xref: /titanic_41/usr/src/uts/common/sys/refstr.h (revision 1d4b38e0077763e7c9b20768eacb841957e787bc)
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 (c) 1999 by Sun Microsystems, Inc.
24  * All rights reserved.
25  */
26 
27 #ifndef _SYS_REFSTR_H
28 #define	_SYS_REFSTR_H
29 
30 #pragma ident	"%Z%%M%	%I%	%E% SMI"
31 
32 #ifdef	__cplusplus
33 extern "C" {
34 #endif
35 
36 /*
37  * Strings with reference counts.
38  * The 'struct refstr' definition is private to the refstr.c module.
39  */
40 
41 typedef struct refstr refstr_t;
42 
43 #if	defined(_KERNEL)
44 
45 refstr_t	*refstr_alloc(const char *);
46 const char	*refstr_value(refstr_t *);
47 void		refstr_hold(refstr_t *);
48 void		refstr_rele(refstr_t *);
49 
50 #endif	/* defined(_KERNEL) */
51 
52 #ifdef	__cplusplus
53 }
54 #endif
55 
56 #endif	/* _SYS_REFSTR_H */
57