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
|
/*
* clock_gettime() for uClibc
*
* Copyright (C) 2003 by Justus Pendleton <uc@ryoohki.net>
* Copyright (C) 2005 by Peter Kjellerstedt <pkj@axis.com>
* Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org>
*
* Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
*/
#include <sys/syscall.h>
#include <time.h>
#ifdef __VDSO_SUPPORT__
#include "ldso.h"
#endif
#if defined(__UCLIBC_USE_TIME64__) && defined(__NR_clock_gettime64)
#include "internal/time64_helpers.h"
int __libc_clock_gettime(clockid_t clock_id, struct timespec *tp)
{
struct __ts64_struct __ts64;
int __ret = INLINE_SYSCALL(clock_gettime64, 2, clock_id, &__ts64);
if (tp) {
tp->tv_sec = __ts64.tv_sec;
tp->tv_nsec = __ts64.tv_nsec;
}
return __ret;
}
#elif defined(__NR_clock_gettime)
int __libc_clock_gettime(clockid_t clock_id, struct timespec *tp)
{
return INLINE_SYSCALL(clock_gettime, 2, clock_id, tp);
}
#else
# include <sys/time.h>
int __libc_clock_gettime(clockid_t clock_id, struct timespec* tp)
{
struct timeval tv;
int retval = -1;
switch (clock_id) {
case CLOCK_REALTIME:
/* In Linux, gettimeofday fails only on bad parameter.
* We know that here parameter isn't bad.
*/
gettimeofday(&tv, NULL);
TIMEVAL_TO_TIMESPEC(&tv, tp);
retval = 0;
break;
default:
errno = EINVAL;
break;
}
return retval;
}
#endif
int clock_gettime(clockid_t clock_id, struct timespec *tp)
{
#if defined(__VDSO_SUPPORT__) && defined(ARCH_VDSO_CLOCK_GETTIME)
return ARCH_VDSO_CLOCK_GETTIME(clock_id, tp);
#else
return __libc_clock_gettime(clock_id, tp);
#endif
}
|
