From c96a844f5209ee078b282b1bec690f80f7411ada Mon Sep 17 00:00:00 2001 From: Manuel Novoa III Date: Mon, 15 Jul 2002 16:26:52 +0000 Subject: Clean up CLK_TCK situation. clock() and sysconf() now use an arch-specific constant value defined in bits/uClibc_clk_tck.h. Default is 100 (common/bits) but alpha uses 1024 following glibc. Override per arch as necessary. --- libc/sysdeps/linux/alpha/bits/uClibc_clk_tck.h | 8 +++ libc/sysdeps/linux/common/bits/time.h | 12 +++- libc/sysdeps/linux/common/bits/uClibc_clk_tck.h | 8 +++ libc/sysdeps/linux/i386/bits/time.h | 73 ------------------------- libc/sysdeps/linux/sparc/bits/time.h | 73 ------------------------- 5 files changed, 26 insertions(+), 148 deletions(-) create mode 100644 libc/sysdeps/linux/alpha/bits/uClibc_clk_tck.h create mode 100644 libc/sysdeps/linux/common/bits/uClibc_clk_tck.h delete mode 100644 libc/sysdeps/linux/i386/bits/time.h delete mode 100644 libc/sysdeps/linux/sparc/bits/time.h (limited to 'libc/sysdeps') diff --git a/libc/sysdeps/linux/alpha/bits/uClibc_clk_tck.h b/libc/sysdeps/linux/alpha/bits/uClibc_clk_tck.h new file mode 100644 index 000000000..f7cd69aef --- /dev/null +++ b/libc/sysdeps/linux/alpha/bits/uClibc_clk_tck.h @@ -0,0 +1,8 @@ +/* Follow glibc's example and use 1024 for CLK_TCK to implement sysconf and + * clock.c instead of the normal default of 100. + * + * WARNING: It is assumed that this is a constant integer value usable in + * preprocessor conditionals!!! + */ + +#define __UCLIBC_CLK_TCK_CONST 1024 diff --git a/libc/sysdeps/linux/common/bits/time.h b/libc/sysdeps/linux/common/bits/time.h index 2a6873f00..e551c23a4 100644 --- a/libc/sysdeps/linux/common/bits/time.h +++ b/libc/sysdeps/linux/common/bits/time.h @@ -33,17 +33,25 @@ XSI-conformant systems. */ # define CLOCKS_PER_SEC 1000000l +/* Get the arch-specific value of __UCLIBC_CLK_TCK_CONST used for CLK_TCK + * in sysconf() and clock(). */ +#include + # 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 -extern long int __sysconf (int); -# define CLK_TCK ((__clock_t) __sysconf (2)) /* 2 is _SC_CLK_TCK */ +/* Note (uClibc): glibc #defines CLK_TCK as a sysconf() call. */ +# define CLK_TCK ((__clock_t) __UCLIBC_CLK_TCK_CONST) # 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 diff --git a/libc/sysdeps/linux/common/bits/uClibc_clk_tck.h b/libc/sysdeps/linux/common/bits/uClibc_clk_tck.h new file mode 100644 index 000000000..00b77bfc8 --- /dev/null +++ b/libc/sysdeps/linux/common/bits/uClibc_clk_tck.h @@ -0,0 +1,8 @@ +/* Use a default of 100 for CLK_TCK to implement sysconf() and clock(). + * Override this by supplying an arch-specific version of this header file. + * + * WARNING: It is assumed that this is a constant integer value usable in + * preprocessor conditionals!!! + */ + +#define __UCLIBC_CLK_TCK_CONST 100 diff --git a/libc/sysdeps/linux/i386/bits/time.h b/libc/sysdeps/linux/i386/bits/time.h deleted file mode 100644 index a1b1abc8f..000000000 --- a/libc/sysdeps/linux/i386/bits/time.h +++ /dev/null @@ -1,73 +0,0 @@ -/* System-dependent timing definitions. Linux/x86 version. - Copyright (C) 1996, 1997, 1999, 2000, 2001 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 instead. - */ - -#ifndef __need_timeval -# ifndef _BITS_TIME_H -# define _BITS_TIME_H 1 - -/* ISO/IEC 9899:1990 7.12.1: - The macro `CLOCKS_PER_SEC' is the number per second of the value - returned by the `clock' function. */ -/* CAE XSH, Issue 4, Version 2: - 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 -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 - -/* 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 */ diff --git a/libc/sysdeps/linux/sparc/bits/time.h b/libc/sysdeps/linux/sparc/bits/time.h deleted file mode 100644 index 167cef79f..000000000 --- a/libc/sysdeps/linux/sparc/bits/time.h +++ /dev/null @@ -1,73 +0,0 @@ -/* System-dependent timing definitions. Linux/SPARC version. - Copyright (C) 1996, 1997, 1999, 2000, 2001 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 instead. - */ - -#ifndef __need_timeval -# ifndef _BITS_TIME_H -# define _BITS_TIME_H 1 - -/* ISO/IEC 9899:1990 7.12.1: - The macro `CLOCKS_PER_SEC' is the number per second of the value - returned by the `clock' function. */ -/* CAE XSH, Issue 4, Version 2: - 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 -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 - -/* 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 */ -- cgit v1.2.3