FreeBSD/Linux Kernel Cross Reference
sys/sys/specificdata.h

     /*      $NetBSD: specificdata.h,v 1.2 2006/10/11 05:37:32 thorpej Exp $ */
     
     /*-
      * Copyright (c) 2006 The NetBSD Foundation, Inc.
      * All rights reserved.
      *
      * This code is derived from software contributed to The NetBSD Foundation
      * by Jason R. Thorpe.
      *
     * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *      This product includes software developed by the NetBSD
     *      Foundation, Inc. and its contributors.
     * 4. Neither the name of The NetBSD Foundation nor the names of its
     *    contributors may be used to endorse or promote products derived
     *    from this software without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     * POSSIBILITY OF SUCH DAMAGE.
     */
    
    #ifndef _SYS_SPECIFICDATA_H_
    #define _SYS_SPECIFICDATA_H_
    
    #include <sys/lock.h>
    
    typedef unsigned int specificdata_key_t;
    typedef void (*specificdata_dtor_t)(void *);
    typedef struct specificdata_domain *specificdata_domain_t;
    typedef struct specificdata_container *specificdata_container_t;
    
    typedef struct {
            specificdata_container_t specdataref_container;
            struct simplelock specdataref_slock;
    } specificdata_reference;
    
    specificdata_domain_t   specificdata_domain_create(void);
    void                    specificdata_domain_delete(specificdata_domain_t);
    
    int     specificdata_key_create(specificdata_domain_t,
                                    specificdata_key_t *, specificdata_dtor_t);
    void    specificdata_key_delete(specificdata_domain_t, specificdata_key_t);
    
    int     specificdata_init(specificdata_domain_t, specificdata_reference *);
    void    specificdata_fini(specificdata_domain_t, specificdata_reference *);
    
    void *  specificdata_getspecific(specificdata_domain_t,
                                     specificdata_reference *, specificdata_key_t);
    void *  specificdata_getspecific_unlocked(specificdata_domain_t,
                                              specificdata_reference *,
                                              specificdata_key_t);
    void    specificdata_setspecific(specificdata_domain_t,
                                     specificdata_reference *, specificdata_key_t,
                                     void *);
    int     specificdata_setspecific_nowait(specificdata_domain_t,
                                            specificdata_reference *,
                                            specificdata_key_t, void *);
    
    #endif /* _SYS_SPECIFICDATA_H_ */

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