xref: /freebsd/sys/contrib/openzfs/lib/libspl/include/sys/cmn_err.h (revision 7fdf597e96a02165cfe22ff357b857d5fa15ed8a)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or https://opensource.org/licenses/CDDL-1.0.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*
23  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #ifndef _LIBSPL_SYS_CMN_ERR_H
28 #define	_LIBSPL_SYS_CMN_ERR_H
29 
30 #include <atomic.h>
31 
32 #define	cmn_err_once(ce, ...)				\
33 do {							\
34 	static volatile uint32_t printed = 0;		\
35 	if (atomic_cas_32(&printed, 0, 1) == 0) {	\
36 		cmn_err(ce, __VA_ARGS__);		\
37 	}						\
38 } while (0)
39 
40 #define	vcmn_err_once(ce, fmt, ap)			\
41 do {							\
42 	static volatile uint32_t printed = 0;		\
43 	if (atomic_cas_32(&printed, 0, 1) == 0) {	\
44 		vcmn_err(ce, fmt, ap);			\
45 	}						\
46 } while (0)
47 
48 #define	zcmn_err_once(zone, ce, ...)			\
49 do {							\
50 	static volatile uint32_t printed = 0;		\
51 	if (atomic_cas_32(&printed, 0, 1) == 0) {	\
52 		zcmn_err(zone, ce, __VA_ARGS__);	\
53 	}						\
54 } while (0)
55 
56 #define	vzcmn_err_once(zone, ce, fmt, ap)		\
57 do {							\
58 	static volatile uint32_t printed = 0;		\
59 	if (atomic_cas_32(&printed, 0, 1) == 0) {	\
60 		vzcmn_err(zone, ce, fmt, ap);		\
61 	}						\
62 } while (0)
63 
64 #endif
65