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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* 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. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*-------------------------------------------------------------------------
*
* Created: H5Bprivate.h
* Jul 10 1997
* Robb Matzke <matzke@llnl.gov>
*
* Purpose: Private non-prototype header.
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
#ifndef _H5Bprivate_H
#define _H5Bprivate_H
#include "H5Bpublic.h" /*API prototypes */
/* Private headers needed by this file */
#include "H5private.h" /* Generic Functions */
#include "H5ACprivate.h" /* Metadata cache */
#include "H5Fprivate.h" /* File access */
#include "H5FLprivate.h" /* Free Lists */
#include "H5RCprivate.h" /* Reference counted object functions */
/**************************/
/* Library Private Macros */
/**************************/
/*
* Feature: Define this constant if you want to check B-tree consistency
* after each B-tree operation. Note that this slows down the
* library considerably! Debugging the B-tree depends on assert()
* being enabled.
*/
#ifdef NDEBUG
# undef H5B_DEBUG
#endif
#define H5B_MAGIC "TREE" /*tree node magic number */
#define H5B_SIZEOF_MAGIC 4 /*size of magic number */
/* Define return values from operator callback function for H5B_iterate */
/* (Actually, any postive value will cause the iterator to stop and pass back
* that positive value to the function that called the iterator)
*/
#define H5B_ITER_ERROR (-1)
#define H5B_ITER_CONT (0)
#define H5B_ITER_STOP (1)
/****************************/
/* Library Private Typedefs */
/****************************/
/* Define return values from B-tree insertion callbacks */
typedef enum H5B_ins_t {
H5B_INS_ERROR = -1, /*error return value */
H5B_INS_NOOP = 0, /*insert made no changes */
H5B_INS_LEFT = 1, /*insert new node to left of cur node */
H5B_INS_RIGHT = 2, /*insert new node to right of cur node */
H5B_INS_CHANGE = 3, /*change child address for cur node */
H5B_INS_FIRST = 4, /*insert first node in (sub)tree */
H5B_INS_REMOVE = 5 /*remove current node */
} H5B_ins_t;
/* Define the operator callback function pointer for H5B_iterate() */
typedef int (*H5B_operator_t)(H5F_t *f, hid_t dxpl_id, const void *_lt_key, haddr_t addr,
const void *_rt_key, void *_udata);
/* Typedef for B-tree in memory (defined in H5Bpkg.h) */
typedef struct H5B_t H5B_t;
/* Each B-tree has certain information that can be shared across all
* the instances of nodes in that B-tree.
*/
typedef struct H5B_shared_t {
const struct H5B_class_t *type; /* Type of tree */
unsigned two_k; /* 2*"K" value for tree's nodes */
size_t sizeof_rkey; /* Size of raw (disk) key */
size_t sizeof_rnode; /* Size of raw (disk) node */
size_t sizeof_keys; /* Size of native (memory) key node */
uint8_t *page; /* Disk page */
size_t *nkey; /* Offsets of each native key in native key buffer */
} H5B_shared_t;
/*
* Each class of object that can be pointed to by a B-link tree has a
* variable of this type that contains class variables and methods. Each
* tree has a K (1/2 rank) value on a per-file basis. The file_create_parms
* has an array of K values indexed by the `id' class field below. The
* array is initialized with the HDF5_BTREE_K_DEFAULT macro.
*/
typedef struct H5B_class_t {
H5B_subid_t id; /*id as found in file*/
size_t sizeof_nkey; /*size of native (memory) key*/
H5RC_t * (*get_shared)(const H5F_t*, const void*); /*shared info for node */
herr_t (*new_node)(H5F_t*, hid_t, H5B_ins_t, void*, void*, void*, haddr_t*);
int (*cmp2)(H5F_t*, hid_t, void*, void*, void*); /*compare 2 keys */
int (*cmp3)(H5F_t*, hid_t, void*, void*, void*); /*compare 3 keys */
herr_t (*found)(H5F_t*, hid_t, haddr_t, const void*, void*);
/* insert new data */
H5B_ins_t (*insert)(H5F_t*, hid_t, haddr_t, void*, hbool_t*, void*, void*,
void*, hbool_t*, haddr_t*);
/* min insert uses min leaf, not new(), similarily for max insert */
hbool_t follow_min;
hbool_t follow_max;
/* remove existing data */
H5B_ins_t (*remove)(H5F_t*, hid_t, haddr_t, void*, hbool_t*, void*, void*,
hbool_t*);
/* encode, decode, debug key values */
herr_t (*decode)(const H5F_t*, const struct H5B_t*, const uint8_t*, void*);
herr_t (*encode)(const H5F_t*, const struct H5B_t*, uint8_t*, void*);
herr_t (*debug_key)(FILE*, H5F_t*, hid_t, int, int, const void*, const void*);
} H5B_class_t;
/*****************************/
/* Library-private Variables */
/*****************************/
/* Declare a free list to manage the H5B_shared_t struct */
H5FL_EXTERN(H5B_shared_t);
/***************************************/
/* Library-private Function Prototypes */
/***************************************/
H5_DLL size_t H5B_nodesize(const H5F_t *f, const H5B_shared_t *shared,
size_t *total_nkey_size);
H5_DLL herr_t H5B_create (H5F_t *f, hid_t dxpl_id, const H5B_class_t *type, void *udata,
haddr_t *addr_p/*out*/);
H5_DLL herr_t H5B_find (H5F_t *f, hid_t dxpl_id, const H5B_class_t *type, haddr_t addr,
void *udata);
H5_DLL herr_t H5B_insert (H5F_t *f, hid_t dxpl_id, const H5B_class_t *type, haddr_t addr,
void *udata);
H5_DLL herr_t H5B_iterate (H5F_t *f, hid_t dxpl_id, const H5B_class_t *type, H5B_operator_t
op, haddr_t addr, void *udata);
H5_DLL herr_t H5B_remove(H5F_t *f, hid_t dxpl_id, const H5B_class_t *type, haddr_t addr,
void *udata);
H5_DLL herr_t H5B_delete(H5F_t *f, hid_t dxpl_id, const H5B_class_t *type, haddr_t addr,
void *udata);
H5_DLL herr_t H5B_debug (H5F_t *f, hid_t dxpl_id, haddr_t addr, FILE * stream,
int indent, int fwidth, const H5B_class_t *type,
void *udata);
#endif
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