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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright by The HDF Group. *
* 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://hdfgroup.org/HDF5/doc/Copyright.html. If you do not have *
* access to either file, you may request a copy from help@hdfgroup.org. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*
* Programmer: Raymond Lu <slu@ncsa.uiuc.edu>
* August 5, 2002
*
* Purpose: Compact dataset I/O functions. These routines are similar
* H5D_contig_* and H5D_istore_*.
*/
#define H5D_PACKAGE /*suppress error about including H5Dpkg */
#include "H5private.h" /* Generic Functions */
#include "H5Dpkg.h" /* Dataset functions */
#include "H5Eprivate.h" /* Error handling */
#include "H5Fprivate.h" /* Files */
#include "H5FDprivate.h" /* File drivers */
#include "H5FLprivate.h" /* Free Lists */
#include "H5Iprivate.h" /* IDs */
#include "H5Oprivate.h" /* Object headers */
#include "H5Vprivate.h" /* Vector and array functions */
/* Declare a free list to manage blocks of type conversion data */
H5FL_BLK_EXTERN(type_conv);
/*-------------------------------------------------------------------------
* Function: H5D_compact_fill
*
* Purpose: Write fill values to a compactly stored dataset.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* May 6, 2007
*
*-------------------------------------------------------------------------
*/
herr_t
H5D_compact_fill(H5D_t *dset, hid_t dxpl_id)
{
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI(H5D_compact_fill, FAIL)
/* Check args */
HDassert(TRUE == H5P_isa_class(dxpl_id, H5P_DATASET_XFER));
HDassert(dset && H5D_COMPACT == dset->shared->layout.type);
HDassert(dset->shared->layout.u.compact.buf);
HDassert(dset->shared->type);
HDassert(dset->shared->space);
/* If the fill value is defined, initialize the data buffer with it */
if(dset->shared->fill.buf) {
hssize_t snpoints; /* Number of points in space (for error checking) */
size_t npoints; /* Number of points in space */
/* Get the number of elements in the dataset's dataspace */
snpoints = H5S_GET_EXTENT_NPOINTS(dset->shared->space);
HDassert(snpoints >= 0);
H5_ASSIGN_OVERFLOW(npoints, snpoints, hssize_t, size_t);
/* If necessary, convert fill value datatypes (which copies VL components, etc.) */
if(H5T_detect_class(dset->shared->type, H5T_VLEN) > 0) {
H5T_path_t *tpath; /* Datatype conversion path */
uint8_t *bkg_buf = NULL; /* Background conversion buffer */
H5T_t *mem_type; /* Pointer to memory datatype */
size_t mem_type_size, file_type_size; /* Size of datatype in memory and on disk */
hid_t mem_tid; /* Memory version of disk datatype */
/* Create temporary datatype for conversion operation */
if(NULL == (mem_type = H5T_copy(dset->shared->type, H5T_COPY_REOPEN)))
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTCOPY, FAIL, "unable to copy file datatype")
if((mem_tid = H5I_register(H5I_DATATYPE, mem_type)) < 0) {
H5T_close(mem_type);
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTREGISTER, FAIL, "unable to register memory datatype")
} /* end if */
/* Retrieve sizes of memory & file datatypes */
mem_type_size = H5T_get_size(mem_type);
HDassert(mem_type_size > 0);
file_type_size = H5T_get_size(dset->shared->type);
HDassert(file_type_size == dset->shared->fill.size);
/* Get the datatype conversion path for this operation */
if(NULL == (tpath = H5T_path_find(dset->shared->type, mem_type, NULL, NULL, dxpl_id))) {
H5I_dec_ref(mem_tid);
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "unable to convert between src and dst datatypes")
} /* end if */
/* Allocate a background buffer, if necessary */
if(H5T_path_bkg(tpath) && NULL == (bkg_buf = H5FL_BLK_CALLOC(type_conv, (npoints * MAX(mem_type_size, file_type_size))))) {
H5I_dec_ref(mem_tid);
HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed")
} /* end if */
/* Make a copy of the (disk-based) fill value into the compact buffer */
HDmemcpy(dset->shared->layout.u.compact.buf, dset->shared->fill.buf, file_type_size);
/* Type convert the compact dataset buffer, to copy any VL components */
if(H5T_convert(tpath, dset->shared->type_id, mem_tid, (size_t)1, (size_t)0, (size_t)0, dset->shared->layout.u.compact.buf, bkg_buf, dxpl_id) < 0) {
if(bkg_buf)
H5FL_BLK_FREE(type_conv, bkg_buf);
H5I_dec_ref(mem_tid);
HGOTO_ERROR(H5E_DATASET, H5E_CANTCONVERT, FAIL, "data type conversion failed")
} /* end if */
/* Replicate the fill value into the cached buffer */
H5V_array_fill(dset->shared->layout.u.compact.buf, dset->shared->layout.u.compact.buf, mem_type_size, npoints);
/* Get the inverse datatype conversion path for this operation */
if(NULL == (tpath = H5T_path_find(mem_type, dset->shared->type, NULL, NULL, dxpl_id))) {
if(bkg_buf)
H5FL_BLK_FREE(type_conv, bkg_buf);
H5I_dec_ref(mem_tid);
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "unable to convert between src and dst datatypes")
} /* end if */
/* Allocate or reset the background buffer, if necessary */
if(H5T_path_bkg(tpath)) {
if(bkg_buf)
HDmemset(bkg_buf, 0, MAX(mem_type_size, file_type_size));
else {
if(NULL == (bkg_buf = H5FL_BLK_CALLOC(type_conv, (npoints * MAX(mem_type_size, file_type_size))))) {
H5I_dec_ref(mem_tid);
HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed")
} /* end if */
} /* end else */
} /* end if */
/* Type convert the compact dataset buffer, to copy any VL components */
if(H5T_convert(tpath, mem_tid, dset->shared->type_id, npoints, (size_t)0, (size_t)0, dset->shared->layout.u.compact.buf, bkg_buf, dxpl_id) < 0) {
if(bkg_buf)
H5FL_BLK_FREE(type_conv, bkg_buf);
H5I_dec_ref(mem_tid);
HGOTO_ERROR(H5E_DATASET, H5E_CANTCONVERT, FAIL, "data type conversion failed")
} /* end if */
/* Release resources used */
if(bkg_buf)
H5FL_BLK_FREE(type_conv, bkg_buf);
H5I_dec_ref(mem_tid);
} /* end if */
else
/* Replicate the fill value into the cached buffer */
H5V_array_fill(dset->shared->layout.u.compact.buf, dset->shared->fill.buf, dset->shared->fill.size, npoints);
} /* end if */
else /* If the fill value is default, zero set data buf. */
HDmemset(dset->shared->layout.u.compact.buf, 0, dset->shared->layout.u.compact.size);
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5D_compact_fill() */
/*-------------------------------------------------------------------------
* Function: H5D_compact_readvv
*
* Purpose: Reads some data vectors from a dataset into a buffer.
* The data is in compact dataset. The address is relative
* to the beginning address of the dataset. The offsets and
* sequence lengths are in bytes.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* May 7, 2003
*
* Notes:
* Offsets in the sequences must be monotonically increasing
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
ssize_t
H5D_compact_readvv(const H5D_io_info_t *io_info,
size_t dset_max_nseq, size_t *dset_curr_seq, size_t dset_size_arr[], hsize_t dset_offset_arr[],
size_t mem_max_nseq, size_t *mem_curr_seq, size_t mem_size_arr[], hsize_t mem_offset_arr[],
void *buf)
{
ssize_t ret_value; /* Return value */
FUNC_ENTER_NOAPI(H5D_compact_readvv, FAIL)
assert(io_info->dset);
/* Use the vectorized memory copy routine to do actual work */
if((ret_value=H5V_memcpyvv(buf,mem_max_nseq,mem_curr_seq,mem_size_arr,mem_offset_arr,io_info->dset->shared->layout.u.compact.buf,dset_max_nseq,dset_curr_seq,dset_size_arr,dset_offset_arr))<0)
HGOTO_ERROR(H5E_IO, H5E_WRITEERROR, FAIL, "vectorized memcpy failed")
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5D_compact_readvv() */
/*-------------------------------------------------------------------------
* Function: H5D_compact_writevv
*
* Purpose: Writes some data vectors from a dataset into a buffer.
* The data is in compact dataset. The address is relative
* to the beginning address for the file. The offsets and
* sequence lengths are in bytes. This function only copies
* data into the buffer in the LAYOUT struct and mark it
* as DIRTY. Later in H5D_close, the data is copied into
* header message in memory.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* May 2, 2003
*
* Notes:
* Offsets in the sequences must be monotonically increasing
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
ssize_t
H5D_compact_writevv(const H5D_io_info_t *io_info,
size_t dset_max_nseq, size_t *dset_curr_seq, size_t dset_size_arr[], hsize_t dset_offset_arr[],
size_t mem_max_nseq, size_t *mem_curr_seq, size_t mem_size_arr[], hsize_t mem_offset_arr[],
const void *buf)
{
ssize_t ret_value; /* Return value */
FUNC_ENTER_NOAPI(H5D_compact_writevv, FAIL)
assert(io_info->dset);
/* Use the vectorized memory copy routine to do actual work */
if((ret_value=H5V_memcpyvv(io_info->dset->shared->layout.u.compact.buf,dset_max_nseq,dset_curr_seq,dset_size_arr,dset_offset_arr,buf,mem_max_nseq,mem_curr_seq,mem_size_arr,mem_offset_arr))<0)
HGOTO_ERROR(H5E_IO, H5E_WRITEERROR, FAIL, "vectorized memcpy failed")
io_info->dset->shared->layout.u.compact.dirty = TRUE;
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5D_compact_writevv() */
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