projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 3fc6935a | 1 | /* System-dependent timing definitions. Generic version. |
| 04277e02 | 2 | Copyright (C) 1996-2019 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 | ||
| 05b68e14 ZW |
23 | #ifndef _BITS_TIME_H |
| 24 | #define _BITS_TIME_H 1 | |
| 25 | ||
| 26 | #include <bits/types.h> | |
| f4017d20 | 27 | |
| 57ada0e7 L |
28 | /* ISO/IEC 9899:1999 7.23.1: Components of time |
| 29 | The macro `CLOCKS_PER_SEC' is an expression with type `clock_t' that is | |
| 30 | the number per second of the value returned by the `clock' function. */ | |
| 3fc6935a RM |
31 | /* CAE XSH, Issue 4, Version 2: <time.h> |
| 32 | The value of CLOCKS_PER_SEC is required to be 1 million on all | |
| 33 | XSI-conformant systems. */ | |
| 05b68e14 | 34 | #define CLOCKS_PER_SEC ((__clock_t) 1000000) |
| 3fc6935a | 35 | |
| 05b68e14 ZW |
36 | #if (!defined __STRICT_ANSI__ || defined __USE_POSIX) \ |
| 37 | && !defined __USE_XOPEN2K | |
| 3fc6935a RM |
38 | /* Even though CLOCKS_PER_SEC has such a strange value CLK_TCK |
| 39 | presents the real value for clock ticks per second for the system. */ | |
| 3fc6935a | 40 | extern long int __sysconf (int); |
| 05b68e14 ZW |
41 | # define CLK_TCK ((__clock_t) __sysconf (2)) /* 2 is _SC_CLK_TCK */ |
| 42 | #endif | |
| f4017d20 | 43 | |
| 05b68e14 | 44 | #ifdef __USE_POSIX199309 |
| be1dd949 | 45 | /* Identifier for system-wide realtime clock. */ |
| 05b68e14 | 46 | # define CLOCK_REALTIME 0 |
| 1e543c0c | 47 | /* Monotonic system-wide clock. */ |
| 05b68e14 | 48 | # define CLOCK_MONOTONIC 1 |
| 3fc6935a | 49 | /* High-resolution timer from the CPU. */ |
| 05b68e14 | 50 | # define CLOCK_PROCESS_CPUTIME_ID 2 |
| 3fc6935a | 51 | /* Thread-specific CPU-time clock. */ |
| 05b68e14 | 52 | # define CLOCK_THREAD_CPUTIME_ID 3 |
| 89a4419c | 53 | /* Monotonic system-wide clock, not adjusted for frequency scaling. */ |
| 05b68e14 | 54 | # define CLOCK_MONOTONIC_RAW 4 |
| 89a4419c | 55 | /* Identifier for system-wide realtime clock, updated only on ticks. */ |
| 05b68e14 | 56 | # define CLOCK_REALTIME_COARSE 5 |
| 89a4419c | 57 | /* Monotonic system-wide clock, updated only on ticks. */ |
| 05b68e14 | 58 | # define CLOCK_MONOTONIC_COARSE 6 |
| be1dd949 UD |
59 | |
| 60 | /* Flag to indicate time is absolute. */ | |
| 05b68e14 | 61 | # define TIMER_ABSTIME 1 |
| f4017d20 UD |
62 | #endif |
| 63 | ||
| 05b68e14 | 64 | #endif /* bits/time.h */ |