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HDF5
1.15.0.117d579
API Reference
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Functions | |
hid_t | H5Tvlen_create (hid_t base_id) |
Creates a new variable-length array datatype. More... | |
herr_t | H5Treclaim (hid_t type_id, hid_t space_id, hid_t plist_id, void *buf) |
Reclaims the variable length (VL) datatype memory buffers. More... | |
Reclaims the variable length (VL) datatype memory buffers.
[in] | type_id | Datatype identifier |
[in] | space_id | Dataspace identifier |
[in] | plist_id | Dataset transfer property list identifier used to create the buffer |
[in] | buf | Pointer to the buffer to be reclaimed |
H5Treclaim() reclaims memory buffers created to store VL datatypes. It only frees the variable length data in the selection defined in the dataspace specified by space_id
. The dataset transfer property list plist_id
is required to find the correct allocation and/or free methods for the variable-length data in the buffer.
Creates a new variable-length array datatype.
[in] | base_id | Datatype identifier, the element type of the datatype to create |
H5Tvlen_create() creates a new one-dimensional array datatype of variable-length (VL) with the base datatype base_id
.
This one-dimensional array often represents a data sequence of the base datatype, such as characters for character sequences or vertex coordinates for polygon lists. The base type specified for the VL datatype can be any HDF5 datatype, including another VL datatype, a compound datatype, or an atomic datatype.
When necessary, use H5Tget_super() to determine the base type of the VL datatype.
The datatype identifier returned from this function should be released with H5Tclose() or resource leaks will result. Under certain circumstances, H5Dvlen_reclaim() must also be used.