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author | cvpcs <root@cvpcs.org> | 2010-06-02 11:02:31 -0500 |
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committer | cvpcs <root@cvpcs.org> | 2010-06-02 11:02:31 -0500 |
commit | 772f20abb0a3a0979c440114bf3a1cff5b3cef03 (patch) | |
tree | 3384b9291d73a12542c526a8557218c7435491b0 /lib/sh/clktck.c | |
download | external_bash-772f20abb0a3a0979c440114bf3a1cff5b3cef03.zip external_bash-772f20abb0a3a0979c440114bf3a1cff5b3cef03.tar.gz external_bash-772f20abb0a3a0979c440114bf3a1cff5b3cef03.tar.bz2 |
initial import of bash 4.1
Diffstat (limited to 'lib/sh/clktck.c')
-rw-r--r-- | lib/sh/clktck.c | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/lib/sh/clktck.c b/lib/sh/clktck.c new file mode 100644 index 0000000..096ce06 --- /dev/null +++ b/lib/sh/clktck.c @@ -0,0 +1,59 @@ +/* clktck.c - get the value of CLK_TCK. */ + +/* Copyright (C) 1997 Free Software Foundation, Inc. + + This file is part of GNU Bash, the Bourne Again SHell. + + Bash is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + Bash 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 General Public License for more details. + + You should have received a copy of the GNU General Public License + along with Bash. If not, see <http://www.gnu.org/licenses/>. +*/ + +#include <config.h> + +#include <bashtypes.h> +#include <sys/param.h> + +#if defined (HAVE_UNISTD_H) +# include <unistd.h> +#endif + +#if defined (HAVE_LIMITS_H) +# include <limits.h> +#endif + +#if !defined (HAVE_SYSCONF) || !defined (_SC_CLK_TCK) +# if !defined (CLK_TCK) +# if defined (HZ) +# define CLK_TCK HZ +# else +# define CLK_TCK 60 +# endif +# endif /* !CLK_TCK */ +#endif /* !HAVE_SYSCONF && !_SC_CLK_TCK */ + +long +get_clk_tck () +{ + static long retval = 0; + + if (retval != 0) + return (retval); + +#if defined (HAVE_SYSCONF) && defined (_SC_CLK_TCK) + retval = sysconf (_SC_CLK_TCK); +#else /* !SYSCONF || !_SC_CLK_TCK */ + retval = CLK_TCK; +#endif /* !SYSCONF || !_SC_CLK_TCK */ + + return (retval); +} |