factor/vm/aging_collector.cpp

57 lines
1.4 KiB
C++

#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();
}
}
}