diff options
Diffstat (limited to 'bits/time.h')
| -rw-r--r-- | bits/time.h | 31 |
1 files changed, 25 insertions, 6 deletions
diff --git a/bits/time.h b/bits/time.h index 703dfc752a..df0202a132 100644 --- a/bits/time.h +++ b/bits/time.h @@ -1,5 +1,5 @@ -/* System-dependent timing definitions. Stub version. - Copyright (C) 1996, 1997, 1999, 2000 Free Software Foundation, Inc. +/* 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 @@ -25,24 +25,43 @@ # ifndef _BITS_TIME_H # define _BITS_TIME_H 1 -# define CLOCKS_PER_SEC 60 +/* 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 +# 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 +# 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 |