Add support for the _POSIX_CPUTIME and _POSIX_THREAD_CPUTIME options,

including CLOCK_{PROCESS,THREAD}_CPUTIME_ID constants and
{clock,pthread}_getcpuclockid() functions.

Worked out at t2k13 with help from tedu@ and matthew@ and testing by aja@
ok matthew@

1 files changed, 31 insertions, 0 deletions

diff --git a/lib/libc/gen/clock_getcpuclockid.c b/lib/libc/gen/clock_getcpuclockid.c
new file mode 100644
index 00000000000..f0c18aac1f5
--- /dev/null
+++ b/lib/libc/gen/clock_getcpuclockid.c
@@ -0,0 +1,31 @@
+/*	$OpenBSD: clock_getcpuclockid.c,v 1.1 2013/06/17 19:11:54 guenther Exp $ */
+/*
+ * Copyright (c) 2013 Philip Guenther <guenther@openbsd.org>
+ * All Rights Reserved.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <time.h>
+#include <unistd.h>
+#include <errno.h>
+
+int
+clock_getcpuclockid(pid_t pid, clockid_t *clock_id)
+{
+	if (pid != 0 && pid != getpid())
+		return (EPERM);
+
+	*clock_id = CLOCK_PROCESS_CPUTIME_ID;
+	return (0);
+}