79 void cleanupHRRS();
80
81 G1RemSet(G1CollectedHeap* g1, CardTableModRefBS* ct_bs);
82 ~G1RemSet();
83
84 // Invoke "blk->do_oop" on all pointers into the collection set
85 // from objects in regions outside the collection set (having
86 // invoked "blk->set_region" to set the "from" region correctly
87 // beforehand.)
88 //
89 // Invoke code_root_cl->do_code_blob on the unmarked nmethods
90 // on the strong code roots list for each region in the
91 // collection set.
92 //
93 // The "worker_i" param is for the parallel case where the id
94 // of the worker thread calling this function can be helpful in
95 // partitioning the work to be done. It should be the same as
96 // the "i" passed to the calling thread's work(i) function.
97 // In the sequential case this param will be ignored.
98 void oops_into_collection_set_do(OopsInHeapRegionClosure* blk,
99 CodeBlobToOopClosure* code_root_cl,
100 uint worker_i);
101
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 CodeBlobToOopClosure* 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
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79 void cleanupHRRS();
80
81 G1RemSet(G1CollectedHeap* g1, CardTableModRefBS* ct_bs);
82 ~G1RemSet();
83
84 // Invoke "blk->do_oop" on all pointers into the collection set
85 // from objects in regions outside the collection set (having
86 // invoked "blk->set_region" to set the "from" region correctly
87 // beforehand.)
88 //
89 // Invoke code_root_cl->do_code_blob on the unmarked nmethods
90 // on the strong code roots list for each region in the
91 // collection set.
92 //
93 // The "worker_i" param is for the parallel case where the id
94 // of the worker thread calling this function can be helpful in
95 // partitioning the work to be done. It should be the same as
96 // the "i" passed to the calling thread's work(i) function.
97 // In the sequential case this param will be ignored.
98 void oops_into_collection_set_do(OopsInHeapRegionClosure* blk,
99 CodeBlobClosure* code_root_cl,
100 uint worker_i);
101
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
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