vm/nursery_collector.cpp

   1 #include "master.hpp"
   2
   3 namespace factor {
   4
   5 nursery_collector::nursery_collector(factor_vm* parent_)
   6     : copying_collector<aging_space, nursery_policy>(parent_,
   7                                                      parent_->data->aging,
   8                                                      nursery_policy(parent_)) {}
   9
  10 void factor_vm::collect_nursery() {
  11   /* Copy live objects from the nursery (as determined by the root set and
  12      marked cards in aging and tenured) to aging space. */
  13   nursery_collector collector(this);
  14
  15   collector.trace_roots();
  16   collector.trace_contexts();
  17
  18   gc_event* event = current_gc->event;
  19
  20   if (event)
  21     event->started_card_scan();
  22   collector.trace_cards(data->tenured, card_points_to_nursery,
  23                         simple_unmarker(card_points_to_nursery));
  24   if (data->aging->here != data->aging->start) {
  25     collector.trace_cards(data->aging, card_points_to_nursery, full_unmarker());
  26   }
  27   if (event)
  28     event->ended_card_scan(collector.cards_scanned, collector.decks_scanned);
  29
  30   if (event)
  31     event->started_code_scan();
  32   collector.trace_code_heap_roots(&code->points_to_nursery);
  33   if (event)
  34     event->ended_code_scan(collector.code_blocks_scanned);
  35
  36   collector.cheneys_algorithm();
  37
  38   data->reset_generation(&nursery);
  39   code->points_to_nursery.clear();
  40 }
  41
  42 }