72 lines
2.6 KiB
C
72 lines
2.6 KiB
C
/*
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* Copyright © 2008-2011 Kristian Høgsberg
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* Copyright © 2011 Intel Corporation
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* Copyright © 2013-2015 Red Hat, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#pragma once
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#include "config.h"
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#include <stdbool.h>
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#include <stddef.h>
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/*
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* This list data structure is a verbatim copy from wayland-util.h from the
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* Wayland project; except that wl_ prefix has been removed.
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*/
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struct list {
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struct list *prev;
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struct list *next;
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};
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void list_init(struct list *list);
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void list_insert(struct list *list, struct list *elm);
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void list_append(struct list *list, struct list *elm);
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void list_remove(struct list *elm);
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bool list_empty(const struct list *list);
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bool list_is_last(const struct list *list, const struct list *elm);
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#define container_of(ptr, type, member) \
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(__typeof__(type) *)((char *)(ptr) - \
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offsetof(__typeof__(type), member))
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#define list_first_entry(head, pos, member) \
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container_of((head)->next, __typeof__(*pos), member)
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#define list_last_entry(head, pos, member) \
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container_of((head)->prev, __typeof__(*pos), member)
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#define list_for_each(pos, head, member) \
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for (pos = 0, pos = list_first_entry(head, pos, member); \
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&pos->member != (head); \
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pos = list_first_entry(&pos->member, pos, member))
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#define list_for_each_safe(pos, tmp, head, member) \
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for (pos = 0, tmp = 0, \
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pos = list_first_entry(head, pos, member), \
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tmp = list_first_entry(&pos->member, tmp, member); \
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&pos->member != (head); \
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pos = tmp, \
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tmp = list_first_entry(&pos->member, tmp, member))
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