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      1 /*	$NetBSD: specificdata.h,v 1.4 2008/04/28 20:24:11 martin Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2006 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Jason R. Thorpe.
      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 
     32 #ifndef _SYS_SPECIFICDATA_H_
     33 #define	_SYS_SPECIFICDATA_H_
     34 
     35 #include <sys/mutex.h>
     36 
     37 typedef unsigned int specificdata_key_t;
     38 typedef void (*specificdata_dtor_t)(void *);
     39 typedef struct specificdata_domain *specificdata_domain_t;
     40 typedef struct specificdata_container *specificdata_container_t;
     41 
     42 typedef struct {
     43 	specificdata_container_t specdataref_container;
     44 	kmutex_t specdataref_lock;
     45 } specificdata_reference;
     46 
     47 specificdata_domain_t	specificdata_domain_create(void);
     48 void			specificdata_domain_delete(specificdata_domain_t);
     49 
     50 int	specificdata_key_create(specificdata_domain_t,
     51 				specificdata_key_t *, specificdata_dtor_t);
     52 void	specificdata_key_delete(specificdata_domain_t, specificdata_key_t);
     53 
     54 int	specificdata_init(specificdata_domain_t, specificdata_reference *);
     55 void	specificdata_fini(specificdata_domain_t, specificdata_reference *);
     56 
     57 void *	specificdata_getspecific(specificdata_domain_t,
     58 				 specificdata_reference *, specificdata_key_t);
     59 void *	specificdata_getspecific_unlocked(specificdata_domain_t,
     60 					  specificdata_reference *,
     61 					  specificdata_key_t);
     62 void	specificdata_setspecific(specificdata_domain_t,
     63 				 specificdata_reference *, specificdata_key_t,
     64 				 void *);
     65 int	specificdata_setspecific_nowait(specificdata_domain_t,
     66 					specificdata_reference *,
     67 					specificdata_key_t, void *);
     68 
     69 #endif /* _SYS_SPECIFICDATA_H_ */
     70