/vm/aging_collector.cpp
http://github.com/abeaumont/factor · C++ · 56 lines · 37 code · 14 blank · 5 comment · 4 complexity · eacdec5916eeea82c591e7f88b04082f MD5 · raw file
- #include "master.hpp"
- namespace factor
- {
- aging_collector::aging_collector(factor_vm *parent_) :
- copying_collector<aging_space,aging_policy>(
- parent_,
- parent_->data->aging,
- aging_policy(parent_)) {}
- void factor_vm::collect_aging()
- {
- /* Promote objects referenced from tenured space to tenured space, copy
- everything else to the aging semi-space, and reset the nursery pointer. */
- {
- /* Change the op so that if we fail here, an assertion will be
- raised. */
- current_gc->op = collect_to_tenured_op;
- to_tenured_collector collector(this);
- gc_event *event = current_gc->event;
- if(event) event->started_card_scan();
- collector.trace_cards(data->tenured,
- card_points_to_aging,
- full_unmarker());
- if(event) event->ended_card_scan(collector.cards_scanned,collector.decks_scanned);
- if(event) event->started_code_scan();
- collector.trace_code_heap_roots(&code->points_to_aging);
- if(event) event->ended_code_scan(collector.code_blocks_scanned);
- collector.tenure_reachable_objects();
- }
- {
- /* If collection fails here, do a to_tenured collection. */
- current_gc->op = collect_aging_op;
- std::swap(data->aging,data->aging_semispace);
- data->reset_generation(data->aging);
- aging_collector collector(this);
- collector.trace_roots();
- collector.trace_contexts();
- collector.cheneys_algorithm();
- data->reset_generation(&nursery);
- code->clear_remembered_set();
- }
- }
- }