static size_t
incremental_gc(mrb_state *mrb, size_t limit)
{
switch (mrb->gc_state) {
case GC_STATE_NONE:
root_scan_phase(mrb);
mrb->gc_state = GC_STATE_MARK;
flip_white_part(mrb);
return 0;
case GC_STATE_MARK:
if (mrb->gray_list) {
return incremental_marking_phase(mrb, limit);
}
else {
final_marking_phase(mrb);
prepare_incremental_sweep(mrb);
return 0;
}
case GC_STATE_SWEEP: {
size_t tried_sweep = 0;
tried_sweep = incremental_sweep_phase(mrb, limit);
if (tried_sweep == 0)
mrb->gc_state = GC_STATE_NONE;
return tried_sweep;
}
default:
/* unknown state */
mrb_assert(0);
return 0;
}
}
static size_t
incremental_gc(mrb_state *mrb, mrb_gc *gc, size_t limit)
{
switch (gc->state) {
case MRB_GC_STATE_ROOT:
root_scan_phase(mrb, gc);
gc->state = MRB_GC_STATE_MARK;
flip_white_part(gc);
return 0;
case MRB_GC_STATE_MARK:
if (gc->gray_list) {
return incremental_marking_phase(mrb, gc, limit);
}
else {
final_marking_phase(mrb, gc);
prepare_incremental_sweep(mrb, gc);
return 0;
}
case MRB_GC_STATE_SWEEP: {
size_t tried_sweep = 0;
tried_sweep = incremental_sweep_phase(mrb, gc, limit);
if (tried_sweep == 0)
gc->state = MRB_GC_STATE_ROOT;
return tried_sweep;
}
default:
/* unknown state */
mrb_assert(0);
return 0;
}
}
