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Replace single-linked with double-linked lists. It results in more

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compact and more efficient code.

	* grub-core/kern/list.c (grub_list_push): Moved from here ...
	* include/grub/list.h (grub_list_push): ... to here. Set prev.
	(grub_list_remove): Moved from here ...
	* include/grub/list.h (grub_list_remove): ... here. Use and set prev.
	(grub_prio_list_insert): Set prev.
	* include/grub/list.h (grub_list): Add prev. All users updated.
This commit is contained in:
Vladimir 'phcoder' Serbinenko 2012-01-24 13:31:12 +01:00
parent 48b391e9ab
commit 87edb8940a
27 changed files with 111 additions and 75 deletions
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23
grub-core/kern/list.c
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@ -21,26 +21,6 @@
#include <grub/misc.h>
#include <grub/mm.h>
void
grub_list_push (grub_list_t *head, grub_list_t item)
{
item->next = *head;
*head = item;
}
void
grub_list_remove (grub_list_t *head, grub_list_t item)
{
grub_list_t *p, q;
for (p = head, q = *p; q; p = &(q->next), q = q->next)
if (q == item)
{
*p = q->next;
break;
}
}
void *
grub_named_list_find (grub_named_list_t head, const char *name)
{
@ -81,6 +61,9 @@ grub_prio_list_insert (grub_prio_list_t *head, grub_prio_list_t nitem)
*p = nitem;
nitem->next = q;
if (q)
q->prev = &nitem->next;
nitem->prev = p;
if (! inactive)
nitem->prio |= GRUB_PRIO_LIST_FLAG_ACTIVE;