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         current_gc->event->started_card_scan();
  22         collector.trace_cards(data->tenured,
  23                 card_points_to_nursery,
  24                 simple_unmarker(card_points_to_nursery));
  25         if(data->aging->here != data->aging->start)
  26         {
  27                 collector.trace_cards(data->aging,
  28                         card_points_to_nursery,
  29                         full_unmarker());
  30         }
  31         current_gc->event->ended_card_scan(collector.cards_scanned,collector.decks_scanned);
  32
  33         current_gc->event->started_code_scan();
  34         collector.trace_code_heap_roots(&code->points_to_nursery);
  35         current_gc->event->ended_code_scan(collector.code_blocks_scanned);
  36
  37         collector.cheneys_algorithm();
  38
  39         data->reset_generation(&nursery);
  40         code->points_to_nursery.clear();
  41 }
  42
  43 }