1 /* System-dependent timing definitions. Generic version.
2 Copyright (C) 1996,1997,1999-2002,2003 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
20 * Never include this file directly; use <time.h> instead.
23 #ifndef __need_timeval
25 # define _BITS_TIME_H 1
27 /* ISO/IEC 9899:1990 7.12.1: <time.h>
28 The macro `CLOCKS_PER_SEC' is the number per second of the value
29 returned by the `clock' function. */
30 /* CAE XSH, Issue 4, Version 2: <time.h>
31 The value of CLOCKS_PER_SEC is required to be 1 million on all
32 XSI-conformant systems. */
33 # define CLOCKS_PER_SEC 1000000l
35 /* Get the arch-specific value of __UCLIBC_CLK_TCK_CONST used for CLK_TCK
36 * in sysconf() and clock(). */
37 #include <bits/uClibc_clk_tck.h>
39 # if !defined __STRICT_ANSI__ && !defined __USE_XOPEN2K
40 /* Even though CLOCKS_PER_SEC has such a strange value CLK_TCK
41 presents the real value for clock ticks per second for the system. */
42 # include <bits/types.h>
43 /* Note (uClibc): glibc #defines CLK_TCK as a sysconf() call. */
44 # define CLK_TCK ((__clock_t) __UCLIBC_CLK_TCK_CONST)
47 # ifdef __USE_POSIX199309
48 /* Identifier for system-wide realtime clock. */
49 # define CLOCK_REALTIME 0
50 /* Monotonic system-wide clock. */
51 # define CLOCK_MONOTONIC 1
52 /* High-resolution timer from the CPU. */
53 # define CLOCK_PROCESS_CPUTIME_ID 2
54 /* Thread-specific CPU-time clock. */
55 # define CLOCK_THREAD_CPUTIME_ID 3
56 /* Monotonic system-wide clock, not adjusted for frequency scaling. */
57 # define CLOCK_MONOTONIC_RAW 4
58 /* Identifier for system-wide realtime clock, updated only on ticks. */
59 # define CLOCK_REALTIME_COARSE 5
60 /* Monotonic system-wide clock, updated only on ticks. */
61 # define CLOCK_MONOTONIC_COARSE 6
63 /* Flag to indicate time is absolute. */
64 # define TIMER_ABSTIME 1
67 # endif /* bits/time.h */
71 # undef __need_timeval
72 # ifndef _STRUCT_TIMEVAL
73 # define _STRUCT_TIMEVAL 1
74 # include <bits/types.h>
76 /* A time value that is accurate to the nearest
77 microsecond but also has a range of years. */
80 __time_t tv_sec; /* Seconds. */
81 __suseconds_t tv_usec; /* Microseconds. */
83 # endif /* struct timeval */
84 #endif /* need timeval */