vm/nursery_collector.cpp

   1 #include "master.hpp"
   2
   3 namespace factor
   4 {
   5
   6 nursery_collector::nursery_collector(factor_vm *parent_) :
   7         copying_collector<aging_space,nursery_policy>(
   8                 parent_,
   9                 parent_->data->aging,
  10                 nursery_policy(parent_)) {}
  11
  12 void factor_vm::collect_nursery()
  13 {
  14         /* Copy live objects from the nursery (as determined by the root set and
  15         marked cards in aging and tenured) to aging space. */
  16         nursery_collector collector(this);
  17
  18         collector.trace_roots();
  19         collector.trace_contexts();
  20
  21         gc_event *event = current_gc->event;
  22
  23         if(event) event->started_card_scan();
  24         collector.trace_cards(data->tenured,
  25                 card_points_to_nursery,
  26                 simple_unmarker(card_points_to_nursery));
  27         if(data->aging->here != data->aging->start)
  28         {
  29                 collector.trace_cards(data->aging,
  30                         card_points_to_nursery,
  31                         full_unmarker());
  32         }
  33         if(event) event->ended_card_scan(collector.cards_scanned,collector.decks_scanned);
  34
  35         if(event) event->started_code_scan();
  36         collector.trace_code_heap_roots(&code->points_to_nursery);
  37         if(event) event->ended_code_scan(collector.code_blocks_scanned);
  38
  39         collector.cheneys_algorithm();
  40
  41         data->reset_generation(&nursery);
  42         code->points_to_nursery.clear();
  43 }
  44
  45 }