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/* SPDX-License-Identifier: BSD-2-Clause */
/*
* dhcpcd - DHCP client daemon
* Copyright (c) 2006-2021 Roy Marples <roy@marples.name>
* All rights reserved
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef ELOOP_H
#define ELOOP_H
#include <time.h>
/* Handy macros to create subsecond timeouts */
#define CSEC_PER_SEC 100
#define MSEC_PER_SEC 1000
#define NSEC_PER_CSEC 10000000
#define NSEC_PER_MSEC 1000000
#define NSEC_PER_SEC 1000000000
/* eloop queues are really only for deleting timeouts registered
* for a function or object.
* The idea being that one interface has different timeouts for
* say DHCP and DHCPv6. */
#ifndef ELOOP_QUEUE
#define ELOOP_QUEUE 1
#endif
/* Used for deleting a timeout for all queues. */
#define ELOOP_QUEUE_ALL 0
/* Forward declare eloop - the content should be invisible to the outside */
struct eloop;
unsigned long long eloop_timespec_diff(const struct timespec *tsp,
const struct timespec *usp, unsigned int *nsp);
size_t eloop_event_count(const struct eloop *);
int eloop_event_add_rw(struct eloop *, int,
void (*)(void *), void *,
void (*)(void *), void *);
int eloop_event_add(struct eloop *, int,
void (*)(void *), void *);
int eloop_event_add_w(struct eloop *, int,
void (*)(void *), void *);
#define eloop_event_delete(eloop, fd) \
eloop_event_delete_write((eloop), (fd), 0)
#define eloop_event_remove_writecb(eloop, fd) \
eloop_event_delete_write((eloop), (fd), 1)
int eloop_event_delete_write(struct eloop *, int, int);
#define eloop_timeout_add_tv(eloop, tv, cb, ctx) \
eloop_q_timeout_add_tv((eloop), ELOOP_QUEUE, (tv), (cb), (ctx))
#define eloop_timeout_add_sec(eloop, tv, cb, ctx) \
eloop_q_timeout_add_sec((eloop), ELOOP_QUEUE, (tv), (cb), (ctx))
#define eloop_timeout_add_msec(eloop, ms, cb, ctx) \
eloop_q_timeout_add_msec((eloop), ELOOP_QUEUE, (ms), (cb), (ctx))
#define eloop_timeout_delete(eloop, cb, ctx) \
eloop_q_timeout_delete((eloop), ELOOP_QUEUE, (cb), (ctx))
int eloop_q_timeout_add_tv(struct eloop *, int,
const struct timespec *, void (*)(void *), void *);
int eloop_q_timeout_add_sec(struct eloop *, int,
unsigned int, void (*)(void *), void *);
int eloop_q_timeout_add_msec(struct eloop *, int,
unsigned long, void (*)(void *), void *);
int eloop_q_timeout_delete(struct eloop *, int, void (*)(void *), void *);
int eloop_signal_set_cb(struct eloop *, const int *, size_t,
void (*)(int, void *), void *);
int eloop_signal_mask(struct eloop *, sigset_t *oldset);
struct eloop * eloop_new(void);
void eloop_clear(struct eloop *, ...);
void eloop_free(struct eloop *);
void eloop_exit(struct eloop *, int);
void eloop_enter(struct eloop *);
int eloop_forked(struct eloop *);
int eloop_open(struct eloop *);
int eloop_start(struct eloop *, sigset_t *);
#endif
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