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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* 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://hdf.ncsa.uiuc.edu/HDF5/doc/Copyright.html. If you do not have *
* access to either file, you may request a copy from hdfhelp@ncsa.uiuc.edu. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*
* Programmer: Quincey Koziol <koziol@ncsa.uiuc.edu>
* Monday, January 31, 2005
*
* Purpose: This file contains declarations which are visible only within
* the H5B2 package. Source files outside the H5B2 package should
* include H5B2private.h instead.
*/
#ifndef H5B2_PACKAGE
#error "Do not include this file outside the H5B2 package!"
#endif
#ifndef _H5B2pkg_H
#define _H5B2pkg_H
/* Get package's private header */
#include "H5B2private.h"
/* Other private headers needed by this file */
#include "H5ACprivate.h" /* Metadata cache */
#include "H5FLprivate.h" /* Free Lists */
#include "H5RCprivate.h" /* Reference counted object functions */
/**************************/
/* Package Private Macros */
/**************************/
/* Size of signature information (on disk) */
#define H5B2_SIZEOF_MAGIC 4
/* B-tree signatures */
#define H5B2_HDR_MAGIC "BTHD" /* Header */
#define H5B2_INT_MAGIC "BTND" /* Internal node */
#define H5B2_LEAF_MAGIC "BTLF" /* Leaf node */
/* Size of storage for number of records per node (on disk) */
#define H5B2_SIZEOF_RECORDS_PER_NODE 2
/* Size of a "node pointer" (on disk) */
#define H5B2_NODE_POINTER_SIZE(f) (H5F_SIZEOF_ADDR(f)+H5B2_SIZEOF_RECORDS_PER_NODE+H5F_SIZEOF_SIZE(f))
/* Size of the B-tree header on disk */
#define H5B2_HEADER_SIZE(f) ( \
4 + /* Signature */ \
1 + /* Version */ \
1 + /* Tree type */ \
4 + /* Node size, in bytes */ \
2 + /* Key size, in bytes */ \
2 + /* Depth of tree */ \
2 + /* Split % of full (as integer, ie. "98" means 98%) */ \
2 + /* Merge % of full (as integer, ie. "98" means 98%) */ \
H5B2_NODE_POINTER_SIZE(f)) /* Node pointer to root node in tree */
/* Macro to retrieve pointer to i'th native record for native record buffer */
#define H5B2_NAT_NREC(b,shared,idx) (b+(shared)->nat_off[(idx)])
/* Macro to retrieve pointer to i'th native record for internal node */
#define H5B2_INT_NREC(i,shared,idx) ((i)->int_native+(shared)->nat_off[(idx)])
/* Macro to retrieve pointer to i'th native record for leaf node */
#define H5B2_LEAF_NREC(l,shared,idx) ((l)->leaf_native+(shared)->nat_off[(idx)])
/****************************/
/* Package Private Typedefs */
/****************************/
/* A "node pointer" to another B-tree node */
typedef struct {
haddr_t addr; /* Address of other node */
unsigned node_nrec; /* Number of records used in node pointed to */
hsize_t all_nrec; /* Number of records in node pointed to and all it's children */
} H5B2_node_ptr_t;
/* Each B-tree has certain information that can be shared across all
* the instances of nodes in that B-tree.
*/
typedef struct H5B2_shared_t {
/* Shared internal data structures */
const H5B2_class_t *type; /* Type of tree */
uint8_t *page; /* Disk page */
H5FL_fac_head_t *int_fac; /* Factory for internal node native record blocks */
H5FL_fac_head_t *leaf_fac; /* Factory for leaf node native record blocks */
H5FL_fac_head_t *node_ptr_fac; /* Factory for internal node node pointer blocks */
size_t *nat_off; /* Array of offsets of native records */
/* Information set by user */
unsigned split_percent; /* Percent full at which to split the node, when inserting */
unsigned merge_percent; /* Percent full at which to merge the node, when deleting */
size_t node_size; /* Size of all nodes, in bytes */
size_t rrec_size; /* Size of "raw" (on disk) record, in bytes */
/* Derived information from user's information */
size_t internal_nrec; /* Number of records which fit into an internal node */
size_t split_int_nrec; /* Number of records to split an internal node at */
size_t merge_int_nrec; /* Number of records to merge an internal node at */
size_t leaf_nrec; /* Number of records which fit into a leaf node */
size_t split_leaf_nrec; /* Number of records to split a leaf node at */
size_t merge_leaf_nrec; /* Number of records to merge a leaf node at */
} H5B2_shared_t;
/* The B-tree information */
typedef struct H5B2_t {
/* Information for H5AC cache functions, _must_ be first field in structure */
H5AC_info_t cache_info;
/* Internal B-tree information */
unsigned depth; /* B-tree's overall depth */
H5B2_node_ptr_t root; /* Node pointer to root node in B-tree */
H5RC_t *shared; /* Ref-counted shared info */
} H5B2_t;
/* B-tree leaf node information */
typedef struct H5B2_leaf_t {
/* Information for H5AC cache functions, _must_ be first field in structure */
H5AC_info_t cache_info;
/* Internal B-tree information */
H5RC_t *shared; /* Ref-counted shared info */
uint8_t *leaf_native; /* Pointer to native records */
unsigned nrec; /* Number of records in node */
} H5B2_leaf_t;
/* B-tree internal node information */
typedef struct H5B2_internal_t {
/* Information for H5AC cache functions, _must_ be first field in structure */
H5AC_info_t cache_info;
/* Internal B-tree information */
H5RC_t *shared; /* Ref-counted shared info */
uint8_t *int_native; /* Pointer to native records */
H5B2_node_ptr_t *node_ptrs; /* Pointer to node pointers */
unsigned nrec; /* Number of records in node */
} H5B2_internal_t;
/*****************************/
/* Package Private Variables */
/*****************************/
/* H5B2 header inherits cache-like properties from H5AC */
H5_DLLVAR const H5AC_class_t H5AC_BT2_HDR[1];
/* H5B2 internal node inherits cache-like properties from H5AC */
H5_DLLVAR const H5AC_class_t H5AC_BT2_INT[1];
/* H5B2 leaf node inherits cache-like properties from H5AC */
H5_DLLVAR const H5AC_class_t H5AC_BT2_LEAF[1];
/* Declare a free list to manage the H5B2_t struct */
H5FL_EXTERN(H5B2_t);
/* Declare a free list to manage the H5B2_internal_t struct */
H5FL_EXTERN(H5B2_internal_t);
/* Declare a free list to manage the H5B2_leaf_t struct */
H5FL_EXTERN(H5B2_leaf_t);
/* Internal v2 B-tree testing class */
#ifdef H5B2_TESTING
H5_DLLVAR const H5B2_class_t H5B2_TEST[1];
#endif /* H5B2_TESTING */
/******************************/
/* Package Private Prototypes */
/******************************/
H5_DLL herr_t H5B2_shared_free (void *_shared);
H5_DLL herr_t H5B2_shared_init (H5F_t *f, H5B2_t *bt2, const H5B2_class_t *type,
size_t node_size, size_t rrec_size, unsigned split_percent, unsigned merge_percent);
H5_DLL herr_t H5B2_cache_hdr_dest(H5F_t *f, H5B2_t *b);
H5_DLL herr_t H5B2_cache_leaf_dest(H5F_t *f, H5B2_leaf_t *l);
H5_DLL herr_t H5B2_cache_internal_dest(H5F_t *f, H5B2_internal_t *i);
H5_DLL herr_t H5B2_hdr_debug(H5F_t *f, hid_t dxpl_id, haddr_t addr,
FILE *stream, int indent, int fwidth, const H5B2_class_t *type);
H5_DLL herr_t H5B2_int_debug(H5F_t *f, hid_t dxpl_id, haddr_t addr,
FILE *stream, int indent, int fwidth, const H5B2_class_t *type,
haddr_t hdr_addr, unsigned nrec);
H5_DLL herr_t H5B2_leaf_debug(H5F_t *f, hid_t dxpl_id, haddr_t addr,
FILE *stream, int indent, int fwidth, const H5B2_class_t *type,
haddr_t hdr_addr, unsigned nrec);
#endif /* _H5B2pkg_H */
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