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      1 /*	$NetBSD: pthread_getcpuclockid.c,v 1.4 2022/02/12 14:59:32 riastradh 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 1.4 2022/02/12 14:59:32 riastradh Exp $");
     34 #endif /* LIBC_SCCS and not lint */
     35 
     36 /* Need to use libc-private names for atomic operations. */
     37 #include "../../common/lib/libc/atomic/atomic_op_namespace.h"
     38 
     39 #include <sys/types.h>
     40 #include <errno.h>
     41 #include <pthread.h>
     42 #include <time.h>
     43 
     44 #include "pthread_int.h"
     45 
     46 int
     47 pthread_getcpuclockid(pthread_t thread, clockid_t *clock_id)
     48 {
     49 	int error = 0, saved_errno;
     50 
     51 	pthread__error(EINVAL, "Invalid thread",
     52 	    thread->pt_magic == PT_MAGIC);
     53 
     54 	saved_errno = errno;
     55 	if (clock_getcpuclockid2(P_LWPID, (id_t)thread->pt_lid, clock_id) == -1)
     56 		error = errno;
     57 	errno = saved_errno;
     58 
     59 	return error;
     60 }
     61