95 guarantee(GrainBytes == 0, "we should only set it once");
96 // The cast to int is safe, given that we've bounded region_size by
97 // MIN_REGION_SIZE and MAX_REGION_SIZE.
98 GrainBytes = region_size;
99 log_info(gc, heap)("Heap region size: " SIZE_FORMAT "M", GrainBytes / M);
100
101 guarantee(GrainWords == 0, "we should only set it once");
102 GrainWords = GrainBytes >> LogHeapWordSize;
103 guarantee((size_t) 1 << LogOfHRGrainWords == GrainWords, "sanity");
104
105 guarantee(CardsPerRegion == 0, "we should only set it once");
106 CardsPerRegion = GrainBytes >> G1CardTable::card_shift;
107
108 LogCardsPerRegion = log2_long((jlong) CardsPerRegion);
109
110 if (G1HeapRegionSize != GrainBytes) {
111 FLAG_SET_ERGO(G1HeapRegionSize, GrainBytes);
112 }
113 }
114
115 void HeapRegion::hr_clear(bool keep_remset, bool clear_space, bool locked) {
116 assert(_humongous_start_region == NULL,
117 "we should have already filtered out humongous regions");
118 assert(!in_collection_set(),
119 "Should not clear heap region %u in the collection set", hrm_index());
120
121 clear_young_index_in_cset();
122 clear_index_in_opt_cset();
123 uninstall_surv_rate_group();
124 set_free();
125 reset_pre_dummy_top();
126
127 if (!keep_remset) {
128 if (locked) {
129 rem_set()->clear_locked();
130 } else {
131 rem_set()->clear();
132 }
133 }
134
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95 guarantee(GrainBytes == 0, "we should only set it once");
96 // The cast to int is safe, given that we've bounded region_size by
97 // MIN_REGION_SIZE and MAX_REGION_SIZE.
98 GrainBytes = region_size;
99 log_info(gc, heap)("Heap region size: " SIZE_FORMAT "M", GrainBytes / M);
100
101 guarantee(GrainWords == 0, "we should only set it once");
102 GrainWords = GrainBytes >> LogHeapWordSize;
103 guarantee((size_t) 1 << LogOfHRGrainWords == GrainWords, "sanity");
104
105 guarantee(CardsPerRegion == 0, "we should only set it once");
106 CardsPerRegion = GrainBytes >> G1CardTable::card_shift;
107
108 LogCardsPerRegion = log2_long((jlong) CardsPerRegion);
109
110 if (G1HeapRegionSize != GrainBytes) {
111 FLAG_SET_ERGO(G1HeapRegionSize, GrainBytes);
112 }
113 }
114
115 void HeapRegion::handle_evacuation_failed() {
116 uninstall_surv_rate_group();
117 clear_young_index_in_cset();
118 set_evacuation_failed(false);
119 set_old();
120 }
121
122 void HeapRegion::unlink_from_list() {
123 set_next(NULL);
124 set_prev(NULL);
125 set_containing_set(NULL);
126 }
127
128 void HeapRegion::hr_clear(bool keep_remset, bool clear_space, bool locked) {
129 assert(_humongous_start_region == NULL,
130 "we should have already filtered out humongous regions");
131 assert(!in_collection_set(),
132 "Should not clear heap region %u in the collection set", hrm_index());
133
134 clear_young_index_in_cset();
135 clear_index_in_opt_cset();
136 uninstall_surv_rate_group();
137 set_free();
138 reset_pre_dummy_top();
139
140 if (!keep_remset) {
141 if (locked) {
142 rem_set()->clear_locked();
143 } else {
144 rem_set()->clear();
145 }
146 }
147
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