/*------------------------------------------------------------------------- * Copyright (C) 1997 National Center for Supercomputing Applications. * All rights reserved. * *------------------------------------------------------------------------- * * Created: H5Gprivate.h * Jul 11 1997 * Robb Matzke * * Purpose: Private stuff for the H5G package (symbol tables). * * Modifications: * *------------------------------------------------------------------------- */ #ifndef _H5Gprivate_H #define _H5Gprivate_H #include /* Private headers needed by this file */ #include #include #include #define H5G_NODE_MAGIC "SNOD" /*symbol table node magic number */ #define H5G_NODE_SIZEOF_MAGIC 4 /*sizeof symbol node magic number */ #define H5G_NODE_VERS 1 /*symbol table node version number */ #define H5G_SIZE_HINT 1024 /*default root dir size hint */ #define H5G_NODE_K(F) ((F)->file_create_parms.sym_leaf_k) #define H5G_NODE_SIZEOF_HDR(F) (H5G_NODE_SIZEOF_MAGIC + 4) #define H5G_SIZEOF_ENTRY(F) \ (H5F_SIZEOF_OFFSET(F) + /*offset of name into heap */ \ H5F_SIZEOF_OFFSET(F) + /*address of object header */ \ 4 + /*entry type */ \ 24) /*scratch pad space */ /* * Various types of object header information can be cached in a symbol * table entry (it's normal home is the object header to which the entry * points). This datatype determines what (if anything) is cached in the * symbol table entry. */ typedef enum H5G_type_t { H5G_NOTHING_CACHED =0, /*nothing is cached */ H5G_CACHED_SDATA =1, /*simple dataset, `sdata' */ H5G_CACHED_STAB =2 /*symbol table, `stab' */ } H5G_type_t; /* * A symbol table entry. The two important fields are `name_off' and * `header'. The remaining fields are used for caching information that * also appears in the object header to which this symbol table entry * points. */ typedef struct H5G_entry_t { off_t name_off; /*offset of name within name heap */ haddr_t header; /*file address of object header */ H5G_type_t type; /*type of information cached */ union { struct { uint32 nt; /*number type */ uint32 ndim; /*number of dimensions */ uint32 dim[4]; /*dimension sizes */ } sdata; struct { haddr_t btree; /*file address of symbol table B-tree */ haddr_t heap; /*file address of stab name heap */ } stab; } cache; /*cached data from object header */ } H5G_entry_t; /* * 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 directory. */ typedef struct H5G_node_t { int dirty; /*has cache been modified? */ int nsyms; /*number of symbols */ H5G_entry_t *entry; /*symbol table entries */ } H5G_node_t; /* * Each key field of the B-link tree that points to symbol table * nodes consists of this structure... */ typedef struct H5G_node_key_t { off_t offset; /*offset into heap for name */ } H5G_node_key_t; typedef enum H5G_oper_t { H5G_OPER_FIND =0, /*find a symbol */ H5G_OPER_MODIFY =1 /*modify a 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_node_ud1_t { /* downward */ H5G_oper_t operation; /*what operation to perform */ const char *name; /*points to temporary memory */ haddr_t heap; /*symbol table heap address */ /* upward for H5G_OPER_FIND, downward for H5G_OPER_MODIFY */ H5G_entry_t entry; /*symbol table entry */ } H5G_node_ud1_t; typedef struct H5G_node_list_t { /* downward */ H5G_entry_t *entry; /*array of entries, alloc'd by caller */ char **name; /*array of string ptrs, allocd by caller*/ intn maxentries; /*size of the ADDR and NAME arrays */ haddr_t heap; /*heap address */ /* upward */ intn nsyms; /*num. symbols processed */ } H5G_node_list_t; extern const H5B_class_t H5B_SNODE[1]; /* * Library prototypes... */ /* functions that understand directories */ herr_t H5G_new (hdf5_file_t *f, H5G_entry_t *cwd, H5G_entry_t *dir_ent, const char *name, size_t size_hint, H5G_entry_t *ent); herr_t H5G_find (hdf5_file_t *f, H5G_entry_t *cwd, H5G_entry_t *dir_ent, const char *name, H5G_entry_t *ent); herr_t H5G_insert (hdf5_file_t *f, H5G_entry_t *cwd, H5G_entry_t *dir_ent, const char *name, H5G_entry_t *ent); herr_t H5G_modify (hdf5_file_t *f, H5G_entry_t *cwd, H5G_entry_t *dir_ent, const char *name, H5G_entry_t *ent); /* functions that understand symbol tables */ haddr_t H5G_stab_new (hdf5_file_t *f, H5G_entry_t *self, size_t init); haddr_t H5G_stab_find (hdf5_file_t *f, H5G_entry_t *self, const char *name, H5G_entry_t *ent); herr_t H5G_stab_modify (hdf5_file_t *f, H5G_entry_t *self, const char *name, H5G_entry_t *ent); herr_t H5G_stab_insert (hdf5_file_t *f, H5G_entry_t *self, const char *name, H5G_entry_t *ent); intn H5G_stab_list (hdf5_file_t *f, H5G_entry_t *self, intn maxentries, char *names[], H5G_entry_t entries[]); /* functions that understand symbol table nodes */ herr_t H5G_node_debug (hdf5_file_t *f, haddr_t addr, FILE *stream, intn indent, intn fwidth, haddr_t heap); /* functions that understand symbol table entries */ herr_t H5G_decode (hdf5_file_t *f, uint8 **pp, H5G_entry_t *ent); herr_t H5G_decode_vec (hdf5_file_t *f, uint8 **pp, H5G_entry_t *ent, intn n); herr_t H5G_encode (hdf5_file_t *f, uint8 **pp, H5G_entry_t *ent); herr_t H5G_encode_vec (hdf5_file_t *f, uint8 **pp, H5G_entry_t *ent, intn n); #endif