git://sourceware.org / glibc.git / blame
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|---|---|---|
| 3fc6935a | 1 | /* System-dependent timing definitions. Generic version. |
| 89a4419c | 2 | Copyright (C) 1996,1997,1999-2002,2003,2010 Free Software Foundation, Inc. |
| f0e44959 UD |
3 | This file is part of the GNU C Library. |
| 4 | ||
| 5 | The GNU C Library is free software; you can redistribute it and/or | |
| 41bdb6e2 AJ |
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. | |
| f0e44959 UD |
9 | |
| 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 | |
| 41bdb6e2 | 13 | Lesser General Public License for more details. |
| f0e44959 | 14 | |
| 41bdb6e2 | 15 | You should have received a copy of the GNU Lesser General Public |
| 59ba27a6 PE |
16 | License along with the GNU C Library; if not, see |
| 17 | <http://www.gnu.org/licenses/>. */ | |
| f0e44959 | 18 | |
| 5107cf1d UD |
19 | /* |
| 20 | * Never include this file directly; use <time.h> instead. | |
| 21 | */ | |
| 22 | ||
| f4017d20 UD |
23 | #ifndef __need_timeval |
| 24 | # ifndef _BITS_TIME_H | |
| 25 | # define _BITS_TIME_H 1 | |
| 26 | ||
| 3fc6935a RM |
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 | |
| 34 | ||
| 35 | # if !defined __STRICT_ANSI__ && !defined __USE_XOPEN2K | |
| 36 | /* Even though CLOCKS_PER_SEC has such a strange value CLK_TCK | |
| 37 | presents the real value for clock ticks per second for the system. */ | |
| 38 | # include <bits/types.h> | |
| 39 | extern long int __sysconf (int); | |
| 40 | # define CLK_TCK ((__clock_t) __sysconf (2)) /* 2 is _SC_CLK_TCK */ | |
| 41 | # endif | |
| f4017d20 | 42 | |
| be1dd949 UD |
43 | # ifdef __USE_POSIX199309 |
| 44 | /* Identifier for system-wide realtime clock. */ | |
| 3fc6935a | 45 | # define CLOCK_REALTIME 0 |
| 1e543c0c UD |
46 | /* Monotonic system-wide clock. */ |
| 47 | # define CLOCK_MONOTONIC 1 | |
| 3fc6935a RM |
48 | /* High-resolution timer from the CPU. */ |
| 49 | # define CLOCK_PROCESS_CPUTIME_ID 2 | |
| 50 | /* Thread-specific CPU-time clock. */ | |
| 51 | # define CLOCK_THREAD_CPUTIME_ID 3 | |
| 89a4419c UD |
52 | /* Monotonic system-wide clock, not adjusted for frequency scaling. */ |
| 53 | # define CLOCK_MONOTONIC_RAW 4 | |
| 54 | /* Identifier for system-wide realtime clock, updated only on ticks. */ | |
| 55 | # define CLOCK_REALTIME_COARSE 5 | |
| 56 | /* Monotonic system-wide clock, updated only on ticks. */ | |
| 57 | # define CLOCK_MONOTONIC_COARSE 6 | |
| be1dd949 UD |
58 | |
| 59 | /* Flag to indicate time is absolute. */ | |
| 3fc6935a | 60 | # define TIMER_ABSTIME 1 |
| be1dd949 UD |
61 | # endif |
| 62 | ||
| f4017d20 UD |
63 | # endif /* bits/time.h */ |
| 64 | #endif | |
| 65 | ||
| f0e44959 UD |
66 | #ifdef __need_timeval |
| 67 | # undef __need_timeval | |
| 68 | # ifndef _STRUCT_TIMEVAL | |
| 69 | # define _STRUCT_TIMEVAL 1 | |
| 3fc6935a RM |
70 | # include <bits/types.h> |
| 71 | ||
| f0e44959 UD |
72 | /* A time value that is accurate to the nearest |
| 73 | microsecond but also has a range of years. */ | |
| 74 | struct timeval | |
| 75 | { | |
| d71b808a | 76 | __time_t tv_sec; /* Seconds. */ |
| 57fb9b38 | 77 | __suseconds_t tv_usec; /* Microseconds. */ |
| f0e44959 UD |
78 | }; |
| 79 | # endif /* struct timeval */ | |
| 80 | #endif /* need timeval */ |