xref: /illumos-gate/usr/src/uts/common/sys/dktp/queue.h (revision 8b80e8cb6855118d46f605e91b5ed4ce83417395)
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 http://www.opensolaris.org/os/licensing.
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 2005 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #ifndef _SYS_DKTP_QUEUE_H
28 #define	_SYS_DKTP_QUEUE_H
29 
30 #pragma ident	"%Z%%M%	%I%	%E% SMI"
31 
32 #ifdef	__cplusplus
33 extern "C" {
34 #endif
35 
36 struct	que_obj {
37 	opaque_t		que_data;
38 	struct que_objops	*que_ops;
39 };
40 
41 struct	que_objops {
42 	int	(*que_init)(struct que_data *, void *);
43 	int	(*que_free)(struct que_obj *);
44 	int	(*que_ins)(struct que_data *, struct buf *);
45 	struct buf *(*que_del)(struct que_data *);
46 	void	*que_res[2];
47 };
48 
49 struct que_obj *qfifo_create();
50 struct que_obj *qmerge_create();
51 struct que_obj *qsort_create();
52 struct que_obj *qtag_create();
53 
54 #define	QUE_INIT(X, lkarg) (*((struct que_obj *)(X))->que_ops->que_init) \
55 	(((struct que_obj *)(X))->que_data, (lkarg))
56 #define	QUE_FREE(X) (*((struct que_obj *)(X))->que_ops->que_free) ((X))
57 #define	QUE_ADD(X, bp) (*((struct que_obj *)(X))->que_ops->que_ins) \
58 	(((struct que_obj *)(X))->que_data, (bp))
59 #define	QUE_DEL(X) (*((struct que_obj *)(X))->que_ops->que_del) \
60 	(((struct que_obj *)(X))->que_data)
61 
62 #ifdef	__cplusplus
63 }
64 #endif
65 
66 #endif	/* _SYS_DKTP_QUEUE_H */
67