vm/aging_collector.cpp

   1 #include "master.hpp"
   2
   3 namespace factor
   4 {
   5
   6 aging_collector::aging_collector(factor_vm *myvm_) :
   7         copying_collector<aging_space,aging_policy>(
   8                 myvm_,
   9                 &myvm_->gc_stats.aging_stats,
  10                 myvm_->data->aging,
  11                 aging_policy(myvm_)) {}
  12
  13 void factor_vm::collect_aging()
  14 {
  15         {
  16                 /* Change the op so that if we fail here, we proceed to a full
  17                 tenured collection. We are collecting to tenured space, and
  18                 cards were unmarked, so we can't proceed with a to_tenured
  19                 collection. */
  20                 current_gc->op = collect_to_tenured_op;
  21
  22                 to_tenured_collector collector(this);
  23                 collector.trace_cards(data->tenured,
  24                         card_points_to_aging,
  25                         simple_unmarker(card_mark_mask));
  26                 collector.cheneys_algorithm();
  27         }
  28         {
  29                 /* If collection fails here, do a to_tenured collection. */
  30                 current_gc->op = collect_aging_op;
  31
  32                 std::swap(data->aging,data->aging_semispace);
  33                 reset_generation(data->aging);
  34
  35                 aging_collector collector(this);
  36
  37                 collector.trace_roots();
  38                 collector.trace_contexts();
  39                 collector.trace_code_heap_roots(&code->points_to_aging);
  40                 collector.cheneys_algorithm();
  41                 update_code_heap_for_minor_gc(&code->points_to_aging);
  42
  43                 nursery.here = nursery.start;
  44                 code->points_to_nursery.clear();
  45         }
  46 }
  47
  48 }