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Extract "free moved list" function

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Extract a function to free the moved list.  We'll use this function
later on to compact at the same time as sweep.
This commit is contained in:
Aaron Patterson 2020-05-28 14:13:15 -07:00
parent fd7849cedb
commit c7ceaa6d3c
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GPG key ID: 953170BCB4FFAFC6
1 changed files with 29 additions and 23 deletions
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52
gc.c
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@ -8613,6 +8613,34 @@ gc_check_references_for_moved(rb_objspace_t *objspace)
return Qnil;
}
static void
gc_unlink_moved_list(rb_objspace_t *objspace, VALUE moved_list_head)
{
/* For each moved slot */
while (moved_list_head) {
VALUE next_moved;
struct heap_page *page;
page = GET_HEAP_PAGE(moved_list_head);
next_moved = RMOVED(moved_list_head)->next;
/* clear the memory for that moved slot */
RMOVED(moved_list_head)->flags = 0;
RMOVED(moved_list_head)->destination = 0;
RMOVED(moved_list_head)->next = 0;
page->free_slots++;
heap_page_add_freeobj(objspace, page, moved_list_head);
if (page->free_slots == page->total_slots && heap_pages_freeable_pages > 0) {
heap_pages_freeable_pages--;
heap_unlink_page(objspace, heap_eden, page);
heap_add_page(objspace, heap_tomb, page);
}
objspace->profile.total_freed_objects++;
moved_list_head = next_moved;
}
}
static void
gc_compact_after_gc(rb_objspace_t *objspace, int use_toward_empty, int use_double_pages, int use_verifier)
{
@ -8653,29 +8681,7 @@ gc_compact_after_gc(rb_objspace_t *objspace, int use_toward_empty, int use_doubl
heap_eden->free_pages = NULL;
heap_eden->using_page = NULL;
/* For each moved slot */
while (moved_list_head) {
VALUE next_moved;
struct heap_page *page;
page = GET_HEAP_PAGE(moved_list_head);
next_moved = RMOVED(moved_list_head)->next;
/* clear the memory for that moved slot */
RMOVED(moved_list_head)->flags = 0;
RMOVED(moved_list_head)->destination = 0;
RMOVED(moved_list_head)->next = 0;
page->free_slots++;
heap_page_add_freeobj(objspace, page, moved_list_head);
if (page->free_slots == page->total_slots && heap_pages_freeable_pages > 0) {
heap_pages_freeable_pages--;
heap_unlink_page(objspace, heap_eden, page);
heap_add_page(objspace, heap_tomb, page);
}
objspace->profile.total_freed_objects++;
moved_list_head = next_moved;
}
gc_unlink_moved_list(objspace, moved_list_head);
/* Add any eden pages with free slots back to the free pages list */
struct heap_page *page = NULL;