diff options
Diffstat (limited to 'src/H5D.c')
| -rw-r--r-- | src/H5D.c | 179 |
1 files changed, 163 insertions, 16 deletions
@@ -457,8 +457,8 @@ done: * * Failure: H5I_INVALID_HID * - * Programmer: Robb Matzke - * Tuesday, February 3, 1998 + * Programmer: Robb Matzke + * Tuesday, February 3, 1998 * *------------------------------------------------------------------------- */ @@ -512,8 +512,8 @@ done: * * Failure: H5I_INVALID_HID * - * Programmer: Neil Fortner - * Wednesday, October 29, 2008 + * Programmer: Neil Fortner + * Wednesday, October 29, 2008 * *------------------------------------------------------------------------- */ @@ -610,9 +610,9 @@ done: /*------------------------------------------------------------------------- - * Function: H5Diterate + * Function: H5Diterate * - * Purpose: This routine iterates over all the elements selected in a memory + * Purpose: This routine iterates over all the elements selected in a memory * buffer. The callback function is called once for each element selected * in the dataspace. The selection in the dataspace is modified so * that any elements already iterated over are removed from the selection @@ -659,11 +659,11 @@ done: * indicating failure. The iterator can be restarted at the next * element. * - * Return: Returns the return value of the last operator if it was non-zero, + * Return: Returns the return value of the last operator if it was non-zero, * or zero if all elements were processed. Otherwise returns a * negative value. * - * Programmer: Quincey Koziol + * Programmer: Quincey Koziol * Friday, June 11, 1999 * *------------------------------------------------------------------------- @@ -706,16 +706,16 @@ done: /*------------------------------------------------------------------------- - * Function: H5Dvlen_reclaim + * Function: H5Dvlen_reclaim * - * Purpose: Frees the buffers allocated for storing variable-length data + * Purpose: Frees the buffers allocated for storing variable-length data * in memory. Only frees the VL data in the selection defined in the * dataspace. The dataset transfer property list is required to find the * correct allocation/free methods for the VL data in the buffer. * - * Return: Non-negative on success, negative on failure + * Return: Non-negative on success, negative on failure * - * Programmer: Quincey Koziol + * Programmer: Quincey Koziol * Thursday, June 10, 1999 * *------------------------------------------------------------------------- @@ -756,9 +756,9 @@ done: /*------------------------------------------------------------------------- - * Function: H5Dvlen_get_buf_size + * Function: H5Dvlen_get_buf_size * - * Purpose: This routine checks the number of bytes required to store the VL + * Purpose: This routine checks the number of bytes required to store the VL * data from the dataset, using the space_id for the selection in the * dataset on disk and the type_id for the memory representation of the * VL data, in memory. The *size value is modified according to how many @@ -772,9 +772,9 @@ done: * Kinda kludgy, but easier than the other method of trying to figure out * the sizes without actually reading the data in... - QAK * - * Return: Non-negative on success, negative on failure + * Return: Non-negative on success, negative on failure * - * Programmer: Quincey Koziol + * Programmer: Quincey Koziol * Wednesday, August 11, 1999 * *------------------------------------------------------------------------- @@ -1095,3 +1095,150 @@ done: FUNC_LEAVE_API(ret_value); } /* H5Dget_chunk_storage_size() */ + +/*------------------------------------------------------------------------- + * Function: H5Dget_num_chunks + * + * Purpose: Retrieves the number of chunks that have non-empty intersection + * with a specified selection. + * + * Note: Currently, this function only gets the number of all written + * chunks, regardless the dataspace. + * + * Parameters: + * hid_t dset_id; IN: Chunked dataset ID + * hid_t fspace_id; IN: File dataspace ID + * hsize_t *nchunks; OUT: Number of non-empty chunks + * + * Return: Non-negative on success, negative on failure + * + * Programmer: Binh-Minh Ribler + * May 2019 (HDFFV-10677) + * + *------------------------------------------------------------------------- + */ +herr_t +H5Dget_num_chunks(hid_t dset_id, hid_t fspace_id, hsize_t *nchunks) +{ + H5VL_object_t *vol_obj = NULL; /* Dataset for this operation */ + herr_t ret_value = SUCCEED; + + FUNC_ENTER_API(FAIL) + H5TRACE3("e", "ii*h", dset_id, fspace_id, nchunks); + + /* Check arguments */ + if(NULL == (vol_obj = (H5VL_object_t *)H5I_object_verify(dset_id, H5I_DATASET))) + HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "invalid dataset identifier") + if(NULL == nchunks) + HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid argument (null)") + + /* Get the number of written chunks */ + if(H5VL_dataset_optional(vol_obj, H5P_DATASET_XFER_DEFAULT, H5_REQUEST_NULL, H5VL_NATIVE_DATASET_GET_NUM_CHUNKS, fspace_id, nchunks) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "Can't get number of chunks") + +done: + FUNC_LEAVE_API(ret_value); +} /* H5Dget_num_chunks() */ + + +/*------------------------------------------------------------------------- + * Function: H5Dget_chunk_info + * + * Purpose: Retrieves information about a chunk specified by its index. + * + * Parameters: + * hid_t dset_id; IN: Chunked dataset ID + * hid_t fspace_id; IN: File dataspace ID + * hsize_t index; IN: Index of written chunk + * hsize_t *offset OUT: Logical position of the chunk’s + * first element in the dataspace + * unsigned *filter_mask OUT: Mask for identifying the filters in use + * haddr_t *addr OUT: Address of the chunk + * hsize_t *size OUT: Size of the chunk + * + * Return: Non-negative on success, negative on failure + * + * Programmer: Binh-Minh Ribler + * May 2019 (HDFFV-10677) + * + *------------------------------------------------------------------------- + */ +herr_t +H5Dget_chunk_info(hid_t dset_id, hid_t fspace_id, hsize_t chk_index, hsize_t *offset, unsigned *filter_mask, haddr_t *addr, hsize_t *size) +{ + H5VL_object_t *vol_obj = NULL; /* Dataset for this operation */ + hsize_t nchunks= 0; + herr_t ret_value = SUCCEED; + + FUNC_ENTER_API(FAIL) + H5TRACE7("e", "iih*h*Iu*a*h", dset_id, fspace_id, chk_index, offset, + filter_mask, addr, size); + + /* Check arguments */ + if(NULL == offset && NULL == filter_mask && NULL == addr && NULL == size) + HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid arguments, must have at least one non-null output argument") + if(NULL == (vol_obj = (H5VL_object_t *)H5I_object_verify(dset_id, H5I_DATASET))) + HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "invalid dataset identifier") + + /* Get the number of written chunks to check range */ + if(H5VL_dataset_optional(vol_obj, H5P_DATASET_XFER_DEFAULT, H5_REQUEST_NULL, H5VL_NATIVE_DATASET_GET_NUM_CHUNKS, fspace_id, &nchunks) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "Can't get number of chunks") + + /* Check range for chunk index */ + if(chk_index >= nchunks) + HGOTO_ERROR(H5E_IO, H5E_BADRANGE, FAIL, "chunk index is out of range") + + /* Call private function to get the chunk info given the chunk's index */ + if(H5VL_dataset_optional(vol_obj, H5P_DATASET_XFER_DEFAULT, H5_REQUEST_NULL, H5VL_NATIVE_DATASET_GET_CHUNK_INFO_BY_IDX, fspace_id, chk_index, offset, filter_mask, addr, size) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "Can't get chunk info by index") + +done: + FUNC_LEAVE_API(ret_value); +} /* H5Dget_chunk_info() */ + + +/*------------------------------------------------------------------------- + * Function: H5Dget_chunk_info_by_coord + * + * Purpose: Retrieves information about a chunk specified by its logical + * coordinates. + * + * Parameters: + * hid_t dset_id; IN: Chunked dataset ID + * hsize_t *offset IN: Logical position of the chunk’s + * first element in the dataspace + * unsigned *filter_mask OUT: Mask for identifying the filters in use + * haddr_t *addr OUT: Address of the chunk + * hsize_t *size OUT: Size of the chunk + * + * Return: Non-negative on success, negative on failure + * + * Programmer: Binh-Minh Ribler + * May 2019 (HDFFV-10677) + * + *------------------------------------------------------------------------- + */ +herr_t +H5Dget_chunk_info_by_coord(hid_t dset_id, const hsize_t *offset, unsigned *filter_mask, haddr_t *addr, hsize_t *size) +{ + H5VL_object_t *vol_obj = NULL; /* Dataset for this operation */ + herr_t ret_value = SUCCEED; + + FUNC_ENTER_API(FAIL) + H5TRACE5("e", "i*h*Iu*a*h", dset_id, offset, filter_mask, addr, size); + + /* Check arguments */ + if(NULL == (vol_obj = (H5VL_object_t *)H5I_object_verify(dset_id, H5I_DATASET))) + HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "invalid dataset identifier") + if(NULL == filter_mask && NULL == addr && NULL == size) + HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid arguments, must have at least one non-null output argument") + if(NULL == offset) + HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid argument (null)") + + /* Call private function to get the chunk info given the chunk's index */ + if(H5VL_dataset_optional(vol_obj, H5P_DATASET_XFER_DEFAULT, H5_REQUEST_NULL, H5VL_NATIVE_DATASET_GET_CHUNK_INFO_BY_COOR, offset, filter_mask, addr, size) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "Can't get chunk info by its logical coordinates") + +done: + FUNC_LEAVE_API(ret_value) +} /* end H5Dget_chunk_info_by_coord() */ |