diff options
Diffstat (limited to 'src/H5Dlayout.c')
| -rw-r--r-- | src/H5Dlayout.c | 140 |
1 files changed, 136 insertions, 4 deletions
diff --git a/src/H5Dlayout.c b/src/H5Dlayout.c index 7801632..c213140 100644 --- a/src/H5Dlayout.c +++ b/src/H5Dlayout.c @@ -96,8 +96,24 @@ H5D__layout_set_io_ops(const H5D_t *dataset) dataset->shared->layout.ops = H5D_LOPS_CHUNK; /* Set the chunk operations */ - /* (Only "B-tree" indexing type currently supported) */ - dataset->shared->layout.storage.u.chunk.ops = H5D_COPS_BTREE; + switch(dataset->shared->layout.u.chunk.idx_type) { + case H5D_CHUNK_IDX_BTREE: + dataset->shared->layout.storage.u.chunk.ops = H5D_COPS_BTREE; + break; + + case H5D_CHUNK_IDX_EARRAY: + dataset->shared->layout.storage.u.chunk.ops = H5D_COPS_EARRAY; + break; + + case H5D_CHUNK_IDX_BT2: + dataset->shared->layout.storage.u.chunk.ops = H5D_COPS_BT2; + break; + + case H5D_CHUNK_IDX_NTYPES: + default: + HDassert(0 && "Unknown chunk index method!"); + HGOTO_ERROR(H5E_DATASET, H5E_UNSUPPORTED, FAIL, "unknown chunk index method") + } /* end switch */ break; case H5D_COMPACT: @@ -190,8 +206,30 @@ H5D__layout_meta_size(const H5F_t *f, const H5O_layout_t *layout, hbool_t includ /* Dimension sizes */ ret_value += layout->u.chunk.ndims * layout->u.chunk.enc_bytes_per_dim; - /* B-tree address */ - ret_value += H5F_SIZEOF_ADDR(f); /* Address of data */ + /* Type of chunk index */ + ret_value++; + + switch(layout->u.chunk.idx_type) { + case H5D_CHUNK_IDX_BTREE: + HGOTO_ERROR(H5E_OHDR, H5E_BADVALUE, 0, "v1 B-tree index type found for layout message >v3") + + case H5D_CHUNK_IDX_EARRAY: + /* Extensible array creation parameters */ + ret_value += H5D_EARRAY_CREATE_PARAM_SIZE; + break; + + case H5D_CHUNK_IDX_BT2: + /* v2 B-tree creation parameters */ + ret_value += H5D_BT2_CREATE_PARAM_SIZE; + break; + + case H5D_CHUNK_IDX_NTYPES: + default: + HGOTO_ERROR(H5E_OHDR, H5E_CANTENCODE, 0, "Invalid chunk index type") + } /* end switch */ + + /* Chunk index address */ + ret_value += H5F_SIZEOF_ADDR(f); } /* end else */ break; @@ -241,12 +279,106 @@ H5D__layout_set_latest_version(H5O_layout_t *layout, const H5S_t *space, /* Set encoding of layout to latest version */ layout->version = H5O_LAYOUT_VERSION_LATEST; + /* Set the latest indexing type for the layout message */ + if(H5D__layout_set_latest_indexing(layout, space, dcpl_cache) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTSET, FAIL, "can't set latest indexing type") + done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5D__layout_set_latest_version() */ /*------------------------------------------------------------------------- + * Function: H5D__layout_set_latest_indexing + * + * Purpose: Set the latest indexing type for a layout message + * This is moved from H5D_layout_set_latest_version(). + * + * Return: Non-negative on success/Negative on failure + * + * Programmer: Quincey Koziol + * Thursday, January 15, 2009 + * + *------------------------------------------------------------------------- + */ +herr_t +H5D__layout_set_latest_indexing(H5O_layout_t *layout, const H5S_t *space, + const H5D_dcpl_cache_t *dcpl_cache) +{ + herr_t ret_value = SUCCEED; /* Return value */ + + FUNC_ENTER_PACKAGE + + /* Sanity check */ + HDassert(layout); + HDassert(space); + HDassert(dcpl_cache); + + /* The indexing methods only apply to chunked datasets (currently) */ + if(layout->type == H5D_CHUNKED) { + int sndims; /* Rank of dataspace */ + unsigned ndims; /* Rank of dataspace */ + + /* Query the dimensionality of the dataspace */ + if((sndims = H5S_GET_EXTENT_NDIMS(space)) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "invalid dataspace rank") + ndims = (unsigned)sndims; + + /* Avoid scalar/null dataspace */ + if(ndims > 0) { + hsize_t max_dims[H5O_LAYOUT_NDIMS]; /* Maximum dimension sizes */ + hsize_t cur_dims[H5O_LAYOUT_NDIMS]; /* Current dimension sizes */ + unsigned unlim_count = 0; /* Count of unlimited max. dimensions */ + unsigned u; /* Local index variable */ + + /* Query the dataspace's dimensions */ + if(H5S_get_simple_extent_dims(space, cur_dims, max_dims) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "can't get dataspace max. dimensions") + + /* Spin through the max. dimensions, looking for unlimited dimensions */ + for(u = 0; u < ndims; u++) + if(max_dims[u] == H5S_UNLIMITED) + unlim_count++; + + if(1 == unlim_count) { /* Chunked dataset with only 1 unlimited dimension */ + /* Set the chunk index type to an extensible array */ + layout->u.chunk.idx_type = H5D_CHUNK_IDX_EARRAY; + layout->storage.u.chunk.idx_type = H5D_CHUNK_IDX_EARRAY; + layout->storage.u.chunk.ops = H5D_COPS_EARRAY; + + /* Set the extensible array creation parameters */ + /* (use hard-coded defaults for now, until we give applications + * control over this with a property list - QAK) + */ + layout->u.chunk.u.earray.cparam.max_nelmts_bits = H5D_EARRAY_MAX_NELMTS_BITS; + layout->u.chunk.u.earray.cparam.idx_blk_elmts = H5D_EARRAY_IDX_BLK_ELMTS; + layout->u.chunk.u.earray.cparam.sup_blk_min_data_ptrs = H5D_EARRAY_SUP_BLK_MIN_DATA_PTRS; + layout->u.chunk.u.earray.cparam.data_blk_min_elmts = H5D_EARRAY_DATA_BLK_MIN_ELMTS; + layout->u.chunk.u.earray.cparam.max_dblk_page_nelmts_bits = H5D_EARRAY_MAX_DBLOCK_PAGE_NELMTS_BITS; + } /* end if */ + else { + /* Set the chunk index type to v2 B-tree */ + layout->u.chunk.idx_type = H5D_CHUNK_IDX_BT2; + layout->storage.u.chunk.idx_type = H5D_CHUNK_IDX_BT2; + layout->storage.u.chunk.ops = H5D_COPS_BT2; + + /* Set the v2 B-tree creation parameters */ + /* (use hard-coded defaults for now, until we give applications + * control over this with a property list - QAK) + */ + layout->u.chunk.u.btree2.cparam.node_size = H5D_BT2_NODE_SIZE; + layout->u.chunk.u.btree2.cparam.split_percent = H5D_BT2_SPLIT_PERC; + layout->u.chunk.u.btree2.cparam.merge_percent = H5D_BT2_MERGE_PERC; + } /* end else */ + } /* end if */ + } /* end if */ + +done: + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5D__layout_set_latest_indexing() */ + + +/*------------------------------------------------------------------------- * Function: H5D__layout_oh_create * * Purpose: Create layout/pline/efl information for dataset |