initial import of NetBSD tree

1 files changed, 63 insertions, 0 deletions

diff --git a/lib/libc/gen/clock.c b/lib/libc/gen/clock.c
new file mode 100644
index 00000000000..ad60e8ea3bc
--- /dev/null
+++ b/lib/libc/gen/clock.c
@@ -0,0 +1,63 @@
+/*	$NetBSD: clock.c,v 1.5 1995/02/25 15:39:09 cgd Exp $	*/
+
+/*
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+#if 0
+static char sccsid[] = "@(#)clock.c	8.1 (Berkeley) 6/4/93";
+#else
+static char rcsid[] = "$NetBSD: clock.c,v 1.5 1995/02/25 15:39:09 cgd Exp $";
+#endif
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/time.h>
+#include <sys/resource.h>
+
+/*
+ * Convert usec to clock ticks; could do (usec * CLOCKS_PER_SEC) / 1000000,
+ * but this would overflow if we switch to nanosec.
+ */
+#define	CONVTCK(r)	(r.tv_sec * CLOCKS_PER_SEC + \
+			 r.tv_usec / (1000000 / CLOCKS_PER_SEC))
+
+clock_t
+clock()
+{
+	struct rusage ru;
+
+	if (getrusage(RUSAGE_SELF, &ru))
+		return ((clock_t) -1);
+	return((clock_t)((CONVTCK(ru.ru_utime) + CONVTCK(ru.ru_stime))));
+}