116 lines
2.5 KiB
C
116 lines
2.5 KiB
C
/*
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* Copyright © 2008 Kristian Høgsberg
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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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#include <stdlib.h>
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#include <stdint.h>
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#include <string.h>
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#include "wayland-util.h"
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WL_EXPORT void
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wl_list_init(struct wl_list *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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WL_EXPORT void
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wl_list_insert(struct wl_list *list, struct wl_list *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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WL_EXPORT void
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wl_list_remove(struct wl_list *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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}
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WL_EXPORT int
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wl_list_length(struct wl_list *list)
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{
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struct wl_list *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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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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WL_EXPORT int
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wl_list_empty(struct wl_list *list)
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{
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return list->next == list;
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}
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WL_EXPORT void
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wl_array_init(struct wl_array *array)
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{
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memset(array, 0, sizeof *array);
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}
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WL_EXPORT void
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wl_array_release(struct wl_array *array)
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{
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free(array->data);
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}
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WL_EXPORT void *
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wl_array_add(struct wl_array *array, int size)
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{
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int alloc;
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void *data, *p;
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if (array->alloc > 0)
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alloc = array->alloc;
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else
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alloc = 16;
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while (alloc < array->size + size)
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alloc *= 2;
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if (array->alloc < alloc) {
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if (array->alloc > 0)
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data = realloc(array->data, alloc);
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else
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data = malloc(alloc);
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if (data == NULL)
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return 0;
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array->data = data;
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array->alloc = alloc;
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}
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p = array->data + array->size;
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array->size += size;
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return p;
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}
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