diff options
Diffstat (limited to 'src/H5Dio.c')
-rw-r--r-- | src/H5Dio.c | 159 |
1 files changed, 104 insertions, 55 deletions
diff --git a/src/H5Dio.c b/src/H5Dio.c index f5087da..572e6cf 100644 --- a/src/H5Dio.c +++ b/src/H5Dio.c @@ -5,12 +5,10 @@ * * * This file is part of HDF5. The full HDF5 copyright notice, including * * terms governing use, modification, and redistribution, is contained in * - * the files COPYING and Copyright.html. COPYING can be found at the root * - * of the source code distribution tree; Copyright.html can be found at the * - * root level of an installed copy of the electronic HDF5 document set and * - * is linked from the top-level documents page. It can also be found at * - * http://hdfgroup.org/HDF5/doc/Copyright.html. If you do not have * - * access to either file, you may request a copy from help@hdfgroup.org. * + * the COPYING file, which can be found at the root of the source code * + * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases. * + * If you do not have access to either file, you may request a copy from * + * help@hdfgroup.org. * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ /****************/ @@ -127,9 +125,13 @@ H5Dread(hid_t dset_id, hid_t mem_type_id, hid_t mem_space_id, hid_t file_space_id, hid_t plist_id, void *buf/*out*/) { H5D_t *dset = NULL; - const H5S_t *mem_space = NULL; - const H5S_t *file_space = NULL; - herr_t ret_value = SUCCEED; /* Return value */ + const H5S_t *mem_space = NULL; + const H5S_t *file_space = NULL; + H5P_genplist_t *plist; /* Property list pointer */ + hsize_t *direct_offset = NULL; + hbool_t direct_read = FALSE; + uint32_t direct_filters = 0; + herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_API(FAIL) H5TRACE6("e", "iiiiix", dset_id, mem_type_id, mem_space_id, file_space_id, @@ -137,28 +139,29 @@ H5Dread(hid_t dset_id, hid_t mem_type_id, hid_t mem_space_id, /* check arguments */ if(NULL == (dset = (H5D_t *)H5I_object_verify(dset_id, H5I_DATASET))) - HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataset") + HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataset") if(NULL == dset->oloc.file) - HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataset") + HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataset") if(mem_space_id < 0 || file_space_id < 0) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a data space") if(H5S_ALL != mem_space_id) { - if(NULL == (mem_space = (const H5S_t *)H5I_object_verify(mem_space_id, H5I_DATASPACE))) - HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a data space") + if(NULL == (mem_space = (const H5S_t *)H5I_object_verify(mem_space_id, H5I_DATASPACE))) + HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a data space") - /* Check for valid selection */ - if(H5S_SELECT_VALID(mem_space) != TRUE) - HGOTO_ERROR(H5E_DATASPACE, H5E_BADRANGE, FAIL, "selection+offset not within extent") + /* Check for valid selection */ + if(H5S_SELECT_VALID(mem_space) != TRUE) + HGOTO_ERROR(H5E_DATASPACE, H5E_BADRANGE, FAIL, "selection+offset not within extent") } /* end if */ + if(H5S_ALL != file_space_id) { - if(NULL == (file_space = (const H5S_t *)H5I_object_verify(file_space_id, H5I_DATASPACE))) - HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a data space") + if(NULL == (file_space = (const H5S_t *)H5I_object_verify(file_space_id, H5I_DATASPACE))) + HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a data space") - /* Check for valid selection */ - if(H5S_SELECT_VALID(file_space) != TRUE) - HGOTO_ERROR(H5E_DATASPACE, H5E_BADRANGE, FAIL, "selection+offset not within extent") + /* Check for valid selection */ + if(H5S_SELECT_VALID(file_space) != TRUE) + HGOTO_ERROR(H5E_DATASPACE, H5E_BADRANGE, FAIL, "selection+offset not within extent") } /* end if */ /* Get the default dataset transfer property list if the user didn't provide one */ @@ -168,9 +171,55 @@ H5Dread(hid_t dset_id, hid_t mem_type_id, hid_t mem_space_id, if(TRUE != H5P_isa_class(plist_id, H5P_DATASET_XFER)) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not xfer parms") - /* read raw data */ - if(H5D__read(dset, mem_type_id, mem_space, file_space, plist_id, buf/*out*/) < 0) - HGOTO_ERROR(H5E_DATASET, H5E_READERROR, FAIL, "can't read data") + /* Get the dataset transfer property list */ + if(NULL == (plist = (H5P_genplist_t *)H5I_object(plist_id))) + HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataset transfer property list") + + /* Retrieve the 'direct read' flag */ + if(H5P_get(plist, H5D_XFER_DIRECT_CHUNK_READ_FLAG_NAME, &direct_read) < 0) + HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "error getting flag for direct chunk read") + + if(direct_read) { + unsigned u; + hsize_t dims[H5O_LAYOUT_NDIMS]; + hsize_t internal_offset[H5O_LAYOUT_NDIMS]; + + if(H5D_CHUNKED != dset->shared->layout.type) + HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a chunked dataset") + + /* Get the direct chunk offset property */ + if(H5P_get(plist, H5D_XFER_DIRECT_CHUNK_READ_OFFSET_NAME, &direct_offset) < 0) + HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "error getting direct offset from xfer properties") + + /* The library's chunking code requires the offset terminates with a zero. So transfer the + * offset array to an internal offset array */ + for(u = 0; u < dset->shared->ndims; u++) { + /* Make sure the offset doesn't exceed the dataset's dimensions */ + if(direct_offset[u] > dset->shared->curr_dims[u]) + HGOTO_ERROR(H5E_DATASPACE, H5E_BADTYPE, FAIL, "offset exceeds dimensions of dataset") + + /* Make sure the offset fall right on a chunk's boundary */ + if(direct_offset[u] % dset->shared->layout.u.chunk.dim[u]) + HGOTO_ERROR(H5E_DATASPACE, H5E_BADTYPE, FAIL, "offset doesn't fall on chunks's boundary") + + internal_offset[u] = direct_offset[u]; + } /* end for */ + + /* Terminate the offset with a zero */ + internal_offset[dset->shared->ndims] = 0; + + /* Read the raw chunk */ + if(H5D__chunk_direct_read(dset, plist_id, internal_offset, &direct_filters, buf) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_READERROR, FAIL, "can't read chunk directly") + /* Set the chunk filter mask property */ + if(H5P_set(plist, H5D_XFER_DIRECT_CHUNK_READ_FILTERS_NAME, &direct_filters) < 0) + HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "error setting filter mask xfer property") + } + else { + /* read raw data */ + if(H5D__read(dset, mem_type_id, mem_space, file_space, plist_id, buf/*out*/) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_READERROR, FAIL, "can't read data") + } done: FUNC_LEAVE_API(ret_value) @@ -247,28 +296,28 @@ H5Dwrite(hid_t dset_id, hid_t mem_type_id, hid_t mem_space_id, /* Check dataspace selections if this is not a direct write */ if(!direct_write) { if(mem_space_id < 0 || file_space_id < 0) - HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataspace") - - if(H5S_ALL != mem_space_id) { - if(NULL == (mem_space = (const H5S_t *)H5I_object_verify(mem_space_id, H5I_DATASPACE))) - HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataspace") - - /* Check for valid selection */ - if(H5S_SELECT_VALID(mem_space) != TRUE) - HGOTO_ERROR(H5E_DATASPACE, H5E_BADRANGE, FAIL, "memory selection+offset not within extent") - } /* end if */ - if(H5S_ALL != file_space_id) { - if(NULL == (file_space = (const H5S_t *)H5I_object_verify(file_space_id, H5I_DATASPACE))) - HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataspace") - - /* Check for valid selection */ - if(H5S_SELECT_VALID(file_space) != TRUE) - HGOTO_ERROR(H5E_DATASPACE, H5E_BADRANGE, FAIL, "file selection+offset not within extent") - } /* end if */ + HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataspace") + + if(H5S_ALL != mem_space_id) { + if(NULL == (mem_space = (const H5S_t *)H5I_object_verify(mem_space_id, H5I_DATASPACE))) + HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataspace") + + /* Check for valid selection */ + if(H5S_SELECT_VALID(mem_space) != TRUE) + HGOTO_ERROR(H5E_DATASPACE, H5E_BADRANGE, FAIL, "memory selection+offset not within extent") + } /* end if */ + if(H5S_ALL != file_space_id) { + if(NULL == (file_space = (const H5S_t *)H5I_object_verify(file_space_id, H5I_DATASPACE))) + HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataspace") + + /* Check for valid selection */ + if(H5S_SELECT_VALID(file_space) != TRUE) + HGOTO_ERROR(H5E_DATASPACE, H5E_BADRANGE, FAIL, "file selection+offset not within extent") + } /* end if */ } if(H5D__pre_write(dset, direct_write, mem_type_id, mem_space, file_space, dxpl_id, buf) < 0) - HGOTO_ERROR(H5E_DATASET, H5E_WRITEERROR, FAIL, "can't prepare for writing data") + HGOTO_ERROR(H5E_DATASET, H5E_WRITEERROR, FAIL, "can't prepare for writing data") done: FUNC_LEAVE_API(ret_value) @@ -302,15 +351,15 @@ H5D__pre_write(H5D_t *dset, hbool_t direct_write, hid_t mem_type_id, uint32_t direct_filters; hsize_t *direct_offset; uint32_t direct_datasize; - hsize_t internal_offset[H5O_LAYOUT_NDIMS]; - unsigned u; /* Local index variable */ + hsize_t internal_offset[H5O_LAYOUT_NDIMS]; + unsigned u; /* Local index variable */ /* Get the dataset transfer property list */ if(NULL == (plist = (H5P_genplist_t *)H5I_object(dxpl_id))) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataset transfer property list") if(H5D_CHUNKED != dset->shared->layout.type) - HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a chunked dataset") + HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a chunked dataset") /* Retrieve parameters for direct chunk write */ if(H5P_get(plist, H5D_XFER_DIRECT_CHUNK_WRITE_FILTERS_NAME, &direct_filters) < 0) @@ -320,19 +369,19 @@ H5D__pre_write(H5D_t *dset, hbool_t direct_write, hid_t mem_type_id, if(H5P_get(plist, H5D_XFER_DIRECT_CHUNK_WRITE_DATASIZE_NAME, &direct_datasize) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "error getting data size for direct chunk write") - /* The library's chunking code requires the offset terminates with a zero. So transfer the + /* The library's chunking code requires the offset terminates with a zero. So transfer the * offset array to an internal offset array */ - for(u = 0; u < dset->shared->ndims; u++) { - /* Make sure the offset doesn't exceed the dataset's dimensions */ + for(u = 0; u < dset->shared->ndims; u++) { + /* Make sure the offset doesn't exceed the dataset's dimensions */ if(direct_offset[u] > dset->shared->curr_dims[u]) - HGOTO_ERROR(H5E_DATASPACE, H5E_BADTYPE, FAIL, "offset exceeds dimensions of dataset") + HGOTO_ERROR(H5E_DATASPACE, H5E_BADTYPE, FAIL, "offset exceeds dimensions of dataset") /* Make sure the offset fall right on a chunk's boundary */ - if(direct_offset[u] % dset->shared->layout.u.chunk.dim[u]) - HGOTO_ERROR(H5E_DATASPACE, H5E_BADTYPE, FAIL, "offset doesn't fall on chunks's boundary") + if(direct_offset[u] % dset->shared->layout.u.chunk.dim[u]) + HGOTO_ERROR(H5E_DATASPACE, H5E_BADTYPE, FAIL, "offset doesn't fall on chunks's boundary") - internal_offset[u] = direct_offset[u]; - } /* end for */ + internal_offset[u] = direct_offset[u]; + } /* end for */ /* Terminate the offset with a zero */ internal_offset[dset->shared->ndims] = 0; @@ -344,7 +393,7 @@ H5D__pre_write(H5D_t *dset, hbool_t direct_write, hid_t mem_type_id, else { /* Normal write */ /* write raw data */ if(H5D__write(dset, mem_type_id, mem_space, file_space, dxpl_id, buf) < 0) - HGOTO_ERROR(H5E_DATASET, H5E_WRITEERROR, FAIL, "can't write data") + HGOTO_ERROR(H5E_DATASET, H5E_WRITEERROR, FAIL, "can't write data") } /* end else */ done: |