blob: 532047ededc2ee208a540921668c834a2eb809c3 (
plain)
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
|
/*
* clock_getres() for uClibc
*
* 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 __NR_clock_getres
_syscall2(int, clock_getres, clockid_t, clock_id, struct timespec*, res)
#else
# include <unistd.h>
int clock_getres(clockid_t clock_id, struct timespec* res)
{
int retval = -1;
switch (clock_id) {
case CLOCK_REALTIME:
if (res) {
long clk_tck;
if ((clk_tck = sysconf(_SC_CLK_TCK)) < 0)
clk_tck = 100;
res->tv_sec = 0;
res->tv_nsec = 1000000000 / clk_tck;
}
retval = 0;
break;
default:
errno = EINVAL;
break;
}
return retval;
}
#endif
libc_hidden_def(clock_getres)
|
