/*
* Copyright © 2009 - 2012 Intel Corporation
*
* Permission is hereby granted , free of charge , to any person obtaining a
* copy of this software and associated documentation files ( the " Software " ) ,
* to deal in the Software without restriction , including without limitation
* the rights to use , copy , modify , merge , publish , distribute , sublicense ,
* and / or sell copies of the Software , and to permit persons to whom the
* Software is furnished to do so , subject to the following conditions :
*
* The above copyright notice and this permission notice ( including the next
* paragraph ) shall be included in all copies or substantial portions of the
* Software .
*
* THE SOFTWARE IS PROVIDED " AS IS " , WITHOUT WARRANTY OF ANY KIND , EXPRESS OR
* IMPLIED , INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY ,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT . IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM , DAMAGES OR OTHER
* LIABILITY , WHETHER IN AN ACTION OF CONTRACT , TORT OR OTHERWISE , ARISING
* FROM , OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE .
*
* Authors :
* Eric Anholt < eric @ anholt . net >
*
*/
#ifndef _SET_H
#define _SET_H
#include <inttypes.h>
#include <stdbool.h>
#ifdef __cplusplus
extern "C" {
#endif
struct set_entry {
uint32_t hash;
const void *key;
};
struct set {
void *mem_ctx;
struct set_entry *table;
uint32_t (*key_hash_function)(const void *key);
bool (*key_equals_function)(const void *a, const void *b);
uint32_t size;
uint32_t rehash;
uint64_t size_magic;
uint64_t rehash_magic;
uint32_t max_entries;
uint32_t size_index;
uint32_t entries;
uint32_t deleted_entries;
};
struct set *
_mesa_set_create(void *mem_ctx,
uint32_t (*key_hash_function)(const void *key),
bool (*key_equals_function)(const void *a,
const void *b));
struct set *
_mesa_set_clone(struct set *set, void *dst_mem_ctx);
void
_mesa_set_destroy(struct set *set,
void (*delete_function)(struct set_entry *entry));
void
_mesa_set_resize(struct set *set, uint32_t entries);
void
_mesa_set_clear(struct set *set,
void (*delete_function)(struct set_entry *entry));
struct set_entry *
_mesa_set_add(struct set *set, const void *key);
struct set_entry *
_mesa_set_add_pre_hashed(struct set *set, uint32_t hash, const void *key);
struct set_entry *
_mesa_set_search_or_add(struct set *set, const void *key);
struct set_entry *
_mesa_set_search_or_add_pre_hashed(struct set *set, uint32_t hash,
const void *key);
struct set_entry *
_mesa_set_search(const struct set *set, const void *key);
struct set_entry *
_mesa_set_search_pre_hashed(const struct set *set, uint32_t hash,
const void *key);
struct set_entry *
_mesa_set_search_and_add(struct set *set, const void *key, bool *replaced);
struct set_entry *
_mesa_set_search_and_add_pre_hashed(struct set *set, uint32_t hash,
const void *key, bool *replaced);
void
_mesa_set_remove(struct set *set, struct set_entry *entry);
void
_mesa_set_remove_key(struct set *set, const void *key);
struct set_entry *
_mesa_set_next_entry(const struct set *set, struct set_entry *entry);
struct set_entry *
_mesa_set_random_entry(struct set *set,
int (*predicate)(struct set_entry *entry));
struct set *
_mesa_pointer_set_create(void *mem_ctx);
/**
* This foreach function is safe against deletion , but not against
* insertion ( which may rehash the set , making entry a dangling
* pointer ) .
*/
#define set_foreach(set, entry) \
for (struct set_entry *entry = _mesa_set_next_entry(set, NULL); \
entry != NULL; \
entry = _mesa_set_next_entry(set, entry))
#ifdef __cplusplus
} /* extern C */
#endif
#endif /* _SET_H */
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(vorverarbeitet am 2026-08-26)
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