1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
|
/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include <errno.h>
#include "event-source.h"
#include "event-util.h"
#include "fd-util.h"
#include "log.h"
#include "string-util.h"
int event_reset_time(
sd_event *e,
sd_event_source **s,
clockid_t clock,
uint64_t usec,
uint64_t accuracy,
sd_event_time_handler_t callback,
void *userdata,
int64_t priority,
const char *description,
bool force_reset) {
bool created = false;
int enabled, r;
clockid_t c;
assert(e);
assert(s);
if (*s) {
if (!force_reset) {
r = sd_event_source_get_enabled(*s, &enabled);
if (r < 0)
return log_debug_errno(r, "sd-event: Failed to query whether event source \"%s\" is enabled or not: %m",
strna((*s)->description ?: description));
if (enabled != SD_EVENT_OFF)
return 0;
}
r = sd_event_source_get_time_clock(*s, &c);
if (r < 0)
return log_debug_errno(r, "sd-event: Failed to get clock id of event source \"%s\": %m", strna((*s)->description ?: description));
if (c != clock)
return log_debug_errno(SYNTHETIC_ERRNO(EINVAL),
"sd-event: Current clock id %i of event source \"%s\" is different from specified one %i.",
(int)c,
strna((*s)->description ? : description),
(int)clock);
r = sd_event_source_set_time(*s, usec);
if (r < 0)
return log_debug_errno(r, "sd-event: Failed to set time for event source \"%s\": %m", strna((*s)->description ?: description));
r = sd_event_source_set_time_accuracy(*s, accuracy);
if (r < 0)
return log_debug_errno(r, "sd-event: Failed to set accuracy for event source \"%s\": %m", strna((*s)->description ?: description));
/* callback function is not updated, as we do not have sd_event_source_set_time_callback(). */
(void) sd_event_source_set_userdata(*s, userdata);
r = sd_event_source_set_enabled(*s, SD_EVENT_ONESHOT);
if (r < 0)
return log_debug_errno(r, "sd-event: Failed to enable event source \"%s\": %m", strna((*s)->description ?: description));
} else {
r = sd_event_add_time(e, s, clock, usec, accuracy, callback, userdata);
if (r < 0)
return log_debug_errno(r, "sd-event: Failed to create timer event \"%s\": %m", strna(description));
created = true;
}
r = sd_event_source_set_priority(*s, priority);
if (r < 0)
return log_debug_errno(r, "sd-event: Failed to set priority for event source \"%s\": %m", strna((*s)->description ?: description));
if (description) {
r = sd_event_source_set_description(*s, description);
if (r < 0)
return log_debug_errno(r, "sd-event: Failed to set description for event source \"%s\": %m", description);
}
return created;
}
int event_reset_time_relative(
sd_event *e,
sd_event_source **s,
clockid_t clock,
uint64_t usec,
uint64_t accuracy,
sd_event_time_handler_t callback,
void *userdata,
int64_t priority,
const char *description,
bool force_reset) {
usec_t usec_now;
int r;
assert(e);
r = sd_event_now(e, clock, &usec_now);
if (r < 0)
return log_debug_errno(r, "sd-event: Failed to get the current time: %m");
return event_reset_time(e, s, clock, usec_add(usec_now, usec), accuracy, callback, userdata, priority, description, force_reset);
}
int event_add_time_change(sd_event *e, sd_event_source **ret, sd_event_io_handler_t callback, void *userdata) {
_cleanup_(sd_event_source_unrefp) sd_event_source *s = NULL;
_cleanup_close_ int fd = -1;
int r;
assert(e);
/* Allocates an IO event source that gets woken up whenever the clock changes. Needs to be recreated on each event */
fd = time_change_fd();
if (fd < 0)
return fd;
r = sd_event_add_io(e, &s, fd, EPOLLIN, callback, userdata);
if (r < 0)
return r;
r = sd_event_source_set_io_fd_own(s, true);
if (r < 0)
return r;
TAKE_FD(fd);
r = sd_event_source_set_description(s, "time-change");
if (r < 0)
return r;
if (ret)
*ret = TAKE_PTR(s);
else {
r = sd_event_source_set_floating(s, true);
if (r < 0)
return r;
}
return 0;
}
|
