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authorbljhdf <58825073+bljhdf@users.noreply.github.com>2020-12-24 04:13:14 (GMT)
committerGitHub <noreply@github.com>2020-12-24 04:13:14 (GMT)
commit5c9d08a964b80e25608a60e2425d9c838cf8055e (patch)
tree2f2af30662e819d0d7a2c92eed68a302c310dc80 /src
parent5af00191b50f32dee63320dd2033515a3d931456 (diff)
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Doxygen: Added more H5P RM entries (#226)
* Doxygen - RM entries for H5A, H5S, and H5P APIs * fix issues on ubuntu * added missing H5F_fspace_strategy_t_snip * Doxygen: Add more H5P functions Co-authored-by: hdfhelp <hdfhelp@jelly.ad.hdfgroup.org>
Diffstat (limited to 'src')
-rw-r--r--src/H5Ppublic.h1098
1 files changed, 1058 insertions, 40 deletions
diff --git a/src/H5Ppublic.h b/src/H5Ppublic.h
index 5624db9..90383bd 100644
--- a/src/H5Ppublic.h
+++ b/src/H5Ppublic.h
@@ -645,7 +645,7 @@ H5_DLL hid_t H5Pdecode(const void *buf);
* Some properties cannot be encoded, particularly properties that are
* reliant on local context.
*
- * \note \a Motivation:
+ * \b Motivation:
* This function was introduced in HDF5-1.12 as part of the \a H5Sencode
* format change to enable 64-bit selection encodings and a dataspace
* selection that is tied to a file.
@@ -3660,7 +3660,7 @@ H5_DLL herr_t H5Pset_alignment(hid_t fapl_id, hsize_t threshold,
* The \p mdc_nelmts parameter is no longer used; any value passed
* in that parameter will be ignored.
*
- * \note \b Motivation: Setting raw data chunk cache parameters
+ * \b Motivation: Setting raw data chunk cache parameters
* can be done with H5Pset_cache(), H5Pset_chunk_cache(),
* or a combination of both. H5Pset_cache() is used to
* adjust the chunk cache parameters for all datasets via
@@ -4584,7 +4584,7 @@ H5_DLL herr_t H5Pset_chunk(hid_t plist_id, int ndims, const hsize_t dim[/*ndims*
* dataspace are affected by this option. Such chunks are
* referred to as partial edge chunks.
*
- * \note \b Motivation: H5Pset_chunk_opts() is used to specify storage
+ * \b Motivation: H5Pset_chunk_opts() is used to specify storage
* options for chunks on the edge of a dataset’s dataspace. This
* capability allows the user to tune performance in cases where
* the dataset size may not be a multiple of the chunk size and
@@ -4832,13 +4832,6 @@ H5_DLL herr_t H5Pset_shuffle(hid_t plist_id);
*
*/
H5_DLL herr_t H5Pset_layout(hid_t plist_id, H5D_layout_t layout);
-//! [nbit_code_snip]
-/*
-hid_t nbit_datatype = H5Tcopy(H5T_STD_I32LE);
-H5Tset_precision(nbit_datatype, 16);
-H5Tset_offset(nbit_datatype, 4);
-*/
-//! [nbit_code_snip]
/**
* \ingroup DCPL
*
@@ -4853,7 +4846,11 @@ H5Tset_offset(nbit_datatype, 4);
*
* The HDF5 user can create an N-Bit datatype with the following
* code:
- * \snippet this nbit_code_snip
+ * <pre>
+ * hid_t nbit_datatype = H5Tcopy(H5T_STD_I32LE);
+ * H5Tset_precision(nbit_datatype, 16);
+ * H5Tset_offset(nbit_datatype, 4);
+ * </pre>
*
* In memory, one value of the N-Bit datatype in the above example
* will be stored on a little-endian machine as follows:
@@ -4920,7 +4917,6 @@ H5Tset_offset(nbit_datatype, 4);
* other I/O filters.
*
* \version 1.8.8 Fortran subroutine introduced in this release.
- * \todo fix "nbit_code_snip"
*
* \since 1.8.0
*
@@ -5535,7 +5531,7 @@ H5_DLL herr_t H5Pset_append_flush(hid_t dapl_id, unsigned ndims,
* cause the cache to be too big, then the cache is pruned
* according to the \p rdcc_w0 parameter.
*
- * \note \b Motivation: H5Pset_chunk_cache() is used to adjust the chunk
+ * \b Motivation: H5Pset_chunk_cache() is used to adjust the chunk
* cache parameters on a per-dataset basis, as opposed to a global
* setting for the file using H5Pset_cache(). The optimum chunk
* cache parameters may vary widely with different data layout and
@@ -5544,7 +5540,7 @@ H5_DLL herr_t H5Pset_append_flush(hid_t dapl_id, unsigned ndims,
* reduce the size of the chunk cache for datasets whose
* performance is not important in order to save memory space.
*
- * \note \b Example \b Usage: The following code sets the chunk cache to
+ * \b Example \b Usage: The following code sets the chunk cache to
* use a hash table with 12421 elements and a maximum size of
* 16 MB, while using the preemption policy specified for the
* entire file:
@@ -5552,7 +5548,7 @@ H5_DLL herr_t H5Pset_append_flush(hid_t dapl_id, unsigned ndims,
* H5Pset_chunk_cache(dapl_id, 12421, 16*1024*1024,
* H5D_CHUNK_CACHE_W0_DEFAULT);}
*
- * \note \b Usage \b Notes: The chunk cache size is a property for
+ * \b Usage \b Notes: The chunk cache size is a property for
* accessing a dataset and is not stored with a dataset or a
* file. To guarantee the same chunk cache settings each time
* the dataset is opened, call H5Dopen() with a dataset access
@@ -5561,24 +5557,24 @@ H5_DLL herr_t H5Pset_append_flush(hid_t dapl_id, unsigned ndims,
* list can be used for multiple accesses in the same
* application.
*
- * \note For files where the same chunk cache size will be
+ * For files where the same chunk cache size will be
* appropriate for all or most datasets, H5Pset_cache() can
* be called with a file access property list to set the
* chunk cache size for accessing all datasets in the file.
*
- * \note Both methods can be used in combination, in which case
+ * Both methods can be used in combination, in which case
* the chunk cache size set by H5Pset_cache() will apply
* except for specific datasets where H5Dopen() is called
* with dataset property list with the chunk cache size
* set by H5Pset_chunk_cache().
*
- * \note In the absence of any cache settings, H5Dopen() will
+ * In the absence of any cache settings, H5Dopen() will
* by default create a 1 MB chunk cache for the opened
* dataset. If this size happens to be appropriate, no
* call will be needed to either function to set the
* chunk cache size.
*
- * \note It is also possible that a change in access pattern
+ * It is also possible that a change in access pattern
* for later access to a dataset will change the
* appropriate chunk cache size.
*
@@ -5871,20 +5867,219 @@ H5_DLL herr_t H5Pget_mpio_no_collective_cause(hid_t plist_id, uint32_t *local_no
#endif /* H5_HAVE_PARALLEL */
/* Link creation property list (LCPL) routines */
-H5_DLL herr_t H5Pset_create_intermediate_group(hid_t plist_id, unsigned crt_intmd);
+/**
+ * \ingroup ALCAPL
+ *
+ * \brief Determines whether property is set to enable creating missing
+ * intermediate groups
+ *
+ * \lcpl_id{plist_id}
+ * \param[out] crt_intmd Flag specifying whether to create intermediate
+ * groups upon creation of an object
+ *
+ * \return \herr_t
+ *
+ * \details H5Pget_create_intermediate_group() determines whether the link
+ * creation property list \p plist_id is set to allow functions
+ * that create objects in groups different from the current
+ * working group to create intermediate groups that may be
+ * missing in the path of a new or moved object.
+ *
+ * Functions that create objects in or move objects to a group
+ * other than the current working group make use of this
+ * property. H5Gcreate_anon() and H5Lmove() are examples of such
+ * functions.
+ *
+ * If \p crt_intmd is positive, missing intermediate groups will
+ * be created; if \p crt_intmd is non-positive, missing intermediate
+ * groups will not be created.
+ *
+ * \since 1.8.0
+ *
+ */
H5_DLL herr_t H5Pget_create_intermediate_group(hid_t plist_id, unsigned *crt_intmd /*out*/);
+/**
+ * \ingroup ALCAPL
+ *
+ * \brief Specifies in property list whether to create missing
+ * intermediate groups
+ *
+ * \lcpl_id{plist_id}
+ * \param[in] crt_intmd Flag specifying whether to create intermediate
+ * groups upon the creation of an object
+ *
+ * \return \herr_t
+ *
+ * \details H5Pset_create_intermediate_group()
+ *
+ * \since
+ *
+ */
+H5_DLL herr_t H5Pset_create_intermediate_group(hid_t plist_id, unsigned crt_intmd);
/* Group creation property list (GCPL) routines */
-H5_DLL herr_t H5Pset_local_heap_size_hint(hid_t plist_id, size_t size_hint);
+H5_DLL herr_t H5Pget_est_link_info(hid_t plist_id, unsigned *est_num_entries /* out */, unsigned *est_name_len /* out */);
+/**
+ * \ingroup GCPL
+ *
+ * \brief Queries whether link creation order is tracked and/or indexed in
+ * a group
+ *
+ * \param[in] plist_id Group or file creation property list
+ * identifier
+ * \param[out] crt_order_flags Creation order flag(s)
+ *
+ * \return \herr_t
+ *
+ * \details H5Pget_link_creation_order() queries the group or file creation
+ * property list, \p plist_id, and returns a flag indicating whether
+ * link creation order is tracked and/or indexed in a group.
+ *
+ * See H5Pset_link_creation_order() for a list of valid creation
+ * order flags, as passed in \p crt_order_flags, and their
+ * meanings.
+ *
+ * \since 1.8.0
+ *
+ */
+H5_DLL herr_t H5Pget_link_creation_order(hid_t plist_id, unsigned *crt_order_flags /* out */);
+/**
+ * \ingroup GCPL
+ *
+ * \brief Queries the settings for conversion between compact and dense
+ * groups
+ *
+ * \gcpl_id{plist_id}
+ * \param[out] max_compact Maximum number of links for compact storage
+ * \param[out] min_dense Minimum number of links for dense storage
+ *
+ * \return \herr_t
+ *
+ * \details H5Pget_link_phase_change() queries the maximum number of
+ * entries for a compact group and the minimum number of links
+ * to require before converting a group to a dense form.
+ *
+ * In the compact format, links are stored as messages in the
+ * group’s header. In the dense format, links are stored in a
+ * fractal heap and indexed with a version 2 B-tree.
+ *
+ * \p max_compact is the maximum number of links to store as
+ * header messages in the group header before converting the
+ * group to the dense format. Groups that are in the compact
+ * format and exceed this number of links are automatically
+ * converted to the dense format.
+ *
+ * \p min_dense is the minimum number of links to store in the
+ * dense format. Groups which are in dense format and in which
+ * the number of links falls below this number are automatically
+ * converted back to the compact format.
+ *
+ * In the compact format, links are stored as messages in the
+ * group’s header. In the dense format, links are stored in a
+ * fractal heap and indexed with a version 2 B-tree.
+ *
+ * See H5Pset_link_phase_change() for a discussion of
+ * traditional, compact, and dense group storage.
+ *
+ * \since 1.8.0
+ *
+ */
+H5_DLL herr_t H5Pget_link_phase_change(hid_t plist_id, unsigned *max_compact /*out*/, unsigned *min_dense /*out*/);
H5_DLL herr_t H5Pget_local_heap_size_hint(hid_t plist_id, size_t *size_hint /*out*/);
-H5_DLL herr_t H5Pset_link_phase_change(hid_t plist_id, unsigned max_compact, unsigned min_dense);
-H5_DLL herr_t H5Pget_link_phase_change(hid_t plist_id, unsigned *max_compact /*out*/,
- unsigned *min_dense /*out*/);
H5_DLL herr_t H5Pset_est_link_info(hid_t plist_id, unsigned est_num_entries, unsigned est_name_len);
-H5_DLL herr_t H5Pget_est_link_info(hid_t plist_id, unsigned *est_num_entries /* out */,
- unsigned *est_name_len /* out */);
+/**
+ * \ingroup GCPL
+ *
+ * \brief Sets creation order tracking and indexing for links in a group
+ *
+ * \param[in] plist_id Group or file creation property list
+ * identifier
+ * \param[out] crt_order_flags Creation order flag(s)
+ *
+ * \return \herr_t
+ *
+ * \details H5Pset_link_creation_order() sets flags for tracking and
+ * indexing links on creation order in groups created with the
+ * group (or file) creation property list \p plist_id.
+ *
+ * \p crt_order_flags contains flags with the following meanings:
+ *
+ * <table>
+ * <tr>
+ * <td>#H5P_CRT_ORDER_TRACKED</td>
+ * <td>Link creation order is tracked but not necessarily
+ * indexed</td>
+ * </tr>
+ * <tr>
+ * <td>#H5P_CRT_ORDER_INDEXED</td>
+ * <td>Link creation order is indexed (requires
+ * #H5P_CRT_ORDER_TRACKED)</td>
+ * </tr>
+ * </table>
+ *
+ * The default behavior is that links are tracked and indexed by
+ * name, and link creation order is neither tracked nor indexed.
+ * The name is always the primary index for links in a group.
+ *
+ * H5Pset_link_creation_order() can be used to set link creation
+ * order tracking, or to set link creation order tracking and
+ * indexing.
+ *
+ * If (#H5P_CRT_ORDER_TRACKED | #H5P_CRT_ORDER_INDEXED) is
+ * specified for \p crt_order_flags, then links will be tracked
+ * and indexed by creation order. The creation order is added as
+ * a secondary index and enables faster queries and iterations
+ * by creation order.
+ *
+ * If just #H5P_CRT_ORDER_TRACKED is specified for
+ * \p crt_order_flags, then links will be tracked by creation
+ * order, but not indexed by creation order. Queries and iterations
+ * by creation order will work but will be much slower for large
+ * groups than if #H5P_CRT_ORDER_INDEXED had been included.
+ *
+ * \note If a creation order index is to be built, it must be specified in
+ * the group creation property list. HDF5 currently provides no
+ * mechanism to turn on link creation order tracking at group
+ * creation time and to build the index later.
+ *
+ * \since 1.8.0
+ *
+ */
H5_DLL herr_t H5Pset_link_creation_order(hid_t plist_id, unsigned crt_order_flags);
-H5_DLL herr_t H5Pget_link_creation_order(hid_t plist_id, unsigned *crt_order_flags /* out */);
+/**
+ * \ingroup GCPL
+ *
+ * \brief Sets the parameters for conversion between compact and dense
+ * groups
+ *
+ * \gcpl_id{plist_id}
+ * \param[in] max_compact Maximum number of links for compact storage
+ * (\a Default: 8)
+ * \param[in] min_dense Minimum number of links for dense storage
+ * (\a Default: 6)
+ *
+ * \return \herr_t
+ *
+ * \details H5Pset_link_phase_change() sets the maximum number of entries
+ * for a compact group and the minimum number of links to allow
+ * before converting a dense group back to the compact format.
+ *
+ * \p max_compact is the maximum number of links to store as
+ * header messages in the group header before converting the
+ * group to the dense format. Groups that are in compact format
+ * and which exceed this number of links are automatically
+ * converted to dense format.
+ *
+ * \p min_dense is the minimum number of links to store in the
+ * dense format. Groups which are in dense format and in which
+ * the number of links falls below this threshold are
+ * automatically converted to compact format.
+ *
+ * \since 1.8.0
+ *
+ */
+H5_DLL herr_t H5Pset_link_phase_change(hid_t plist_id, unsigned max_compact, unsigned min_dense);
+H5_DLL herr_t H5Pset_local_heap_size_hint(hid_t plist_id, size_t size_hint);
/* Map access property list (MAPL) routines */
#ifdef H5_HAVE_MAP_API
@@ -5894,28 +6089,851 @@ H5_DLL herr_t H5Pget_map_iterate_hints(hid_t mapl_id, size_t *key_prefetch_size
#endif /* H5_HAVE_MAP_API */
/* String creation property list (STRCPL) routines */
-H5_DLL herr_t H5Pset_char_encoding(hid_t plist_id, H5T_cset_t encoding);
+/**
+ * \ingroup ALCAPL
+ *
+ * \brief Retrieves the character encoding used to create a link or
+ * attribute name
+ *
+ * \param[in] plist_id Link creation or attribute creation property list
+ * identifier
+ * \param[out] encoding String encoding character set
+ *
+ * \return \herr_t
+ *
+ * \details H5Pget_char_encoding() retrieves the character encoding used
+ * to encode link or attribute names that are created with the
+ * property list \p plist_id.
+ *
+ * Valid values for \p encoding are defined in H5Tpublic.h and
+ * include the following:
+ *
+ * \csets
+ *
+ * \note H5Pget_char_encoding() retrieves the character set used for an
+ * HDF5 link or attribute name while H5Tget_cset() retrieves the
+ * character set used in a character or string datatype.
+ *
+ * \since 1.8.0
+ *
+ */
H5_DLL herr_t H5Pget_char_encoding(hid_t plist_id, H5T_cset_t *encoding /*out*/);
+/**
+ * \ingroup ALCAPL
+ *
+ * \brief Sets the character encoding used to encode link and attribute
+ * names
+ *
+ * \param[in] plist_id Link creation or attribute creation property list
+ * identifier
+ * \param[in] encoding String encoding character set
+ *
+ * \return \herr_t
+ *
+ * \details H5Pset_char_encoding() sets the character encoding used for
+ * the names of links (which provide the names by which objects
+ * are referenced) or attributes created with the property list
+ * \p plist_id.
+ *
+ * Valid values for encoding include the following:
+ * \csets
+ * \details For example, if the character set for the property list
+ * \p plist_id is set to #H5T_CSET_UTF8, link names pointing to
+ * objects created with the link creation property list
+ * \p plist_id will be encoded using the UTF-8 character set.
+ * Similarly, names of attributes created with the attribute
+ * creation property list \p plist_id will be encoded as UTF-8.
+ *
+ * ASCII and UTF-8 Unicode are the only currently supported
+ * character encodings. Extended ASCII encodings (for example,
+ * ISO 8859) are not supported. This encoding policy is not
+ * enforced by the HDF5 library. Using encodings other than
+ * ASCII and UTF-8 can lead to compatibility and usability
+ * problems.
+ *
+ * \note H5Pset_char_encoding() sets the character set used for an
+ * HDF5 link or attribute name while H5Tset_cset() sets the
+ * character set used in a character or string datatype.
+ *
+ * \since 1.8.0
+ *
+ */
+H5_DLL herr_t H5Pset_char_encoding(hid_t plist_id, H5T_cset_t encoding);
/* Link access property list (LAPL) routines */
-H5_DLL herr_t H5Pset_nlinks(hid_t plist_id, size_t nlinks);
-H5_DLL herr_t H5Pget_nlinks(hid_t plist_id, size_t *nlinks);
-H5_DLL herr_t H5Pset_elink_prefix(hid_t plist_id, const char *prefix);
+/**
+ * \ingroup LAPL
+ *
+ * \brief Retrieves the external link traversal file access flag from the
+ * specified link access property list
+ *
+ * \lapl_id
+ * \param[out] flags File access flag for link traversal
+ *
+ * \return \herr_t
+ *
+ * \details H5Pget_elink_acc_flags() retrieves the file access flag used
+ * to open an external link target file from the specified link
+ * access property list.
+ *
+ * Valid values for \p flags include:
+ * \li #H5F_ACC_RDWR - Files opened through external links will
+ * be opened with write access
+ * \li #H5F_ACC_RDONLY - Files opened through external links will
+ * be opened with read-only access
+ * \li #H5F_ACC_DEFAULT - Files opened through external links will
+ * be opened with the same access flag as
+ * the parent file
+ *
+ * The value returned, if it is not #H5F_ACC_DEFAULT, will
+ * override the default access flag, which is the access flag
+ * used to open the parent file.
+ *
+ * <b>Example Usage:</b>
+ * The following code retrieves the external link access flag
+ * settings on the link access property list \p lapl_id into a
+ * local variable:
+ * <pre>
+ * unsigned acc_flags;
+ * status = H5Pget_elink_acc_flags(lapl_id, &acc_flags);
+ * </pre>
+ *
+ * \since 1.8.3
+ *
+ */
+H5_DLL herr_t H5Pget_elink_acc_flags(hid_t lapl_id, unsigned *flags);
+/**
+ * \ingroup LAPL
+ *
+ * \brief Retrieves the external link traversal callback function from the
+ * specified link access property list
+ *
+ * \lapl_id
+ * \param[out] func User-defined external link traversal callback
+ * function
+ * \param[out] op_data User-defined input data for the callback function
+ *
+ * \return \herr_t
+ *
+ * \details H5Pget_elink_cb() retrieves the user-defined external link
+ * traversal callback function defined in the specified link
+ * access property list.
+ *
+ * The callback function may adjust the file access property
+ * list and file access flag to use when opening a file through
+ * an external link. The callback will be executed by the HDF5
+ * library immediately before opening the target file.
+ *
+ * <b>Failure Modes:</b> H5Pget_elink_cb() will fail if the link
+ * access property list identifier, \p lapl_id, is invalid.
+ *
+ * An invalid function pointer or data pointer, \p func or
+ * \p op_data respectively, may cause a segmentation fault or an
+ * invalid memory access.
+ *
+ * <b>Example Usage:</b> The following code retrieves the external
+ * link callback settings on the link access property list
+ * \p lapl_id into local variables:
+ * <pre>
+ * H5L_elink_traverse_t elink_callback_func;
+ * void *elink_callback_udata;
+ * status = H5Pget_elink_cb (lapl_id, &elink_callback_func,
+ * &elink_callback_udata);
+ * </pre>
+ *
+ * \since 1.8.3
+ *
+ */
+H5_DLL herr_t H5Pget_elink_cb(hid_t lapl_id, H5L_elink_traverse_t *func, void **op_data);
+/**
+ * \ingroup LAPL
+ *
+ * \brief Retrieves the file access property list identifier associated
+ * with the link access property list
+ *
+ * \lapl_id
+ *
+ * \return \hid_t{file access property list}
+ *
+ * \details H5Pget_elink_fapl() retrieves the file access property list
+ * identifier that is set for the link access property list
+ * identifier, \p lapl_id. The library uses this file access
+ * property list identifier to open the target file for the
+ * external link access. When no such identifier is set, this
+ * routine returns #H5P_DEFAULT.
+ *
+ * \see H5Pset_elink_fapl() and H5Lcreate_external().
+ *
+ * \since 1.8.0
+ *
+ */
+H5_DLL hid_t H5Pget_elink_fapl(hid_t lapl_id);
+/**
+ * \ingroup LAPL
+ *
+ * \brief Retrieves prefix applied to external link paths
+ *
+ * \lapl_id{plist_id}
+ * \param[out] prefix Prefix applied to external link paths
+ * \param[in] size Size of prefix, including null terminator
+ *
+ * \return If successful, returns a non-negative value specifying the size
+ * in bytes of the prefix without the NULL terminator; otherwise
+ * returns a negative value.
+ *
+ * \details H5Pget_elink_prefix() retrieves the prefix applied to the
+ * path of any external links traversed.
+ *
+ * When an external link is traversed, the prefix is retrieved
+ * from the link access property list \p plist_id, returned in
+ * the user-allocated buffer pointed to by \p prefix, and
+ * prepended to the filename stored in the external link.
+ *
+ * The size in bytes of the prefix, including the NULL terminator,
+ * is specified in \p size. If size is unknown, a preliminary
+ * H5Pget_elink_prefix() call with the pointer \p prefix set to
+ * NULL will return the size of the prefix without the NULL
+ * terminator.
+ *
+ * \since 1.8.0
+ *
+ */
H5_DLL ssize_t H5Pget_elink_prefix(hid_t plist_id, char *prefix, size_t size);
-H5_DLL hid_t H5Pget_elink_fapl(hid_t lapl_id);
-H5_DLL herr_t H5Pset_elink_fapl(hid_t lapl_id, hid_t fapl_id);
-H5_DLL herr_t H5Pset_elink_acc_flags(hid_t lapl_id, unsigned flags);
-H5_DLL herr_t H5Pget_elink_acc_flags(hid_t lapl_id, unsigned *flags);
-H5_DLL herr_t H5Pset_elink_cb(hid_t lapl_id, H5L_elink_traverse_t func, void *op_data);
-H5_DLL herr_t H5Pget_elink_cb(hid_t lapl_id, H5L_elink_traverse_t *func, void **op_data);
+/**
+ * \ingroup LAPL
+ *
+ * \brief Retrieves the maximum number of link traversals
+ *
+ * \lapl_id{plist_id}
+ * \param[out] nlinks Maximum number of links to traverse
+ *
+ * \return \herr_t
+ *
+ * \details H5Pget_nlinks() retrieves the maximum number of soft or
+ * user-defined link traversals allowed, \p nlinks, before the
+ * library assumes it has found a cycle and aborts the traversal.
+ * This value is retrieved from the link access property list
+ * \p plist_id.
+ *
+ * The limit on the number of soft or user-defined link traversals
+ * is designed to terminate link traversal if one or more links
+ * form a cycle. User control is provided because some files may
+ * have legitimate paths formed of large numbers of soft or
+ * user-defined links. This property can be used to allow
+ * traversal of as many links as desired.
+ *
+ * \since 1.8.0
+ *
+ */
+H5_DLL herr_t H5Pget_nlinks(hid_t plist_id, size_t *nlinks);
+/**
+ * \ingroup LAPL
+ *
+ * \brief Sets the external link traversal file access flag in a link
+ * access property list
+ *
+ * \lapl_id
+ * \param[in] flags The access flag for external link traversal
+ *
+ * \return \herr_t
+ *
+ * \details H5Pset_elink_acc_flags() specifies the file access flag to use
+ * to open the target file of an external link. This allows
+ * read-only access of files reached through an external link in
+ * a file opened with write access, or vice-versa.
+ *
+ * Valid values for \p flags include:
+ * \li #H5F_ACC_RDWR - Causes files opened through external links
+ * to be opened with write access
+ * \li #H5F_ACC_RDONLY - Causes files opened through external
+ * links to be opened with read-only access
+ * \li #H5F_ACC_DEFAULT - Removes any external link file access
+ * flag setting from \p lapl_id, causing the file access flag
+ * setting to be taken from the parent file
+ *
+ * The library will normally use the file access flag used to
+ * open the parent file as the file access flag for the target
+ * file. This function provides a way to override that behavior.
+ * The external link traversal callback function set by
+ * H5Pset_elink_cb() can override the setting from
+ * H5Pset_elink_acc_flags().
+ *
+ * <b>Motivation:</b> H5Pset_elink_acc_flags() is used to adjust the
+ * file access flag used to open files reached through external links.
+ * This may be useful to, for example, prevent modifying files
+ * accessed through an external link. Otherwise, the target file is
+ * opened with whatever flag was used to open the parent.
+ *
+ * <b>Example Usage:</b> The following code sets the link access
+ * property list \p lapl_id to open external link target files with
+ * read-only access:
+ * <pre>
+ * status = H5Pset_elink_acc_flags(lapl_id, H5F_ACC_RDONLY);
+ * </pre>
+ *
+ * \since 1.8.3
+ *
+ */
+H5_DLL herr_t H5Pset_elink_acc_flags(hid_t lapl_id, unsigned flags);
+/**
+ * \ingroup LAPL
+ *
+ * \brief Sets the external link traversal callback function in a link
+ * access property list
+ *
+ * \lapl_id
+ * \param[in] func User-defined external link traversal callback
+ * function
+ * \param[in] op_data User-defined input data for the callback function
+ *
+ * \return \herr_t
+ *
+ * \details H5Pset_elink_cb() sets a user-defined external link traversal
+ * callback function in the link access property list \p lapl_id.
+ * The callback function \p func must conform to the prototype
+ * specified in #H5L_elink_traverse_t.
+ *
+ * The callback function may adjust the file access property
+ * list and file access flags to use when opening a file through
+ * an external link. The callback will be executed by the HDF5
+ * library immediately before opening the target file.
+ *
+ * The callback will be made after the file access property list
+ * set by H5Pset_elink_fapl() and the file access flag set by
+ * H5Pset_elink_acc_flags() are applied, so changes made by this
+ * callback function will take precedence.
+ *
+ * \attention A file close degree property setting (H5Pset_fclose_degree())
+ * in this callback function or an associated property list will
+ * be ignored. A file opened by means of traversing an external
+ * link is always opened with the weak file close degree
+ * property setting, #H5F_CLOSE_WEAK.
+ *
+ * <b>Motivation:</b> H5Pset_elink_cb() is used to specify a
+ * callback function that is executed by the HDF5 library when
+ * traversing an external link. This provides a mechanism to set
+ * specific access permissions, modify the file access property
+ * list, modify the parent or target file, or take any other
+ * user-defined action. This callback function is used in
+ * situations where the HDF5 library's default behavior is not
+ * suitable.
+ *
+ * <b>Failure Modes:</b> H5Pset_elink_cb() will fail if the link
+ * access property list identifier, \p lapl_id, is invalid or if
+ * the function pointer, \p func, is NULL.
+ *
+ * An invalid function pointer, \p func, will cause a segmentation
+ * fault or other failure when an attempt is subsequently made to
+ * traverse an external link.
+ *
+ * <b>Example Usage:</b>
+ * This example defines a callback function that prints the name
+ * of the target file every time an external link is followed, and
+ * sets this callback function on \p lapl_id.
+ * <pre>
+ * herr_t elink_callback(const char *parent_file_name, const char
+ * *parent_group_name, const char *child_file_name, const char
+ * *child_object_name, unsigned *acc_flags, hid_t fapl_id, void *op_data) {
+ * puts(child_file_name);
+ * return 0;
+ * }
+ * int main(void) {
+ * hid_t lapl_id = H5Pcreate(H5P_LINK_ACCESS);
+ * H5Pset_elink_cb(lapl_id, elink_callback, NULL);
+ * ...
+ * }
+ * </pre>
+ *
+ *
+ * \todo Add Programming Note for C++ Developers Using C Functions
+ *
+ *
+ * \since 1.8.3
+ *
+ */
+H5_DLL herr_t H5Pset_elink_cb(hid_t lapl_id, H5L_elink_traverse_t func, void *op_data);
+/**
+ * \ingroup LAPL
+ *
+ * \brief Sets a file access property list for use in accessing a file
+ * pointed to by an external link
+ *
+ * \lapl_id
+ * \fapl_id
+ *
+ * \return \herr_t
+ *
+ * \details H5Pset_elink_fapl() sets the file access property list,
+ * \p fapl_id, to be used when accessing the target file of an
+ * external link associated with \p lapl_id.
+ *
+ * \since 1.8.0
+ *
+ */
+H5_DLL herr_t H5Pset_elink_fapl(hid_t lapl_id, hid_t fapl_id);
+/**
+ * \ingroup LAPL
+ *
+ * \brief Sets prefix to be applied to external link paths
+ *
+ * \lapl_id{plist_id}
+ * \param[in] prefix Prefix to be applied to external link paths
+ *
+ * \return \herr_t
+ *
+ * \details H5Pset_elink_prefix() sets the prefix to be applied to the
+ * path of any external links traversed. The prefix is prepended
+ * to the filename stored in the external link.
+ *
+ * The prefix is specified in the user-allocated buffer \p prefix
+ * and set in the link access property list \p plist_id. The buffer
+ * should not be freed until the property list has been closed.
+ *
+ * \since 1.8.0
+ *
+ */
+H5_DLL herr_t H5Pset_elink_prefix(hid_t plist_id, const char *prefix);
+/**
+ * \ingroup LAPL
+ *
+ * \brief Sets maximum number of soft or user-defined link traversals
+ *
+ * \lapl_id{plist_id}
+ * \param[in] nlinks Maximum number of links to traverse
+ *
+ * \return \herr_t
+ *
+ * \details H5Pset_nlinks() sets the maximum number of soft or user-defined
+ * link traversals allowed, \p nlinks, before the library assumes
+ * it has found a cycle and aborts the traversal. This value is
+ * set in the link access property list \p plist_id.
+ *
+ * The limit on the number of soft or user-defined link traversals
+ * is designed to terminate link traversal if one or more links
+ * form a cycle. User control is provided because some files may
+ * have legitimate paths formed of large numbers of soft or
+ * user-defined links. This property can be used to allow
+ * traversal of as many links as desired.
+ *
+ * \since 1.8.0
+ *
+ */
+H5_DLL herr_t H5Pset_nlinks(hid_t plist_id, size_t nlinks);
/* Object copy property list (OCPYPL) routines */
-H5_DLL herr_t H5Pset_copy_object(hid_t plist_id, unsigned crt_intmd);
-H5_DLL herr_t H5Pget_copy_object(hid_t plist_id, unsigned *crt_intmd /*out*/);
+/**
+ * \ingroup OCPPL
+ *
+ * \brief Adds a path to the list of paths that will be searched in the
+ * destination file for a matching committed datatype
+ *
+ * \param[in] plist_id Object copy property list identifier
+ * \param[in] path The path to be added
+ *
+ * \return \herr_t
+ *
+ * \details H5Padd_merge_committed_dtype_path() adds a path, \p path,
+ * which points to a committed datatype, to the current list of
+ * suggested paths stored in the object copy property list
+ * \p plist_id. The search as described in the next paragraph is
+ * effective only if the #H5O_COPY_MERGE_COMMITTED_DTYPE_FLAG is
+ * enabled in the object copy property list via
+ * H5Pset_copy_object().
+ *
+ * When copying a committed datatype, a dataset with a committed
+ * datatype, or an object with an attribute of a committed
+ * datatype, the default behavior of H5Ocopy() is to search for
+ * a matching committed datatype:
+ * <ol>
+ * <li> First search the list of suggested paths in the object
+ * copy property list.</li>
+ * <li> Then, if no match has been found, search all the committed
+ * datatypes in the destination file.
+ * </ol>
+ * The default Step 2 in this search process can be changed by
+ * setting a callback function (see H5Pset_mcdt_search_cb()).
+ *
+ * Two datatypes are determined equal if their descriptions are
+ * identical, in a manner similar to H5Tequal(). If either
+ * committed datatype has one or more attributes, then all
+ * attributes must be present in both committed datatypes and they
+ * must be identical. Two attributes are considered identical if
+ * their datatype description, dataspace, and raw data values are
+ * the same. However, if an attribute uses a committed datatype,
+ * that committed datatype’s attributes will not be compared.
+ *
+ * If a match is found, H5Ocopy() will perform the following in
+ * the destination file:
+ * \li For a committed datatype, the library will create a hard
+ * link to the found datatype.
+ * \li For a dataset that uses a committed datatype, the library
+ * will modify the copied dataset to use the found committed
+ * datatype as its datatype.
+ * \li For an object with an attribute of a committed datatype,
+ * the library will modify the copied object’s attribute to
+ * use the found committed datatype as its datatype.
+ *
+ * If no match is found, H5Ocopy() will perform the following in
+ * the destination file:
+ * \li For a committed datatype, the library will copy it as it
+ * would any other object, creating a named committed
+ * datatype at the destination. That is, the library will
+ * create a committed datatype that is accessible in the
+ * file by a unique path.
+ * \li For a dataset that uses a committed datatype, the
+ * library will copy the datatype as an anonymous
+ * committed datatype and use that as the dataset’s
+ * datatype.
+ * \li For an object with an attribute of a committed datatype,
+ * the library will copy the datatype as an anonymous
+ * committed datatype and use that as the attribute’s
+ * datatype.
+ *
+ * \b Motivation: H5Padd_merge_committed_dtype_path() provides a
+ * means to override the default behavior of H5Ocopy() when
+ * #H5O_COPY_MERGE_COMMITTED_DTYPE_FLAG is set in an object
+ * copy property list.
+ * H5Padd_merge_committed_dtype_path() is the mechanism for
+ * suggesting search paths where H5Ocopy() will look for a
+ * matching committed datatype. This can be substantially
+ * faster than the default approach of searching the entire
+ * destination file for a match.
+ *
+ * \b Example \b Usage: This example adds two paths to the object
+ * copy property list. H5Ocopy() will search the two suggested
+ * paths for a match before searching all the committed datatypes
+ * in the destination file.
+ *
+ * <pre>
+ * int main(void) {
+ * hid_t ocpypl_id = H5Pcreate(H5P_OBJECT_COPY);
+ *
+ * H5Pset_copy_object(ocpypl_id, H5O_COPY_MERGE_COMMITTED_DTYPE_FLAG);
+ * H5Padd_merge_committed_dtype_path(ocpypl_id, "/group/committed_dtypeA");
+ * H5Padd_merge_committed_dtype_path(ocpypl_id, "/group2/committed_dset");
+ * H5Ocopy(...ocpypl_id...);
+ * ...
+ * ...
+ * }
+ * </pre>
+ *
+ * \note H5Padd_merge_committed_dtype_path() will fail if the object
+ * copy property list is invalid.
+ * It will also fail if there is insufficient memory when
+ * duplicating \p path.
+ *
+ * \see
+ * \li H5Ocopy()
+ * \li #H5O_mcdt_search_cb_t
+ * \li H5Padd_merge_committed_dtype_path()
+ * \li H5Pfree_merge_committed_dtype_paths()
+ * \li H5Pget_mcdt_search_cb()
+ * \li H5Pset_copy_object()
+ * \li H5Pset_mcdt_search_cb()
+ *
+ * \todo missing link to "Copying Committed Datatypes with H5Ocopy - A
+ * comprehensive discussion of copying committed datatypes (PDF)
+ * in Advanced Topics in HDF5
+ *
+ * \since 1.8.9
+ *
+ */
H5_DLL herr_t H5Padd_merge_committed_dtype_path(hid_t plist_id, const char *path);
+/**
+ * \ingroup OCPPL
+ *
+ * \brief Clears the list of paths stored in the object copy property list
+ *
+ * \param[in] plist_id Object copy property list identifier
+ *
+ * \return \herr_t
+ *
+ * \details H5Pfree_merge_committed_dtype_paths() clears the suggested
+ * paths stored in the object copy property list \p plist_id.
+ * These are the suggested paths previously set with
+ * H5Padd_merge_committed_dtype_path().
+ *
+ * \b Example \b Usage: This example adds a suggested path to the
+ * object copy property list, does the copy, clears the list, and
+ * then adds a new suggested path to the list for another copy.
+ *
+ * <pre>
+ * int main(void) {
+ * hid_t ocpypl_id = H5Pcreate(H5P_OBJECT_COPY);
+ *
+ * H5Pset_copy_object(ocpypl_id, H5O_COPY_MERGE_COMMITTED_DTYPE_FLAG);
+ * H5Padd_merge_committed_dtype_path(ocpypl_id, "/group/committed_dtypeA");
+ * H5Ocopy(...ocpypl_id...);
+ * ...
+ * ...
+ * H5Pfree_merge_committed_dtype_paths(ocpypl_id);
+ * H5Padd_merge_committed_dtype_path(ocpypl_id, "/group2/committed_dtypeB");
+ * H5Ocopy(...ocpypl_id...);
+ * ...
+ * ...
+ * }
+ * </pre>
+ *
+ * \note H5Pfree_merge_committed_dtype_paths() will fail if the
+ * object copy property list is invalid.
+ *
+ * \see
+ * \li H5Ocopy()
+ * \li #H5O_mcdt_search_cb_t
+ * \li H5Padd_merge_committed_dtype_path()
+ * \li H5Pfree_merge_committed_dtype_paths()
+ * \li H5Pget_mcdt_search_cb()
+ * \li H5Pset_copy_object()
+ * \li H5Pset_mcdt_search_cb()
+ *
+ * \since 1.8.9
+ *
+ */
H5_DLL herr_t H5Pfree_merge_committed_dtype_paths(hid_t plist_id);
-H5_DLL herr_t H5Pset_mcdt_search_cb(hid_t plist_id, H5O_mcdt_search_cb_t func, void *op_data);
+/**
+ * \ingroup OCPPL
+ *
+ * \brief Retrieves the properties to be used when an object is copied
+ *
+ * \param[in] plist_id Object copy property list identifier
+ * \param[out] copy_options Copy option(s) set in the object copy property
+ * list
+ *
+ * \return \herr_t
+ *
+ * \details H5Pget_copy_object() retrieves the properties currently
+ * specified in the object copy property list \p plist_id, which
+ * will be invoked when a new copy is made of an existing object.
+ *
+ * \p copy_options is a bit map indicating the flags, or
+ * properties, governing object copying that are set in the
+ * property list \p plist_id.
+ *
+ * The available flags are described in H5Pset_copy_object().
+ *
+ * \since 1.8.0
+ *
+ */
+H5_DLL herr_t H5Pget_copy_object(hid_t plist_id, unsigned *copy_options /*out*/);
+/**
+ * \ingroup OCPPL
+ *
+ * \brief Retrieves the callback function from the specified object copy
+ * property list
+ *
+ * \param[in] plist_id Object copy property list identifier
+ * \param[out] func User-defined callback function
+ * \param[out] op_data User-defined data for the callback
+ * function
+ *
+ * \return \herr_t
+ *
+ * \details H5Pget_mcdt_search_cb() retrieves the user-defined callback
+ * function and the user data that are set via
+ * H5Pset_mcdt_search_cb() in the object copy property list
+ * \p plist_id.
+ *
+ * The callback function will be returned in the parameter \p func
+ * and the user data will be returned in the parameter \p op_data.
+ *
+ * \note H5Pget_mcdt_search_cb() will fail if the object copy property
+ * list is invalid.
+ *
+ * \see
+ * \li H5Ocopy()
+ * \li #H5O_mcdt_search_cb_t
+ * \li H5Padd_merge_committed_dtype_path()
+ * \li H5Pfree_merge_committed_dtype_paths()
+ * \li H5Pget_mcdt_search_cb()
+ * \li H5Pset_copy_object()
+ * \li H5Pset_mcdt_search_cb()
+ *
+ * \todo Link to Copying Committed Datatypes with H5Ocopy was removed.
+ *
+ * \since 1.8.9
+ *
+ */
H5_DLL herr_t H5Pget_mcdt_search_cb(hid_t plist_id, H5O_mcdt_search_cb_t *func, void **op_data);
+/**
+ * \ingroup OCPPL
+ *
+ * \brief Sets properties to be used when an object is copied
+ *
+ * \param[in] plist_id Object copy property list identifier
+ * \param[out] copy_options Copy option(s) to be set
+ *
+ * \return \herr_t
+ *
+ * \details H5Pset_copy_object() sets properties in the object copy
+ * property list \p plist_id. When an existing object is copied,
+ * that property list will determine how the new copy is created.
+ *
+ * The following flags are available for use in an object copy
+ * property list:
+ *
+ * <table>
+ * <tr>
+ * <td>#H5O_COPY_SHALLOW_HIERARCHY_FLAG</td>
+ * <td>Copy only immediate members of a group<br />
+ * <em>Default behavior, without flag:</em> Recursively
+ * copy all objects in and below the group.</td>
+ * </tr>
+ * <tr>
+ * <td>#H5O_COPY_EXPAND_SOFT_LINK_FLAG</td>
+ * <td>Expand soft links into new objects<br />
+ * <em>Default behavior, without flag:</em> Copy soft
+ * links as they are.</td>
+ * </tr>
+ * <tr>
+ * <td>#H5O_COPY_EXPAND_EXT_LINK_FLAG</td>
+ * <td>Expand external link into new objects<br />
+ * <em>Default behavior, without flag:</em> Copy external
+ * links as they are.</td>
+ * </tr>
+ * <tr>
+ * <td>#H5O_COPY_EXPAND_REFERENCE_FLAG</td>
+ * <td>Copy objects that are pointed to by references and
+ * update reference values in destination file<br />
+ * <em>Default behavior, without flag:</em> Set reference
+ * values in destination file to zero (0)</td>
+ * </tr>
+ * <tr>
+ * <td>#H5O_COPY_WITHOUT_ATTR_FLAG</td>
+ * <td>Copy object without copying attributes<br />
+ * <em>Default behavior, without flag:</em> Copy object
+ * with all its attributes</td>
+ * </tr>
+ * <tr>
+ * <td>#H5O_COPY_MERGE_COMMITTED_DTYPE_FLAG</td>
+ * <td>Use a matching committed datatype in the destination
+ * file when copying a committed datatype, a dataset with
+ * a committed datatype, or an object with an attribute
+ * of committed datatype <br />
+ * <em>Default behavior without flag:</em>
+ *
+ * \li A committed datatype in the source will be copied to
+ * the destination as a committed datatype.
+ * \li If a dataset in the source uses a committed
+ * datatype or an object in the source has an attribute
+ * of a committed datatype, that committed datatype will
+ * be written to the destination as an anonymous
+ * committed datatype.
+ * If copied in a single H5Ocopy() operation, objects
+ * that share a committed datatype in the source will
+ * share an anonymous committed dataype in the
+ * destination copy. Subsequent H5Ocopy() operations,
+ * however, will be unaware of prior anonymous committed
+ * dataypes and will create new ones.
+ *
+ * See the “See Also” section immediately below for
+ * functions related to the use of this flag.</td>
+ * </tr>
+ * </table>
+ *
+ * \see
+ * Functions and a callback function used to tune committed datatype
+ * copying behavior:
+ * \li #H5O_mcdt_search_cb_t
+ * \li H5Padd_merge_committed_dtype_path()
+ * \li H5Pfree_merge_committed_dtype_paths()
+ * \li H5Pget_mcdt_search_cb()
+ * \li H5Pset_copy_object()
+ * \li H5Pset_mcdt_search_cb()
+ *
+ * \todo Link to Copying Committed Datatypes with H5Ocopy was removed.
+ * \version 1.8.9 #H5O_COPY_MERGE_COMMITTED_DTYPE_FLAG added in this release.
+ *
+ * \since 1.8.0
+ *
+ */
+H5_DLL herr_t H5Pset_copy_object(hid_t plist_id, unsigned copy_options);
+/**
+ * \ingroup OCPPL
+ *
+ * \brief Sets the callback function that H5Ocopy() will invoke before
+ * searching the entire destination file for a matching committed
+ * datatype
+ *
+ * \param[in] plist_id Object copy property list identifier
+ * \param[in] func User-defined callback function
+ * \param[in] op_data User-defined input data for the callback function
+ *
+ * \return \herr_t
+ *
+ * \details H5Pset_mcdt_search_cb() allows an application to set a
+ * callback function, \p func, that will be invoked before
+ * searching the destination file for a matching committed
+ * datatype. The default, global search process is described in
+ * H5Padd_merge_committed_dtype_path().
+ *
+ * The callback function must conform to the #H5O_mcdt_search_cb_t
+ * prototype and will return an instruction for one of the
+ * following actions:
+ *
+ * \li Continue the search for a matching committed datatype in
+ * the destination file.
+ * \li Discontinue the search for a matching committed datatype.
+ * H5Ocopy() will then apply the default behavior of creating
+ * an anonymous committed datatype.
+ * \li Abort the copy operation and exit H5Ocopy().
+ *
+ * \b Motivation: H5Pset_mcdt_search_cb() provides the means to
+ * define a callback function. An application can then use that
+ * callback to take an additional action before the default search
+ * of all committed datatypes in the destination file or to take an
+ * action that replaces the default search. This mechanism is
+ * intended to improve performance when the global search might
+ * take a long time.
+ *
+ * \b Example \b Usage: This example defines a callback function in
+ * the object copy property list.
+ *
+ * <pre>
+ * static H5O_mcdt_search_ret_t
+ * mcdt_search_cb(void *_udata)
+ * {
+ * H5O_mcdt_search_ret_t action = *((H5O_mcdt_search_ret_t *)_udata);
+ *
+ * return(action);
+ * }
+ *
+ * int main(void) {
+ * hid_t ocpypl_id = H5Pcreate(H5P_OBJECT_COPY);
+ *
+ * H5Pset_copy_object(ocpypl_id, H5O_COPY_MERGE_COMMITTED_DTYPE_FLAG);
+ * H5Padd_merge_committed_dtype_path(ocpypl_id, "/group/committed_dtypeA");
+ *
+ * action = H5O_MCDT_SEARCH_STOP;
+ * H5Pset_mcdt_search_cb(ocpypl_id, mcdt_search_cb, &action);
+ * H5Ocopy(...ocpypl_id...);
+ * ...
+ * ...
+ * }
+ * </pre>
+ *
+ * \note H5Pset_mcdt_search_cb() will fail if the
+ * object copy property list is invalid.
+ *
+ * \warning If the callback function return value causes H5Ocopy() to
+ * abort, the destination file may be left in an inconsistent or
+ * corrupted state.
+ *
+ * \see
+ * \li H5Ocopy()
+ * \li #H5O_mcdt_search_cb_t
+ * \li H5Padd_merge_committed_dtype_path()
+ * \li H5Pfree_merge_committed_dtype_paths()
+ * \li H5Pget_mcdt_search_cb()
+ * \li H5Pset_copy_object()
+ * \li H5Pset_mcdt_search_cb()
+ *
+ * \todo Link removed to "Copying Committed Datatypes with H5Ocopy" in Advanced Topics in HDF5
+ * \todo Programming Note for C++ Developers Using C Functions:
+ *
+ * \since 1.8.9
+ *
+ */
+H5_DLL herr_t H5Pset_mcdt_search_cb(hid_t plist_id, H5O_mcdt_search_cb_t func, void *op_data);
/* Symbols defined for compatibility with previous versions of the HDF5 API.
*