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gc.c: experiment before removing page->prev link

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This commit is contained in:
Yukihiro "Matz" Matsumoto
2023-09-11 23:29:22 +09:00
parent 9b90fd4f60
commit 22e74a7ee5
1 changed files with 6 additions and 3 deletions
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src/gc.c
+6 -3
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@@ -1057,14 +1057,15 @@ prepare_incremental_sweep(mrb_state *mrb, mrb_gc *gc)
// mrb_assert(gc->atomic_gray_list == NULL);
// mrb_assert(gc->gray_list == NULL);
gc->state = MRB_GC_STATE_SWEEP;
gc->sweeps = gc->heaps;
gc->sweeps = NULL;
gc->live_after_mark = gc->live;
}
static size_t
incremental_sweep_phase(mrb_state *mrb, mrb_gc *gc, size_t limit)
{
mrb_heap_page *page = gc->sweeps;
mrb_heap_page *prev = gc->sweeps;
mrb_heap_page *page = prev ? prev->next : gc->heaps;
size_t tried_sweep = 0;
mrb_bool rebuild = FALSE;
@@ -1105,6 +1106,7 @@ incremental_sweep_phase(mrb_state *mrb, mrb_gc *gc, size_t limit)
if (dead_slot) {
mrb_heap_page *next = page->next;
mrb_assert(prev == page->prev);
/* unlink_heap_page */
if (page->prev)
page->prev->next = page->next;
@@ -1122,13 +1124,14 @@ incremental_sweep_phase(mrb_state *mrb, mrb_gc *gc, size_t limit)
page->old = TRUE;
else
page->old = FALSE;
prev = page;
page = page->next;
}
tried_sweep += MRB_HEAP_PAGE_SIZE;
gc->live -= freed;
gc->live_after_mark -= freed;
}
gc->sweeps = page;
gc->sweeps = prev;
/* rebuild free_heaps link */
if (rebuild) {