H5Bpkg.h

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Copyright by The HDF Group.                                               *
 * Copyright by the Board of Trustees of the University of Illinois.         *
 * All rights reserved.                                                      *
 *                                                                           *
 * This file is part of HDF5.  The full HDF5 copyright notice, including     *
 * terms governing use, modification, and redistribution, is contained in    *
 * the files COPYING and Copyright.html.  COPYING can be found at the root   *
 * of the source code distribution tree; Copyright.html can be found at the  *
 * root level of an installed copy of the electronic HDF5 document set and   *
 * is linked from the top-level documents page.  It can also be found at     *
 * http://hdfgroup.org/HDF5/doc/Copyright.html.  If you do not have          *
 * access to either file, you may request a copy from help@hdfgroup.org.     *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/*
 * Programmer:  Quincey Koziol <koziol@ncsa.uiuc.edu>
 *              Thursday, May 15, 2003
 *
 * Purpose:     This file contains declarations which are visible only within
 *              the H5B package.  Source files outside the H5B package should
 *              include H5Bprivate.h instead.
 */
#ifndef H5B_PACKAGE
#error "Do not include this file outside the H5B package!"
#endif

#ifndef _H5Bpkg_H
#define _H5Bpkg_H

/* Get package's private header */
#include "H5Bprivate.h"

/* Other private headers needed by this file */

/**************************/
/* Package Private Macros */
/**************************/

/* Get the native key at a given index */
#define H5B_NKEY(b, shared, idx)  ((b)->native + (shared)->nkey[(idx)])


/****************************/
/* Package Private Typedefs */
/****************************/

/* The B-tree node as stored in memory...  */
struct H5B_t {
    H5AC_info_t cache_info; /* Information for H5AC cache functions, _must_ be */
                            /* first field in structure */
    H5RC_t              *rc_shared;     /*ref-counted shared info            */
    unsigned            level;          /*node level                         */
    unsigned            nchildren;      /*number of child pointers           */
    haddr_t             left;           /*address of left sibling            */
    haddr_t             right;          /*address of right sibling           */
    uint8_t             *native;        /*array of keys in native format     */
    haddr_t             *child;         /*2k child pointers                  */
};

/*****************************/
/* Package Private Variables */
/*****************************/

/* H5B header inherits cache-like properties from H5AC */
H5_DLLVAR const H5AC_class_t H5AC_BT[1];

/* Declare a free list to manage the haddr_t sequence information */
H5FL_SEQ_EXTERN(haddr_t);

/* Declare a PQ free list to manage the native block information */
H5FL_BLK_EXTERN(native_block);

/* Declare a free list to manage the H5B_t struct */
H5FL_EXTERN(H5B_t);

/******************************/
/* Package Private Prototypes */
/******************************/
H5_DLL herr_t H5B_dest(H5F_t *f, H5B_t *b);
#ifdef H5B_DEBUG
herr_t H5B_assert(H5F_t *f, hid_t dxpl_id, haddr_t addr, const H5B_class_t *type,
                         void *udata);
#endif

#endif /*_H5Bpkg_H*/