6 aging_collector::aging_collector(factor_vm *parent_) :
7 copying_collector<aging_space,aging_policy>(
10 aging_policy(parent_)) {}
12 void factor_vm::collect_aging()
14 /* Promote objects referenced from tenured space to tenured space, copy
15 everything else to the aging semi-space, and reset the nursery pointer. */
17 /* Change the op so that if we fail here, we proceed to a full
18 tenured collection. We are collecting to tenured space, and
19 cards were unmarked, so we can't proceed with a to_tenured
21 current_gc->op = collect_to_tenured_op;
23 to_tenured_collector collector(this);
24 collector.trace_cards(data->tenured,
26 simple_unmarker(card_mark_mask));
27 collector.tenure_reachable_objects();
30 /* If collection fails here, do a to_tenured collection. */
31 current_gc->op = collect_aging_op;
33 std::swap(data->aging,data->aging_semispace);
34 data->reset_generation(data->aging);
36 aging_collector collector(this);
38 collector.trace_roots();
39 collector.trace_contexts();
40 collector.trace_code_heap_roots(&code->points_to_aging);
41 collector.cheneys_algorithm();
43 update_code_heap_for_minor_gc(&code->points_to_aging);
45 data->reset_generation(&nursery);
46 code->points_to_nursery.clear();