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-rw-r--r--lib/sh/clktck.c61
1 files changed, 61 insertions, 0 deletions
diff --git a/lib/sh/clktck.c b/lib/sh/clktck.c
new file mode 100644
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--- /dev/null
+++ b/lib/sh/clktck.c
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+/* 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>
+#if defined (HAVE_SYS_PARAM_H)
+# include <sys/param.h>
+#endif
+
+#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);
+}