1/*
2 * lws-minimal-http-server-eventlib-foreign
3 *
4 * Written in 2020 by Christian Fuchs <christian.fuchs@scs.ch>
5 *
6 * This file is made available under the Creative Commons CC0 1.0
7 * Universal Public Domain Dedication.
8 *
9 * The sdevent specific code
10 */
11
12#include <libwebsockets.h>
13
14#include <string.h>
15#include <signal.h>
16
17#include <systemd/sd-event.h>
18
19#include "private.h"
20
21static struct sd_event *sd_loop;
22static sd_event_source *sd_timer;
23static sd_event_source *sd_signal;
24
25static int
26timer_cb_sd(sd_event_source *source, uint64_t now, void *user)
27{
28	foreign_timer_service(sd_loop);
29
30	if (sd_timer) {
31		sd_event_source_set_time(sd_timer, now + 1000000);
32		sd_event_source_set_enabled(sd_timer, SD_EVENT_ON);
33	}
34
35	return 0;
36}
37
38static int
39signal_cb_sd(sd_event_source *source, const struct signalfd_siginfo *si,
40             void *user)
41{
42	signal_cb((int)si->ssi_signo);
43	return 0;
44}
45
46static void
47foreign_event_loop_init_and_run_libsdevent(void)
48{
49	uint64_t now;
50
51	/* we create and start our "foreign loop" */
52
53	sd_event_default(&sd_loop);
54	sd_event_add_signal(sd_loop, &sd_signal, SIGINT, signal_cb_sd, NULL);
55
56	sd_event_now(sd_loop, CLOCK_MONOTONIC, &now);
57	sd_event_add_time(sd_loop, &sd_timer, CLOCK_MONOTONIC, now,
58			  (uint64_t) 1000, timer_cb_sd, NULL);
59
60	sd_event_loop(sd_loop);
61}
62
63static void
64foreign_event_loop_stop_libsdevent(void)
65{
66	sd_event_exit(sd_loop, 0);
67}
68
69static void
70foreign_event_loop_cleanup_libsdevent(void)
71{
72	sd_event_source_set_enabled(sd_timer, SD_EVENT_OFF);
73	sd_timer = sd_event_source_unref(sd_timer);
74
75	sd_event_source_set_enabled(sd_signal, SD_EVENT_OFF);
76	sd_signal = sd_event_source_unref(sd_signal);
77
78	sd_loop = sd_event_unref(sd_loop);
79}
80
81const struct ops ops_sdevent = {
82	foreign_event_loop_init_and_run_libsdevent,
83	foreign_event_loop_stop_libsdevent,
84	foreign_event_loop_cleanup_libsdevent
85};
86
87