FreeBSD/Linux Kernel Cross Reference
sys/libprop/prop_stack.h

     /* $NetBSD: prop_stack.h,v 1.2 2007/08/30 12:23:54 joerg Exp $ */
     
     /*-
      * Copyright (c) 2007 Joerg Sonnenberger <joerg@NetBSD.org>.
      * All rights reserved.
      *
      * 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.
     *
     * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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
     * COPYRIGHT HOLDERS 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 _PROP_STACK_H
    #define _PROP_STACK_H
    
    #include <sys/queue.h>
    
    #include <libprop/prop_object.h>
    
    struct _prop_stack_intern_elem {
            prop_object_t object;
            void *object_data[3];
    };
    
    struct _prop_stack_extern_elem {
            SLIST_ENTRY(_prop_stack_extern_elem) stack_link;
            prop_object_t object;
            void *object_data[3];
    };
    
    #define PROP_STACK_INTERN_ELEMS 16
    
    struct _prop_stack {
            struct _prop_stack_intern_elem intern_elems[PROP_STACK_INTERN_ELEMS];
            size_t used_intern_elems;
            SLIST_HEAD(, _prop_stack_extern_elem) extern_elems;
    };
    
    typedef struct _prop_stack *prop_stack_t;
    
    void    _prop_stack_init(prop_stack_t);
    bool    _prop_stack_push(prop_stack_t, prop_object_t, void *, void *, void *);
    bool    _prop_stack_pop(prop_stack_t, prop_object_t *, void **, void **, void **);
    
    #endif

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