diff options
Diffstat (limited to 'src/H5Dvirtual.c')
| -rw-r--r-- | src/H5Dvirtual.c | 2724 |
1 files changed, 2724 insertions, 0 deletions
diff --git a/src/H5Dvirtual.c b/src/H5Dvirtual.c new file mode 100644 index 0000000..316fcf7 --- /dev/null +++ b/src/H5Dvirtual.c @@ -0,0 +1,2724 @@ +/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * + * Copyright by The HDF Group. * + * All rights reserved. * + * * + * 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. * + * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ + +/* + * Programmer: Neil Fortner <nfortne2@hdfgroup.org> + * Wednesday, January 28, 2015 + * + * Purpose: + * Virtual Dataset (VDS) functions. Creates a layout type which allows + * definition of a virtual dataset, where the actual dataset is stored in + * other datasets (called source datasets). The mappings between the + * virtual and source datasets are specified by hyperslab or "all" + * dataspace selections. Point selections are not currently supported. + * Overlaps in the mappings in the virtual dataset result in undefined + * behaviour. + * + * Mapping selections may be unlimited, in which case the size of the + * virtual dataset is determined by the size of the source dataset(s). + * Names for the source datasets may also be generated procedurally, in + * which case the virtual selection should be unlimited with an unlimited + * count and the source selection should be limited with a size equal to + * that of the virtual selection with the unlimited count set to 1. + * + * Source datasets are opened lazily (only when needed for I/O or to + * determine the size of the virtual dataset), and are currently held open + * until the virtual dataset is closed. + */ + +/****************/ +/* Module Setup */ +/****************/ + +#include "H5Dmodule.h" /* This source code file is part of the H5D module */ + + +/***********/ +/* Headers */ +/***********/ +#include "H5private.h" /* Generic Functions */ +#include "H5Dpkg.h" /* Dataset functions */ +#include "H5Eprivate.h" /* Error handling */ +#include "H5Fprivate.h" /* Files */ +#include "H5FLprivate.h" /* Free Lists */ +#include "H5Gprivate.h" /* Groups */ +#include "H5HGprivate.h" /* Global Heaps */ +#include "H5Iprivate.h" /* IDs */ +#include "H5MMprivate.h" /* Memory management */ +#include "H5Oprivate.h" /* Object headers */ +#include "H5Sprivate.h" /* Dataspaces */ + + +/****************/ +/* Local Macros */ +/****************/ + +/* Default size for sub_dset array */ +#define H5D_VIRTUAL_DEF_SUB_DSET_SIZE 128 + + +/******************/ +/* Local Typedefs */ +/******************/ + + +/********************/ +/* Local Prototypes */ +/********************/ + +/* Layout operation callbacks */ +static herr_t H5D__virtual_read(H5D_io_info_t *io_info, const H5D_type_info_t + *type_info, hsize_t nelmts, const H5S_t *file_space, const H5S_t *mem_space, + H5D_chunk_map_t *fm); +static herr_t H5D__virtual_write(H5D_io_info_t *io_info, + const H5D_type_info_t *type_info, hsize_t nelmts, const H5S_t *file_space, + const H5S_t *mem_space, H5D_chunk_map_t *fm); +static herr_t H5D__virtual_flush(H5D_t *dset, hid_t dxpl_id); + +/* Other functions */ +static herr_t H5D__virtual_open_source_dset(const H5D_t *vdset, + H5O_storage_virtual_ent_t *virtual_ent, + H5O_storage_virtual_srcdset_t *source_dset, hid_t dxpl_id); +static herr_t H5D__virtual_reset_source_dset( + H5O_storage_virtual_ent_t *virtual_ent, + H5O_storage_virtual_srcdset_t *source_dset); +static herr_t H5D__virtual_str_append(const char *src, size_t src_len, char **p, + char **buf, size_t *buf_size); +static herr_t H5D__virtual_copy_parsed_name( + H5O_storage_virtual_name_seg_t **dst, H5O_storage_virtual_name_seg_t *src); +static herr_t H5D__virtual_build_source_name(char *source_name, + const H5O_storage_virtual_name_seg_t *parsed_name, size_t static_strlen, + size_t nsubs, hsize_t blockno, char **built_name); +static herr_t H5D__virtual_init_all(const H5D_t *dset, hid_t dxpl_id); +static herr_t H5D__virtual_pre_io(H5D_io_info_t *io_info, + H5O_storage_virtual_t *storage, const H5S_t *file_space, + const H5S_t *mem_space, hsize_t *tot_nelmts); +static herr_t H5D__virtual_post_io(H5O_storage_virtual_t *storage); +static herr_t H5D__virtual_read_one(H5D_io_info_t *io_info, + const H5D_type_info_t *type_info, const H5S_t *file_space, + H5O_storage_virtual_srcdset_t *source_dset); +static herr_t H5D__virtual_write_one(H5D_io_info_t *io_info, + const H5D_type_info_t *type_info, const H5S_t *file_space, + H5O_storage_virtual_srcdset_t *source_dset); + + +/*********************/ +/* Package Variables */ +/*********************/ + +/* Contiguous storage layout I/O ops */ +const H5D_layout_ops_t H5D_LOPS_VIRTUAL[1] = {{ + NULL, + H5D__virtual_init, + H5D__virtual_is_space_alloc, + NULL, + H5D__virtual_read, + H5D__virtual_write, +#ifdef H5_HAVE_PARALLEL + NULL, + NULL, +#endif /* H5_HAVE_PARALLEL */ + NULL, + NULL, + H5D__virtual_flush, + NULL +}}; + + +/*******************/ +/* Local Variables */ +/*******************/ + +/* Declare a free list to manage the H5O_storage_virtual_name_seg_t struct */ +H5FL_DEFINE(H5O_storage_virtual_name_seg_t); + + + +/*------------------------------------------------------------------------- + * Function: H5D_virtual_check_mapping_pre + * + * Purpose: Checks that the provided virtual and source selections are + * legal for use as a VDS mapping, prior to creating the rest + * of the mapping entry. + * + * Return: Non-negative on success/Negative on failure + * + * Programmer: Neil Fortner + * August 12, 2015 + * + *------------------------------------------------------------------------- + */ +herr_t +H5D_virtual_check_mapping_pre(const H5S_t *vspace, const H5S_t *src_space, + H5O_virtual_space_status_t space_status) +{ + H5S_sel_type select_type; /* Selection type */ + hsize_t nelmts_vs; /* Number of elements in virtual selection */ + hsize_t nelmts_ss; /* Number of elements in source selection */ + herr_t ret_value = SUCCEED; /* Return value */ + + FUNC_ENTER_NOAPI(FAIL) + + /* Check for point selections (currently unsupported) */ + if(H5S_SEL_ERROR == (select_type = H5S_GET_SELECT_TYPE(vspace))) + HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "can't get selection type") + if(select_type == H5S_SEL_POINTS) + HGOTO_ERROR(H5E_DATASET, H5E_UNSUPPORTED, FAIL, "point selections not currently supported with virtual datasets") + if(H5S_SEL_ERROR == (select_type = H5S_GET_SELECT_TYPE(src_space))) + HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "can't get selection type") + if(select_type == H5S_SEL_POINTS) + HGOTO_ERROR(H5E_DATASET, H5E_UNSUPPORTED, FAIL, "point selections not currently supported with virtual datasets") + + /* Get number of elements in spaces */ + nelmts_vs = (hsize_t)H5S_GET_SELECT_NPOINTS(vspace); + nelmts_ss = (hsize_t)H5S_GET_SELECT_NPOINTS(src_space); + + /* Check for unlimited vspace */ + if(nelmts_vs == H5S_UNLIMITED) { + /* Check for unlimited src_space */ + if(nelmts_ss == H5S_UNLIMITED) { + hsize_t nenu_vs; /* Number of elements in the non-unlimited dimensions of vspace */ + hsize_t nenu_ss; /* Number of elements in the non-unlimited dimensions of src_space */ + + /* Non-printf unlimited selection. Make sure both selections have + * the same number of elements in the non-unlimited dimension. Note + * we can always check this even if the space status is invalid + * because unlimited selections are never dependent on the extent. + */ + if(H5S_get_select_num_elem_non_unlim(vspace, &nenu_vs) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTCOUNT, FAIL, "can't get number of elements in non-unlimited dimension") + if(H5S_get_select_num_elem_non_unlim(src_space, &nenu_ss) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTCOUNT, FAIL, "can't get number of elements in non-unlimited dimension") + if(nenu_vs != nenu_ss) + HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "numbers of elemnts in the non-unlimited dimensions is different for source and virtual spaces") + } /* end if */ + /* We will handle the printf case after parsing the source names */ + } /* end if */ + else if(space_status != H5O_VIRTUAL_STATUS_INVALID) + /* Limited selections. Check number of points is the same. */ + if(nelmts_vs != nelmts_ss) + HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "virtual and source space selections have different numbers of elements") + +done: + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5D_virtual_check_mapping_pre() */ + + +/*------------------------------------------------------------------------- + * Function: H5D_virtual_check_mapping_post + * + * Purpose: Checks that the provided virtual dataset mapping entry is + * legal, after the mapping is otherwise complete. + * + * Return: Non-negative on success/Negative on failure + * + * Programmer: Neil Fortner + * August 12, 2015 + * + *------------------------------------------------------------------------- + */ +herr_t +H5D_virtual_check_mapping_post(const H5O_storage_virtual_ent_t *ent) +{ + hsize_t nelmts_vs; /* Number of elements in virtual selection */ + hsize_t nelmts_ss; /* Number of elements in source selection */ + H5S_t *tmp_space = NULL; /* Temporary dataspace */ + herr_t ret_value = SUCCEED; /* Return value */ + + FUNC_ENTER_NOAPI(FAIL) + + /* Get number of elements in spaces */ + nelmts_vs = (hsize_t)H5S_GET_SELECT_NPOINTS(ent->source_dset.virtual_select); + nelmts_ss = (hsize_t)H5S_GET_SELECT_NPOINTS(ent->source_select); + + /* Check for printf selection */ + if((nelmts_vs == H5S_UNLIMITED) && (nelmts_ss != H5S_UNLIMITED)) { + /* Make sure there at least one %b substitution in the source file or + * dataset name */ + if((ent->psfn_nsubs == 0) && (ent->psdn_nsubs == 0)) + HGOTO_ERROR(H5E_PLIST, H5E_BADVALUE, FAIL, "unlimited virtual selection, limited source selection, and no printf specifiers in source names") + + /* Make sure virtual space uses hyperslab selection */ + if(H5S_GET_SELECT_TYPE(ent->source_dset.virtual_select) != H5S_SEL_HYPERSLABS) + HGOTO_ERROR(H5E_PLIST, H5E_BADVALUE, FAIL, "virtual selection with printf mapping must be hyperslab") + + /* Check that the number of elements in one block in the virtual + * selection matches the total number of elements in the source + * selection, if the source space status is not invalid (virtual space + * status does not matter here because it is unlimited) */ + if(ent->source_space_status != H5O_VIRTUAL_STATUS_INVALID) { + /* Get first block in virtual selection */ + if(NULL == (tmp_space = H5S_hyper_get_unlim_block(ent->source_dset.virtual_select, (hsize_t)0))) + HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't get first block in virtual selection") + + /* Check number of points */ + nelmts_vs = (hsize_t)H5S_GET_SELECT_NPOINTS(tmp_space); + if(nelmts_vs != nelmts_ss) + HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "virtual (single block) and source space selections have different numbers of elements") + } /* end if */ + } /* end if */ + else + /* Make sure there are no printf substitutions */ + if((ent->psfn_nsubs > 0) || (ent->psdn_nsubs > 0)) + HGOTO_ERROR(H5E_PLIST, H5E_BADVALUE, FAIL, "printf specifier(s) in source name(s) without an unlimited virtual selection and limited source selection") + +done: + /* Free temporary space */ + if(tmp_space) + if(H5S_close(tmp_space) < 0) + HDONE_ERROR(H5E_PLIST, H5E_CLOSEERROR, FAIL, "can't close dataspace") + + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5D_virtual_check_mapping_post() */ + + +/*------------------------------------------------------------------------- + * Function: H5D_virtual_update_min_dims + * + * Purpose: Updates the virtual layout's "min_dims" field to take into + * account the "idx"th entry in the mapping list. The entry + * must be complete, though top level field list_nused (and + * of course min_dims) does not need to take it into account. + * + * Return: Non-negative on success/Negative on failure + * + * Programmer: Neil Fortner + * February 10, 2015 + * + *------------------------------------------------------------------------- + */ +herr_t +H5D_virtual_update_min_dims(H5O_layout_t *layout, size_t idx) +{ + H5S_sel_type sel_type; + int rank; + hsize_t bounds_start[H5S_MAX_RANK]; + hsize_t bounds_end[H5S_MAX_RANK]; + int i; + herr_t ret_value = SUCCEED; + + FUNC_ENTER_NOAPI(FAIL) + + HDassert(layout); + HDassert(layout->type == H5D_VIRTUAL); + HDassert(idx < layout->storage.u.virt.list_nalloc); + + /* Get type of selection */ + if(H5S_SEL_ERROR == (sel_type = H5S_GET_SELECT_TYPE(layout->storage.u.virt.list[idx].source_dset.virtual_select))) + HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "unable to get selection type") + + /* Do not update min_dims for "all" or "none" selections */ + if((sel_type == H5S_SEL_ALL) || (sel_type == H5S_SEL_NONE)) + HGOTO_DONE(SUCCEED) + + /* Get rank of vspace */ + if((rank = H5S_GET_EXTENT_NDIMS(layout->storage.u.virt.list[idx].source_dset.virtual_select)) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "unable to get number of dimensions") + + /* Get selection bounds */ + if(H5S_SELECT_BOUNDS(layout->storage.u.virt.list[idx].source_dset.virtual_select, bounds_start, bounds_end) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "unable to get selection bounds") + + /* Update min_dims */ + for(i = 0; i < rank; i++) + /* Don't check unlimited dimensions in the selection */ + if((i != layout->storage.u.virt.list[idx].unlim_dim_virtual) + && (bounds_end[i] >= layout->storage.u.virt.min_dims[i])) + layout->storage.u.virt.min_dims[i] = bounds_end[i] + (hsize_t)1; + +done: + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5D_virtual_update_min_dims() */ + + +/*------------------------------------------------------------------------- + * Function: H5D_virtual_check_min_dims + * + * Purpose: Checks if the dataset's dimensions are at least the + * calculated minimum dimensions from the mappings. + * + * Return: Non-negative on success/Negative on failure + * + * Programmer: Neil Fortner + * August 13, 2015 + * + *------------------------------------------------------------------------- + */ +herr_t +H5D_virtual_check_min_dims(const H5D_t *dset) +{ + int rank; + hsize_t dims[H5S_MAX_RANK]; + int i; + herr_t ret_value = SUCCEED; + + FUNC_ENTER_NOAPI(FAIL) + + HDassert(dset); + HDassert(dset->shared); + HDassert(dset->shared->layout.type == H5D_VIRTUAL); + + /* Get rank of dataspace */ + if((rank = H5S_GET_EXTENT_NDIMS(dset->shared->space)) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "unable to get number of dimensions") + + /* Get VDS dimensions */ + if(H5S_get_simple_extent_dims(dset->shared->space, dims, NULL) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "can't get VDS dimensions") + + /* Verify that dimensions are larger than min_dims */ + for(i = 0; i < rank; i++) + if(dims[i] < dset->shared->layout.storage.u.virt.min_dims[i]) + HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "virtual dataset dimensions not large enough to contain all limited dimensions in all selections") + +done: + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5D_virtual_check_min_dims() */ + + +/*------------------------------------------------------------------------- + * Function: H5D__virtual_copy_layout + * + * Purpose: Deep copies virtual storage layout message in memory. + * This function assumes that the top-level struct has + * already been copied (so the source struct retains + * ownership of the fields passed to this function). + * + * Return: Non-negative on success/Negative on failure + * + * Programmer: Neil Fortner + * February 10, 2015 + * + *------------------------------------------------------------------------- + */ +herr_t +H5D__virtual_copy_layout(H5O_layout_t *layout) +{ + H5O_storage_virtual_ent_t *orig_list = NULL; + hid_t orig_source_fapl; + hid_t orig_source_dapl; + H5P_genplist_t *plist; + size_t i; + herr_t ret_value = SUCCEED; + + FUNC_ENTER_PACKAGE + + HDassert(layout); + HDassert(layout->type == H5D_VIRTUAL); + + /* Save original entry list and top-level property lists and reset in layout + * so the originals aren't closed on error */ + orig_source_fapl = layout->storage.u.virt.source_fapl; + layout->storage.u.virt.source_fapl = -1; + orig_source_dapl = layout->storage.u.virt.source_dapl; + layout->storage.u.virt.source_dapl = -1; + orig_list = layout->storage.u.virt.list; + layout->storage.u.virt.list = NULL; + + /* Copy entry list */ + if(layout->storage.u.virt.list_nused > 0) { + HDassert(orig_list); + + /* Allocate memory for the list */ + if(NULL == (layout->storage.u.virt.list = (H5O_storage_virtual_ent_t *)H5MM_calloc(layout->storage.u.virt.list_nused * sizeof(H5O_storage_virtual_ent_t)))) + HGOTO_ERROR(H5E_DATASET, H5E_CANTALLOC, FAIL, "unable to allocate memory for virtual dataset entry list") + layout->storage.u.virt.list_nalloc = layout->storage.u.virt.list_nused; + + /* Copy the list entries, though set source_dset.dset and sub_dset to + * NULL */ + for(i = 0; i < layout->storage.u.virt.list_nused; i++) { + /* Copy virtual selection */ + if(NULL == (layout->storage.u.virt.list[i].source_dset.virtual_select + = H5S_copy(orig_list[i].source_dset.virtual_select, FALSE, TRUE))) + HGOTO_ERROR(H5E_DATASET, H5E_CANTCOPY, FAIL, "unable to copy virtual selection") + + /* Copy original source names */ + if(NULL == (layout->storage.u.virt.list[i].source_file_name + = HDstrdup(orig_list[i].source_file_name))) + HGOTO_ERROR(H5E_DATASET, H5E_RESOURCE, FAIL, "unable to duplicate source file name") + if(NULL == (layout->storage.u.virt.list[i].source_dset_name + = HDstrdup(orig_list[i].source_dset_name))) + HGOTO_ERROR(H5E_DATASET, H5E_RESOURCE, FAIL, "unable to duplicate source dataset name") + + /* Copy source selection */ + if(NULL == (layout->storage.u.virt.list[i].source_select + = H5S_copy(orig_list[i].source_select, FALSE, TRUE))) + HGOTO_ERROR(H5E_DATASET, H5E_CANTCOPY, FAIL, "unable to copy source selection") + + /* Initialize clipped selections */ + if(orig_list[i].unlim_dim_virtual < 0) { + layout->storage.u.virt.list[i].source_dset.clipped_source_select = layout->storage.u.virt.list[i].source_select; + layout->storage.u.virt.list[i].source_dset.clipped_virtual_select = layout->storage.u.virt.list[i].source_dset.virtual_select; + } /* end if */ + + /* Copy parsed names */ + if(H5D__virtual_copy_parsed_name(&layout->storage.u.virt.list[i].parsed_source_file_name, orig_list[i].parsed_source_file_name) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTCOPY, FAIL, "unable to copy parsed source file name") + layout->storage.u.virt.list[i].psfn_static_strlen = orig_list[i].psfn_static_strlen; + layout->storage.u.virt.list[i].psfn_nsubs = orig_list[i].psfn_nsubs; + if(H5D__virtual_copy_parsed_name(&layout->storage.u.virt.list[i].parsed_source_dset_name, orig_list[i].parsed_source_dset_name) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTCOPY, FAIL, "unable to copy parsed source dataset name") + layout->storage.u.virt.list[i].psdn_static_strlen = orig_list[i].psdn_static_strlen; + layout->storage.u.virt.list[i].psdn_nsubs = orig_list[i].psdn_nsubs; + + /* Copy source names in source dset or add reference as appropriate + */ + if(orig_list[i].source_dset.file_name) { + if(orig_list[i].source_dset.file_name + == orig_list[i].source_file_name) + layout->storage.u.virt.list[i].source_dset.file_name = layout->storage.u.virt.list[i].source_file_name; + else if(orig_list[i].parsed_source_file_name + && (orig_list[i].source_dset.file_name + != orig_list[i].parsed_source_file_name->name_segment)) { + HDassert(layout->storage.u.virt.list[i].parsed_source_file_name); + HDassert(layout->storage.u.virt.list[i].parsed_source_file_name->name_segment); + layout->storage.u.virt.list[i].source_dset.file_name = layout->storage.u.virt.list[i].parsed_source_file_name->name_segment; + } /* end if */ + else + if(NULL == (layout->storage.u.virt.list[i].source_dset.file_name + = HDstrdup(orig_list[i].source_dset.file_name))) + HGOTO_ERROR(H5E_DATASET, H5E_RESOURCE, FAIL, "unable to duplicate source file name") + } /* end if */ + if(orig_list[i].source_dset.dset_name) { + if(orig_list[i].source_dset.dset_name + == orig_list[i].source_dset_name) + layout->storage.u.virt.list[i].source_dset.dset_name = layout->storage.u.virt.list[i].source_dset_name; + else if(orig_list[i].parsed_source_dset_name + && (orig_list[i].source_dset.dset_name + != orig_list[i].parsed_source_dset_name->name_segment)) { + HDassert(layout->storage.u.virt.list[i].parsed_source_dset_name); + HDassert(layout->storage.u.virt.list[i].parsed_source_dset_name->name_segment); + layout->storage.u.virt.list[i].source_dset.dset_name = layout->storage.u.virt.list[i].parsed_source_dset_name->name_segment; + } /* end if */ + else + if(NULL == (layout->storage.u.virt.list[i].source_dset.dset_name + = HDstrdup(orig_list[i].source_dset.dset_name))) + HGOTO_ERROR(H5E_DATASET, H5E_RESOURCE, FAIL, "unable to duplicate source dataset name") + } /* end if */ + + /* Copy other fields in entry */ + layout->storage.u.virt.list[i].unlim_dim_source = orig_list[i].unlim_dim_source; + layout->storage.u.virt.list[i].unlim_dim_virtual = orig_list[i].unlim_dim_virtual; + layout->storage.u.virt.list[i].unlim_extent_source = orig_list[i].unlim_extent_source; + layout->storage.u.virt.list[i].unlim_extent_virtual = orig_list[i].unlim_extent_virtual; + layout->storage.u.virt.list[i].clip_size_source = orig_list[i].clip_size_source; + layout->storage.u.virt.list[i].clip_size_virtual = orig_list[i].clip_size_virtual; + layout->storage.u.virt.list[i].source_space_status = orig_list[i].source_space_status; + layout->storage.u.virt.list[i].virtual_space_status = orig_list[i].virtual_space_status; + } /* end for */ + } /* end if */ + else { + /* Zero out other fields related to list, just to be sure */ + layout->storage.u.virt.list = NULL; + layout->storage.u.virt.list_nalloc = 0; + } /* end else */ + + /* Copy property lists */ + if(orig_source_fapl >= 0) { + if(NULL == (plist = (H5P_genplist_t *)H5I_object_verify(orig_source_fapl, H5I_GENPROP_LST))) + HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a property list") + if((layout->storage.u.virt.source_fapl = H5P_copy_plist(plist, FALSE)) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTCOPY, FAIL, "can't copy fapl") + } /* end if */ + if(orig_source_dapl >= 0) { + if(NULL == (plist = (H5P_genplist_t *)H5I_object_verify(orig_source_dapl, H5I_GENPROP_LST))) + HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a property list") + if((layout->storage.u.virt.source_dapl = H5P_copy_plist(plist, FALSE)) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTCOPY, FAIL, "can't copy dapl") + } /* end if */ + + /* New layout is not fully initialized */ + layout->storage.u.virt.init = FALSE; + +done: + /* Release allocated resources on failure */ + if(ret_value < 0) + if(H5D__virtual_reset_layout(layout) < 0) + HDONE_ERROR(H5E_DATASET, H5E_CANTFREE, FAIL, "unable to reset virtual layout") + + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5D__virtual_copy_layout() */ + + +/*------------------------------------------------------------------------- + * Function: H5D__virtual_reset_layout + * + * Purpose: Frees internal structures in a virtual storage layout + * message in memory. This function is safe to use on + * incomplete structures (for recovery from failure) provided + * the internal structures are initialized with all bytes set + * to 0. + * + * Return: Non-negative on success/Negative on failure + * + * Programmer: Neil Fortner + * February 11, 2015 + * + *------------------------------------------------------------------------- + */ +herr_t +H5D__virtual_reset_layout(H5O_layout_t *layout) +{ + size_t i, j; + herr_t ret_value = SUCCEED; + + FUNC_ENTER_PACKAGE + + HDassert(layout); + HDassert(layout->type == H5D_VIRTUAL); + + /* Free the list entries. Note we always attempt to free everything even in + * the case of a failure. Because of this, and because we free the list + * afterwards, we do not need to zero out the memory in the list. */ + for(i = 0; i < layout->storage.u.virt.list_nused; i++) { + /* Free source_dset */ + if(H5D__virtual_reset_source_dset(&layout->storage.u.virt.list[i], &layout->storage.u.virt.list[i].source_dset) < 0) + HDONE_ERROR(H5E_DATASET, H5E_CANTFREE, FAIL, "unable to reset source dataset") + + /* Free original source names */ + (void)H5MM_xfree(layout->storage.u.virt.list[i].source_file_name); + (void)H5MM_xfree(layout->storage.u.virt.list[i].source_dset_name); + + /* Free sub_dset */ + for(j = 0; j < layout->storage.u.virt.list[i].sub_dset_nalloc; j++) + if(H5D__virtual_reset_source_dset(&layout->storage.u.virt.list[i], &layout->storage.u.virt.list[i].sub_dset[j]) < 0) + HDONE_ERROR(H5E_DATASET, H5E_CANTFREE, FAIL, "unable to reset source dataset") + layout->storage.u.virt.list[i].sub_dset = (H5O_storage_virtual_srcdset_t *)H5MM_xfree(layout->storage.u.virt.list[i].sub_dset); + + /* Free source_select */ + if(layout->storage.u.virt.list[i].source_select) + if(H5S_close(layout->storage.u.virt.list[i].source_select) < 0) + HDONE_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "unable to release source selection") + + /* Free parsed_source_file_name */ + H5D_virtual_free_parsed_name(layout->storage.u.virt.list[i].parsed_source_file_name); + + /* Free parsed_source_dset_name */ + H5D_virtual_free_parsed_name(layout->storage.u.virt.list[i].parsed_source_dset_name); + } /* end for */ + + /* Free the list */ + layout->storage.u.virt.list = (H5O_storage_virtual_ent_t *)H5MM_xfree(layout->storage.u.virt.list); + layout->storage.u.virt.list_nalloc = (size_t)0; + layout->storage.u.virt.list_nused = (size_t)0; + (void)HDmemset(layout->storage.u.virt.min_dims, 0, sizeof(layout->storage.u.virt.min_dims)); + + /* Close access property lists */ + if(layout->storage.u.virt.source_fapl >= 0) { + if(H5I_dec_ref(layout->storage.u.virt.source_fapl) < 0) + HDONE_ERROR(H5E_DATASET, H5E_CANTFREE, FAIL, "can't close source fapl") + layout->storage.u.virt.source_fapl = -1; + } /* end if */ + if(layout->storage.u.virt.source_dapl >= 0) { + if(H5I_dec_ref(layout->storage.u.virt.source_dapl) < 0) + HDONE_ERROR(H5E_DATASET, H5E_CANTFREE, FAIL, "can't close source dapl") + layout->storage.u.virt.source_dapl = -1; + } /* end if */ + + /* The list is no longer initialized */ + layout->storage.u.virt.init = FALSE; + + /* Note the lack of a done: label. This is because there are no HGOTO_ERROR + * calls. If one is added, a done: label must also be added */ + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5D__virtual_reset_layout() */ + + +/*------------------------------------------------------------------------- + * Function: H5D__virtual_copy + * + * Purpose: Copy virtual storage raw data from SRC file to DST file. + * + * Return: Non-negative on success/Negative on failure + * + * Programmer: Neil Fortner + * February 6, 2015 + * + *------------------------------------------------------------------------- + */ +herr_t +H5D__virtual_copy(H5F_t H5_ATTR_UNUSED *f_dst, H5O_layout_t *layout_dst, + hid_t H5_ATTR_UNUSED dxpl_id) +{ + herr_t ret_value = SUCCEED; + + FUNC_ENTER_PACKAGE + + /* Copy message in memory */ + if(H5D__virtual_copy_layout(layout_dst) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTCOPY, FAIL, "unable to copy virtual layout") + +#ifdef NOT_YET + /* Check for copy to the same file */ + if(f_dst == f_src) { + /* Increase reference count on global heap object */ + if((heap_rc = H5HG_link(f_dst, dxpl_id, (H5HG_t *)&(layout_dst->u.virt.serial_list_hobjid), 1)) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTMODIFY, FAIL, "unable to adjust global heap refence count") + } /* end if */ + else +#endif /* NOT_YET */ + { + /* Reset global heap id so a new heap object is created when the message + * is flushed */ + layout_dst->storage.u.virt.serial_list_hobjid.addr = HADDR_UNDEF; + layout_dst->storage.u.virt.serial_list_hobjid.idx = (size_t)0; + } /* end block/else */ + +done: + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5D__virtual_copy() */ + + +/*------------------------------------------------------------------------- + * Function: H5D__virtual_delete + * + * Purpose: Delete the file space for a virtual dataset + * + * Return: Non-negative on success/Negative on failure + * + * Programmer: Neil Fortner + * February 6, 2015 + * + *------------------------------------------------------------------------- + */ +herr_t +H5D__virtual_delete(H5F_t *f, hid_t dxpl_id, H5O_storage_t *storage) +{ +#ifdef NOT_YET + int heap_rc; /* Reference count of global heap object */ +#endif /* NOT_YET */ + herr_t ret_value = SUCCEED; /* Return value */ + + FUNC_ENTER_PACKAGE + + /* check args */ + HDassert(f); + HDassert(storage); + HDassert(storage->type == H5D_VIRTUAL); + + /* Check for global heap block */ + if(storage->u.virt.serial_list_hobjid.addr != HADDR_UNDEF) { +#ifdef NOT_YET + /* Unlink the global heap block */ + if((heap_rc = H5HG_link(f, dxpl_id, (H5HG_t *)&(storage->u.virt.serial_list_hobjid), -1)) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTMODIFY, FAIL, "unable to adjust global heap refence count") + if(heap_rc == 0) +#endif /* NOT_YET */ + /* Delete the global heap block */ + if(H5HG_remove(f, dxpl_id, (H5HG_t *)&(storage->u.virt.serial_list_hobjid)) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTREMOVE, FAIL, "unable to remove heap object") + } /* end if */ + + /* Clear global heap ID in storage */ + storage->u.virt.serial_list_hobjid.addr = HADDR_UNDEF; + storage->u.virt.serial_list_hobjid.idx = 0; + +done: + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5D__virtual_delete */ + + +/*------------------------------------------------------------------------- + * Function: H5D__virtual_open_source_dset + * + * Purpose: Attempts to open a source dataset. + * + * Return: Non-negative on success/Negative on failure + * + * Programmer: Neil Fortner + * March 6, 2015 + * + *------------------------------------------------------------------------- + */ +static herr_t +H5D__virtual_open_source_dset(const H5D_t *vdset, + H5O_storage_virtual_ent_t *virtual_ent, + H5O_storage_virtual_srcdset_t *source_dset, hid_t dxpl_id) +{ + H5F_t *src_file = NULL; /* Source file */ + hbool_t src_file_open = FALSE; /* Whether we have opened and need to close src_file */ + H5G_loc_t src_root_loc; /* Object location of source file root group */ + herr_t ret_value = SUCCEED; /* Return value */ + + FUNC_ENTER_STATIC + + /* Sanity check */ + HDassert(vdset); + HDassert(source_dset); + HDassert(!source_dset->dset); + HDassert(source_dset->file_name); + HDassert(source_dset->dset_name); + + /* Check if we need to open the source file */ + if(HDstrcmp(source_dset->file_name, ".")) { + /* Open the source file */ + if(NULL == (src_file = H5F_open(source_dset->file_name, H5F_INTENT(vdset->oloc.file) & H5F_ACC_RDWR, H5P_FILE_CREATE_DEFAULT, vdset->shared->layout.storage.u.virt.source_fapl, dxpl_id))) + H5E_clear_stack(NULL); /* Quick hack until proper support for H5Fopen with missing file is implemented */ + else + src_file_open = TRUE; + } /* end if */ + else + /* Source file is ".", use the virtual dataset's file */ + src_file = vdset->oloc.file; + + if(src_file) { + /* Set up the root group in the destination file */ + if(NULL == (src_root_loc.oloc = H5G_oloc(H5G_rootof(src_file)))) + HGOTO_ERROR(H5E_DATASET, H5E_BADVALUE, FAIL, "unable to get object location for root group") + if(NULL == (src_root_loc.path = H5G_nameof(H5G_rootof(src_file)))) + HGOTO_ERROR(H5E_DATASET, H5E_BADVALUE, FAIL, "unable to get path for root group") + + /* Open the source dataset */ + if(NULL == (source_dset->dset = H5D__open_name(&src_root_loc, source_dset->dset_name, vdset->shared->layout.storage.u.virt.source_dapl, dxpl_id))) { + H5E_clear_stack(NULL); /* Quick hack until proper support for H5Dopen with missing file is implemented */ + + /* Dataset does not exist */ + source_dset->dset_exists = FALSE; + } /* end if */ + else { + /* Dataset exists */ + source_dset->dset_exists = TRUE; + + /* Patch the source selection if necessary */ + if(virtual_ent->source_space_status != H5O_VIRTUAL_STATUS_CORRECT) { + if(H5S_extent_copy(virtual_ent->source_select, source_dset->dset->shared->space) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTCOPY, FAIL, "can't copy source dataspace extent") + virtual_ent->source_space_status = H5O_VIRTUAL_STATUS_CORRECT; + } /* end if */ + } /* end else */ + } /* end if */ + +done: + /* Close source file */ + if(src_file_open) + if(H5F_try_close(src_file) < 0) + HDONE_ERROR(H5E_DATASET, H5E_CANTCLOSEFILE, FAIL, "can't close source file") + + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5D__virtual_open_source_dset() */ + + +/*------------------------------------------------------------------------- + * Function: H5D__virtual_reset_source_dset + * + * Purpose: Frees space referenced by a source dataset struct. + * + * Return: Non-negative on success/Negative on failure + * + * Programmer: Neil Fortner + * May 20, 2015 + * + *------------------------------------------------------------------------- + */ +static herr_t +H5D__virtual_reset_source_dset(H5O_storage_virtual_ent_t *virtual_ent, + H5O_storage_virtual_srcdset_t *source_dset) +{ + herr_t ret_value = SUCCEED; /* Return value */ + + FUNC_ENTER_STATIC + + /* Sanity check */ + HDassert(source_dset); + + /* Free dataset */ + if(source_dset->dset) { + if(H5D_close(source_dset->dset) < 0) + HDONE_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "unable to close source dataset") + source_dset->dset = NULL; + } /* end if */ + + /* Free file name */ + if(virtual_ent->parsed_source_file_name + && (source_dset->file_name + != virtual_ent->parsed_source_file_name->name_segment)) + source_dset->file_name = (char *)H5MM_xfree(source_dset->file_name); + else + HDassert((source_dset->file_name == virtual_ent->source_file_name) + || (virtual_ent->parsed_source_file_name + && (source_dset->file_name + == virtual_ent->parsed_source_file_name->name_segment)) + || !source_dset->file_name); + + /* Free dataset name */ + if(virtual_ent->parsed_source_dset_name + && (source_dset->dset_name + != virtual_ent->parsed_source_dset_name->name_segment)) + source_dset->dset_name = (char *)H5MM_xfree(source_dset->dset_name); + else + HDassert((source_dset->dset_name == virtual_ent->source_dset_name) + || (virtual_ent->parsed_source_dset_name + && (source_dset->dset_name + == virtual_ent->parsed_source_dset_name->name_segment)) + || !source_dset->dset_name); + + /* Free clipped virtual selection */ + if(source_dset->clipped_virtual_select) { + if(source_dset->clipped_virtual_select != source_dset->virtual_select) + if(H5S_close(source_dset->clipped_virtual_select) < 0) + HDONE_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "unable to release clipped virtual selection") + source_dset->clipped_virtual_select = NULL; + } /* end if */ + + /* Free virtual selection */ + if(source_dset->virtual_select) { + if(H5S_close(source_dset->virtual_select) < 0) + HDONE_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "unable to release virtual selection") + source_dset->virtual_select = NULL; + } /* end if */ + + /* Free clipped source selection */ + if(source_dset->clipped_source_select) { + if(source_dset->clipped_source_select != virtual_ent->source_select) + if(H5S_close(source_dset->clipped_source_select) < 0) + HDONE_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "unable to release clipped source selection") + source_dset->clipped_source_select = NULL; + } /* end if */ + + /* The projected memory space should never exist when this function is + * called */ + HDassert(!source_dset->projected_mem_space); + + /* Note the lack of a done: label. This is because there are no HGOTO_ERROR + * calls. If one is added, a done: label must also be added */ + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5D__virtual_reset_source_dset() */ + + +/*------------------------------------------------------------------------- + * Function: H5D__virtual_str_append + * + * Purpose: Appends src_len bytes of the string src to the position *p + * in the buffer *buf (allocating *buf if necessary). + * + * Return: Non-negative on success/Negative on failure + * + * Programmer: Neil Fortner + * May 19, 2015 + * + *------------------------------------------------------------------------- + */ +static herr_t +H5D__virtual_str_append(const char *src, size_t src_len, char **p, char **buf, + size_t *buf_size) +{ + herr_t ret_value = SUCCEED; /* Return value */ + + FUNC_ENTER_STATIC + + /* Sanity check */ + HDassert(src); + HDassert(src_len > 0); + HDassert(p); + HDassert(buf); + HDassert(*p >= *buf); + HDassert(buf_size); + + /* Allocate or extend buffer if necessary */ + if(!*buf) { + HDassert(!*p); + HDassert(*buf_size == 0); + + /* Allocate buffer */ + if(NULL == (*buf = (char *)H5MM_malloc(src_len + (size_t)1))) + HGOTO_ERROR(H5E_RESOURCE, H5E_CANTALLOC, FAIL, "unable to allocate name segment struct") + *buf_size = src_len + (size_t)1; + *p = *buf; + } /* end if */ + else { + size_t p_offset = (size_t)(*p - *buf); /* Offset of p within buf */ + + /* Extend buffer if necessary */ + if((p_offset + src_len + (size_t)1) > *buf_size) { + char *tmp_buf; + size_t tmp_buf_size; + + /* Calculate new size of buffer */ + tmp_buf_size = MAX(p_offset + src_len + (size_t)1, + *buf_size * (size_t)2); + + /* Reallocate buffer */ + if(NULL == (tmp_buf = (char *)H5MM_realloc(*buf, tmp_buf_size))) + HGOTO_ERROR(H5E_RESOURCE, H5E_CANTALLOC, FAIL, "unable to reallocate name segment buffer") + *buf = tmp_buf; + *buf_size = tmp_buf_size; + *p = *buf + p_offset; + } /* end if */ + } /* end else */ + + /* Copy string to *p. Note that since src in not NULL terminated, we must + * use memcpy */ + (void)HDmemcpy(*p, src, src_len); + + /* Advance *p */ + *p += src_len; + + /* Add NULL terminator */ + **p = '\0'; + +done: + FUNC_LEAVE_NOAPI(ret_value); +} /* end H5D__virtual_str_append() */ + + +/*------------------------------------------------------------------------- + * Function: H5D_virtual_parse_source_name + * + * Purpose: Parses a source file or dataset name. + * + * Return: Non-negative on success/Negative on failure + * + * Programmer: Neil Fortner + * May 18, 2015 + * + *------------------------------------------------------------------------- + */ +herr_t +H5D_virtual_parse_source_name(const char *source_name, + H5O_storage_virtual_name_seg_t **parsed_name, size_t *static_strlen, + size_t *nsubs) +{ + H5O_storage_virtual_name_seg_t *tmp_parsed_name = NULL; + H5O_storage_virtual_name_seg_t **tmp_parsed_name_p = &tmp_parsed_name; + size_t tmp_static_strlen; + size_t tmp_strlen; + size_t tmp_nsubs = 0; + const char *p; + const char *pct; + char *name_seg_p = NULL; + size_t name_seg_size = 0; + herr_t ret_value = SUCCEED; /* Return value */ + + FUNC_ENTER_NOAPI(FAIL) + + /* Sanity check */ + HDassert(source_name); + HDassert(parsed_name); + HDassert(static_strlen); + HDassert(nsubs); + + /* Initialize p and tmp_static_strlen */ + p = source_name; + tmp_static_strlen = tmp_strlen = HDstrlen(source_name); + + /* Iterate over name */ + /* Note this will not work with UTF-8! We should support this eventually + * -NAF 5/18/2015 */ + while((pct = HDstrchr(p, '%'))) { + HDassert(pct >= p); + + /* Allocate name segment struct if necessary */ + if(!*tmp_parsed_name_p) + if(NULL == (*tmp_parsed_name_p = H5FL_CALLOC(H5O_storage_virtual_name_seg_t))) + HGOTO_ERROR(H5E_RESOURCE, H5E_CANTALLOC, FAIL, "unable to allocate name segment struct") + + /* Check for type of format specifier */ + if(pct[1] == 'b') { + /* Check for blank string before specifier */ + if(pct != p) + /* Append string to name segment */ + if(H5D__virtual_str_append(p, (size_t)(pct - p), &name_seg_p, &(*tmp_parsed_name_p)->name_segment, &name_seg_size) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTCOPY, FAIL, "unable to append name segment") + + /* Update other variables */ + tmp_parsed_name_p = &(*tmp_parsed_name_p)->next; + tmp_static_strlen -= 2; + tmp_nsubs++; + name_seg_p = NULL; + name_seg_size = 0; + } /* end if */ + else if(pct[1] == '%') { + /* Append string to name segment (include first '%') */ + if(H5D__virtual_str_append(p, (size_t)(pct - p) + (size_t)1, &name_seg_p, &(*tmp_parsed_name_p)->name_segment, &name_seg_size) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTCOPY, FAIL, "unable to append name segment") + + /* Update other variables */ + tmp_static_strlen -= 1; + } /* end else */ + else + HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid format specifier") + + p = pct + 2; + } /* end while */ + + /* Copy last segment of name, if any, unless the parsed name was not + * allocated */ + if(tmp_parsed_name) { + HDassert(p >= source_name); + if(*p == '\0') + HDassert((size_t)(p - source_name) == tmp_strlen); + else { + HDassert((size_t)(p - source_name) < tmp_strlen); + + /* Allocate name segment struct if necessary */ + if(!*tmp_parsed_name_p) + if(NULL == (*tmp_parsed_name_p = H5FL_CALLOC(H5O_storage_virtual_name_seg_t))) + HGOTO_ERROR(H5E_RESOURCE, H5E_CANTALLOC, FAIL, "unable to allocate name segment struct") + + /* Append string to name segment */ + if(H5D__virtual_str_append(p, tmp_strlen - (size_t)(p - source_name), &name_seg_p, &(*tmp_parsed_name_p)->name_segment, &name_seg_size) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTCOPY, FAIL, "unable to append name segment") + } /* end else */ + } /* end if */ + + /* Set return values */ + *parsed_name = tmp_parsed_name; + tmp_parsed_name = NULL; + *static_strlen = tmp_static_strlen; + *nsubs = tmp_nsubs; + +done: + if(tmp_parsed_name) { + HDassert(ret_value < 0); + H5D_virtual_free_parsed_name(tmp_parsed_name); + } /* end if */ + + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5D_virtual_parse_source_name() */ + + +/*------------------------------------------------------------------------- + * Function: H5D__virtual_copy_parsed_name + * + * Purpose: Deep copies a parsed source file or dataset name. + * + * Return: Non-negative on success/Negative on failure + * + * Programmer: Neil Fortner + * May 19, 2015 + * + *------------------------------------------------------------------------- + */ +static herr_t +H5D__virtual_copy_parsed_name(H5O_storage_virtual_name_seg_t **dst, + H5O_storage_virtual_name_seg_t *src) +{ + H5O_storage_virtual_name_seg_t *tmp_dst = NULL; + H5O_storage_virtual_name_seg_t *p_src = src; + H5O_storage_virtual_name_seg_t **p_dst = &tmp_dst; + herr_t ret_value = SUCCEED; + + FUNC_ENTER_STATIC + + /* Sanity check */ + HDassert(dst); + + /* Walk over parsed name, duplicating it */ + while(p_src) { + /* Allocate name segment struct */ + if(NULL == (*p_dst = H5FL_CALLOC(H5O_storage_virtual_name_seg_t))) + HGOTO_ERROR(H5E_RESOURCE, H5E_CANTALLOC, FAIL, "unable to allocate name segment struct") + + /* Duplicate name segment */ + if(p_src->name_segment) { + if(NULL == ((*p_dst)->name_segment = HDstrdup(p_src->name_segment))) + HGOTO_ERROR(H5E_RESOURCE, H5E_CANTALLOC, FAIL, "unable to duplicate name segment") + } /* end if */ + + /* Advance pointers */ + p_src = p_src->next; + p_dst = &(*p_dst)->next; + } /* end while */ + + /* Set dst */ + *dst = tmp_dst; + tmp_dst = NULL; + +done: + if(tmp_dst) { + HDassert(ret_value < 0); + H5D_virtual_free_parsed_name(tmp_dst); + } /* end if */ + + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5D__virtual_copy_parsed_name() */ + + +/*------------------------------------------------------------------------- + * Function: H5D_virtual_free_parsed_name + * + * Purpose: Frees the provided parsed name. + * + * Return: void + * + * Programmer: Neil Fortner + * May 19, 2015 + * + *------------------------------------------------------------------------- + */ +herr_t +H5D_virtual_free_parsed_name(H5O_storage_virtual_name_seg_t *name_seg) +{ + H5O_storage_virtual_name_seg_t *next_seg; + herr_t ret_value = SUCCEED; /* Return value */ + + FUNC_ENTER_NOAPI(FAIL) + + /* Walk name segments, freeing them */ + while(name_seg) { + (void)H5MM_xfree(name_seg->name_segment); + next_seg = name_seg->next; + (void)H5FL_FREE(H5O_storage_virtual_name_seg_t, name_seg); + name_seg = next_seg; + } /* end while */ + +done: + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5D_virtual_free_parsed_name() */ + + +/*------------------------------------------------------------------------- + * Function: H5D__virtual_build_source_name + * + * Purpose: Builds a source file or dataset name from a parsed name. + * + * Return: Non-negative on success/Negative on failure + * + * Programmer: Neil Fortner + * May 18, 2015 + * + *------------------------------------------------------------------------- + */ +static herr_t +H5D__virtual_build_source_name(char *source_name, + const H5O_storage_virtual_name_seg_t *parsed_name, size_t static_strlen, + size_t nsubs, hsize_t blockno, char **built_name) +{ + char *tmp_name = NULL; /* Name buffer */ + herr_t ret_value = SUCCEED; /* Return value */ + + FUNC_ENTER_STATIC + + /* Sanity check */ + HDassert(source_name); + HDassert(built_name); + + /* Check for static name */ + if(nsubs == 0) { + if(parsed_name) + *built_name = parsed_name->name_segment; + else + *built_name = source_name; + } /* end if */ + else { + const H5O_storage_virtual_name_seg_t *name_seg = parsed_name; + char *p; + hsize_t blockno_down = blockno; + size_t blockno_len = 1; + size_t name_len; + size_t name_len_rem; + size_t seg_len; + size_t nsubs_rem = nsubs; + + HDassert(parsed_name); + + /* Calculate length of printed block number */ + do { + blockno_down /= (hsize_t)10; + if(blockno_down == 0) + break; + blockno_len++; + } while(1); + + /* Calculate length of name buffer */ + name_len_rem = name_len = static_strlen + (nsubs * blockno_len) + (size_t)1; + + /* Allocate name buffer */ + if(NULL == (tmp_name = (char *)H5MM_malloc(name_len))) + HGOTO_ERROR(H5E_RESOURCE, H5E_CANTALLOC, FAIL, "unable to allocate name buffer") + p = tmp_name; + + /* Build name */ + do { + /* Add name segment */ + if(name_seg->name_segment) { + seg_len = HDstrlen(name_seg->name_segment); + HDassert(seg_len > 0); + HDassert(seg_len < name_len_rem); + HDstrncpy(p, name_seg->name_segment, name_len_rem); + name_len_rem -= seg_len; + p += seg_len; + } /* end if */ + + /* Add block number */ + if(nsubs_rem > 0) { + HDassert(blockno_len < name_len_rem); + if(HDsnprintf(p, name_len_rem, "%llu", (long long unsigned)blockno) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_WRITEERROR, FAIL, "unable to write block number to string") + name_len_rem -= blockno_len; + p += blockno_len; + nsubs_rem--; + } /* end if */ + + /* Advance name_seg */ + name_seg = name_seg->next; + } while(name_seg); + + /* Assign built_name */ + *built_name = tmp_name; + tmp_name = NULL; + } /* end else */ + +done: + if(tmp_name) { + HDassert(ret_value < 0); + H5MM_free(tmp_name); + } /* end if */ + + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5D__virtual_build_source_name() */ + + +/*------------------------------------------------------------------------- + * Function: H5D__virtual_set_extent_unlim + * + * Purpose: Sets the extent of the virtual dataset by checking the + * extents of source datasets where an unlimited selection + * matching. Dimensions that are not unlimited in any + * virtual mapping selections are not affected. + * + * Return: Non-negative on success/Negative on failure + * + * Programmer: Neil Fortner + * April 22, 2015 + * + *------------------------------------------------------------------------- + */ +herr_t +H5D__virtual_set_extent_unlim(const H5D_t *dset, hid_t dxpl_id) +{ + H5O_storage_virtual_t *storage; + hsize_t new_dims[H5S_MAX_RANK]; + hsize_t curr_dims[H5S_MAX_RANK]; + hsize_t clip_size; + int rank; + hbool_t changed = FALSE; /* Whether the VDS extent changed */ + size_t i, j; + herr_t ret_value = SUCCEED; /* Return value */ + + FUNC_ENTER_PACKAGE + + /* Sanity check */ + HDassert(dset); + HDassert(dset->shared->layout.storage.type == H5D_VIRTUAL); + storage = &dset->shared->layout.storage.u.virt; + HDassert((storage->view == H5D_VDS_FIRST_MISSING) || (storage->view == H5D_VDS_LAST_AVAILABLE)); + + /* Get rank of VDS */ + if((rank = H5S_GET_EXTENT_NDIMS(dset->shared->space)) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "unable to get number of dimensions") + + /* Initialize new_dims to HSIZE_UNDEF */ + for(i = 0; i < (size_t)rank; i++) + new_dims[i] = HSIZE_UNDEF; + + /* Iterate over mappings */ + for(i = 0; i < storage->list_nalloc; i++) + /* Check for unlimited dimension */ + if(storage->list[i].unlim_dim_virtual >= 0) { + /* Check for "printf" source dataset resolution */ + if(storage->list[i].unlim_dim_source >= 0 ) { + /* Non-printf mapping */ + /* Open source dataset */ + if(!storage->list[i].source_dset.dset) + if(H5D__virtual_open_source_dset(dset, &storage->list[i], &storage->list[i].source_dset, dxpl_id) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTOPENOBJ, FAIL, "unable to open source dataset") + + /* Check if source dataset is open */ + if(storage->list[i].source_dset.dset) { + /* Retrieve current source dataset extent and patch mapping + */ + if(H5S_extent_copy(storage->list[i].source_select, storage->list[i].source_dset.dset->shared->space) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTCOPY, FAIL, "can't copy source dataspace extent") + + /* Get source space dimenstions */ + if(H5S_get_simple_extent_dims(storage->list[i].source_select, curr_dims, NULL) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "can't get source space dimensions") + + /* Check if the source extent in the unlimited dimension + * changed since the last time the VDS extent/mapping + * was updated */ + if(curr_dims[storage->list[i].unlim_dim_source] + == storage->list[i].unlim_extent_source) + /* Use cached result for clip size */ + clip_size = storage->list[i].clip_size_virtual; + else { + /* Get size that virtual selection would be clipped to + * to match size of source selection within source + * extent */ + clip_size = H5S_hyper_get_clip_extent_match(storage->list[i].source_dset.virtual_select, storage->list[i].source_select, curr_dims[storage->list[i].unlim_dim_source], storage->view == H5D_VDS_FIRST_MISSING); + + /* If we are setting the extent by the last available + * data, clip virtual_select and source_select. Note + * that if we used the cached clip_size above or it + * happens to be the same, the virtual selection will + * already be clipped to the correct size. Likewise, + * if we used the cached clip_size the source selection + * will already be correct. */ + if(storage->view == H5D_VDS_LAST_AVAILABLE) { + if(clip_size != storage->list[i].clip_size_virtual) { + /* Close previous clipped virtual selection, if + * any */ + if(storage->list[i].source_dset.clipped_virtual_select) { + HDassert(storage->list[i].source_dset.clipped_virtual_select + != storage->list[i].source_dset.virtual_select); + if(H5S_close(storage->list[i].source_dset.clipped_virtual_select) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "unable to release clipped virtual dataspace") + } /* end if */ + + /* Copy virtual selection */ + if(NULL == (storage->list[i].source_dset.clipped_virtual_select = H5S_copy(storage->list[i].source_dset.virtual_select, FALSE, TRUE))) + HGOTO_ERROR(H5E_DATASET, H5E_CANTCOPY, FAIL, "unable to copy virtual selection") + + /* Clip virtual selection */ + if(H5S_hyper_clip_unlim(storage->list[i].source_dset.clipped_virtual_select, clip_size)) + HGOTO_ERROR(H5E_DATASET, H5E_CANTCLIP, FAIL, "failed to clip unlimited selection") + } /* end if */ + + /* Close previous clipped source selection, if any + */ + if(storage->list[i].source_dset.clipped_source_select) { + HDassert(storage->list[i].source_dset.clipped_source_select + != storage->list[i].source_select); + if(H5S_close(storage->list[i].source_dset.clipped_source_select) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "unable to release clipped source dataspace") + } /* end if */ + + /* Copy source selection */ + if(NULL == (storage->list[i].source_dset.clipped_source_select = H5S_copy(storage->list[i].source_select, FALSE, TRUE))) + HGOTO_ERROR(H5E_DATASET, H5E_CANTCOPY, FAIL, "unable to copy source selection") + + /* Clip source selection */ + if(H5S_hyper_clip_unlim(storage->list[i].source_dset.clipped_source_select, curr_dims[storage->list[i].unlim_dim_source])) + HGOTO_ERROR(H5E_DATASET, H5E_CANTCLIP, FAIL, "failed to clip unlimited selection") + } /* end if */ + + /* Update cached values unlim_extent_source and + * clip_size_virtual */ + storage->list[i].unlim_extent_source = curr_dims[storage->list[i].unlim_dim_source]; + storage->list[i].clip_size_virtual = clip_size; + } /* end else */ + } /* end if */ + else + clip_size = 0; + } /* end if */ + else { + /* printf mapping */ + hsize_t first_missing = 0; /* First missing dataset in the current block of missing datasets */ + + /* Search for source datasets */ + HDassert(storage->printf_gap != HSIZE_UNDEF); + for(j = 0; j <= (storage->printf_gap + first_missing); j++) { + /* Check for running out of space in sub_dset array */ + if(j >= (hsize_t)storage->list[i].sub_dset_nalloc) { + if(storage->list[i].sub_dset_nalloc == 0) { + /* Allocate sub_dset */ + if(NULL == (storage->list[i].sub_dset = (H5O_storage_virtual_srcdset_t *)H5MM_calloc(H5D_VIRTUAL_DEF_SUB_DSET_SIZE * sizeof(H5O_storage_virtual_srcdset_t)))) + HGOTO_ERROR(H5E_RESOURCE, H5E_CANTALLOC, FAIL, "unable to allocate sub dataset array") + storage->list[i].sub_dset_nalloc = H5D_VIRTUAL_DEF_SUB_DSET_SIZE; + } /* end if */ + else { + H5O_storage_virtual_srcdset_t *tmp_sub_dset; + + /* Extend sub_dset */ + if(NULL == (tmp_sub_dset = (H5O_storage_virtual_srcdset_t *)H5MM_realloc(storage->list[i].sub_dset, 2 * storage->list[i].sub_dset_nalloc * sizeof(H5O_storage_virtual_srcdset_t)))) + HGOTO_ERROR(H5E_RESOURCE, H5E_CANTALLOC, FAIL, "unable to extend sub dataset array") + storage->list[i].sub_dset = tmp_sub_dset; + + /* Clear new space in sub_dset */ + (void)HDmemset(&storage->list[i].sub_dset[storage->list[i].sub_dset_nalloc], 0, storage->list[i].sub_dset_nalloc * sizeof(H5O_storage_virtual_srcdset_t)); + + /* Update sub_dset_nalloc */ + storage->list[i].sub_dset_nalloc *= 2; + } /* end else */ + } /* end if */ + + /* Check if the dataset was already opened */ + if(storage->list[i].sub_dset[j].dset_exists) + first_missing = j + 1; + else { + /* Resolve file name */ + if(!storage->list[i].sub_dset[j].file_name) + if(H5D__virtual_build_source_name(storage->list[i].source_file_name, storage->list[i].parsed_source_file_name, storage->list[i].psfn_static_strlen, storage->list[i].psfn_nsubs, j, &storage->list[i].sub_dset[j].file_name) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "unable to build source file name") + + /* Resolve dset name */ + if(!storage->list[i].sub_dset[j].dset_name) + if(H5D__virtual_build_source_name(storage->list[i].source_dset_name, storage->list[i].parsed_source_dset_name, storage->list[i].psdn_static_strlen, storage->list[i].psdn_nsubs, j, &storage->list[i].sub_dset[j].dset_name) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "unable to build source dataset name") + + /* Resolve virtual selection for block */ + if(!storage->list[i].sub_dset[j].virtual_select) + if(NULL == (storage->list[i].sub_dset[j].virtual_select = H5S_hyper_get_unlim_block(storage->list[i].source_dset.virtual_select, j))) + HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "unable to get block in unlimited selection") + + /* Initialize clipped selections */ + if(!storage->list[i].sub_dset[j].clipped_source_select) + storage->list[i].sub_dset[j].clipped_source_select = storage->list[i].source_select; + if(!storage->list[i].sub_dset[j].clipped_virtual_select) + storage->list[i].sub_dset[j].clipped_virtual_select = storage->list[i].sub_dset[j].virtual_select; + + /* Open source dataset */ + if(H5D__virtual_open_source_dset(dset, &storage->list[i], &storage->list[i].sub_dset[j], dxpl_id) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTOPENOBJ, FAIL, "unable to open source dataset") + + if(storage->list[i].sub_dset[j].dset) { + /* Update first_missing */ + first_missing = j + 1; + + /* Close source dataset so we don't have huge + * numbers of datasets open */ + if(H5D_close(storage->list[i].sub_dset[j].dset) < 0) + HDONE_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "unable to close source dataset") + storage->list[i].sub_dset[j].dset = NULL; + } /* end if */ + } /* end else */ + } /* end for */ + + /* Check if the size changed */ + if((first_missing == (hsize_t)storage->list[i].sub_dset_nused) + && (storage->list[i].clip_size_virtual != HSIZE_UNDEF)) + /* Use cached clip_size */ + clip_size = storage->list[i].clip_size_virtual; + else { + /* Check for no datasets */ + if(first_missing == 0) + /* Set clip size to 0 */ + clip_size = (hsize_t)0; + else { + hsize_t bounds_start[H5S_MAX_RANK]; + hsize_t bounds_end[H5S_MAX_RANK]; + + /* Get clip size from selection */ + if(storage->view == H5D_VDS_LAST_AVAILABLE) { + /* Get bounds from last valid virtual selection */ + if(H5S_SELECT_BOUNDS(storage->list[i].sub_dset[first_missing - (hsize_t)1].virtual_select, bounds_start, bounds_end) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "unable to get selection bounds") + + /* Set clip_size to bounds_end in unlimited + * dimension */ + clip_size = bounds_end[storage->list[i].unlim_dim_virtual] + (hsize_t)1; + } /* end if */ + else { + /* Get bounds from first missing virtual selection + */ + if(H5S_SELECT_BOUNDS(storage->list[i].sub_dset[first_missing].virtual_select, bounds_start, bounds_end) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "unable to get selection bounds") + + /* Set clip_size to bounds_start in unlimited + * dimension */ + clip_size = bounds_start[storage->list[i].unlim_dim_virtual]; + } /* end else */ + } /* end else */ + + /* Set sub_dset_nused and clip_size_virtual */ + storage->list[i].sub_dset_nused = (size_t)first_missing; + storage->list[i].clip_size_virtual = clip_size; + } /* end else */ + } /* end else */ + + /* Update new_dims */ + if((new_dims[storage->list[i].unlim_dim_virtual] == HSIZE_UNDEF) + || (storage->view == H5D_VDS_FIRST_MISSING ? (clip_size < (hsize_t)new_dims[storage->list[i].unlim_dim_virtual]) + : (clip_size > (hsize_t)new_dims[storage->list[i].unlim_dim_virtual]))) + new_dims[storage->list[i].unlim_dim_virtual] = clip_size; + } /* end if */ + + /* Get current VDS dimensions */ + if(H5S_get_simple_extent_dims(dset->shared->space, curr_dims, NULL) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "can't get VDS dimensions") + + /* Calculate new extent */ + for(i = 0; i < (size_t)rank; i++) { + if(new_dims[i] == HSIZE_UNDEF) + new_dims[i] = curr_dims[i]; + else if(new_dims[i] < storage->min_dims[i]) + new_dims[i] = storage->min_dims[i]; + if(new_dims[i] != curr_dims[i]) + changed = TRUE; + } /* end for */ + + /* Update extent if it changed */ + if(changed) { + /* Update VDS extent */ + if(H5S_set_extent(dset->shared->space, new_dims) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to modify size of data space") + + /* Mark the space as dirty, for later writing to the file */ + if(H5F_INTENT(dset->oloc.file) & H5F_ACC_RDWR) + if(H5D__mark(dset, dxpl_id, H5D_MARK_SPACE) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTSET, FAIL, "unable to mark dataspace as dirty") + } /* end if */ + + /* If we did not change the VDS dimensions, there is nothing more to update + */ + if(changed || (!storage->init && (storage->view == H5D_VDS_FIRST_MISSING))) { + /* Iterate over mappings again to update source selections and virtual + * mapping extents */ + for(i = 0; i < storage->list_nalloc; i++) { + /* If there is an unlimited dimension, we are setting extent by the + * minimum of mappings, and the virtual extent in the unlimited + * dimension has changed since the last time the VDS extent/mapping + * was updated, we must adjust the selections */ + if((storage->list[i].unlim_dim_virtual >= 0) + && (storage->view == H5D_VDS_FIRST_MISSING) + && (new_dims[storage->list[i].unlim_dim_virtual] + != storage->list[i].unlim_extent_virtual)) { + /* Check for "printf" style mapping */ + if(storage->list[i].unlim_dim_source >= 0) { + /* Non-printf mapping */ + /* Close previous clipped virtual selection, if any */ + if(storage->list[i].source_dset.clipped_virtual_select) { + HDassert(storage->list[i].source_dset.clipped_virtual_select + != storage->list[i].source_dset.virtual_select); + if(H5S_close(storage->list[i].source_dset.clipped_virtual_select) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "unable to release clipped virtual dataspace") + } /* end if */ + + /* Copy virtual selection */ + if(NULL == (storage->list[i].source_dset.clipped_virtual_select = H5S_copy(storage->list[i].source_dset.virtual_select, FALSE, TRUE))) + HGOTO_ERROR(H5E_DATASET, H5E_CANTCOPY, FAIL, "unable to copy virtual selection") + + /* Clip space to virtual extent */ + if(H5S_hyper_clip_unlim(storage->list[i].source_dset.clipped_virtual_select, new_dims[storage->list[i].unlim_dim_source])) + HGOTO_ERROR(H5E_DATASET, H5E_CANTCLIP, FAIL, "failed to clip unlimited selection") + + /* Get size that source selection will be clipped to to + * match size of virtual selection */ + clip_size = H5S_hyper_get_clip_extent(storage->list[i].source_select, storage->list[i].source_dset.clipped_virtual_select, FALSE); + + /* Check if the clip size changed */ + if(clip_size != storage->list[i].clip_size_source) { + /* Close previous clipped source selection, if any */ + if(storage->list[i].source_dset.clipped_source_select) { + HDassert(storage->list[i].source_dset.clipped_source_select + != storage->list[i].source_select); + if(H5S_close(storage->list[i].source_dset.clipped_source_select) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "unable to release clipped source dataspace") + } /* end if */ + + /* Copy source selection */ + if(NULL == (storage->list[i].source_dset.clipped_source_select = H5S_copy(storage->list[i].source_select, FALSE, TRUE))) + HGOTO_ERROR(H5E_DATASET, H5E_CANTCOPY, FAIL, "unable to copy source selection") + + /* Clip source selection */ + if(H5S_hyper_clip_unlim(storage->list[i].source_dset.clipped_source_select, clip_size)) + HGOTO_ERROR(H5E_DATASET, H5E_CANTCLIP, FAIL, "failed to clip unlimited selection") + + /* Update cached value clip_size_source */ + storage->list[i].clip_size_source = clip_size; + } /* end if */ + } /* end if */ + else { + /* printf mapping */ + hsize_t first_inc_block; + hbool_t partial_block; + + /* Get index of first incomplete block in virtual + * selection */ + first_inc_block = H5S_hyper_get_first_inc_block(storage->list[i].source_dset.virtual_select, new_dims[storage->list[i].unlim_dim_virtual], &partial_block); + + /* Iterate over sub datasets */ + for(j = 0; j < storage->list[i].sub_dset_nalloc; j++) { + /* Close previous clipped source selection, if any */ + if(storage->list[i].sub_dset[j].clipped_source_select + != storage->list[i].source_select) { + if(storage->list[i].sub_dset[j].clipped_source_select) + if(H5S_close(storage->list[i].sub_dset[j].clipped_source_select) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "unable to release clipped source dataspace") + + /* Initialize clipped source selection to point to + * base source selection */ + storage->list[i].sub_dset[j].clipped_source_select = storage->list[i].source_select; + } /* end if */ + + /* Close previous clipped virtual selection, if any */ + if(storage->list[i].sub_dset[j].clipped_virtual_select + != storage->list[i].sub_dset[j].virtual_select) { + if(storage->list[i].sub_dset[j].clipped_virtual_select) + if(H5S_close(storage->list[i].sub_dset[j].clipped_virtual_select) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "unable to release clipped virtual dataspace") + + /* Initialize clipped virtual selection to point to + * unclipped virtual selection */ + storage->list[i].sub_dset[j].clipped_virtual_select = storage->list[i].sub_dset[j].virtual_select; + } /* end if */ + + /* Only initialize clipped selections if it is a + * complete block, for incomplete blocks defer to + * H5D__virtual_pre_io() as we may not have a valid + * source extent here. For unused blocks we will never + * need clipped selections (until the extent is + * recalculated in this function). */ + if(j >= (size_t)first_inc_block) { + /* Clear clipped source and virtual selections */ + storage->list[i].sub_dset[j].clipped_source_select = NULL; + storage->list[i].sub_dset[j].clipped_virtual_select = NULL; + } /* end if */ + } /* end for */ + } /* end else */ + + /* Update cached value unlim_extent_virtual */ + storage->list[i].unlim_extent_virtual = new_dims[storage->list[i].unlim_dim_virtual]; + } /* end if */ + + /* Update top level virtual_select and clipped_virtual_select + * extents */ + if(H5S_set_extent(storage->list[i].source_dset.virtual_select, new_dims) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to modify size of data space") + if((storage->list[i].source_dset.clipped_virtual_select + != storage->list[i].source_dset.virtual_select) + && storage->list[i].source_dset.clipped_virtual_select) + if(H5S_set_extent(storage->list[i].source_dset.clipped_virtual_select, new_dims) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to modify size of data space") + + /* Update sub dataset virtual_select and clipped_virtual_select + * extents */ + for(j = 0; j < storage->list[i].sub_dset_nalloc; j++) + if(storage->list[i].sub_dset[j].virtual_select) { + if(H5S_set_extent(storage->list[i].sub_dset[j].virtual_select, new_dims) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to modify size of data space") + if((storage->list[i].sub_dset[j].clipped_virtual_select + != storage->list[i].sub_dset[j].virtual_select) + && storage->list[i].sub_dset[j].clipped_virtual_select) + if(H5S_set_extent(storage->list[i].sub_dset[j].clipped_virtual_select, new_dims) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to modify size of data space") + } /* end if */ + else + HDassert(!storage->list[i].sub_dset[j].clipped_virtual_select); + } /* end for */ + } /* end if */ + + /* Mark layout as fully initialized */ + storage->init = TRUE; + +done: + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5D__virtual_set_extent_unlim() */ + + +/*------------------------------------------------------------------------- + * Function: H5D__virtual_init_all + * + * Purpose: Finishes initializing layout in preparation for I/O. + * Only necessary if H5D__virtual_set_extent_unlim() has not + * been called yet. Initializes clipped_virtual_select and + * clipped_source_select for all mappings in this layout. + * + * Return: Non-negative on success/Negative on failure + * + * Programmer: Neil Fortner + * August 10, 2015 + * + *------------------------------------------------------------------------- + */ +static herr_t +H5D__virtual_init_all(const H5D_t *dset, hid_t dxpl_id) +{ + H5O_storage_virtual_t *storage; + hsize_t virtual_dims[H5S_MAX_RANK]; + hsize_t source_dims[H5S_MAX_RANK]; + hsize_t clip_size; + size_t i, j; + herr_t ret_value = SUCCEED; /* Return value */ + + FUNC_ENTER_STATIC + + /* Sanity check */ + HDassert(dset); + HDassert(dset->shared->layout.storage.type == H5D_VIRTUAL); + storage = &dset->shared->layout.storage.u.virt; + HDassert((storage->view == H5D_VDS_FIRST_MISSING) || (storage->view == H5D_VDS_LAST_AVAILABLE)); + + /* Get current VDS dimensions */ + if(H5S_get_simple_extent_dims(dset->shared->space, virtual_dims, NULL) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "can't get VDS dimensions") + + /* Iterate over mappings */ + for(i = 0; i < storage->list_nalloc; i++) + /* Check for unlimited dimension */ + if(storage->list[i].unlim_dim_virtual >= 0) { + /* Check for "printf" source dataset resolution */ + if(storage->list[i].unlim_dim_source >= 0 ) { + /* Non-printf mapping */ + /* Open source dataset */ + if(!storage->list[i].source_dset.dset) + if(H5D__virtual_open_source_dset(dset, &storage->list[i], &storage->list[i].source_dset, dxpl_id) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTOPENOBJ, FAIL, "unable to open source dataset") + + /* Check if source dataset is open */ + if(storage->list[i].source_dset.dset) { + /* Retrieve current source dataset extent and patch mapping + */ + if(H5S_extent_copy(storage->list[i].source_select, storage->list[i].source_dset.dset->shared->space) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTCOPY, FAIL, "can't copy source dataspace extent") + + /* Get source space dimenstions */ + if(H5S_get_simple_extent_dims(storage->list[i].source_select, source_dims, NULL) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "can't get source space dimensions") + + /* Get size that source selection would be clipped to to + * match size of virtual selection */ + clip_size = H5S_hyper_get_clip_extent_match(storage->list[i].source_select, storage->list[i].source_dset.virtual_select, virtual_dims[storage->list[i].unlim_dim_virtual], FALSE); + + /* Close previous clipped virtual selection, if any */ + if(storage->list[i].source_dset.clipped_virtual_select) { + HDassert(storage->list[i].source_dset.clipped_virtual_select + != storage->list[i].source_dset.virtual_select); + if(H5S_close(storage->list[i].source_dset.clipped_virtual_select) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "unable to release clipped virtual dataspace") + } /* end if */ + + /* Copy virtual selection */ + if(NULL == (storage->list[i].source_dset.clipped_virtual_select = H5S_copy(storage->list[i].source_dset.virtual_select, FALSE, TRUE))) + HGOTO_ERROR(H5E_DATASET, H5E_CANTCOPY, FAIL, "unable to copy virtual selection") + + /* Close previous clipped source selection, if any */ + if(storage->list[i].source_dset.clipped_source_select) { + HDassert(storage->list[i].source_dset.clipped_source_select + != storage->list[i].source_select); + if(H5S_close(storage->list[i].source_dset.clipped_source_select) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "unable to release clipped source dataspace") + } /* end if */ + + /* Copy source selection */ + if(NULL == (storage->list[i].source_dset.clipped_source_select = H5S_copy(storage->list[i].source_select, FALSE, TRUE))) + HGOTO_ERROR(H5E_DATASET, H5E_CANTCOPY, FAIL, "unable to copy source selection") + + /* Check if the clip size is within the current extent of + * the source dataset */ + if(clip_size <= source_dims[storage->list[i].unlim_dim_source]) { + /* Clip virtual selection to extent */ + if(H5S_hyper_clip_unlim(storage->list[i].source_dset.clipped_virtual_select, virtual_dims[storage->list[i].unlim_dim_virtual])) + HGOTO_ERROR(H5E_DATASET, H5E_CANTCLIP, FAIL, "failed to clip unlimited selection") + + /* Clip source selection to clip_size */ + if(H5S_hyper_clip_unlim(storage->list[i].source_dset.clipped_source_select, clip_size)) + HGOTO_ERROR(H5E_DATASET, H5E_CANTCLIP, FAIL, "failed to clip unlimited selection") + } /* end if */ + else { + /* Get size that virtual selection will be clipped to to + * match size of source selection within source extent + */ + clip_size = H5S_hyper_get_clip_extent_match(storage->list[i].source_dset.virtual_select, storage->list[i].source_select, source_dims[storage->list[i].unlim_dim_source], FALSE); + + /* Clip virtual selection to clip_size */ + if(H5S_hyper_clip_unlim(storage->list[i].source_dset.clipped_virtual_select, clip_size)) + HGOTO_ERROR(H5E_DATASET, H5E_CANTCLIP, FAIL, "failed to clip unlimited selection") + + /* Clip source selection to extent */ + if(H5S_hyper_clip_unlim(storage->list[i].source_dset.clipped_source_select, source_dims[storage->list[i].unlim_dim_source])) + HGOTO_ERROR(H5E_DATASET, H5E_CANTCLIP, FAIL, "failed to clip unlimited selection") + } /* end else */ + } /* end if */ + else { + HDassert(!storage->list[i].source_dset.clipped_virtual_select); + HDassert(!storage->list[i].source_dset.clipped_source_select); + } /* end else */ + } /* end if */ + else { + /* printf mapping */ + size_t sub_dset_max; + hbool_t partial_block; + + /* Get number of sub-source datasets in current extent */ + sub_dset_max = (size_t)H5S_hyper_get_first_inc_block(storage->list[i].source_dset.virtual_select, virtual_dims[storage->list[i].unlim_dim_virtual], &partial_block); + if(partial_block) + sub_dset_max++; + + /* Allocate or grow the sub_dset array if necessary */ + if(!storage->list[i].sub_dset) { + /* Allocate sub_dset array */ + if(NULL == (storage->list[i].sub_dset = (H5O_storage_virtual_srcdset_t *)H5MM_calloc(sub_dset_max * sizeof(H5O_storage_virtual_srcdset_t)))) + HGOTO_ERROR(H5E_RESOURCE, H5E_CANTALLOC, FAIL, "unable to allocate sub dataset array") + + /* Update sub_dset_nalloc */ + storage->list[i].sub_dset_nalloc = sub_dset_max; + } /* end if */ + else if(sub_dset_max > storage->list[i].sub_dset_nalloc) { + H5O_storage_virtual_srcdset_t *tmp_sub_dset; + + /* Extend sub_dset array */ + if(NULL == (tmp_sub_dset = (H5O_storage_virtual_srcdset_t *)H5MM_realloc(storage->list[i].sub_dset, sub_dset_max * sizeof(H5O_storage_virtual_srcdset_t)))) + HGOTO_ERROR(H5E_RESOURCE, H5E_CANTALLOC, FAIL, "unable to extend sub dataset array") + storage->list[i].sub_dset = tmp_sub_dset; + + /* Clear new space in sub_dset */ + (void)HDmemset(&storage->list[i].sub_dset[storage->list[i].sub_dset_nalloc], 0, (sub_dset_max - storage->list[i].sub_dset_nalloc) * sizeof(H5O_storage_virtual_srcdset_t)); + + /* Update sub_dset_nalloc */ + storage->list[i].sub_dset_nalloc = sub_dset_max; + } /* end if */ + + /* Iterate over sub dsets */ + for(j = 0; j < sub_dset_max; j++) { + /* Resolve file name */ + if(!storage->list[i].sub_dset[j].file_name) + if(H5D__virtual_build_source_name(storage->list[i].source_file_name, storage->list[i].parsed_source_file_name, storage->list[i].psfn_static_strlen, storage->list[i].psfn_nsubs, j, &storage->list[i].sub_dset[j].file_name) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "unable to build source file name") + + /* Resolve dset name */ + if(!storage->list[i].sub_dset[j].dset_name) + if(H5D__virtual_build_source_name(storage->list[i].source_dset_name, storage->list[i].parsed_source_dset_name, storage->list[i].psdn_static_strlen, storage->list[i].psdn_nsubs, j, &storage->list[i].sub_dset[j].dset_name) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "unable to build source dataset name") + + /* Resolve virtual selection for block */ + if(!storage->list[i].sub_dset[j].virtual_select) + if(NULL == (storage->list[i].sub_dset[j].virtual_select = H5S_hyper_get_unlim_block(storage->list[i].source_dset.virtual_select, j))) + HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "unable to get block in unlimited selection") + + /* Close previous clipped source selection, if any */ + if(storage->list[i].sub_dset[j].clipped_source_select != storage->list[i].source_select) { + if(storage->list[i].sub_dset[j].clipped_source_select) + if(H5S_close(storage->list[i].sub_dset[j].clipped_source_select) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "unable to release clipped source dataspace") + + /* Initialize clipped source selection to point to base + * source selection */ + storage->list[i].sub_dset[j].clipped_source_select = storage->list[i].source_select; + } /* end if */ + + /* Close previous clipped virtual selection, if any */ + if(storage->list[i].sub_dset[j].clipped_virtual_select != storage->list[i].sub_dset[j].virtual_select) { + if(storage->list[i].sub_dset[j].clipped_virtual_select) + if(H5S_close(storage->list[i].sub_dset[j].clipped_virtual_select) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "unable to release clipped virtual dataspace") + + /* Initialize clipped virtual selection to point to + * unclipped virtual selection */ + storage->list[i].sub_dset[j].clipped_virtual_select = storage->list[i].sub_dset[j].virtual_select; + } /* end if */ + + /* Clear clipped selections if this is a partial block, + * defer calculation of real clipped selections to + * H5D__virtual_pre_io() as we may not have a valid source + * extent here */ + if((j == (sub_dset_max - 1)) && partial_block) { + /* Clear clipped source and virtual selections */ + storage->list[i].sub_dset[j].clipped_source_select = NULL; + storage->list[i].sub_dset[j].clipped_virtual_select = NULL; + } /* end else */ + /* Note we do not need to open the source file, this will + * happen later in H5D__virtual_pre_io() */ + } /* end for */ + + /* Update sub_dset_nused */ + storage->list[i].sub_dset_nused = sub_dset_max; + } /* end else */ + } /* end if */ + else { + /* Limited mapping, just make sure the clipped selections were + * already set. Again, no need to open the source file. */ + HDassert(storage->list[i].source_dset.clipped_virtual_select); + HDassert(storage->list[i].source_dset.clipped_source_select); + } /* end else */ + + /* Mark layout as fully initialized */ + storage->init = TRUE; + +done: + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5D__virtual_init_all() */ + + +/*------------------------------------------------------------------------- + * Function: H5D__virtual_init + * + * Purpose: Initialize the virtual layout information for a dataset. + * This is called when the dataset is initialized. + * + * Return: Non-negative on success/Negative on failure + * + * Programmer: Neil Fortner + * Thursday, April 30, 2015 + * + *------------------------------------------------------------------------- + */ +herr_t +H5D__virtual_init(H5F_t *f, hid_t H5_ATTR_UNUSED dxpl_id, const H5D_t *dset, + hid_t dapl_id) +{ + H5O_storage_virtual_t *storage; /* Convenience pointer */ + H5P_genplist_t *dapl; /* Data access property list object pointer */ + hssize_t old_offset[H5O_LAYOUT_NDIMS]; /* Old selection offset (unused) */ + size_t i; /* Local index variables */ + herr_t ret_value = SUCCEED; /* Return value */ + + FUNC_ENTER_PACKAGE + + /* Sanity check */ + HDassert(dset); + storage = &dset->shared->layout.storage.u.virt; + HDassert(storage->list || (storage->list_nused == 0)); + + /* Check that the dimensions of the VDS are large enough */ + if(H5D_virtual_check_min_dims(dset) < 0) + HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "virtual dataset dimensions not large enough to contain all limited dimensions in all selections") + + /* Patch the virtual selection dataspaces. Note we always patch the space + * status because this layout could be from an old version held in the + * object header message code. We cannot update that held message because + * the layout message is constant, so just overwrite the values here (and + * invalidate other fields by setting storage->init to FALSE below). Also + * remove offset from selections. We only have to update + * source_space_status and virtual_space_status because others will be based + * on these and should therefore already have been normalized. */ + for(i = 0; i < storage->list_nused; i++) { + HDassert(storage->list[i].sub_dset_nalloc == 0); + + /* Patch extent */ + if(H5S_extent_copy(storage->list[i].source_dset.virtual_select, dset->shared->space) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTCOPY, FAIL, "can't copy virtual dataspace extent") + storage->list[i].virtual_space_status = H5O_VIRTUAL_STATUS_CORRECT; + + /* Mark source extent as invalid */ + storage->list[i].source_space_status = H5O_VIRTUAL_STATUS_INVALID; + + /* Normalize offsets, toss out old offset values */ + if(H5S_hyper_normalize_offset(storage->list[i].source_dset.virtual_select, old_offset) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_BADSELECT, FAIL, "unable to normalize dataspace by offset") + if(H5S_hyper_normalize_offset(storage->list[i].source_select, old_offset) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_BADSELECT, FAIL, "unable to normalize dataspace by offset") + } /* end for */ + + /* Get dataset access property list */ + if(NULL == (dapl = (H5P_genplist_t *)H5I_object(dapl_id))) + HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, FAIL, "can't find object for dapl ID") + + /* Get view option */ + if(H5P_get(dapl, H5D_ACS_VDS_VIEW_NAME, &storage->view) < 0) + HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't get virtual view option") + + /* Get printf gap if view is H5D_VDS_LAST_AVAILABLE, otherwise set to 0 */ + if(storage->view == H5D_VDS_LAST_AVAILABLE) { + if(H5P_get(dapl, H5D_ACS_VDS_PRINTF_GAP_NAME, &storage->printf_gap) < 0) + HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't get virtual printf gap") + } /* end if */ + else + storage->printf_gap = (hsize_t)0; + + /* Retrieve VDS file FAPL to layout */ + if(storage->source_fapl <= 0) + if((storage->source_fapl = H5F_get_access_plist(f, FALSE)) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "can't get fapl") + + /* Copy DAPL to layout */ + if(storage->source_dapl <= 0) + if((storage->source_dapl = H5P_copy_plist(dapl, FALSE)) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTCOPY, FAIL, "can't copy dapl") + + /* Mark layout as not fully initialized (must be done prior to I/O for + * unlimited/printf selections) */ + storage->init = FALSE; + +done: + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5D__virtual_init() */ + + +/*------------------------------------------------------------------------- + * Function: H5D__virtual_is_space_alloc + * + * Purpose: Query if space is allocated for layout + * + * Return: TRUE if space is allocated + * FALSE if it is not + * Negative on failure + * + * Programmer: Neil Fortner + * February 6, 2015 + * + *------------------------------------------------------------------------- + */ +hbool_t +H5D__virtual_is_space_alloc(const H5O_storage_t H5_ATTR_UNUSED *storage) +{ + hbool_t ret_value; /* Return value */ + + FUNC_ENTER_PACKAGE_NOERR + + /* Just return TRUE, since the global heap object containing the mappings is + * created when the layout message is encoded, and nothing else needs to be + * allocated for virtual datasets. This also ensures that the library never + * assumes (falsely) that no data is present in the dataset, causing errors. + */ + ret_value = TRUE; + + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5D__virtual_is_space_alloc() */ + + +/*------------------------------------------------------------------------- + * Function: H5D__virtual_pre_io + * + * Purpose: Project all virtual mappings onto mem_space, with the + * results stored in projected_mem_space for each mapping. + * Opens all source datasets if possible. The total number + * of elements is stored in tot_nelmts. + * + * Return: Non-negative on success/Negative on failure + * + * Programmer: Neil Fortner + * June 3, 2015 + * + *------------------------------------------------------------------------- + */ +static herr_t +H5D__virtual_pre_io(H5D_io_info_t *io_info, + H5O_storage_virtual_t *storage, const H5S_t *file_space, + const H5S_t *mem_space, hsize_t *tot_nelmts) +{ + hssize_t select_nelmts; /* Number of elements in selection */ + hsize_t bounds_start[H5S_MAX_RANK]; /* Selection bounds start */ + hsize_t bounds_end[H5S_MAX_RANK]; /* Selection bounds end */ + int rank; + hbool_t bounds_init = FALSE; /* Whether bounds_start, bounds_end, and rank are valid */ + size_t i, j, k; /* Local index variables */ + herr_t ret_value = SUCCEED; /* Return value */ + + FUNC_ENTER_STATIC + + /* Sanity check */ + HDassert(storage); + HDassert(mem_space); + HDassert(file_space); + HDassert(tot_nelmts); + + /* Initialize layout if necessary */ + if(!storage->init) + if(H5D__virtual_init_all(io_info->dset, io_info->dxpl_id) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "can't initialize virtual layout") + + /* Initialize tot_nelmts */ + *tot_nelmts = 0; + + /* Iterate over mappings */ + for(i = 0; i < storage->list_nused; i++) { + /* Sanity check that the virtual space has been patched by now */ + HDassert(storage->list[i].virtual_space_status == H5O_VIRTUAL_STATUS_CORRECT); + + /* Check for "printf" source dataset resolution */ + if(storage->list[i].psfn_nsubs || storage->list[i].psdn_nsubs) { + hbool_t partial_block; + + HDassert(storage->list[i].unlim_dim_virtual >= 0); + + /* Get selection bounds if necessary */ + if(!bounds_init) { + /* Get rank of VDS */ + if((rank = H5S_GET_EXTENT_NDIMS(io_info->dset->shared->space)) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "unable to get number of dimensions") + + /* Get selection bounds */ + if(H5S_SELECT_BOUNDS(file_space, bounds_start, bounds_end) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "unable to get selection bounds") + + /* Adjust bounds_end to represent the extent just enclosing them + * (add 1) */ + for(j = 0; j < (size_t)rank; j++) + bounds_end[j]++; + + /* Bounds are now initialized */ + bounds_init = TRUE; + } /* end if */ + + /* Get index of first block in virtual selection */ + storage->list[i].sub_dset_io_start = (size_t)H5S_hyper_get_first_inc_block(storage->list[i].source_dset.virtual_select, bounds_start[storage->list[i].unlim_dim_virtual], NULL); + + /* Get index of first block outside of virtual selection */ + storage->list[i].sub_dset_io_end = (size_t)H5S_hyper_get_first_inc_block(storage->list[i].source_dset.virtual_select, bounds_end[storage->list[i].unlim_dim_virtual], &partial_block); + if(partial_block) + storage->list[i].sub_dset_io_end++; + if(storage->list[i].sub_dset_io_end > storage->list[i].sub_dset_nused) + storage->list[i].sub_dset_io_end = storage->list[i].sub_dset_nused; + + /* Iterate over sub-source dsets */ + for(j = storage->list[i].sub_dset_io_start; j < storage->list[i].sub_dset_io_end; j++) { + /* Check for clipped virtual selection */ + if(!storage->list[i].sub_dset[j].clipped_virtual_select) { + hsize_t start[H5S_MAX_RANK]; + /* This should only be NULL if this is a partial block */ + HDassert((j == (storage->list[i].sub_dset_io_end - 1)) && partial_block); + + /* If the source space status is not correct, we must try to + * open the source dataset to patch it */ + if(storage->list[i].source_space_status != H5O_VIRTUAL_STATUS_CORRECT) { + HDassert(!storage->list[i].sub_dset[j].dset); + if(H5D__virtual_open_source_dset(io_info->dset, &storage->list[i], &storage->list[i].sub_dset[j], io_info->dxpl_id) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTOPENOBJ, FAIL, "unable to open source dataset") + } /* end if */ + + /* If we obtained a valid source space, we must create + * clipped source and virtual selections, otherwise we + * cannot do this and we will leave them NULL. This doesn't + * hurt anything because we can't do I/O because the dataset + * must not have been found. */ + if(storage->list[i].source_space_status == H5O_VIRTUAL_STATUS_CORRECT) { + hsize_t tmp_dims[H5S_MAX_RANK]; + hsize_t vbounds_end[H5S_MAX_RANK]; + + /* Get bounds of virtual selection */ + if(H5S_SELECT_BOUNDS(storage->list[i].sub_dset[j].virtual_select, tmp_dims, vbounds_end) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "unable to get selection bounds") + + HDassert(bounds_init); + + /* Convert bounds to extent (add 1) */ + for(k = 0; k < (size_t)rank; k++) + vbounds_end[k]++; + + /* Temporarily set extent of virtual selection to bounds */ + if(H5S_set_extent(storage->list[i].sub_dset[j].virtual_select, vbounds_end) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to modify size of data space") + + /* Get current VDS dimensions */ + if(H5S_get_simple_extent_dims(io_info->dset->shared->space, tmp_dims, NULL) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "can't get VDS dimensions") + + /* Copy virtual selection */ + if(NULL == (storage->list[i].sub_dset[j].clipped_virtual_select = H5S_copy(storage->list[i].sub_dset[j].virtual_select, FALSE, TRUE))) + HGOTO_ERROR(H5E_DATASET, H5E_CANTCOPY, FAIL, "unable to copy virtual selection") + + /* Clip virtual selection to real virtual extent */ + (void)HDmemset(start, 0, sizeof(start)); + if(H5S_select_hyperslab(storage->list[i].sub_dset[j].clipped_virtual_select, H5S_SELECT_AND, start, NULL, tmp_dims, NULL) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTSELECT, FAIL, "unable to clip hyperslab") + + /* Project intersection of virtual space and clipped + * virtual space onto source space (create + * clipped_source_select) */ + if(H5S_select_project_intersection(storage->list[i].sub_dset[j].virtual_select, storage->list[i].source_select, storage->list[i].sub_dset[j].clipped_virtual_select, &storage->list[i].sub_dset[j].clipped_source_select) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTCLIP, FAIL, "can't project virtual intersection onto memory space") + + /* Set extents of virtual_select and + * clipped_virtual_select to virtual extent */ + if(H5S_set_extent(storage->list[i].sub_dset[j].virtual_select, tmp_dims) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to modify size of data space") + if(H5S_set_extent(storage->list[i].sub_dset[j].clipped_virtual_select, tmp_dims) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to modify size of data space") + } /* end if */ + } /* end if */ + + /* Only continue if we managed to obtain a + * clipped_virtual_select */ + if(storage->list[i].sub_dset[j].clipped_virtual_select) { + /* Project intersection of file space and mapping virtual space + * onto memory space */ + if(H5S_select_project_intersection(file_space, mem_space, storage->list[i].sub_dset[j].clipped_virtual_select, &storage->list[i].sub_dset[j].projected_mem_space) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTCLIP, FAIL, "can't project virtual intersection onto memory space") + + /* Check number of elements selected */ + if((select_nelmts = (hssize_t)H5S_GET_SELECT_NPOINTS(storage->list[i].sub_dset[j].projected_mem_space)) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTCOUNT, FAIL, "unable to get number of elements in selection") + + /* Check if anything is selected */ + if(select_nelmts > (hssize_t)0) { + /* Open source dataset */ + if(!storage->list[i].sub_dset[j].dset) + /* Try to open dataset */ + if(H5D__virtual_open_source_dset(io_info->dset, &storage->list[i], &storage->list[i].sub_dset[j], io_info->dxpl_id) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTOPENOBJ, FAIL, "unable to open source dataset") + + /* If the source dataset is not open, mark the selected + * elements as zero so projected_mem_space is freed */ + if(!storage->list[i].sub_dset[j].dset) + select_nelmts = (hssize_t)0; + } /* end if */ + + /* If there are not elements selected in this mapping, free + * projected_mem_space, otherwise update tot_nelmts */ + if(select_nelmts == (hssize_t)0) { + if(H5S_close(storage->list[i].sub_dset[j].projected_mem_space) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "can't close projected memory space") + storage->list[i].sub_dset[j].projected_mem_space = NULL; + } /* end if */ + else + *tot_nelmts += (hsize_t)select_nelmts; + } /* end if */ + } /* end for */ + } /* end if */ + else { + if(storage->list[i].source_dset.clipped_virtual_select) { + /* Project intersection of file space and mapping virtual space onto + * memory space */ + if(H5S_select_project_intersection(file_space, mem_space, storage->list[i].source_dset.clipped_virtual_select, &storage->list[i].source_dset.projected_mem_space) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTCLIP, FAIL, "can't project virtual intersection onto memory space") + + /* Check number of elements selected, add to tot_nelmts */ + if((select_nelmts = (hssize_t)H5S_GET_SELECT_NPOINTS(storage->list[i].source_dset.projected_mem_space)) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTCOUNT, FAIL, "unable to get number of elements in selection") + + /* Check if anything is selected */ + if(select_nelmts > (hssize_t)0) { + /* Open source dataset */ + if(!storage->list[i].source_dset.dset) + /* Try to open dataset */ + if(H5D__virtual_open_source_dset(io_info->dset, &storage->list[i], &storage->list[i].source_dset, io_info->dxpl_id) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTOPENOBJ, FAIL, "unable to open source dataset") + + /* If the source dataset is not open, mark the selected elements + * as zero so projected_mem_space is freed */ + if(!storage->list[i].source_dset.dset) + select_nelmts = (hssize_t)0; + } /* end if */ + + /* If there are not elements selected in this mapping, free + * projected_mem_space, otherwise update tot_nelmts */ + if(select_nelmts == (hssize_t)0) { + if(H5S_close(storage->list[i].source_dset.projected_mem_space) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "can't close projected memory space") + storage->list[i].source_dset.projected_mem_space = NULL; + } /* end if */ + else + *tot_nelmts += (hsize_t)select_nelmts; + } /* end if */ + else { + /* If there is no clipped_dim_virtual, this must be an unlimited + * selection whose dataset was not found in the last call to + * H5Dget_space(). Do not attempt to open it as this might + * affect the extent and we are not going to recalculate it + * here. */ + HDassert(storage->list[i].unlim_dim_virtual >= 0); + HDassert(!storage->list[i].source_dset.dset); + } /* end else */ + } /* end else */ + } /* end for */ + +done: + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5D__virtual_pre_io() */ + + +/*------------------------------------------------------------------------- + * Function: H5D__virtual_post_io + * + * Purpose: Frees memory structures allocated by H5D__virtual_pre_io. + * + * Return: Non-negative on success/Negative on failure + * + * Programmer: Neil Fortner + * June 4, 2015 + * + *------------------------------------------------------------------------- + */ +static herr_t +H5D__virtual_post_io(H5O_storage_virtual_t *storage) +{ + size_t i, j; /* Local index variables */ + herr_t ret_value = SUCCEED; /* Return value */ + + FUNC_ENTER_STATIC + + /* Sanity check */ + HDassert(storage); + + /* Iterate over mappings */ + for(i = 0; i < storage->list_nused; i++) + /* Check for "printf" source dataset resolution */ + if(storage->list[i].psfn_nsubs || storage->list[i].psdn_nsubs) { + /* Iterate over sub-source dsets */ + for(j = storage->list[i].sub_dset_io_start; j < storage->list[i].sub_dset_io_end; j++) + /* Close projected memory space */ + if(storage->list[i].sub_dset[j].projected_mem_space) { + if(H5S_close(storage->list[i].sub_dset[j].projected_mem_space) < 0) + HDONE_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "can't close temporary space") + storage->list[i].sub_dset[j].projected_mem_space = NULL; + } /* end if */ + } /* end if */ + else + /* Close projected memory space */ + if(storage->list[i].source_dset.projected_mem_space) { + if(H5S_close(storage->list[i].source_dset.projected_mem_space) < 0) + HDONE_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "can't close temporary space") + storage->list[i].source_dset.projected_mem_space = NULL; + } /* end if */ + + /* Note the lack of a done: label. This is because there are no HGOTO_ERROR + * calls. If one is added, a done: label must also be added */ + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5D__virtual_post_io() */ + + +/*------------------------------------------------------------------------- + * Function: H5D__virtual_read_one + * + * Purpose: Read from a singe source dataset in a virtual dataset. + * + * Return: Non-negative on success/Negative on failure + * + * Programmer: Neil Fortner + * May 15, 2015 + * + *------------------------------------------------------------------------- + */ +static herr_t +H5D__virtual_read_one(H5D_io_info_t *io_info, const H5D_type_info_t *type_info, + const H5S_t *file_space, H5O_storage_virtual_srcdset_t *source_dset) +{ + H5S_t *projected_src_space = NULL; /* File space for selection in a single source dataset */ + herr_t ret_value = SUCCEED; /* Return value */ + + FUNC_ENTER_STATIC + + HDassert(source_dset); + + /* Only perform I/O if there is a projected memory space, otherwise there + * were no elements in the projection or the source dataset could not be + * opened */ + if(source_dset->projected_mem_space) { + HDassert(source_dset->dset); + HDassert(source_dset->clipped_source_select); + + /* Project intersection of file space and mapping virtual space onto + * mapping source space */ + if(H5S_select_project_intersection(source_dset->clipped_virtual_select, source_dset->clipped_source_select, file_space, &projected_src_space) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTCLIP, FAIL, "can't project virtual intersection onto source space") + + /* Perform read on source dataset */ + if(H5D__read(source_dset->dset, type_info->dst_type_id, source_dset->projected_mem_space, projected_src_space, io_info->dxpl_id, io_info->u.rbuf) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_READERROR, FAIL, "can't read source dataset") + + /* Close projected_src_space */ + if(H5S_close(projected_src_space) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "can't close projected source space") + projected_src_space = NULL; + } /* end if */ + +done: + /* Release allocated resources on failure */ + if(projected_src_space) { + HDassert(ret_value < 0); + if(H5S_close(projected_src_space) < 0) + HDONE_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "can't close projected source space") + } /* end if */ + + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5D__virtual_read_one() */ + + +/*------------------------------------------------------------------------- + * Function: H5D__virtual_read + * + * Purpose: Read from a virtual dataset. + * + * Return: Non-negative on success/Negative on failure + * + * Programmer: Neil Fortner + * February 6, 2015 + * + *------------------------------------------------------------------------- + */ +static herr_t +H5D__virtual_read(H5D_io_info_t *io_info, const H5D_type_info_t *type_info, + hsize_t nelmts, const H5S_t *file_space, const H5S_t *mem_space, + H5D_chunk_map_t H5_ATTR_UNUSED *fm) +{ + H5O_storage_virtual_t *storage; /* Convenient pointer into layout struct */ + hsize_t tot_nelmts; /* Total number of elements mapped to mem_space */ + H5S_t *fill_space = NULL; /* Space to fill with fill value */ + size_t i, j; /* Local index variables */ + herr_t ret_value = SUCCEED; /* Return value */ + + FUNC_ENTER_STATIC + + /* Sanity check */ + HDassert(io_info); + HDassert(io_info->u.rbuf); + HDassert(type_info); + HDassert(mem_space); + HDassert(file_space); + + storage = &io_info->dset->shared->layout.storage.u.virt; + HDassert((storage->view == H5D_VDS_FIRST_MISSING) || (storage->view == H5D_VDS_LAST_AVAILABLE)); + +#ifdef H5_HAVE_PARALLEL + /* Parallel reads are not supported (yet) */ + if(H5F_HAS_FEATURE(io_info->dset->oloc.file, H5FD_FEAT_HAS_MPI)) + HGOTO_ERROR(H5E_DATASET, H5E_UNSUPPORTED, FAIL, "parallel reads not supported on virtual datasets") +#endif /* H5_HAVE_PARALLEL */ + + /* Prepare for I/O operation */ + if(H5D__virtual_pre_io(io_info, storage, file_space, mem_space, &tot_nelmts) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTCLIP, FAIL, "unable to prepare for I/O operation") + + /* Iterate over mappings */ + for(i = 0; i < storage->list_nused; i++) { + /* Sanity check that the virtual space has been patched by now */ + HDassert(storage->list[i].virtual_space_status == H5O_VIRTUAL_STATUS_CORRECT); + + /* Check for "printf" source dataset resolution */ + if(storage->list[i].psfn_nsubs || storage->list[i].psdn_nsubs) { + /* Iterate over sub-source dsets */ + for(j = storage->list[i].sub_dset_io_start; + j < storage->list[i].sub_dset_io_end; j++) + if(H5D__virtual_read_one(io_info, type_info, file_space, &storage->list[i].sub_dset[j]) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_READERROR, FAIL, "unable to read source dataset") + } /* end if */ + else + /* Read from source dataset */ + if(H5D__virtual_read_one(io_info, type_info, file_space, &storage->list[i].source_dset) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_READERROR, FAIL, "unable to read source dataset") + } /* end for */ + + /* Fill unmapped part of buffer with fill value */ + if(tot_nelmts < nelmts) { + H5D_fill_value_t fill_status; /* Fill value status */ + + /* Check the fill value status */ + if(H5P_is_fill_value_defined(&io_info->dset->shared->dcpl_cache.fill, &fill_status) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "can't tell if fill value defined") + + /* Always write fill value to memory buffer unless it is undefined */ + if(fill_status != H5D_FILL_VALUE_UNDEFINED) { + /* Start with fill space equal to memory space */ + if(NULL == (fill_space = H5S_copy(mem_space, FALSE, TRUE))) + HGOTO_ERROR(H5E_DATASET, H5E_CANTCOPY, FAIL, "unable to copy memory selection") + + /* Iterate over mappings */ + for(i = 0; i < storage->list_nused; i++) + /* Check for "printf" source dataset resolution */ + if(storage->list[i].psfn_nsubs || storage->list[i].psdn_nsubs) { + /* Iterate over sub-source dsets */ + for(j = storage->list[i].sub_dset_io_start; + j < storage->list[i].sub_dset_io_end; j++) + if(storage->list[i].sub_dset[j].projected_mem_space) + if(H5S_select_subtract(fill_space, storage->list[i].sub_dset[j].projected_mem_space) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTCLIP, FAIL, "unable to clip fill selection") + } /* end if */ + else + if(storage->list[i].source_dset.projected_mem_space) + /* Subtract projected memory space from fill space */ + if(H5S_select_subtract(fill_space, storage->list[i].source_dset.projected_mem_space) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTCLIP, FAIL, "unable to clip fill selection") + + /* Write fill values to memory buffer */ + if(H5D__fill(io_info->dset->shared->dcpl_cache.fill.buf, io_info->dset->shared->type, io_info->u.rbuf, type_info->mem_type, fill_space, io_info->dxpl_id) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "filling buf failed") + +#ifndef NDEBUG + /* Make sure the total number of elements written (including fill + * values) >= nelmts */ + { + hssize_t select_nelmts; /* Number of elements in selection */ + + /* Get number of elements in fill dataspace */ + if((select_nelmts = (hssize_t)H5S_GET_SELECT_NPOINTS(fill_space)) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTCOUNT, FAIL, "unable to get number of elements in selection") + + /* Verify number of elements is correct. Note that since we + * don't check for overlap we can't assert that these are equal + */ + HDassert((tot_nelmts + (hsize_t)select_nelmts) >= nelmts); + } /* end block */ +#endif /* NDEBUG */ + } /* end if */ + } /* end if */ + +done: + /* Cleanup I/O operation */ + if(H5D__virtual_post_io(storage) < 0) + HDONE_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "can't cleanup I/O operation") + + /* Close fill space */ + if(fill_space) + if(H5S_close(fill_space) < 0) + HDONE_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "can't close fill space") + + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5D__virtual_read() */ + + +/*------------------------------------------------------------------------- + * Function: H5D__virtual_write_one + * + * Purpose: Write to a singe source dataset in a virtual dataset. + * + * Return: Non-negative on success/Negative on failure + * + * Programmer: Neil Fortner + * May 15, 2015 + * + *------------------------------------------------------------------------- + */ +static herr_t +H5D__virtual_write_one(H5D_io_info_t *io_info, const H5D_type_info_t *type_info, + const H5S_t *file_space, H5O_storage_virtual_srcdset_t *source_dset) +{ + H5S_t *projected_src_space = NULL; /* File space for selection in a single source dataset */ + herr_t ret_value = SUCCEED; /* Return value */ + + FUNC_ENTER_STATIC + + HDassert(source_dset); + + /* Only perform I/O if there is a projected memory space, otherwise there + * were no elements in the projection */ + if(source_dset->projected_mem_space) { + HDassert(source_dset->dset); + HDassert(source_dset->clipped_source_select); + + /* In the future we may wish to extent this implementation to extend + * source datasets if a write to a virtual dataset goes past the current + * extent in the unlimited dimension. -NAF */ + /* Project intersection of file space and mapping virtual space onto + * mapping source space */ + if(H5S_select_project_intersection(source_dset->virtual_select, source_dset->clipped_source_select, file_space, &projected_src_space) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTCLIP, FAIL, "can't project virtual intersection onto source space") + + /* Perform write on source dataset */ + if(H5D__write(source_dset->dset, type_info->dst_type_id, source_dset->projected_mem_space, projected_src_space, io_info->dxpl_id, io_info->u.wbuf) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_WRITEERROR, FAIL, "can't write to source dataset") + + /* Close projected_src_space */ + if(H5S_close(projected_src_space) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "can't close projected source space") + projected_src_space = NULL; + } /* end if */ + +done: + /* Release allocated resources on failure */ + if(projected_src_space) { + HDassert(ret_value < 0); + if(H5S_close(projected_src_space) < 0) + HDONE_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "can't close projected source space") + } /* end if */ + + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5D__virtual_write_one() */ + + +/*------------------------------------------------------------------------- + * Function: H5D__virtual_write + * + * Purpose: Write to a virtual dataset. + * + * Return: Non-negative on success/Negative on failure + * + * Programmer: Neil Fortner + * February 6, 2015 + * + *------------------------------------------------------------------------- + */ +static herr_t +H5D__virtual_write(H5D_io_info_t *io_info, const H5D_type_info_t *type_info, + hsize_t nelmts, const H5S_t *file_space, const H5S_t *mem_space, + H5D_chunk_map_t H5_ATTR_UNUSED *fm) +{ + H5O_storage_virtual_t *storage; /* Convenient pointer into layout struct */ + hsize_t tot_nelmts; /* Total number of elements mapped to mem_space */ + size_t i, j; /* Local index variables */ + herr_t ret_value = SUCCEED; /* Return value */ + + FUNC_ENTER_STATIC + + /* Sanity check */ + HDassert(io_info); + HDassert(io_info->u.wbuf); + HDassert(type_info); + HDassert(mem_space); + HDassert(file_space); + + storage = &io_info->dset->shared->layout.storage.u.virt; + HDassert((storage->view == H5D_VDS_FIRST_MISSING) || (storage->view == H5D_VDS_LAST_AVAILABLE)); + +#ifdef H5_HAVE_PARALLEL + /* Parallel writes are not supported (yet) */ + if(H5F_HAS_FEATURE(io_info->dset->oloc.file, H5FD_FEAT_HAS_MPI)) + HGOTO_ERROR(H5E_DATASET, H5E_UNSUPPORTED, FAIL, "parallel writes not supported on virtual datasets") +#endif /* H5_HAVE_PARALLEL */ + + /* Prepare for I/O operation */ + if(H5D__virtual_pre_io(io_info, storage, file_space, mem_space, &tot_nelmts) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTCLIP, FAIL, "unable to prepare for I/O operation") + + /* Fail if there are unmapped parts of the selection as they would not be + * written */ + if(tot_nelmts != nelmts) + HGOTO_ERROR(H5E_DATASPACE, H5E_BADVALUE, FAIL, "write requested to unmapped portion of virtual dataset") + + /* Iterate over mappings */ + for(i = 0; i < storage->list_nused; i++) { + /* Sanity check that virtual space has been patched by now */ + HDassert(storage->list[i].virtual_space_status == H5O_VIRTUAL_STATUS_CORRECT); + + /* Check for "printf" source dataset resolution */ + if(storage->list[i].psfn_nsubs || storage->list[i].psdn_nsubs) { + /* Iterate over sub-source dsets */ + for(j = storage->list[i].sub_dset_io_start; + j < storage->list[i].sub_dset_io_end; j++) + if(H5D__virtual_write_one(io_info, type_info, file_space, &storage->list[i].sub_dset[j]) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_WRITEERROR, FAIL, "unable to write to source dataset") + } /* end if */ + else + /* Write to source dataset */ + if(H5D__virtual_write_one(io_info, type_info, file_space, &storage->list[i].source_dset) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_WRITEERROR, FAIL, "unable to write to source dataset") + } /* end for */ + +done: + /* Cleanup I/O operation */ + if(H5D__virtual_post_io(storage) < 0) + HDONE_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "can't cleanup I/O operation") + + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5D__virtual_write() */ + + +/*------------------------------------------------------------------------- + * Function: H5D__virtual_flush + * + * Purpose: Writes all dirty data to disk. + * + * Return: Non-negative on success/Negative on failure + * + * Programmer: Neil Fortner + * February 6, 2015 + * + *------------------------------------------------------------------------- + */ +static herr_t +H5D__virtual_flush(H5D_t *dset, hid_t dxpl_id) +{ + H5O_storage_virtual_t *storage; /* Convenient pointer into layout struct */ + size_t i, j; /* Local index variables */ + herr_t ret_value = SUCCEED; /* Return value */ + + FUNC_ENTER_STATIC + + /* Sanity check */ + HDassert(dset); + + storage = &dset->shared->layout.storage.u.virt; + + /* Flush only open datasets */ + for(i = 0; i < storage->list_nused; i++) + /* Check for "printf" source dataset resolution */ + if(storage->list[i].psfn_nsubs || storage->list[i].psdn_nsubs) { + /* Iterate over sub-source dsets */ + for(j = 0; j < storage->list[i].sub_dset_nused; j++) + if(storage->list[i].sub_dset[j].dset) + /* Flush source dataset */ + if(H5D__flush_real(storage->list[i].sub_dset[j].dset, dxpl_id) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_WRITEERROR, FAIL, "unable to flush source dataset") + } /* end if */ + else + if(storage->list[i].source_dset.dset) + /* Flush source dataset */ + if(H5D__flush_real(storage->list[i].source_dset.dset, dxpl_id) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_READERROR, FAIL, "unable to write to source dataset") + +done: + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5D__virtual_flush() */ + |