set.h revision 14bf2c9d375db6a4670bc0ef0e521e35a939a498
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
#pragma once
/***
This file is part of systemd.
Copyright 2010 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
/* Pretty straightforward set implementation. Internally based on the
* hashmap. That means that as a minor optimization a NULL set
* object will be treated as empty set for all read
* operations. That way it is not necessary to instantiate an object
* for each set use. */
#include "hashmap.h"
#include "util.h"
typedef struct Set Set;
Set *set_new(hash_func_t hash_func, compare_func_t compare_func);
void set_free(Set* s);
void set_free_free(Set *s);
Set* set_copy(Set *s);
int set_ensure_allocated(Set **s, hash_func_t hash_func, compare_func_t compare_func);
int set_put(Set *s, void *value);
int set_consume(Set *s, void *value);
int set_replace(Set *s, void *value);
void *set_get(Set *s, void *value);
bool set_contains(Set *s, void *value);
void *set_remove(Set *s, void *value);
int set_remove_and_put(Set *s, void *old_value, void *new_value);
int set_merge(Set *s, Set *other);
void set_move(Set *s, Set *other);
int set_move_one(Set *s, Set *other, void *value);
unsigned set_size(Set *s);
bool set_isempty(Set *s);
void *set_iterate(Set *s, Iterator *i);
void *set_iterate_backwards(Set *s, Iterator *i);
void *set_iterate_skip(Set *s, void *value, Iterator *i);
void set_clear(Set *s);
void set_clear_free(Set *s);
void *set_steal_first(Set *s);
void* set_first(Set *s);
void* set_last(Set *s);
char **set_get_strv(Set *s);
#define SET_FOREACH(e, s, i) \
for ((i) = ITERATOR_FIRST, (e) = set_iterate((s), &(i)); (e); (e) = set_iterate((s), &(i)))
#define SET_FOREACH_BACKWARDS(e, s, i) \
for ((i) = ITERATOR_LAST, (e) = set_iterate_backwards((s), &(i)); (e); (e) = set_iterate_backwards((s), &(i)))
DEFINE_TRIVIAL_CLEANUP_FUNC(Set*, set_free);
DEFINE_TRIVIAL_CLEANUP_FUNC(Set*, set_free_free);
#define _cleanup_set_free_ _cleanup_(set_freep)
#define _cleanup_set_free_free_ _cleanup_(set_free_freep)