_num" is the
131 // parallel thread id of the current thread, and "claim_val" is the
132 // value that should be used to claim heap regions.
133 void scrub_par(BitMap* region_bm, BitMap* card_bm,
134 uint worker_num, int claim_val);
135
136 // Refine the card corresponding to "card_ptr".
137 // If check_for_refs_into_cset is true, a true result is returned
138 // if the given card contains oops that have references into the
139 // current collection set.
140 virtual bool refine_card(jbyte* card_ptr,
141 uint worker_i,
142 bool check_for_refs_into_cset);
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102 // Prepare for and cleanup after an oops_into_collection_set_do
103 // call. Must call each of these once before and after (in sequential
104 // code) any threads call oops_into_collection_set_do. (This offers an
105 // opportunity to sequential setup and teardown of structures needed by a
106 // parallel iteration over the CS's RS.)
107 void prepare_for_oops_into_collection_set_do();
108 void cleanup_after_oops_into_collection_set_do();
109
110 void scanRS(OopsInHeapRegionClosure* oc,
111 CodeBlobClosure* code_root_cl,
112 uint worker_i);
113
114 void updateRS(DirtyCardQueue* into_cset_dcq, uint worker_i);
115
116 CardTableModRefBS* ct_bs() { return _ct_bs; }
117 size_t cardsScanned() { return _total_cards_scanned; }
118
119 // Record, if necessary, the fact that *p (where "p" is in region "from",
120 // which is required to be non-NULL) has changed to a new non-NULL value.
121 template <class T> void write_ref(HeapRegion* from, T* p);
122 template <class T> void par_write_ref(HeapRegion* from, T* p, uint tid);
123
124 // Requires "region_bm" and "card_bm" to be bitmaps with 1 bit per region
125 // or card, respectively, such that a region or card with a corresponding
126 // 0 bit contains no part of any live object. Eliminates any remembered
127 // set entries that correspond to dead heap ranges.
128 void scrub(BitMap* region_bm, BitMap* card_bm);
129
130 // Like the above, but assumes is called in parallel: "worker_num" is the
131 // parallel thread id of the current thread, and "claim_val" is the
132 // value that should be used to claim heap regions.
133 void scrub_par(BitMap* region_bm, BitMap* card_bm,
134 uint worker_num, int claim_val);
135
136 // Refine the card corresponding to "card_ptr".
137 // If check_for_refs_into_cset is true, a true result is returned
138 // if the given card contains oops that have references into the
139 // current collection set.
140 virtual bool refine_card(jbyte* card_ptr,
141 uint worker_i,
142 bool check_for_refs_into_cset);
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