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-rw-r--r--src/H5Gprivate.h150
1 files changed, 44 insertions, 106 deletions
diff --git a/src/H5Gprivate.h b/src/H5Gprivate.h
index e6f5df4..dd26902 100644
--- a/src/H5Gprivate.h
+++ b/src/H5Gprivate.h
@@ -8,7 +8,7 @@
* Jul 11 1997
* Robb Matzke <matzke@llnl.gov>
*
- * Purpose: Private stuff for the H5G package (symbol tables).
+ * Purpose: Library-visible declarations.
*
* Modifications:
*
@@ -25,18 +25,17 @@
#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_new_entry() H5MM_xcalloc (1, sizeof(H5G_entry_t))
+
+/*
+ * The disk size for a symbol table entry...
+ */
#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 */
-#define H5G_DEFAULT_ROOT_SIZE 32
-
/*
* 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
@@ -44,134 +43,73 @@
* symbol table entry.
*/
typedef enum H5G_type_t {
- H5G_NOTHING_CACHED =0, /*nothing is cached */
+ H5G_NOTHING_CACHED =0, /*nothing is cached, must be 0 */
H5G_CACHED_SDATA =1, /*simple dataset, `sdata' */
H5G_CACHED_STAB =2 /*symbol table, `stab' */
} H5G_type_t;
/*
+ * A symbol table entry caches these parameters from object header
+ * messages...
+ */
+typedef union H5G_cache_t {
+ struct {
+ struct {
+ uint8 length;
+ uint8 arch;
+ uint16 type;
+ } nt ; /*number type */
+ uint32 ndim; /*number of dimensions */
+ uint32 dim[4]; /*dimension sizes */
+ } sdata;
+
+ struct {
+ haddr_t btree_addr; /*file address of symbol table B-tree */
+ haddr_t heap_addr; /*file address of stab name heap */
+ } stab;
+} H5G_cache_t;
+
+/*
+ * An H5G_shadow_t is the struct used to describe object headers that
+ * are currently open for modification. It's contents is not
+ * important outside H5G.
+ */
+typedef struct H5G_shadow_t H5G_shadow_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 {
+ hbool_t dirty; /*entry out-of-date? */
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 {
- struct {
- uint8 length;
- uint8 arch;
- uint16 type;
- } nt ; /*number type */
- uint32 ndim; /*number of dimensions */
- uint32 dim[4]; /*dimension sizes */
- } sdata;
-
- struct {
- haddr_t btree_addr; /*file address of symbol table B-tree */
- haddr_t heap_addr; /*file address of stab name heap */
- } stab;
- } cache; /*cached data from object header */
+ H5G_cache_t cache; /*cached data from object header */
+ H5G_shadow_t *shadow; /*optional ptr to the shadow */
} 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_addr; /*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_addr; /*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);
+H5G_entry_t *H5G_open (hdf5_file_t *f, H5G_entry_t *cwd, const char *name);
+herr_t H5G_close (hdf5_file_t *f, 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);
herr_t H5G_set_root (hdf5_file_t *f, 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);
+herr_t H5G_decode (hdf5_file_t *f, uint8 **pp, H5G_entry_t *ent);
herr_t H5G_debug (hdf5_file_t *f, H5G_entry_t *ent, FILE *stream, intn indent,
intn fwidth);
+herr_t H5G_node_debug (hdf5_file_t *f, haddr_t addr, FILE *stream, intn indent,
+ intn fwidth, haddr_t heap);
+
#endif
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