vm/data_heap.hpp

   1 namespace factor {
   2
   3 struct data_heap {
   4   cell start;
   5
   6   cell young_size;
   7   cell aging_size;
   8   cell tenured_size;
   9
  10   segment* seg;
  11
  12   // Borrowed reference to a factor_vm::nursery
  13   bump_allocator* nursery;
  14   aging_space* aging;
  15   aging_space* aging_semispace;
  16   tenured_space* tenured;
  17
  18   card* cards;
  19   card* cards_end;
  20
  21   card_deck* decks;
  22   card_deck* decks_end;
  23
  24   data_heap(bump_allocator* vm_nursery,
  25             cell young_size,
  26             cell aging_size,
  27             cell tenured_size);
  28   ~data_heap();
  29   data_heap* grow(bump_allocator* vm_nursery, cell requested_size);
  30   template <typename Generation> void clear_cards(Generation* gen);
  31   template <typename Generation> void clear_decks(Generation* gen);
  32   void reset_nursery();
  33   void reset_aging();
  34   void reset_tenured();
  35   bool high_fragmentation_p();
  36   bool low_memory_p();
  37   void mark_all_cards();
  38   cell high_water_mark() { return nursery->size + aging->size; }
  39 };
  40
  41 struct data_heap_room {
  42   cell nursery_size;
  43   cell nursery_occupied;
  44   cell nursery_free;
  45   cell aging_size;
  46   cell aging_occupied;
  47   cell aging_free;
  48   cell tenured_size;
  49   cell tenured_occupied;
  50   cell tenured_total_free;
  51   cell tenured_contiguous_free;
  52   cell tenured_free_block_count;
  53   cell cards;
  54   cell decks;
  55   cell mark_stack;
  56 };
  57
  58 }