CVSROOT: /cvs/dm Module name: device-mapper Changes by: agk@xxxxxxxxxxxxxx 2008-06-08 14:53:51 Modified files: . : WHATS_NEW include : list.h Log message: bring list.h into line with lvm2 Patches: http://sourceware.org/cgi-bin/cvsweb.cgi/device-mapper/WHATS_NEW.diff?cvsroot=dm&r1=1.239&r2=1.240 http://sourceware.org/cgi-bin/cvsweb.cgi/device-mapper/include/list.h.diff?cvsroot=dm&r1=1.6&r2=1.7 --- device-mapper/WHATS_NEW 2008/06/06 20:45:41 1.239 +++ device-mapper/WHATS_NEW 2008/06/08 14:53:51 1.240 @@ -1,7 +1,7 @@ Version 1.02.27 - =============================== Remove --enable-jobs from configure. (Set at runtime instead.) - Bring configure.in into line with the lvm2 version. + Bring configure.in and list.h into line with the lvm2 versions. Version 1.02.26 - 6th June 2008 =============================== --- device-mapper/include/list.h 2007/08/21 16:26:06 1.6 +++ device-mapper/include/list.h 2008/06/08 14:53:51 1.7 @@ -1,6 +1,6 @@ /* * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved. - * Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved. + * Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved. * * This file is part of the device-mapper userspace tools. * @@ -81,9 +81,18 @@ } /* + * Remove an element from existing list and insert before 'head'. + */ +static inline void list_move(struct list *head, struct list *elem) +{ + list_del(elem); + list_add(head, elem); +} + +/* * Is the list empty? */ -static inline int list_empty(struct list *head) +static inline int list_empty(const struct list *head) { return head->n == head; } @@ -91,7 +100,7 @@ /* * Is this the first element of the list? */ -static inline int list_start(struct list *head, struct list *elem) +static inline int list_start(const struct list *head, const struct list *elem) { return elem->p == head; } @@ -99,7 +108,7 @@ /* * Is this the last element of the list? */ -static inline int list_end(struct list *head, struct list *elem) +static inline int list_end(const struct list *head, const struct list *elem) { return elem->n == head; } @@ -107,7 +116,7 @@ /* * Return first element of the list or NULL if empty */ -static inline struct list *list_first(struct list *head) +static inline struct list *list_first(const struct list *head) { return (list_empty(head) ? NULL : head->n); } @@ -115,7 +124,7 @@ /* * Return last element of the list or NULL if empty */ -static inline struct list *list_last(struct list *head) +static inline struct list *list_last(const struct list *head) { return (list_empty(head) ? NULL : head->p); } @@ -123,7 +132,7 @@ /* * Return the previous element of the list, or NULL if we've reached the start. */ -static inline struct list *list_prev(struct list *head, struct list *elem) +static inline struct list *list_prev(const struct list *head, const struct list *elem) { return (list_start(head, elem) ? NULL : elem->p); } @@ -131,7 +140,7 @@ /* * Return the next element of the list, or NULL if we've reached the end. */ -static inline struct list *list_next(struct list *head, struct list *elem) +static inline struct list *list_next(const struct list *head, const struct list *elem) { return (list_end(head, elem) ? NULL : elem->n); } @@ -204,6 +213,26 @@ #define list_iterate_items(v, head) list_iterate_items_gen(v, (head), list) /* + * Walk a list, setting 'v' in turn to the containing structure of each item. + * The containing structure should be the same type as 'v'. + * The 'struct list' variable within the containing structure is 'field'. + * t must be defined as a temporary variable of the same type as v. + */ +#define list_iterate_items_gen_safe(v, t, head, field) \ + for (v = list_struct_base((head)->n, typeof(*v), field), \ + t = list_struct_base(v->field.n, typeof(*v), field); \ + &v->field != (head); \ + v = t, t = list_struct_base(v->field.n, typeof(*v), field)) +/* + * Walk a list, setting 'v' in turn to the containing structure of each item. + * The containing structure should be the same type as 'v'. + * The list should be 'struct list list' within the containing structure. + * t must be defined as a temporary variable of the same type as v. + */ +#define list_iterate_items_safe(v, t, head) \ + list_iterate_items_gen_safe(v, t, (head), list) + +/* * Walk a list backwards, setting 'v' in turn to the containing structure * of each item. * The containing structure should be the same type as 'v'. -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
