vm/to_tenured_collector.cpp

   1 #include "master.hpp"
   2
   3 namespace factor
   4 {
   5
   6 to_tenured_collector::to_tenured_collector(factor_vm *myvm_) :
   7         collector<tenured_space,to_tenured_policy>(
   8                 myvm_,
   9                 &myvm_->gc_stats.aging_stats,
  10                 myvm_->data->tenured,
  11                 to_tenured_policy(myvm_)) {}
  12
  13 void to_tenured_collector::tenure_reachable_objects()
  14 {
  15         std::vector<object *> *mark_stack = &this->target->mark_stack;
  16         while(!mark_stack->empty())
  17         {
  18                 object *obj = mark_stack->back();
  19                 mark_stack->pop_back();
  20                 this->trace_slots(obj);
  21         }
  22 }
  23
  24 void factor_vm::collect_to_tenured()
  25 {
  26         /* Copy live objects from aging space to tenured space. */
  27         to_tenured_collector collector(this);
  28
  29         collector.trace_roots();
  30         collector.trace_contexts();
  31         collector.trace_cards(data->tenured,
  32                 card_points_to_aging,
  33                 dummy_unmarker());
  34         collector.trace_code_heap_roots(&code->points_to_aging);
  35         collector.tenure_reachable_objects();
  36         update_code_heap_for_minor_gc(&code->points_to_aging);
  37
  38         nursery.here = nursery.start;
  39         data->reset_generation(data->aging);
  40         code->points_to_nursery.clear();
  41         code->points_to_aging.clear();
  42 }
  43
  44 }