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add some reverse() macros

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Bruno Raoult
2022-12-03 16:10:59 +01:00
parent a0e204d7ab
commit 4c8f0f3f72
1 changed files with 46 additions and 2 deletions
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44
c/include/plist.h
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@@ -1,4 +1,9 @@
/* SPDX-License-Identifier: GPL-2.0-or-later */ /* SPDX-License-Identifier: GPL-2.0-or-later */
/* adaptation of kernel's <linux/plist.h>
*
*/
/* /*
* Descending-priority-sorted double-linked list * Descending-priority-sorted double-linked list
* *
@@ -152,6 +157,14 @@ extern void plist_requeue(struct plist_node *node, struct plist_head *head);
#define plist_for_each(pos, head) \ #define plist_for_each(pos, head) \
list_for_each_entry(pos, &(head)->node_list, node_list) list_for_each_entry(pos, &(head)->node_list, node_list)
/**
* plist_for_each_reverse - iterate backwards over the plist
* @pos: the type * to use as a loop counter
* @head: the head for your list
*/
#define plist_for_each_reverse(pos, head) \
list_for_each_entry_reverse(pos, &(head)->node_list, node_list)
/** /**
* plist_for_each_continue - continue iteration over the plist * plist_for_each_continue - continue iteration over the plist
* @pos: the type * to use as a loop cursor * @pos: the type * to use as a loop cursor
@@ -162,6 +175,17 @@ extern void plist_requeue(struct plist_node *node, struct plist_head *head);
#define plist_for_each_continue(pos, head) \ #define plist_for_each_continue(pos, head) \
list_for_each_entry_continue(pos, &(head)->node_list, node_list) list_for_each_entry_continue(pos, &(head)->node_list, node_list)
/**
* plist_for_each_continue_reverse - continue iteration over the plist
* @pos: the type * to use as a loop cursor
* @head: the head for your list
*
* Continue to iterate backwards over plist, continuing after the current
* position.
*/
#define plist_for_each_continue_reverse(pos, head) \
list_for_each_entry_continue_reverse(pos, &(head)->node_list, node_list)
/** /**
* plist_for_each_safe - iterate safely over a plist of given type * plist_for_each_safe - iterate safely over a plist of given type
* @pos: the type * to use as a loop counter * @pos: the type * to use as a loop counter
@@ -173,6 +197,17 @@ extern void plist_requeue(struct plist_node *node, struct plist_head *head);
#define plist_for_each_safe(pos, n, head) \ #define plist_for_each_safe(pos, n, head) \
list_for_each_entry_safe(pos, n, &(head)->node_list, node_list) list_for_each_entry_safe(pos, n, &(head)->node_list, node_list)
/**
* plist_for_each_safe_reverse - iterate backwards safely over a plist of given type
* @pos: the type * to use as a loop counter
* @n: another type * to use as temporary storage
* @head: the head for your list
*
* Iterate backwards over a plist of given type, safe against removal of list entry.
*/
#define plist_for_each_safe_reverse(pos, n, head) \
list_for_each_entry_safe_reverse(pos, n, &(head)->node_list, node_list)
/** /**
* plist_for_each_entry - iterate over list of given type * plist_for_each_entry - iterate over list of given type
* @pos: the type * to use as a loop counter * @pos: the type * to use as a loop counter
@@ -182,6 +217,15 @@ extern void plist_requeue(struct plist_node *node, struct plist_head *head);
#define plist_for_each_entry(pos, head, mem) \ #define plist_for_each_entry(pos, head, mem) \
list_for_each_entry(pos, &(head)->node_list, mem.node_list) list_for_each_entry(pos, &(head)->node_list, mem.node_list)
/**
* plist_for_each_entry_reverse - iterate backwards over list of given type
* @pos: the type * to use as a loop counter
* @head: the head for your list
* @mem: the name of the list_head within the struct
*/
#define plist_for_each_entry_reverse(pos, head, mem) \
list_for_each_entry_reverse(pos, &(head)->node_list, mem.node_list)
/** /**
* plist_for_each_entry_continue - continue iteration over list of given type * plist_for_each_entry_continue - continue iteration over list of given type
* @pos: the type * to use as a loop cursor * @pos: the type * to use as a loop cursor