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
|
/* timespec -- System time interface
Copyright (C) 2000, 2002, 2004, 2005 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
#if ! defined TIMESPEC_H
# define TIMESPEC_H
# include <sys/types.h>
# if TIME_WITH_SYS_TIME
# include <sys/time.h>
# include <time.h>
# else
# if HAVE_SYS_TIME_H
# include <sys/time.h>
# else
# include <time.h>
# endif
# endif
# if ! HAVE_STRUCT_TIMESPEC
/* Some systems don't define this struct, e.g., AIX 4.1, Ultrix 4.3. */
struct timespec
{
time_t tv_sec;
long tv_nsec;
};
# endif
/* Return negative, zero, positive if A < B, A == B, A > B, respectively.
Assume the nanosecond components are in range, or close to it. */
static inline int
timespec_cmp (struct timespec a, struct timespec b)
{
return (a.tv_sec < b.tv_sec ? -1
: a.tv_sec > b.tv_sec ? 1
: a.tv_nsec - b.tv_nsec);
}
# if ! HAVE_DECL_NANOSLEEP
/* Don't specify a prototype here. Some systems (e.g., OSF) declare
nanosleep with a conflicting one (const-less first parameter). */
int nanosleep ();
# endif
void gettime (struct timespec *);
int settime (struct timespec const *);
#endif
|
