93 lines
2.3 KiB
C
93 lines
2.3 KiB
C
/*
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* Copyright © 2008-2011 Kristian Høgsberg
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* Copyright © 2011, 2012 Intel Corporation
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that copyright
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* notice and this permission notice appear in supporting documentation, and
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* that the name of the copyright holders not be used in advertising or
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* publicity pertaining to distribution of the software without specific,
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* written prior permission. The copyright holders make no representations
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* about the suitability of this software for any purpose. It is provided "as
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* is" without express or implied warranty.
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*
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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* OF THIS SOFTWARE.
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*/
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/* This list implementation is based on the Wayland source code */
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#include "cogl-config.h"
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#include <stdlib.h>
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#include <string.h>
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#include "cogl/cogl-list.h"
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void
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_cogl_list_init (CoglList *list)
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{
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list->prev = list;
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list->next = list;
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}
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void
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_cogl_list_insert (CoglList *list, CoglList *elm)
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{
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elm->prev = list;
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elm->next = list->next;
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list->next = elm;
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elm->next->prev = elm;
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}
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void
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_cogl_list_remove (CoglList *elm)
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{
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elm->prev->next = elm->next;
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elm->next->prev = elm->prev;
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elm->next = NULL;
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elm->prev = NULL;
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}
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int
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_cogl_list_length (CoglList *list)
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{
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CoglList *e;
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int count;
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count = 0;
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e = list->next;
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while (e != list)
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{
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e = e->next;
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count++;
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}
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return count;
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}
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int
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_cogl_list_empty (CoglList *list)
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{
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return list->next == list;
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}
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void
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_cogl_list_insert_list (CoglList *list,
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CoglList *other)
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{
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if (_cogl_list_empty (other))
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return;
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other->next->prev = list;
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other->prev->next = list->next;
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list->next->prev = other->prev;
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list->next = other->next;
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}
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