summaryrefslogtreecommitdiffstats
path: root/lib/libc/gen/times.c
diff options
context:
space:
mode:
Diffstat (limited to 'lib/libc/gen/times.c')
-rw-r--r--lib/libc/gen/times.c67
1 files changed, 67 insertions, 0 deletions
diff --git a/lib/libc/gen/times.c b/lib/libc/gen/times.c
new file mode 100644
index 0000000..c145d0a
--- /dev/null
+++ b/lib/libc/gen/times.c
@@ -0,0 +1,67 @@
+/*-
+ * Copyright (c) 1990, 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)
+static char sccsid[] = "@(#)times.c 8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/time.h>
+#include <sys/times.h>
+#include <sys/resource.h>
+
+/*
+ * Convert usec to clock ticks; could do (usec * CLK_TCK) / 1000000,
+ * but this would overflow if we switch to nanosec.
+ */
+#define CONVTCK(r) (r.tv_sec * CLK_TCK + r.tv_usec / (1000000 / CLK_TCK))
+
+clock_t
+times(tp)
+ register struct tms *tp;
+{
+ struct rusage ru;
+ struct timeval t;
+
+ if (getrusage(RUSAGE_SELF, &ru) < 0)
+ return ((clock_t)-1);
+ tp->tms_utime = CONVTCK(ru.ru_utime);
+ tp->tms_stime = CONVTCK(ru.ru_stime);
+ if (getrusage(RUSAGE_CHILDREN, &ru) < 0)
+ return ((clock_t)-1);
+ tp->tms_cutime = CONVTCK(ru.ru_utime);
+ tp->tms_cstime = CONVTCK(ru.ru_stime);
+ if (gettimeofday(&t, (struct timezone *)0))
+ return ((clock_t)-1);
+ return ((clock_t)(CONVTCK(t)));
+}
OpenPOWER on IntegriCloud