mirror of
https://github.com/systemd/systemd
synced 2024-09-06 08:46:19 +00:00
util: add minimal OrderedSet type
OrderedSet implements a Set-like structure, but maintains insertion ordered. It is hence to Set what OrderedHashmap is for Hashmap. Internally, this is only a wrapper around OrderedHashmap for now, but this could one day be improved and be added to hashmap.c natively.
This commit is contained in:
parent
298a35ab54
commit
4a280a7e78
|
@ -792,6 +792,7 @@ libsystemd_shared_la_SOURCES = \
|
|||
src/shared/siphash24.c \
|
||||
src/shared/siphash24.h \
|
||||
src/shared/set.h \
|
||||
src/shared/ordered-set.h \
|
||||
src/shared/fdset.c \
|
||||
src/shared/fdset.h \
|
||||
src/shared/prioq.c \
|
||||
|
|
59
src/shared/ordered-set.h
Normal file
59
src/shared/ordered-set.h
Normal file
|
@ -0,0 +1,59 @@
|
|||
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
|
||||
|
||||
#pragma once
|
||||
|
||||
/***
|
||||
This file is part of systemd.
|
||||
|
||||
Copyright 2015 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/>.
|
||||
***/
|
||||
|
||||
#include "hashmap.h"
|
||||
|
||||
typedef struct OrderedSet OrderedSet;
|
||||
|
||||
static inline OrderedSet* ordered_set_new(const struct hash_ops *ops) {
|
||||
return (OrderedSet*) ordered_hashmap_new(ops);
|
||||
}
|
||||
|
||||
static inline OrderedSet* ordered_set_free(OrderedSet *s) {
|
||||
ordered_hashmap_free((OrderedHashmap*) s);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
static inline OrderedSet* ordered_set_free_free(OrderedSet *s) {
|
||||
ordered_hashmap_free_free((OrderedHashmap*) s);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
static inline int ordered_set_put(OrderedSet *s, void *p) {
|
||||
return ordered_hashmap_put((OrderedHashmap*) s, p, p);
|
||||
}
|
||||
|
||||
static inline bool ordered_set_isempty(OrderedSet *s) {
|
||||
return ordered_hashmap_isempty((OrderedHashmap*) s);
|
||||
}
|
||||
|
||||
static inline void *ordered_set_iterate(OrderedSet *s, Iterator *i) {
|
||||
return ordered_hashmap_iterate((OrderedHashmap*) s, i, NULL);
|
||||
}
|
||||
|
||||
#define ORDERED_SET_FOREACH(e, s, i) \
|
||||
for ((i) = ITERATOR_FIRST, (e) = ordered_set_iterate((s), &(i)); (e); (e) = ordered_set_iterate((s), &(i)))
|
||||
|
||||
DEFINE_TRIVIAL_CLEANUP_FUNC(OrderedSet*, ordered_set_free);
|
||||
|
||||
#define _cleanup_ordered_set_free_ _cleanup_(ordered_set_freep)
|
Loading…
Reference in a new issue