5 aging_collector::aging_collector(factor_vm* parent)
6 : copying_collector<aging_space, aging_policy>(parent,
8 aging_policy(parent)) {}
10 void factor_vm::collect_aging() {
11 /* Promote objects referenced from tenured space to tenured space, copy
12 everything else to the aging semi-space, and reset the nursery pointer. */
14 /* Change the op so that if we fail here, an assertion will be
16 current_gc->op = collect_to_tenured_op;
18 to_tenured_collector collector(this);
20 gc_event* event = current_gc->event;
23 event->started_card_scan();
24 collector.trace_cards(data->tenured, card_points_to_aging, full_unmarker());
26 event->ended_card_scan(collector.cards_scanned, collector.decks_scanned);
29 event->started_code_scan();
30 collector.trace_code_heap_roots(&code->points_to_aging);
32 event->ended_code_scan(collector.code_blocks_scanned);
34 collector.tenure_reachable_objects();
37 /* If collection fails here, do a to_tenured collection. */
38 current_gc->op = collect_aging_op;
40 std::swap(data->aging, data->aging_semispace);
41 data->reset_generation(data->aging);
43 aging_collector collector(this);
45 collector.trace_roots();
46 collector.trace_contexts();
48 collector.cheneys_algorithm();
50 data->reset_generation(&nursery);
51 code->clear_remembered_set();