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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. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*-------------------------------------------------------------------------
*
* Created: H5Opublic.h
* Aug 5 1997
* Robb Matzke <matzke@llnl.gov>
*
* Purpose: Public declarations for the H5O (object header)
* package.
*
*-------------------------------------------------------------------------
*/
#ifndef _H5Opublic_H
#define _H5Opublic_H
/* Public headers needed by this file */
#include "H5public.h" /* Generic Functions */
#include "H5Ipublic.h" /* IDs */
#include "H5Lpublic.h" /* Links */
/*****************/
/* Public Macros */
/*****************/
/* Flags for object copy (H5Ocopy) */
#define H5O_COPY_SHALLOW_HIERARCHY_FLAG (0x0001u) /* Copy only immediate members */
#define H5O_COPY_EXPAND_SOFT_LINK_FLAG (0x0002u) /* Expand soft links into new objects */
#define H5O_COPY_EXPAND_EXT_LINK_FLAG (0x0004u) /* Expand external links into new objects */
#define H5O_COPY_EXPAND_REFERENCE_FLAG (0x0008u) /* Copy objects that are pointed by references */
#define H5O_COPY_WITHOUT_ATTR_FLAG (0x0010u) /* Copy object without copying attributes */
#define H5O_COPY_PRESERVE_NULL_FLAG (0x0020u) /* Copy NULL messages (empty space) */
#define H5O_COPY_ALL (0x003Fu) /* All object copying flags (for internal checking) */
/* Flags for shared message indexes.
* Pass these flags in using the mesg_type_flags parameter in
* H5P_set_shared_mesg_index.
* (Developers: These flags correspond to object header message type_ids,
* but we need to assign each kind of message to a different bit so that
* one index can hold multiple types.)
*/
#define H5O_MESG_NONE_FLAG 0x0000 /* No shared messages */
#define H5O_MESG_SDSPACE_FLAG 0x0001 /* Simple Dataspace Message. */
#define H5O_MESG_DTYPE_FLAG 0x0002 /* Datatype Message. */
#define H5O_MESG_FILL_FLAG 0x0004 /* Fill Value Message. */
#define H5O_MESG_PLINE_FLAG 0x0008 /* Filter pipeline message. */
#define H5O_MESG_ATTR_FLAG 0x0010 /* Attribute Message. */
#define H5O_MESG_ALL_FLAG (H5O_MESG_SDSPACE_FLAG | H5O_MESG_DTYPE_FLAG | H5O_MESG_FILL_FLAG | H5O_MESG_PLINE_FLAG | H5O_MESG_ATTR_FLAG)
/*******************/
/* Public Typedefs */
/*******************/
/* A struct that's part of the H5G_stat_t routine (deprecated) */
typedef struct H5O_stat_t {
hsize_t size; /* Total size of object header in file */
hsize_t free; /* Free space within object header */
unsigned nmesgs; /* Number of object header messages */
unsigned nchunks; /* Number of object header chunks */
} H5O_stat_t;
/* Types of objects in file */
typedef enum H5O_type_t {
H5O_TYPE_UNKNOWN = -1, /* Unknown object type */
H5O_TYPE_GROUP, /* Object is a group */
H5O_TYPE_DATASET, /* Object is a dataset */
H5O_TYPE_NAMED_DATATYPE /* Object is a named data type */
} H5O_type_t;
/* Information struct for object (for H5Oget_info/H5Oget_info_by_idx) */
typedef struct H5O_info_t {
unsigned long fileno; /* File number that object is located in */
haddr_t addr; /* Object address in file */
H5O_type_t type; /* Basic object type (group, dataset, etc.) */
unsigned rc; /* Reference count of object */
time_t mtime; /* Modification time */
struct {
unsigned version; /* Version number of header format in file */
unsigned nmesgs; /* Number of object header messages */
unsigned nchunks; /* Number of object header chunks */
hsize_t hdr_size; /* Total size of object header in file */
hsize_t meta_space; /* Space within header for object header metadata information */
hsize_t mesg_space; /* Space within header for actual message information */
hsize_t free_space; /* Free space within object header */
uint64_t msg_present; /* Flags to indicate presence of message type in header */
uint64_t msg_shared; /* Flags to indicate message type is shared in header */
} hdr;
hsize_t extra; /* Size of additional metadata for an object */
/* (B-tree & heap for groups, B-tree for chunked dataset, etc.) */
} H5O_info_t;
/********************/
/* Public Variables */
/********************/
#ifdef __cplusplus
extern "C" {
#endif
/*********************/
/* Public Prototypes */
/*********************/
H5_DLL hid_t H5Oopen(hid_t loc_id, const char *name, hid_t lapl_id);
H5_DLL hid_t H5Oopen_by_addr(hid_t loc_id, haddr_t addr);
H5_DLL hid_t H5Oopen_by_idx(hid_t loc_id, const char *group_name,
H5L_index_t idx_type, H5_iter_order_t order, hsize_t n, hid_t lapl_id);
H5_DLL herr_t H5Oget_info(hid_t loc_id, const char *name, H5O_info_t *oinfo,
hid_t lapl_id);
H5_DLL herr_t H5Oincr_refcount(hid_t object_id);
H5_DLL herr_t H5Odecr_refcount(hid_t object_id);
H5_DLL herr_t H5Ocopy(hid_t src_loc_id, const char *src_name, hid_t dst_loc_id,
const char *dst_name, hid_t ocpypl_id, hid_t lcpl_id);
H5_DLL herr_t H5Oclose(hid_t object_id);
#ifdef __cplusplus
}
#endif
#endif /* _H5Opublic_H */
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