fcaf7994f2
Previously, nm_c_list_move_*() only allowed to move element inside the same list. Relax that, it works just the same list to move the element from one list into a different list.
163 lines
4.3 KiB
C
163 lines
4.3 KiB
C
/* NetworkManager -- Network link manager
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA.
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*
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* (C) Copyright 2014 Red Hat, Inc.
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*/
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#ifndef __NM_C_LIST_H__
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#define __NM_C_LIST_H__
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#include "c-list/src/c-list.h"
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/*****************************************************************************/
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#define nm_c_list_contains_entry(list, what, member) \
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({ \
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typeof (what) _what = (what); \
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\
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_what && c_list_contains (list, &_what->member); \
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})
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/*****************************************************************************/
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typedef struct {
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CList lst;
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void *data;
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} NMCListElem;
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static inline NMCListElem *
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nm_c_list_elem_new_stale (void *data)
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{
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NMCListElem *elem;
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elem = g_slice_new (NMCListElem);
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elem->data = data;
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return elem;
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}
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static inline gboolean
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nm_c_list_elem_free_full (NMCListElem *elem, GDestroyNotify free_fcn)
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{
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if (!elem)
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return FALSE;
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c_list_unlink_stale (&elem->lst);
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if (free_fcn)
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free_fcn (elem->data);
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g_slice_free (NMCListElem, elem);
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return TRUE;
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}
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static inline gboolean
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nm_c_list_elem_free (NMCListElem *elem)
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{
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return nm_c_list_elem_free_full (elem, NULL);
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}
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static inline void
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nm_c_list_elem_free_all (CList *head, GDestroyNotify free_fcn)
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{
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NMCListElem *elem;
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while ((elem = c_list_first_entry (head, NMCListElem, lst)))
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nm_c_list_elem_free_full (elem, free_fcn);
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}
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/**
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* nm_c_list_elem_find_first:
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* @head: the @CList head of a list containing #NMCListElem elements.
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* Note that the head is not itself part of the list.
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* @needle: the needle pointer.
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*
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* Iterates the list and returns the first #NMCListElem with the matching @needle,
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* using pointer equality.
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*
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* Returns: the found list element or %NULL if not found.
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*/
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static inline NMCListElem *
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nm_c_list_elem_find_first (CList *head, gconstpointer needle)
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{
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NMCListElem *elem;
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c_list_for_each_entry (elem, head, lst) {
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if (elem->data == needle)
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return elem;
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}
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return NULL;
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}
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/*****************************************************************************/
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/**
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* nm_c_list_move_before:
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* @lst: the list element to which @elem will be prepended.
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* @elem: the list element to move.
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*
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* This unlinks @elem from the current list and linkes it before
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* @lst. This is like c_list_link_before(), except that @elem must
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* be initialized and linked. Note that @elem may be linked in @lst
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* or in another list. In both cases it gets moved.
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*
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* Returns: %TRUE if there were any changes. %FALSE if elem was already
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* linked at the right place.
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*/
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static inline gboolean
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nm_c_list_move_before (CList *lst, CList *elem)
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{
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nm_assert (lst);
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nm_assert (elem);
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if ( lst != elem
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&& lst->prev != elem) {
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c_list_unlink_stale (elem);
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c_list_link_before (lst, elem);
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return TRUE;
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}
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return FALSE;
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}
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#define nm_c_list_move_tail(lst, elem) nm_c_list_move_before (lst, elem)
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/**
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* nm_c_list_move_after:
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* @lst: the list element to which @elem will be prepended.
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* @elem: the list element to move.
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*
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* This unlinks @elem from the current list and linkes it after
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* @lst. This is like c_list_link_after(), except that @elem must
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* be initialized and linked. Note that @elem may be linked in @lst
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* or in another list. In both cases it gets moved.
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*
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* Returns: %TRUE if there were any changes. %FALSE if elem was already
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* linked at the right place.
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*/
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static inline gboolean
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nm_c_list_move_after (CList *lst, CList *elem)
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{
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nm_assert (lst);
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nm_assert (elem);
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if ( lst != elem
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&& lst->next != elem) {
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c_list_unlink_stale (elem);
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c_list_link_after (lst, elem);
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return TRUE;
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}
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return FALSE;
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}
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#define nm_c_list_move_front(lst, elem) nm_c_list_move_after (lst, elem)
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#endif /* __NM_C_LIST_H__ */
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