diff options
Diffstat (limited to 'src/eloop.h')
| -rw-r--r-- | src/eloop.h | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/src/eloop.h b/src/eloop.h new file mode 100644 index 000000000000..1813eaa64d24 --- /dev/null +++ b/src/eloop.h @@ -0,0 +1,98 @@ +/* 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 *); + +void 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_start(struct eloop *, sigset_t *); + +#endif |