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. 4 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. 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 13 Lesser General Public License for more details. 14 15 You should have received a copy of the GNU Lesser General Public 16 License along with the GNU C Library; if not, write to the Free 17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 18 02111-1307 USA. */ 19 20/* 21 * Never include this file directly; use <time.h> instead. 22 */ 23 24#ifndef __need_timeval 25# ifndef _BITS_TIME_H 26# define _BITS_TIME_H 1 27 28/* ISO/IEC 9899:1990 7.12.1: <time.h> 29 The macro `CLOCKS_PER_SEC' is the number per second of the value 30 returned by the `clock' function. */ 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. */ 34# define CLOCKS_PER_SEC 1000000l 35 36/* Get the arch-specific value of __UCLIBC_CLK_TCK_CONST used for CLK_TCK 37 * in sysconf() and clock(). */ 38#include <bits/uClibc_clk_tck.h> 39 40# if !defined __STRICT_ANSI__ && !defined __USE_XOPEN2K 41/* Even though CLOCKS_PER_SEC has such a strange value CLK_TCK 42 presents the real value for clock ticks per second for the system. */ 43# include <bits/types.h> 44/* Note (uClibc): glibc #defines CLK_TCK as a sysconf() call. */ 45# define CLK_TCK ((__clock_t) __UCLIBC_CLK_TCK_CONST) 46# endif 47 48# ifdef __USE_POSIX199309 49/* Identifier for system-wide realtime clock. */ 50# define CLOCK_REALTIME 0 51/* Monotonic system-wide clock. */ 52# define CLOCK_MONOTONIC 1 53/* High-resolution timer from the CPU. */ 54# define CLOCK_PROCESS_CPUTIME_ID 2 55/* Thread-specific CPU-time clock. */ 56# define CLOCK_THREAD_CPUTIME_ID 3 57 58/* Flag to indicate time is absolute. */ 59# define TIMER_ABSTIME 1 60# endif 61 62# endif /* bits/time.h */ 63#endif 64 65#ifdef __need_timeval 66# undef __need_timeval 67# ifndef _STRUCT_TIMEVAL 68# define _STRUCT_TIMEVAL 1 69# include <bits/types.h> 70 71/* A time value that is accurate to the nearest 72 microsecond but also has a range of years. */ 73struct timeval 74 { 75 __time_t tv_sec; /* Seconds. */ 76 __suseconds_t tv_usec; /* Microseconds. */ 77 }; 78# endif /* struct timeval */ 79#endif /* need timeval */ 80