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/*
* 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;
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));
void
_mesa_set_destroy(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(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);
void
_mesa_set_remove(struct set *set, struct set_entry *entry);
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));
/**
* 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 (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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