tk.git - Tk is a free and open-source, cross-platform widget toolkit that provides a library of basic elements of GUI widgets for building a graphical user interface (GUI) in many programming languages.

Tk is a free and open-source, cross-platform widget toolkit that provides a library of basic elements of GUI widgets for building a graphical user interface (GUI) in many programming languages.

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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Copyright by The HDF Group.                                               *
 * 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 COPYING file, which can be found at the root of the source code       *
 * distribution tree, or in https://www.hdfgroup.org/licenses.               *
 * If you do not have access to either file, you may request a copy from     *
 * help@hdfgroup.org.                                                        *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/*-------------------------------------------------------------------------
 *
 * Created:             H5Opublic.h
 *                      Aug  5 1997
 *                      Robb Matzke
 *
 * 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_MERGE_COMMITTED_DTYPE_FLAG (0x0040u) /**< Merge committed datatypes in dest file */
#define H5O_COPY_ALL                        (0x007Fu) /**< 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_SHMESG_NONE_FLAG    0x0000                  /**< No shared messages */
#define H5O_SHMESG_SDSPACE_FLAG ((unsigned)1 << 0x0001) /**< Simple Dataspace Message.  */
#define H5O_SHMESG_DTYPE_FLAG   ((unsigned)1 << 0x0003) /**< Datatype Message.  */
#define H5O_SHMESG_FILL_FLAG    ((unsigned)1 << 0x0005) /**< Fill Value Message. */
#define H5O_SHMESG_PLINE_FLAG   ((unsigned)1 << 0x000b) /**< Filter pipeline message.  */
#define H5O_SHMESG_ATTR_FLAG    ((unsigned)1 << 0x000c) /**< Attribute Message.  */
#define H5O_SHMESG_ALL_FLAG                                                                                  \
    (H5O_SHMESG_SDSPACE_FLAG | H5O_SHMESG_DTYPE_FLAG | H5O_SHMESG_FILL_FLAG | H5O_SHMESG_PLINE_FLAG |        \
     H5O_SHMESG_ATTR_FLAG)

/* clang-format off */
/* Object header status flag definitions */
#define H5O_HDR_CHUNK0_SIZE             0x03 /**< 2-bit field indicating # of bytes to store the size of chunk 0's data */
#define H5O_HDR_ATTR_CRT_ORDER_TRACKED  0x04 /**< Attribute creation order is tracked */
#define H5O_HDR_ATTR_CRT_ORDER_INDEXED  0x08 /**< Attribute creation order has index */
#define H5O_HDR_ATTR_STORE_PHASE_CHANGE 0x10 /**< Non-default attribute storage phase change values stored */
#define H5O_HDR_STORE_TIMES             0x20 /**< Store access, modification, change & birth times for object */
#define H5O_HDR_ALL_FLAGS                                                                                    \
    (H5O_HDR_CHUNK0_SIZE | H5O_HDR_ATTR_CRT_ORDER_TRACKED | H5O_HDR_ATTR_CRT_ORDER_INDEXED |                 \
     H5O_HDR_ATTR_STORE_PHASE_CHANGE | H5O_HDR_STORE_TIMES)
/* clang-format on */

/* Maximum shared message values.  Number of indexes is 8 to allow room to add
 * new types of messages.
 */
#define H5O_SHMESG_MAX_NINDEXES  8
#define H5O_SHMESG_MAX_LIST_SIZE 5000

/* Flags for H5Oget_info.
 * These flags determine which fields will be filled in the H5O_info_t
 * struct.
 */
#define H5O_INFO_BASIC     0x0001u /**< Fill in the fileno, addr, type, and rc fields */
#define H5O_INFO_TIME      0x0002u /**< Fill in the atime, mtime, ctime, and btime fields */
#define H5O_INFO_NUM_ATTRS 0x0004u /**< Fill in the num_attrs field */
#define H5O_INFO_ALL       (H5O_INFO_BASIC | H5O_INFO_TIME | H5O_INFO_NUM_ATTRS)

//! <!-- [H5O_native_info_fields_snip] -->
/**
 * Flags for H5Oget_native_info().  These flags determine which fields will be
 * filled in the \ref H5O_native_info_t struct.
 */
#define H5O_NATIVE_INFO_HDR       0x0008u /**< Fill in the hdr field */
#define H5O_NATIVE_INFO_META_SIZE 0x0010u /**< Fill in the meta_size field */
#define H5O_NATIVE_INFO_ALL       (H5O_NATIVE_INFO_HDR | H5O_NATIVE_INFO_META_SIZE)
//! <!-- [H5O_native_info_fields_snip] -->

/* Convenience macro to check if the token is the 'undefined' token value */
#define H5O_IS_TOKEN_UNDEF(token) (!HDmemcmp(&(token), &(H5O_TOKEN_UNDEF), sizeof(H5O_token_t)))

/*******************/
/* Public Typedefs */
/*******************/

//! <!-- [H5O_type_t_snip] -->
/**
 * 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_MAP,            /**< Object is a map */
    H5O_TYPE_NTYPES          /**< Number of different object types (must be last!) */
} H5O_type_t;
//! <!-- [H5O_type_t_snip] -->

//! <!-- [H5O_hdr_info_t_snip] -->
/**
 * Information struct for object header metadata (for
 * H5Oget_info(), H5Oget_info_by_name(), H5Oget_info_by_idx())
 */
typedef struct H5O_hdr_info_t {
    unsigned version; /**< Version number of header format in file */
    unsigned nmesgs;  /**< Number of object header messages */
    unsigned nchunks; /**< Number of object header chunks */
    unsigned flags;   /**< Object header status flags */
    struct {
        hsize_t total; /**< Total space for storing object header in file */
        hsize_t meta;  /**< Space within header for object header metadata information */
        hsize_t mesg;  /**< Space within header for actual message information */
        hsize_t free;  /**< Free space within object header */
    } space;
    struct {
        uint64_t present; /**< Flags to indicate presence of message type in header */
        uint64_t shared;  /**< Flags to indicate message type is shared in header */
    } mesg;
} H5O_hdr_info_t;
//! <!-- [H5O_hdr_info_t_snip] -->

//! <!-- [H5O_info2_t_snip] -->
/**
 * Data model information struct for objects
 * (For H5Oget_info(), H5Oget_info_by_name(), H5Oget_info_by_idx() version 3)
 */
typedef struct H5O_info2_t {
    unsigned long fileno;    /**< File number that object is located in */
    H5O_token_t   token;     /**< Token representing the object        */
    H5O_type_t    type;      /**< Basic object type (group, dataset, etc.) */
    unsigned      rc;        /**< Reference count of object            */
    time_t        atime;     /**< Access time                          */
    time_t        mtime;     /**< Modification time                    */
    time_t        ctime;     /**< Change time                          */
    time_t        btime;     /**< Birth time                           */
    hsize_t       num_attrs; /**< Number of attributes attached to object   */
} H5O_info2_t;
//! <!-- [H5O_info2_t_snip] -->

//! <!-- [H5O_native_info_t_snip] -->
/**
 * Native file format information struct for objects.
 * (For H5Oget_native_info(), H5Oget_native_info_by_name(), H5Oget_native_info_by_idx())
 */
typedef struct H5O_native_info_t {
    H5O_hdr_info_t hdr; /**< Object header information */
    struct {
        H5_ih_info_t obj;  /**< v1/v2 B-tree & local/fractal heap for groups, B-tree for chunked datasets */
        H5_ih_info_t attr; /**< v2 B-tree & heap for attributes */
    } meta_size;           /**< Extra metadata storage for obj & attributes */
} H5O_native_info_t;
//! <!-- [H5O_native_info_t_snip] -->

/**
 * Typedef for message creation indexes
 */
typedef uint32_t H5O_msg_crt_idx_t;

//! <!-- [H5O_iterate2_t_snip] -->
/**
 * Prototype for H5Ovisit(), H5Ovisit_by_name() operator (version 3)
 *
 * \param[in] obj Object that serves as the root of the iteration;
 *                the same value as the H5Ovisit3() \c obj_id parameter
 * \param[in] name Name of object, relative to \p obj, being examined at current
 *                 step of the iteration
 * \param[out] info Information about that object
 * \param[in,out] op_data User-defined pointer to data required by the application
 *                        in processing the object; a pass-through of the \c op_data
 *                        pointer provided with the H5Ovisit3() function call
 * \return \herr_t_iter
 *
 */
typedef herr_t (*H5O_iterate2_t)(hid_t obj, const char *name, const H5O_info2_t *info, void *op_data);
//! <!-- [H5O_iterate2_t_snip] -->

//! <!-- [H5O_mcdt_search_ret_t_snip] -->
typedef enum H5O_mcdt_search_ret_t {
    H5O_MCDT_SEARCH_ERROR = -1, /**< Abort H5Ocopy */
    H5O_MCDT_SEARCH_CONT, /**< Continue the global search of all committed datatypes in the destination file
                           */
    H5O_MCDT_SEARCH_STOP  /**< Stop the search, but continue copying.  The committed datatype will be copied
                             but not merged. */
} H5O_mcdt_search_ret_t;
//! <!-- [H5O_mcdt_search_ret_t_snip] -->

//! <!-- [H5O_mcdt_search_cb_t_snip] -->
/**
 * Callback to invoke when completing the search for a matching committed
 * datatype from the committed dtype list
 */
typedef H5O_mcdt_search_ret_t (*H5O_mcdt_search_cb_t)(void *op_data);
//! <!-- [H5O_mcdt_search_cb_t_snip] -->

/********************/
/* Public Variables */
/********************/

/*********************/
/* Public Prototypes */
/*********************/
#ifdef __cplusplus
extern "C" {
#endif

/**
 *-------------------------------------------------------------------------
 * \ingroup H5O
 *
 * \brief Opens an object in an HDF5 file by location identifier and path name.
 *
 * \fgdta_loc_obj_id{loc_id}
 * \param[in] name Path to the object; relative to \p loc_id
 * \lapl_id
 *
 * \return \hid_tv{object}
 *
 * \details H5Oopen() opens a group, dataset, or committed (named) datatype
 *          specified by a location, \p loc_id, and a path name, \p name, in an HDF5 file.
 *
 *          This function opens the object in the same manner as H5Gopen(), H5Topen(), and H5Dopen().
 *          However, H5Oopen() does not require the type of object to be known beforehand.
 *          This can be useful with user-defined links, for instance, when only a path may be known.
 *
 *          H5Oopen() cannot be used to open a dataspace, attribute, property list, or file.
 *
 *          Once an object of an unknown type has been opened with H5Oopen(),
 *          the type of that object can be determined by means of an H5Iget_type() call.
 *
 *          \p loc_id may be a file, group, dataset, named datatype, or attribute.
 *          If an attribute is specified for \p loc_id then the object where the
 *          attribute is attached will be accessed.
 *
 *          \p name must be the path to that object relative to \p loc_id.
 *
 *          \p lapl_id is the link access property list associated with the link pointing to
 *          the object.  If default link access properties are appropriate, this can be
 *          passed in as #H5P_DEFAULT.
 *
 *          When it is no longer needed, the opened object should be closed with
 *          H5Oclose(), H5Gclose(), H5Tclose(), or H5Dclose().
 *
 * \version 1.8.1 Fortran subroutine introduced in this release.
 *
 * \since 1.8.0
 *
 */
H5_DLL hid_t H5Oopen(hid_t loc_id, const char *name, hid_t lapl_id);
/**
 * --------------------------------------------------------------------------
 * \ingroup ASYNC
 * \async_variant_of{H5Oopen}
 */
#ifndef H5_DOXYGEN
H5_DLL hid_t H5Oopen_async(const char *app_file, const char *app_func, unsigned app_line, hid_t loc_id,
                           const char *name, hid_t lapl_id, hid_t es_id);
#else
H5_DLL hid_t  H5Oopen_async(hid_t loc_id, const char *name, hid_t lapl_id, hid_t es_id);
#endif

/**
 *-------------------------------------------------------------------------
 * \ingroup H5O
 *
 * \brief Opens an object in an HDF5 file using its VOL independent token
 *
 * \fgdta_loc_obj_id{loc_id}
 * \param[in] token Object token
 *
 * \return \hid_ti{object}
 *
 * \details H5Oopen_by_token() opens an object specified by the object
 *          identifier, \p loc_id and object token, \p token.
 *
 * \since 1.12.0
 *
 */
H5_DLL hid_t H5Oopen_by_token(hid_t loc_id, H5O_token_t token);

/**
 *-------------------------------------------------------------------------
 * \ingroup H5O
 *
 * \brief Opens the nth object in a group
 *
 * \fgdta_loc_obj_id{loc_id}
 * \param[in] group_name Name of group, relative to \p loc_id, in which object is located
 * \idx_type
 * \order
 * \param[in] n Object to open
 * \lapl_id
 *
 * \return \hid_tv{object}
 *
 * \details H5Oopen_by_idx() opens the nth object in the group specified by \p loc_id
 *          and \p group_name.
 *
 *          \p loc_id specifies a location identifier.
 *          \p group_name specifies the group relative to \p loc_id in which the object can be found.
 *          If \p loc_id fully specifies the group in which the object resides,
 *          \p group_name can be a dot (.).
 *
 *          The specific object to be opened within the group is specified by the three parameters:
 *          \p idx_type, \p order and \p n.
 *
 *          \p idx_type specifies the type of index by which objects are ordered.
 *          Valid index types include the following:
 *
 *          \indexes
 *
 *          \p order specifies the order in which the objects are to be referenced for the purposes
 *          of this function.  Valid orders include the following:
 *
 *          \orders
 *
 *          Note that for #H5_ITER_NATIVE, rather than implying a particular order,
 *          it instructs the HDF5 library to iterate through the objects in the fastest
 *          available order, i.e., in a natural order.
 *
 *          \p n specifies the position of the object within the index.  Note that this count is
 *          zero-based; 0 (zero) indicates that the function will return the value of the first object;
 *          if \p n is 5, the function will return the value of the sixth object; etc.
 *
 *          \p lapl_id specifies the link access property list to be used in accessing the object.
 *
 *          An object opened with this function should be closed when it is no longer needed so that
 *          resource leaks will not develop.  H5Oclose() can be used to close groups, datasets,
 *          or committed datatypes.
 *
 * \version 1.8.1 Fortran subroutine introduced in this release.
 *
 * \since 1.8.0
 *
 */
H5_DLL hid_t H5Oopen_by_idx(hid_t loc_id, const char *group_name, H5_index_t idx_type, H5_iter_order_t order,
                            hsize_t n, hid_t lapl_id);
/**
 * --------------------------------------------------------------------------
 * \ingroup ASYNC
 * \async_variant_of{H5Oopen_by_idx}
 */
#ifndef H5_DOXYGEN
H5_DLL hid_t H5Oopen_by_idx_async(const char *app_file, const char *app_func, unsigned app_line, hid_t loc_id,
                                  const char *group_name, H5_index_t idx_type, H5_iter_order_t order,
                                  hsize_t n, hid_t lapl_id, hid_t es_id);
#else
H5_DLL hid_t  H5Oopen_by_idx_async(hid_t loc_id, const char *group_name, H5_index_t idx_type,
                                   H5_iter_order_t order, hsize_t n, hid_t lapl_id, hid_t es_id);
#endif

/**
 *-------------------------------------------------------------------------
 * \ingroup H5O
 *
 * \brief Determines whether a link resolves to an actual object.
 *
 * \fgdta_loc_obj_id{loc_id}
 * \param[in] name The name of the link to check
 * \lapl_id
 *
 * \return Returns a positive value if the object pointed to by
 *         the \p loc_id and \p name combination exists.
 * \return Returns 0 if the object pointed to by
 *         the \p loc_id and \p name combination does not exist.
 * \return Returns a negative value when the function fails.
 *
 * \details H5Oexists_by_name() allows an application to determine whether
 *          the link \p name in the group or file specified with \p loc_id
 *          resolves to an HDF5 object to open or if the link dangles. The
 *          link may be of any type, but hard links will always resolve
 *          to objects and do not need to be verified.
 *
 *          Note that H5Oexists_by_name() verifies only that the target
 *          object exists. If \p name includes either a relative path or
 *          an absolute path to the target link, intermediate steps
 *          along the path must be verified before the existence of
 *          the target link can be safely checked. If the path is not
 *          verified and an intermediate element of the path does not
 *          exist, H5Oexists_by_name() will fail. The example in the next
 *          paragraph illustrates one step-by-step method for verifying
 *          the existence of a link with a relative or absolute path.
 *
 * \par Example
 *          Use the following steps to verify the existence of
 *          the link \c datasetD in the \c group group1/group2/softlink_to_group3/,
 *          where \c group1 is a member of the group specified by \c loc_id:
 *
 * \par
 *      - First, use H5Lexists() to verify that a link named \c group1 exists.
 *      - If \c group1 exists, use H5Oexists_by_name() to verify that the
 *        link \c group1 resolves to an object.
 *      - If \c group1 exists, use H5Lexists() again, this time with the name
 *        set to \c group1/group2, to verify that the link \c group2 exists
 *        in \c group1.
 *      - If the \c group2 link exists, use H5Oexists_by_name() to verify
 *        that \c group1/group2 resolves to an object.
 *      - If \c group2 exists, use  H5Lexists() again, this time with the name
 *        set to \c group1/group2/softlink_to_group3, to verify that the
 *        link \c softlink_to_group3 exists in \c group2.
 *      - If the \c softlink_to_group3 link exists, use H5Oexists_by_name()
 *        to verify that \c group1/group2/softlink_to_group3 resolves to
 *        an object.
 *      - If \c softlink_to_group3 exists, you can now safely use H5Lexists
 *        with the name set to \c group1/group2/softlink_to_group3/datasetD to
 *        verify that the target link, \c datasetD, exists.
 *      - And finally, if the link \c datasetD exists, use H5Oexists_by_name
 *        to verify that \c group1/group2/softlink_to_group3/datasetD
 *        resolves to an object.
 *
 * \par
 *          If the link to be verified is specified with an absolute path,
 *          the same approach should be used, but starting with the first
 *          link in the file’s root group. For instance, if \c datasetD
 *          were in \c /group1/group2/softlink_to_group3, the first call to
 *          H5Lexists() would have name set to \c /group1.
 *
 * \par
 *          Note that this is an outline and does not include all the necessary
 *          details. Depending on circumstances, for example, an application
 *          may need to verify the type of an object also.
 *
 * \warning \Bold{Failure Modes:}
 * \warning If \p loc_id and \p name both exist, but the combination does not
 *          resolve to an object, the function will return 0 (zero);
 *          the function does not fail in this case.
 * \warning If either the location or the link specified by the \p loc_id
 *          and \p name combination does not exist, the function will fail,
 *          returning a negative value.
 * \warning Note that verifying the existence of an object within an HDF5
 *          file is a multistep process. An application can be certain the
 *          object does not exist only if H5Lexists()  and H5Oexists_by_name()
 *          have been used to verify the existence of the links and groups
 *          in the hierarchy above that object. The example above, in the
 *          function description, provides a step-by-step description of
 *          that verification process.
 *
 * \version 1.8.11 Fortran subroutine introduced in this release.
 *
 * \since 1.8.5
 *
 */
H5_DLL htri_t H5Oexists_by_name(hid_t loc_id, const char *name, hid_t lapl_id);

/**
 *-------------------------------------------------------------------------
 * \ingroup H5O
 *
 * \brief Retrieves the metadata for an object specified by an identifier
 *
 * \fgdta_loc_obj_id{loc_id}
 * \param[out] oinfo Buffer in which to return object information
 * \param[in] fields Flags specifying the fields to include in \p oinfo
 *
 * \return \herr_t
 *
 * \details H5Oget_info3() specifies an object by its identifier, \p loc_id , and
 *          retrieves the metadata describing that object in \p oinfo.
 *
 *          The \p fields parameter contains flags to determine which fields will be filled in
 *          the H5O_info2_t \c struct returned in \p oinfo.
 *          These flags are defined in the H5Opublic.h file:
 *
 *          \obj_info_fields
 *
 * \par Example
 *      An example snippet from examples/h5_attribute.c:
 * \par
 *      \snippet h5_attribute.c H5Oget_info3_snip
 *
 * \note If you are iterating through a lot of different objects to
 *       retrieve information via the H5Oget_info() family of routines,
 *       you may see memory building up. This can be due to memory
 *       allocation for metadata, such as object headers and messages,
 *       when the iterated objects are put into the metadata cache.
 * \note
 *       If the memory buildup is not desirable, you can configure a
 *       smaller cache via H5Fset_mdc_config() or set the file access
 *       property list via H5Pset_mdc_config(). A smaller sized cache
 *       will force metadata entries to be evicted from the cache,
 *       thus freeing the memory associated with the entries.
 *
 * \since 1.12.0
 *
 */
H5_DLL herr_t H5Oget_info3(hid_t loc_id, H5O_info2_t *oinfo, unsigned fields);

/**
 *-------------------------------------------------------------------------
 * \ingroup H5O
 *
 * \brief Retrieves the metadata for an object, identifying the object by
 *        location and relative name
 *
 * \fgdta_loc_obj_id{loc_id}
 * \param[in] name Name of object, relative to \p loc_id
 * \param[out] oinfo Buffer in which to return object information
 * \param[in] fields Flags specifying the fields to include in \p oinfo
 * \lapl_id
 *
 * \return \herr_t
 *
 * \details H5Oget_info_by_name3() specifies an object’s location and name,
 *          \p loc_id and \p name, respectively, and retrieves the metadata
 *          describing that object in \p oinfo, an H5O_info2_t struct.
 *
 *          The \p fields parameter contains flags to determine which fields will be filled in
 *          the H5O_info2_t \c struct returned in \p oinfo.
 *          These flags are defined in the H5Opublic.h file:
 *
 *          \obj_info_fields
 *
 *          The link access property list, \c lapl_id, is not currently used;
 *          it should be passed in as #H5P_DEFAULT.
 *
 * \par Example
 *      An example snippet from test/vol.c:
 *      \snippet vol.c H5Oget_info_by_name3_snip
 *
 * \since 1.12.0
 *
 */
H5_DLL herr_t H5Oget_info_by_name3(hid_t loc_id, const char *name, H5O_info2_t *oinfo, unsigned fields,
                                   hid_t lapl_id);
/**
 * --------------------------------------------------------------------------
 * \ingroup ASYNC
 * \async_variant_of{H5Oget_info_by_name}
 */
#ifndef H5_DOXYGEN
H5_DLL herr_t H5Oget_info_by_name_async(const char *app_file, const char *app_func, unsigned app_line,
                                        hid_t loc_id, const char *name, H5O_info2_t *oinfo /*out*/,
                                        unsigned fields, hid_t lapl_id, hid_t es_id);
#else
H5_DLL herr_t H5Oget_info_by_name_async(hid_t loc_id, const char *name, H5O_info2_t *oinfo /*out*/,
                                        unsigned fields, hid_t lapl_id, hid_t es_id);
#endif

/**
 *-------------------------------------------------------------------------
 * \ingroup H5O
 *
 * \brief Retrieves the metadata for an object, identifying the object
 *        by an index position
 *
 * \fgdta_loc_obj_id{loc_id}
 * \param[in] group_name Name of group in which object is located
 * \idx_type
 * \order
 * \param[in] n Position within the index
 * \param[out] oinfo Buffer in which to return object information
 * \param[in] fields Flags specifying the fields to include in \p oinfo
 * \lapl_id
 *
 * \return \herr_t
 *
 * \details H5Oget_info_by_idx3() retrieves the metadata describing an
 *          object in the \c struct \p oinfo, as specified by the location,
 *          \p loc_id, group name, \p group_name, the index by which objects
 *          in that group are tracked, \p idx_type, the order by which the
 *          index is to be traversed, \p order, and an object’s position
 *          \p n within that index.
 *
 *          If \p loc_id fully specifies the group in which the object resides,
 *          \p group_name can be a dot (\c .).
 *
 *          The \p fields parameter contains flags to determine which fields will be filled in
 *          the H5O_info2_t \c struct returned in \p oinfo.
 *          These flags are defined in the H5Opublic.h file:
 *          \obj_info_fields
 *
 *          The link access property list, \c lapl_id, is not currently used;
 *          it should be passed in as #H5P_DEFAULT.
 *
 * \par Example
 *      An example snippet from test/titerate.c:
 *      \snippet titerate.c H5Oget_info_by_idx3_snip
 *
 * \since 1.12.0
 *
 */
H5_DLL herr_t H5Oget_info_by_idx3(hid_t loc_id, const char *group_name, H5_index_t idx_type,
                                  H5_iter_order_t order, hsize_t n, H5O_info2_t *oinfo, unsigned fields,
                                  hid_t lapl_id);

/**
 *-------------------------------------------------------------------------
 * \ingroup H5O
 *
 * \brief Retrieve native file format information about an object
 *
 * \fgdta_loc_obj_id{loc_id}
 * \param[out] oinfo Buffer in which to return native object information
 * \param[in] fields Flags to determine which fields in \p oinfo are filled in
 *
 * \return \herr_t
 *
 * \details H5Oget_native_info() retrieves the native file format information for an object
 *          specified by \p loc_id.
 *
 *          The \p fields parameter indicates which fields to fill in
 *          H5O_native_info_t. Possible values defined in H5Opublic.h are:
 *
 *          \snippet this H5O_native_info_fields_snip
 *
 * \par Example
 *      An example snippet from test/tfile.c:
 * \par
 *      \snippet tfile.c H5Oget_native_info_snip
 *
 * \since 1.12.0
 *
 */
H5_DLL herr_t H5Oget_native_info(hid_t loc_id, H5O_native_info_t *oinfo, unsigned fields);

/**
 *-------------------------------------------------------------------------
 * \ingroup H5O
 *
 * \brief Retrieve native file format information about an object given its name
 *
 * \fgdta_loc_obj_id{loc_id}
 * \param[in] name Name of object
 * \param[out] oinfo Buffer in which to return native object information
 * \param[in] fields Flags to determine which fields in \p oinfo are filled in
 * \lapl_id
 *
 * \return \herr_t
 *
 * \details H5Oget_native_info_by_name() retrieves the native file format
 *          information for an object specified by \p loc_id and the name \p
 *          name.
 *
 *          The \p fields parameter which fields to fill in H5O_native_info_t.
 *          Possible values defined in H5Opublic.h are:
 *
 *          \snippet this H5O_native_info_fields_snip
 *
 * \par Example
 *      An example snippet from test/tfile.c:
 *      \snippet tfile.c H5Oget_native_info_by_name_snip
 *
 * \since 1.12.0
 *
 */
H5_DLL herr_t H5Oget_native_info_by_name(hid_t loc_id, const char *name, H5O_native_info_t *oinfo,
                                         unsigned fields, hid_t lapl_id);

/**
 *-------------------------------------------------------------------------
 * \ingroup H5O
 *
 * \brief Retrieve native file format information about an object
 *        according to the order of an index
 *
 * \fgdta_loc_obj_id{loc_id}
 * \param[in] group_name Name of group in which object is located
 * \idx_type
 * \order
 * \param[in] n Position within the index
 * \param[out] oinfo Buffer in which to return native object information
 * \param[in] fields Flags to determine which fields in \p oinfo are filled in
 * \lapl_id
 *
 * \return \herr_t
 *
 * \details H5Oget_native_info_by_idx() retrieves the native file format information for an object
 *          specified by \p loc_id, group name, \p group_name, the index by which
 *          objects in the group are tracked, \p idx_type, the order by which
 *          the index is to be traversed, \p order , and an object's position
 *          \p n within that index.
 *
 *          The \p fields parameter indicates which fields to fill in H5O_native_info_t.
 *          Possible values defined in H5Opublic.h are:
 *          \snippet this H5O_native_info_fields_snip
 *
 *          The link access property list, \c lapl_id, is not currently used;
 *          it should be passed in as #H5P_DEFAULT.
 *
 * \since 1.12.0
 *
 */
H5_DLL herr_t H5Oget_native_info_by_idx(hid_t loc_id, const char *group_name, H5_index_t idx_type,
                                        H5_iter_order_t order, hsize_t n, H5O_native_info_t *oinfo,
                                        unsigned fields, hid_t lapl_id);

/**
 *-------------------------------------------------------------------------
 * \ingroup H5O
 *
 * \brief Creates a hard link to an object in an HDF5 file
 *
 * \param[in] obj_id Object to be linked


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