diff options
Diffstat (limited to 'src/H5D.c')
| -rw-r--r-- | src/H5D.c | 104 |
1 files changed, 102 insertions, 2 deletions
@@ -379,7 +379,7 @@ H5Dget_space(hid_t dset_id) done: FUNC_LEAVE_API(ret_value) -} +} /* end H5Dget_space() */ /*------------------------------------------------------------------------- @@ -415,7 +415,7 @@ H5Dget_space_status(hid_t dset_id, H5D_space_status_t *allocation) done: FUNC_LEAVE_API(ret_value) -} +} /* H5Dget_space_status() */ /*------------------------------------------------------------------------- @@ -955,3 +955,103 @@ done: FUNC_LEAVE_API(ret_value) } /* H5Dflush */ + +/*------------------------------------------------------------------------- + * Function: H5Dformat_convert (Internal) + * + * Purpose: For chunked: + * Convert the chunk indexing type to version 1 B-tree if not + * For compact/contiguous: + * Downgrade layout version to 3 if greater than 3 + * For virtual: no conversion + * + * Return: Non-negative on success, negative on failure + * + * Programmer: Vailin Choi + * Feb 2015 + * + *------------------------------------------------------------------------- + */ +herr_t +H5Dformat_convert(hid_t dset_id) +{ + H5D_t *dset; /* Dataset to refresh */ + herr_t ret_value = SUCCEED; /* return value */ + + FUNC_ENTER_API(FAIL) + H5TRACE1("e", "i", dset_id); + + /* Check args */ + if(NULL == (dset = (H5D_t *)H5I_object_verify(dset_id, H5I_DATASET))) + HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataset") + + switch(dset->shared->layout.type) { + case H5D_CHUNKED: + /* Convert the chunk indexing type to version 1 B-tree if not */ + if(dset->shared->layout.u.chunk.idx_type != H5D_CHUNK_IDX_BTREE) + if((H5D__format_convert(dset, H5AC_ind_read_dxpl_id)) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTLOAD, FAIL, "unable to downgrade chunk indexing type for dataset") + break; + + case H5D_CONTIGUOUS: + case H5D_COMPACT: + /* Downgrade the layout version to 3 if greater than 3 */ + if(dset->shared->layout.version > H5O_LAYOUT_VERSION_DEFAULT) + if((H5D__format_convert(dset, H5AC_ind_read_dxpl_id)) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTLOAD, FAIL, "unable to downgrade layout version for dataset") + break; + + case H5D_VIRTUAL: + /* Nothing to do even though layout is version 4 */ + break; + + case H5D_LAYOUT_ERROR: + case H5D_NLAYOUTS: + HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "invalid dataset layout type") + + default: + HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "unknown dataset layout type") + } /* end switch */ + +done: + FUNC_LEAVE_API(ret_value) +} /* H5Dformat_convert */ + + +/*------------------------------------------------------------------------- + * Function: H5Dget_chunk_index_type (Internal) + * + * Purpose: Retrieve a dataset's chunk indexing type + * + * Return: Non-negative on success, negative on failure + * + * Programmer: Vailin Choi + * Feb 2015 + * + *------------------------------------------------------------------------- + */ +herr_t +H5Dget_chunk_index_type(hid_t did, H5D_chunk_index_t *idx_type) +{ + H5D_t *dset; /* Dataset to refresh */ + herr_t ret_value = SUCCEED; /* return value */ + + FUNC_ENTER_API(FAIL) + H5TRACE2("e", "i*Dk", did, idx_type); + + /* Check args */ + if(NULL == (dset = (H5D_t *)H5I_object_verify(did, H5I_DATASET))) + HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataset") + + /* Should be a chunked dataset */ + if(dset->shared->layout.type != H5D_CHUNKED) + HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "dataset is not chunked") + + /* Get the chunk indexing type */ + if(idx_type) + *idx_type = dset->shared->layout.u.chunk.idx_type; + +done: + FUNC_LEAVE_API(ret_value) +} /* H5Dget_chunk_index_type() */ + |