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/*
* Copyright © 2008 Kristian Høgsberg
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that copyright
* notice and this permission notice appear in supporting documentation, and
* that the name of the copyright holders not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. The copyright holders make no representations
* about the suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
* OF THIS SOFTWARE.
*/
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include "wayland-util.h"
struct wl_hash {
struct wl_object **objects;
uint32_t count, alloc;
};
struct wl_hash *
wl_hash_create(void)
{
struct wl_hash *hash;
hash = malloc(sizeof *hash);
if (hash == NULL)
return hash;
memset(hash, 0, sizeof *hash);
return hash;
}
void
wl_hash_destroy(struct wl_hash *hash)
{
free(hash);
}
int wl_hash_insert(struct wl_hash *hash, struct wl_object *object)
{
struct wl_object **objects;
uint32_t alloc;
if (hash->count == hash->alloc) {
if (hash->alloc == 0)
alloc = 16;
else
alloc = hash->alloc * 2;
objects = realloc(hash->objects, alloc * sizeof *objects);
if (objects == NULL)
return -1;
hash->objects = objects;
hash->alloc = alloc;
}
hash->objects[hash->count] = object;
hash->count++;
return 0;
}
struct wl_object *
wl_hash_lookup(struct wl_hash *hash, uint32_t id)
{
int i;
for (i = 0; i < hash->count; i++) {
if (hash->objects[i]->id == id)
return hash->objects[i];
}
return NULL;
}
void
wl_hash_remove(struct wl_hash *hash, struct wl_object *object)
{
int i;
for (i = 0; i < hash->count; i++) {
if (hash->objects[i]->id == object->id) {
hash->objects[i] = hash->objects[hash->count - 1];
hash->count--;
break;
}
}
}
WL_EXPORT void
wl_list_init(struct wl_list *list)
{
list->prev = list;
list->next = list;
}
WL_EXPORT void
wl_list_insert(struct wl_list *list, struct wl_list *elm)
{
elm->prev = list;
elm->next = list->next;
list->next = elm;
elm->next->prev = elm;
}
WL_EXPORT void
wl_list_remove(struct wl_list *elm)
{
elm->prev->next = elm->next;
elm->next->prev = elm->prev;
}
WL_EXPORT int
wl_list_length(struct wl_list *list)
{
struct wl_list *e;
int count;
count = 0;
e = list->next;
while (e != list) {
e = e->next;
count++;
}
return count;
}
WL_EXPORT int
wl_list_empty(struct wl_list *list)
{
return list->next == list;
}
WL_EXPORT void
wl_array_init(struct wl_array *array)
{
memset(array, 0, sizeof *array);
}
WL_EXPORT void
wl_array_release(struct wl_array *array)
{
free(array->data);
}
WL_EXPORT void *
wl_array_add(struct wl_array *array, int size)
{
int alloc;
void *data, *p;
if (array->alloc > 0)
alloc = array->alloc;
else
alloc = 16;
while (alloc < array->size + size)
alloc *= 2;
if (array->alloc < alloc) {
if (array->alloc > 0)
data = realloc(array->data, alloc);
else
data = malloc(alloc);
if (data == NULL)
return 0;
array->data = data;
array->alloc = alloc;
}
p = array->data + array->size;
array->size += size;
return p;
}
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