diff options
Diffstat (limited to 'src/H5Ddeprec.c')
| -rw-r--r-- | src/H5Ddeprec.c | 50 |
1 files changed, 47 insertions, 3 deletions
diff --git a/src/H5Ddeprec.c b/src/H5Ddeprec.c index b3dae7b..3da6b95 100644 --- a/src/H5Ddeprec.c +++ b/src/H5Ddeprec.c @@ -382,12 +382,56 @@ H5D__extend(H5D_t *dataset, const hsize_t *size, hid_t dxpl_id) /* Update the index values for the cached chunks for this dataset */ if(H5D_CHUNKED == dataset->shared->layout.type) { + hbool_t update_chunks = FALSE; /* Flag to indicate chunk cache update is needed */ + + /* Check if we need to track & update scaled dimension information */ + if(dataset->shared->ndims > 1) { + unsigned u; /* Local indicate variable */ + + /* Update scaled chunk information */ + for(u = 0; u < dataset->shared->ndims; u++) { + hsize_t scaled; /* Scaled value */ + + /* Compute the scaled dimension size value */ + scaled = size[u] / dataset->shared->layout.u.chunk.dim[u]; + + /* Check if scaled dimension size changed */ + if(scaled != dataset->shared->cache.chunk.scaled_dims[u]) { + hsize_t scaled_power2up; /* New size value, rounded to next power of 2 */ + + /* Update the scaled dimension size value for the current dimension */ + dataset->shared->cache.chunk.scaled_dims[u] = scaled; + + /* Check if algorithm for computing hash values will change */ + if((scaled > dataset->shared->cache.chunk.nslots && + dataset->shared->cache.chunk.scaled_dims[u] <= dataset->shared->cache.chunk.nslots) + || (scaled <= dataset->shared->cache.chunk.nslots && + dataset->shared->cache.chunk.scaled_dims[u] > dataset->shared->cache.chunk.nslots)) + update_chunks = TRUE; + + /* Check if the number of bits required to encode the scaled size value changed */ + if(dataset->shared->cache.chunk.scaled_power2up[u] != (scaled_power2up = H5VM_power2up(scaled))) { + /* Update the 'power2up' & 'encode_bits' values for the current dimension */ + dataset->shared->cache.chunk.scaled_power2up[u] = scaled_power2up; + dataset->shared->cache.chunk.scaled_encode_bits[u] = H5VM_log2_gen(scaled_power2up); + + /* Indicate that the chunk cache indices should be updated */ + update_chunks = TRUE; + } /* end if */ + } /* end if */ + } /* end for */ + } /* end if */ + /* Update general information for chunks */ if(H5D__chunk_set_info(dataset) < 0) HGOTO_ERROR(H5E_DATASET, H5E_CANTSET, FAIL, "unable to update # of chunks") - /* Update the chunk cache indices */ - if(H5D__chunk_update_cache(dataset, dxpl_id) < 0) - HGOTO_ERROR(H5E_DATASET, H5E_WRITEERROR, FAIL, "unable to update cached chunk indices") + + /* Check for updating chunk cache indices */ + if(update_chunks) { + /* Update the chunk cache indices */ + if(H5D__chunk_update_cache(dataset, dxpl_id) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_WRITEERROR, FAIL, "unable to update cached chunk indices") + } /* end if */ } /* end if */ /* Allocate space for the new parts of the dataset, if appropriate */ |