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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright by The HDF Group. *
* 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 COPYING file, which can be found at the root of the source code *
* distribution tree, or in https://www.hdfgroup.org/licenses. *
* If you do not have access to either file, you may request a copy from *
* help@hdfgroup.org. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*
* Purpose: This file contains declarations which are visible only within
* the H5B package. Source files outside the H5B package should
* include H5Bprivate.h instead.
*/
#if !(defined H5B_FRIEND || defined H5B_MODULE)
#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 */
#include "H5ACprivate.h" /* Metadata cache */
#include "H5FLprivate.h" /* Free Lists */
/**************************/
/* Package Private Macros */
/**************************/
/* Get the native key at a given index */
#define H5B_NKEY(b, shared, idx) ((b)->native + (shared)->nkey[(idx)])
/* # of bits for node level: 1 byte */
#define LEVEL_BITS 8
/****************************/
/* Package Private Typedefs */
/****************************/
/* The B-tree node as stored in memory */
typedef struct H5B_t {
H5AC_info_t cache_info; /* Information for H5AC cache functions */
/* MUST be first field in structure */
H5UC_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 */
} H5B_t;
/* Callback info for loading a B-tree node into the cache */
typedef struct H5B_cache_ud_t {
H5F_t *f; /* File that B-tree node is within */
const struct H5B_class_t *type; /* Type of tree */
H5UC_t *rc_shared; /* Ref-counted shared info */
} H5B_cache_ud_t;
/*****************************/
/* Package Private Variables */
/*****************************/
/* 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__node_dest(H5B_t *bt);
/* For debugging */
H5_DLL herr_t H5B__verify_structure(H5F_t *f, haddr_t addr, const H5B_class_t *type, void *udata);
#endif /*H5Bpkg_H*/
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