diff options
Diffstat (limited to 'src/H5Dchunk.c')
| -rw-r--r-- | src/H5Dchunk.c | 137 |
1 files changed, 74 insertions, 63 deletions
diff --git a/src/H5Dchunk.c b/src/H5Dchunk.c index 9dcd0ec..f78b8cb 100644 --- a/src/H5Dchunk.c +++ b/src/H5Dchunk.c @@ -161,6 +161,13 @@ typedef struct H5D_chunk_it_ud4_t { unsigned ndims; /* Number of dimensions for chunk/dataset */ } H5D_chunk_it_ud4_t; +/* Callback info for nonexistent readvv operation */ +typedef struct H5D_chunk_readvv_ud_t { + unsigned char *rbuf; /* Read buffer to initialize */ + H5D_t *dset; /* Dataset to operate on */ + hid_t dxpl_id; /* DXPL for operation */ +} H5D_chunk_readvv_ud_t; + /********************/ /* Local Prototypes */ @@ -4922,6 +4929,55 @@ done: /*------------------------------------------------------------------------- + * Function: H5D_nonexistent_readvv_cb + * + * Purpose: Callback operation for performing fill value I/O operation + * on memory buffer. + * + * Note: This algorithm is pretty inefficient about initializing and + * terminating the fill buffer info structure and it would be + * faster to refactor this into a "real" initialization routine, + * and a "vectorized fill" routine. -QAK + * + * Return: Non-negative on success/Negative on failure + * + * Programmer: Quincey Koziol + * 30 Sep 2010 + * + *------------------------------------------------------------------------- + */ +static herr_t +H5D_nonexistent_readvv_cb(hsize_t UNUSED dst_off, hsize_t src_off, size_t len, + void *_udata) +{ + H5D_chunk_readvv_ud_t *udata = (H5D_chunk_readvv_ud_t *)_udata; /* User data for H5V_opvv() operator */ + H5D_fill_buf_info_t fb_info; /* Dataset's fill buffer info */ + hbool_t fb_info_init = FALSE; /* Whether the fill value buffer has been initialized */ + herr_t ret_value = SUCCEED; /* Return value */ + + FUNC_ENTER_NOAPI_NOINIT(H5D_nonexistent_readvv_cb) + + /* Initialize the fill value buffer */ + if(H5D_fill_init(&fb_info, (udata->rbuf + src_off), NULL, NULL, NULL, NULL, + &udata->dset->shared->dcpl_cache.fill, udata->dset->shared->type, + udata->dset->shared->type_id, (size_t)0, len, udata->dxpl_id) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "can't initialize fill buffer info") + fb_info_init = TRUE; + + /* Check for VL datatype & fill the buffer with VL datatype fill values */ + if(fb_info.has_vlen_fill_type && H5D_fill_refill_vl(&fb_info, fb_info.elmts_per_buf, udata->dxpl_id) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTCONVERT, FAIL, "can't refill fill value buffer") + +done: + /* Release the fill buffer info, if it's been initialized */ + if(fb_info_init && H5D_fill_term(&fb_info) < 0) + HDONE_ERROR(H5E_DATASET, H5E_CANTFREE, FAIL, "Can't release fill buffer info") + + FUNC_LEAVE_NOAPI(ret_value) +} /* H5D_nonexistent_readvv_cb() */ + + +/*------------------------------------------------------------------------- * Function: H5D_nonexistent_readvv * * Purpose: When the chunk doesn't exist on disk and the chunk is bigger @@ -4943,80 +4999,35 @@ done: */ static ssize_t H5D_nonexistent_readvv(const H5D_io_info_t *io_info, - size_t chunk_max_nseq, size_t *chunk_curr_seq, size_t chunk_len_arr[], hsize_t chunk_offset_arr[], - size_t mem_max_nseq, size_t *mem_curr_seq, size_t mem_len_arr[], hsize_t mem_offset_arr[]) + size_t chunk_max_nseq, size_t *chunk_curr_seq, size_t chunk_len_arr[], hsize_t chunk_off_arr[], + size_t mem_max_nseq, size_t *mem_curr_seq, size_t mem_len_arr[], hsize_t mem_off_arr[]) { - H5D_t *dset = io_info->dset; /* Local pointer to the dataset info */ - H5D_fill_buf_info_t fb_info; /* Dataset's fill buffer info */ - hbool_t fb_info_init = FALSE; /* Whether the fill value buffer has been initialized */ - size_t u, v; /* Local index variables */ - ssize_t ret_value = 0; /* Return value */ + H5D_chunk_readvv_ud_t udata; /* User data for H5V_opvv() operator */ + ssize_t ret_value; /* Return value */ FUNC_ENTER_NOAPI_NOINIT(H5D_nonexistent_readvv) /* Check args */ + HDassert(io_info); + HDassert(chunk_curr_seq); HDassert(chunk_len_arr); - HDassert(chunk_offset_arr); + HDassert(chunk_off_arr); + HDassert(mem_curr_seq); HDassert(mem_len_arr); - HDassert(mem_offset_arr); - - /* Work through all the sequences */ - for(u = *mem_curr_seq, v = *chunk_curr_seq; u < mem_max_nseq && v < chunk_max_nseq; ) { - unsigned char *buf; /* Temporary pointer into read buffer */ - size_t size; /* Size of sequence in bytes */ - - /* Choose smallest buffer to write */ - if(chunk_len_arr[v] < mem_len_arr[u]) - size = chunk_len_arr[v]; - else - size = mem_len_arr[u]; - - /* Compute offset in memory */ - buf = (unsigned char *)io_info->u.rbuf + mem_offset_arr[u]; + HDassert(mem_off_arr); - /* Initialize the fill value buffer */ - if(H5D_fill_init(&fb_info, buf, NULL, NULL, NULL, NULL, - &dset->shared->dcpl_cache.fill, dset->shared->type, - dset->shared->type_id, (size_t)0, size, io_info->dxpl_id) < 0) - HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "can't initialize fill buffer info") - fb_info_init = TRUE; - - /* Check for VL datatype & fill the buffer with VL datatype fill values */ - if(fb_info.has_vlen_fill_type && H5D_fill_refill_vl(&fb_info, fb_info.elmts_per_buf, io_info->dxpl_id) < 0) - HGOTO_ERROR(H5E_DATASET, H5E_CANTCONVERT, FAIL, "can't refill fill value buffer") + /* Set up user data for H5V_opvv() */ + udata.rbuf = (unsigned char *)io_info->u.rbuf; + udata.dset = io_info->dset; + udata.dxpl_id = io_info->dxpl_id; - /* Release the fill buffer info */ - if(H5D_fill_term(&fb_info) < 0) - HGOTO_ERROR(H5E_DATASET, H5E_CANTFREE, FAIL, "Can't release fill buffer info") - fb_info_init = FALSE; - - /* Update source information */ - chunk_len_arr[v] -= size; - if(chunk_len_arr[v] == 0) - v++; - else - chunk_offset_arr[v] += size; - - /* Update destination information */ - mem_len_arr[u] -= size; - if(mem_len_arr[u] == 0) - u++; - else - mem_offset_arr[u] += size; - - /* Increment number of bytes copied */ - ret_value += (ssize_t)size; - } /* end for */ - - /* Update current sequence vectors */ - *mem_curr_seq = u; - *chunk_curr_seq = v; + /* Call generic sequence operation routine */ + if((ret_value = H5V_opvv(chunk_max_nseq, chunk_curr_seq, chunk_len_arr, chunk_off_arr, + mem_max_nseq, mem_curr_seq, mem_len_arr, mem_off_arr, + H5D_nonexistent_readvv_cb, &udata)) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTOPERATE, FAIL, "can't perform vectorized fill value init") done: - /* Release the fill buffer info, if it's been initialized */ - if(fb_info_init && H5D_fill_term(&fb_info) < 0) - HDONE_ERROR(H5E_DATASET, H5E_CANTFREE, FAIL, "Can't release fill buffer info") - FUNC_LEAVE_NOAPI(ret_value) } /* H5D_nonexistent_readvv() */ |