[thirdparty/systemd.git] / src / shared / fdset.h

/* SPDX-License-Identifier: LGPL-2.1+ */
#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/>.
***/

#include <stdbool.h>

#include "hashmap.h"
#include "macro.h"
#include "set.h"

typedef struct FDSet FDSet;

FDSet* fdset_new(void);
FDSet* fdset_free(FDSet *s);

int fdset_put(FDSet *s, int fd);
int fdset_put_dup(FDSet *s, int fd);

bool fdset_contains(FDSet *s, int fd);
int fdset_remove(FDSet *s, int fd);

int fdset_new_array(FDSet **ret, const int *fds, unsigned n_fds);
int fdset_new_fill(FDSet **ret);
int fdset_new_listen_fds(FDSet **ret, bool unset);

int fdset_cloexec(FDSet *fds, bool b);

int fdset_close_others(FDSet *fds);

unsigned fdset_size(FDSet *fds);
bool fdset_isempty(FDSet *fds);

int fdset_iterate(FDSet *s, Iterator *i);

int fdset_steal_first(FDSet *fds);

#define FDSET_FOREACH(fd, fds, i) \
        for ((i) = ITERATOR_FIRST, (fd) = fdset_iterate((fds), &(i)); (fd) >= 0; (fd) = fdset_iterate((fds), &(i)))

DEFINE_TRIVIAL_CLEANUP_FUNC(FDSet*, fdset_free);
#define _cleanup_fdset_free_ _cleanup_(fdset_freep)
Commit	Line	Data
	1	/* SPDX-License-Identifier: LGPL-2.1+ */
	2	#pragma once
	3
	4	/***
	5	This file is part of systemd.
	6
	7	Copyright 2010 Lennart Poettering
	8
	9	systemd is free software; you can redistribute it and/or modify it
	10	under the terms of the GNU Lesser General Public License as published by
	11	the Free Software Foundation; either version 2.1 of the License, or
	12	(at your option) any later version.
	13
	14	systemd is distributed in the hope that it will be useful, but
	15	WITHOUT ANY WARRANTY; without even the implied warranty of
	16	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	17	Lesser General Public License for more details.
	18
	19	You should have received a copy of the GNU Lesser General Public License
	20	along with systemd; If not, see <http://www.gnu.org/licenses/>.
	21	***/
	22
	23	#include <stdbool.h>
	24
	25	#include "hashmap.h"
	26	#include "macro.h"
	27	#include "set.h"
	28
	29	typedef struct FDSet FDSet;
	30
	31	FDSet* fdset_new(void);
	32	FDSet* fdset_free(FDSet *s);
	33
	34	int fdset_put(FDSet *s, int fd);
	35	int fdset_put_dup(FDSet *s, int fd);
	36
	37	bool fdset_contains(FDSet *s, int fd);
	38	int fdset_remove(FDSet *s, int fd);
	39
	40	int fdset_new_array(FDSet *ret, const int fds, unsigned n_fds);
	41	int fdset_new_fill(FDSet **ret);
	42	int fdset_new_listen_fds(FDSet **ret, bool unset);
	43
	44	int fdset_cloexec(FDSet *fds, bool b);
	45
	46	int fdset_close_others(FDSet *fds);
	47
	48	unsigned fdset_size(FDSet *fds);
	49	bool fdset_isempty(FDSet *fds);
	50
	51	int fdset_iterate(FDSet s, Iterator i);
	52
	53	int fdset_steal_first(FDSet *fds);
	54
	55	#define FDSET_FOREACH(fd, fds, i) \
	56	for ((i) = ITERATOR_FIRST, (fd) = fdset_iterate((fds), &(i)); (fd) >= 0; (fd) = fdset_iterate((fds), &(i)))
	57
	58	DEFINE_TRIVIAL_CLEANUP_FUNC(FDSet*, fdset_free);
	59	#define _cleanup_fdset_free_ _cleanup_(fdset_freep)