5 void factor_vm::collect_aging() {
6 /* Promote objects referenced from tenured space to tenured space, copy
7 everything else to the aging semi-space, and reset the nursery pointer. */
9 /* Change the op so that if we fail here, an assertion will be
11 current_gc->op = collect_to_tenured_op;
13 to_tenured_collector collector(this);
15 gc_event* event = current_gc->event;
18 event->started_card_scan();
19 collector.trace_cards(data->tenured, card_points_to_aging, full_unmarker());
21 event->ended_card_scan(collector.cards_scanned, collector.decks_scanned);
24 event->started_code_scan();
25 collector.trace_code_heap_roots(&code->points_to_aging);
27 event->ended_code_scan(collector.code_blocks_scanned);
29 collector.tenure_reachable_objects();
32 /* If collection fails here, do a to_tenured collection. */
33 current_gc->op = collect_aging_op;
35 std::swap(data->aging, data->aging_semispace);
38 copying_collector<aging_space, aging_policy> collector(this,
41 collector.data_visitor.visit_roots();
42 collector.data_visitor.visit_contexts();
44 collector.cheneys_algorithm();
46 data->reset_nursery();
47 code->clear_remembered_set();