blob: 3d4a4438e0637641fcb3364dc858b625bae27a59 (
plain) (
blame)
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
|
/*
* Please, don't add this file to libcommon because clock_gettime() requires
* -lrt on systems with old libc.
*/
#include <time.h>
#include <sys/sysinfo.h>
#include <sys/time.h>
#include "c.h"
#include "nls.h"
#include "monotonic.h"
int get_boot_time(struct timeval *boot_time)
{
#ifdef CLOCK_BOOTTIME
struct timespec hires_uptime;
struct timeval lores_uptime;
#endif
struct timeval now;
#ifdef HAVE_SYSINFO
struct sysinfo info;
#endif
if (gettimeofday(&now, NULL) != 0) {
warn(_("gettimeofday failed"));
return -errno;
}
#ifdef CLOCK_BOOTTIME
if (clock_gettime(CLOCK_BOOTTIME, &hires_uptime) == 0) {
TIMESPEC_TO_TIMEVAL(&lores_uptime, &hires_uptime);
timersub(&now, &lores_uptime, boot_time);
return 0;
}
#endif
#ifdef HAVE_SYSINFO
/* fallback */
if (sysinfo(&info) != 0)
warn(_("sysinfo failed"));
boot_time->tv_sec = now.tv_sec - info.uptime;
boot_time->tv_usec = 0;
return 0;
#else
return -ENOSYS;
#endif
}
int gettime_monotonic(struct timeval *tv)
{
#ifdef CLOCK_MONOTONIC
/* Can slew only by ntp and adjtime */
int ret;
struct timespec ts;
# ifdef CLOCK_MONOTONIC_RAW
/* Linux specific, cant slew */
if (!(ret = clock_gettime(CLOCK_MONOTONIC_RAW, &ts))) {
# else
if (!(ret = clock_gettime(CLOCK_MONOTONIC, &ts))) {
# endif
tv->tv_sec = ts.tv_sec;
tv->tv_usec = ts.tv_nsec / 1000;
}
return ret;
#else
return gettimeofday(tv, NULL);
#endif
}
|
