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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: Robb Matzke <matzke@llnl.gov>
* Thursday, September 18, 1997
*
* Purpose: This file contains declarations which are visible
* only within the H5G package. Source files outside the
* H5G package should include H5Gprivate.h instead.
*/
#ifndef H5G_PACKAGE
#error "Do not include this file outside the H5G package!"
#endif
#ifndef _H5Gpkg_H
#define _H5Gpkg_H
/* Get package's private header */
#include "H5Gprivate.h"
/* Other private headers needed by this file */
#include "H5ACprivate.h" /* Metadata cache */
/*
* A symbol table node is a collection of symbol table entries. It can
* be thought of as the lowest level of the B-link tree that points to
* a collection of symbol table entries that belong to a specific symbol
* table or group.
*/
typedef struct H5G_node_t {
H5AC_info_t cache_info; /* Information for H5AC cache functions, _must_ be */
/* first field in structure */
int nsyms; /*number of symbols */
H5G_entry_t *entry; /*array of symbol table entries */
} H5G_node_t;
/*
* Reference count shared between all instances of an open group
*/
struct H5G_shared_t {
int fo_count; /* open file object count */
};
/*
* A group handle passed around through layers of the library within and
* above the H5G layer.
*/
struct H5G_t {
H5G_shared_t* shared; /*shared file object data */
H5G_entry_t ent; /*info about the group */
};
/*
* These operations can be passed down from the H5G_stab layer to the
* H5G_node layer through the B-tree layer.
*/
typedef enum H5G_oper_t {
H5G_OPER_FIND = 0, /*find a symbol */
H5G_OPER_INSERT = 1, /*insert a new symbol */
H5G_OPER_REMOVE = 2 /*remove existing symbol */
} H5G_oper_t;
/*
* Data exchange structure for symbol table nodes. This structure is
* passed through the B-link tree layer to the methods for the objects
* to which the B-link tree points.
*/
typedef struct H5G_bt_ud1_t {
/* downward */
H5G_oper_t operation; /*what operation to perform */
const char *name; /*points to temporary memory */
haddr_t heap_addr; /*symbol table heap address */
/* downward for INSERT, upward for FIND */
H5G_entry_t ent; /*entry to insert into table */
} H5G_bt_ud1_t;
/*
* Data exchange structure to pass through the B-tree layer for the
* H5B_iterate function.
*/
typedef struct H5G_bt_ud2_t {
/* downward */
hid_t group_id; /*group id to pass to iteration operator */
H5G_entry_t *ent; /*the entry to which group_id points */
int skip; /*initial entries to skip */
H5G_iterate_t op; /*iteration operator */
void *op_data; /*user-defined operator data */
/* upward */
int final_ent; /*final entry looked at */
} H5G_bt_ud2_t;
/*
* Data exchange structure to pass through the B-tree layer for the
* H5B_iterate function.
*/
typedef struct H5G_bt_ud3_t {
/* downward */
H5G_entry_t *ent; /*the entry of group being queried */
hsize_t idx; /*index of group member to be queried */
hsize_t num_objs; /*the number of objects having been traversed*/
/* upward */
char *name; /*member name to be returned */
H5G_obj_t type; /*member type to be returned */
} H5G_bt_ud3_t;
/*
* This is the class identifier to give to the B-tree functions.
*/
H5_DLLVAR H5B_class_t H5B_SNODE[1];
/* The cache subclass */
H5_DLLVAR const H5AC_class_t H5AC_SNODE[1];
/*
* Functions that understand symbol tables but not names. The
* functions that understand names are exported to the rest of
* the library and appear in H5Gprivate.h.
*/
H5_DLL herr_t H5G_stab_create(H5F_t *f, hid_t dxpl_id, size_t size_hint,
H5G_entry_t *ent/*out*/);
H5_DLL herr_t H5G_stab_find(H5G_entry_t *grp_ent, const char *name,
H5G_entry_t *obj_ent/*out*/, hid_t dxpl_id);
H5_DLL herr_t H5G_stab_insert(H5G_entry_t *grp_ent, const char *name,
H5G_entry_t *obj_ent, hid_t dxpl_id);
H5_DLL herr_t H5G_stab_delete(H5F_t *f, hid_t dxpl_id, haddr_t btree_addr, haddr_t heap_addr);
H5_DLL herr_t H5G_stab_remove(H5G_entry_t *grp_ent, const char *name, hid_t dxpl_id);
/*
* Functions that understand symbol table entries.
*/
H5_DLL herr_t H5G_ent_decode_vec(H5F_t *f, const uint8_t **pp,
H5G_entry_t *ent, int n);
H5_DLL herr_t H5G_ent_encode_vec(H5F_t *f, uint8_t **pp,
const H5G_entry_t *ent, int n);
/* Functions that understand symbol table nodes */
H5_DLL int H5G_node_iterate (H5F_t *f, hid_t dxpl_id, void *_lt_key, haddr_t addr,
void *_rt_key, void *_udata);
H5_DLL int H5G_node_sumup(H5F_t *f, hid_t dxpl_id, void *_lt_key, haddr_t addr,
void *_rt_key, void *_udata);
H5_DLL int H5G_node_name(H5F_t *f, hid_t dxpl_id, void *_lt_key, haddr_t addr,
void *_rt_key, void *_udata);
H5_DLL int H5G_node_type(H5F_t *f, hid_t dxpl_id, void *_lt_key, haddr_t addr,
void *_rt_key, void *_udata);
#endif
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