/* System-dependent timing definitions. Generic version. Copyright (C) 1996,1997,1999,2000,2001,2002 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library 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 Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ /* * Never include this file directly; use <time.h> instead. */ #ifndef __need_timeval # ifndef _BITS_TIME_H # define _BITS_TIME_H 1 /* ISO/IEC 9899:1990 7.12.1: <time.h> The macro `CLOCKS_PER_SEC' is the number per second of the value returned by the `clock' function. */ /* CAE XSH, Issue 4, Version 2: <time.h> The value of CLOCKS_PER_SEC is required to be 1 million on all XSI-conformant systems. */ # define CLOCKS_PER_SEC 1000000l # if !defined __STRICT_ANSI__ && !defined __USE_XOPEN2K /* Even though CLOCKS_PER_SEC has such a strange value CLK_TCK presents the real value for clock ticks per second for the system. */ # include <bits/types.h> extern long int __sysconf (int); # define CLK_TCK ((__clock_t) __sysconf (2)) /* 2 is _SC_CLK_TCK */ # endif # ifdef __USE_POSIX199309 /* Identifier for system-wide realtime clock. */ # define CLOCK_REALTIME 0 /* High-resolution timer from the CPU. */ # define CLOCK_PROCESS_CPUTIME_ID 2 /* Thread-specific CPU-time clock. */ # define CLOCK_THREAD_CPUTIME_ID 3 /* Flag to indicate time is absolute. */ # define TIMER_ABSTIME 1 # endif # endif /* bits/time.h */ #endif #ifdef __need_timeval # undef __need_timeval # ifndef _STRUCT_TIMEVAL # define _STRUCT_TIMEVAL 1 # include <bits/types.h> /* A time value that is accurate to the nearest microsecond but also has a range of years. */ struct timeval { __time_t tv_sec; /* Seconds. */ __suseconds_t tv_usec; /* Microseconds. */ }; # endif /* struct timeval */ #endif /* need timeval */