xref: /netbsd-src/lib/libpthread/pthread_getcpuclockid.c (revision 82d56013d7b633d116a93943de88e08335357a7c)
1 /*	$NetBSD: pthread_getcpuclockid.c,v 1.3 2020/01/29 16:03:44 kamil Exp $	*/
2 
3 /*-
4  * Copyright (c) 2016 The NetBSD Foundation, Inc.
5  * All rights reserved.
6  *
7  * This code is derived from software contributed to The NetBSD Foundation
8  * by Christos Zoulas.
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions
12  * are met:
13  * 1. Redistributions of source code must retain the above copyright
14  *    notice, this list of conditions and the following disclaimer.
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in the
17  *    documentation and/or other materials provided with the distribution.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29  * POSSIBILITY OF SUCH DAMAGE.
30  */
31 #include <sys/cdefs.h>
32 #if defined(LIBC_SCCS) && !defined(lint)
33 __RCSID("$NetBSD: pthread_getcpuclockid.c,v 1.3 2020/01/29 16:03:44 kamil Exp $");
34 #endif /* LIBC_SCCS and not lint */
35 
36 #include <sys/types.h>
37 #include <errno.h>
38 #include <pthread.h>
39 #include <time.h>
40 
41 #include "pthread_int.h"
42 
43 int
44 pthread_getcpuclockid(pthread_t thread, clockid_t *clock_id)
45 {
46 	int error = 0, saved_errno;
47 
48 	pthread__error(EINVAL, "Invalid thread",
49 	    thread->pt_magic == PT_MAGIC);
50 
51 	saved_errno = errno;
52 	if (clock_getcpuclockid2(P_LWPID, (id_t)thread->pt_lid, clock_id) == -1)
53 		error = errno;
54 	errno = saved_errno;
55 
56 	return error;
57 }
58