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[svn-r5427] Purpose:

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New Feature - per library change

Description:
    Added new member function DataSet::fillMemBuf for the new
    C API H5Dfill.  Quincey's description of H5Dfill is as followed:

    Added new H5Dfill() routine to fill the elements in a selection for a
    memory buffer with a fill value.  This is a user API wrapper around some
    internal routines which were needed for the fill-value modifications
    from Raymond as well as Pedro's code for reducing the size of a chunked
    dataset.

Platforms:
    SunOS 5.7 (arabica)
    Linux 6.2 (eirene)
This commit is contained in:
Binh-Minh Ribler 2002-05-16 09:03:53 -05:00
parent de3af15daf
commit 97a2a55cf4
2 changed files with 48 additions and 3 deletions
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41
c++/src/H5DataSet.cpp
View File

@ -180,6 +180,47 @@ void DataSet::extend( const hsize_t* size ) const
}
}
/*--------------------------------------------------------------------------
NAME
fillMemBuf
PURPOSE
Fills a selection in memory with a value
USAGE
fillMemBuf(fill, fill_type, buf, buf_type, space)
fillMemBuf(buf, buf_type, space)
void *buf; IN/OUT: Memory buffer to fill selection within
DataType& buf_type; IN: Datatype of the elements in buffer
DataSpace& space; IN: Dataspace describing memory buffer &
containing selection to use.
const void *fill; IN: Pointer to fill value to use - default NULL
DataType& fill_type; IN: Datatype of the fill value
DESCRIPTION
Use the selection in the dataspace to fill elements in a memory buffer.
COMMENTS, BUGS, ASSUMPTIONS
Second usage uses all zeros as fill value
--------------------------------------------------------------------------*/
void DataSet::fillMemBuf(const void *fill, DataType& fill_type, void *buf, DataType& buf_type, DataSpace& space)
{
hid_t fill_type_id = fill_type.getId();
hid_t buf_type_id = buf_type.getId();
hid_t space_id = space.getId();
herr_t ret_value = H5Dfill(fill, fill_type_id, buf, buf_type_id, space_id);
if( ret_value < 0 )
{
throw DataSetIException("DataSet::fillMemBuf", "H5Dfill failed");
}
}
void DataSet::fillMemBuf(void *buf, DataType& buf_type, DataSpace& space)
{
hid_t buf_type_id = buf_type.getId();
hid_t space_id = space.getId();
herr_t ret_value = H5Dfill(NULL, buf_type_id, buf, buf_type_id, space_id);
if( ret_value < 0 )
{
throw DataSetIException("DataSet::fillMemBuf", "H5Dfill failed");
}
}
// This private function calls the C API H5Dclose to close this dataset.
// Used by IdComponent::reset
void DataSet::p_close() const

10
c++/src/H5DataSet.h
View File

@ -39,10 +39,14 @@ class __DLLCPP__ DataSet : public AbstractDs {
// Extends the dataset with unlimited dimension.
void extend( const hsize_t* size ) const;
// Fills a selection in memory with a value
void fillMemBuf(const void *fill, DataType& fill_type, void *buf, DataType& buf_type, DataSpace& space);
// Fills a selection in memory with zero
void fillMemBuf(void *buf, DataType& buf_type, DataSpace& space);
// Creates a copy of an existing DataSet using its id
// (used only by template functions in FGtemplates.h
// to return a DataSet, will not be published; Note: should use
// friend template function)
// Note: used by CommonFG to return a DataSet; should be modified
// to use friend template function instead)
DataSet( const hid_t dataset_id );
// Used by the API to appropriately close a dataset