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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright by The HDF Group. *
* Copyright by the Board of Trustees of the University of Illinois. *
* 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:
* VDSINC
*/
/****************/
/* Module Setup */
/****************/
#define H5D_PACKAGE /* Suppress error about including H5Dpkg */
/***********/
/* Headers */
/***********/
#include "H5private.h" /* Generic Functions */
#include "H5Dpkg.h" /* Dataset functions */
#include "H5Eprivate.h" /* Error handling */
#include "H5Fprivate.h" /* Files */
#include "H5HGprivate.h" /* Global Heaps */
#include "H5MMprivate.h" /* Memory management */
#include "H5Oprivate.h" /* Object headers */
#include "H5Sprivate.h" /* Dataspaces */
/****************/
/* Local Macros */
/****************/
/******************/
/* Local Typedefs */
/******************/
/********************/
/* Local Prototypes */
/********************/
/* Layout operation callbacks */
static herr_t H5D__virtual_construct(H5F_t *f, H5D_t *dset);
static herr_t H5D__virtual_io_init(const 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 *cm);
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);
/*********************/
/* Package Variables */
/*********************/
/* Contiguous storage layout I/O ops */
const H5D_layout_ops_t H5D_LOPS_VIRTUAL[1] = {{
H5D__virtual_construct,
NULL,
H5D__virtual_is_space_alloc,
H5D__virtual_io_init,
H5D__virtual_read,
H5D__virtual_write,
#ifdef H5_HAVE_PARALLEL
H5D__virtual_collective_read, //VDSINC
H5D__virtual_collective_write, //VDSINC
#endif /* H5_HAVE_PARALLEL */
NULL,
NULL,
H5D__virtual_flush,
NULL
}};
/*******************/
/* Local Variables */
/*******************/
/*-------------------------------------------------------------------------
* 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;
size_t i;
herr_t ret_value = SUCCEED;
FUNC_ENTER_PACKAGE
HDassert(layout);
HDassert(layout->type == H5D_VIRTUAL);
if(layout->storage.u.virt.list_nused > 0) {
HDassert(layout->storage.u.virt.list);
/* Save original entry list for use as the "source" */
orig_list = layout->storage.u.virt.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_NOSPACE, 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 */
for(i = 0; i < layout->storage.u.virt.list_nused; i++) {
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")
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")
if(NULL == (layout->storage.u.virt.list[i].virtual_select
= H5S_copy(orig_list[i].virtual_select, FALSE, TRUE)))
HGOTO_ERROR(H5E_DATASET, H5E_CANTCOPY, FAIL, "unable to copy virtual selection")
} /* end for */
} /* end if */
else {
HDassert(0 && "checking code coverage...");//VDSINC
/* 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 */
done:
/* Release allocated resources on failure */
if((ret_value < 0) && orig_list
&& (orig_list != layout->storage.u.virt.list))
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;
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. */
for(i = 0; i < layout->storage.u.virt.list_nused; i++) {
layout->storage.u.virt.list[i].source_file_name = (char *)H5MM_xfree(layout->storage.u.virt.list[i].source_file_name);
layout->storage.u.virt.list[i].source_dset_name = (char *)H5MM_xfree(layout->storage.u.virt.list[i].source_dset_name);
if(layout->storage.u.virt.list[i].source_select
&& H5S_close(layout->storage.u.virt.list[i].source_select) < 0)
HDONE_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "unable to release source selection")
layout->storage.u.virt.list[i].source_select = NULL;
if(layout->storage.u.virt.list[i].virtual_select
&& H5S_close(layout->storage.u.virt.list[i].virtual_select) < 0)
HDONE_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "unable to release virtual selection")
layout->storage.u.virt.list[i].virtual_select = NULL;
/* Close dataset here? VDSINC */
} /* end for */
/* Free the list */
layout->storage.u.virt.list = (H5O_storage_virtual_ent_t *)H5MM_xfree(layout->storage.u.virt.list);
/* 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_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)
{
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI(FAIL)
/* check args */
HDassert(f);
HDassert(storage);
HDassert(storage->type == H5D_VIRTUAL);
/* Need to add stuff for private data here VDSINC */
/* 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_WRITEERROR, FAIL, "Unable to remove heap object")
/* 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_construct
*
* Purpose: Constructs new virtual layout information for dataset
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Neil Fortner
* Monday, February 2, 2015
*
*-------------------------------------------------------------------------
*/
static herr_t
H5D__virtual_construct(H5F_t UNUSED *f, H5D_t UNUSED *dset)
{
FUNC_ENTER_STATIC_NOERR
/* No-op for now VDSINC */
FUNC_LEAVE_NOAPI(SUCCEED)
} /* end H5D__virtual_construct() */
/*-------------------------------------------------------------------------
* 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 *storage)
{
hbool_t ret_value; /* Return value */
FUNC_ENTER_PACKAGE_NOERR
/* Need to decide what to do here. For now just return TRUE if the global
* heap block has been allocated. VDSINC */
ret_value = storage->u.virt.serial_list_hobjid.addr != HADDR_UNDEF;
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5D__virtual_is_space_alloc() */
/*-------------------------------------------------------------------------
* Function: H5D__virtual_io_init
*
* Purpose: Performs initialization before any sort of I/O on the raw data
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Neil Fortner
* February 6, 2015
*
*-------------------------------------------------------------------------
*/
static herr_t
H5D__virtual_io_init(const H5D_io_info_t UNUSED *io_info, const H5D_type_info_t UNUSED *type_info,
hsize_t UNUSED nelmts, const H5S_t UNUSED *file_space, const H5S_t UNUSED *mem_space,
H5D_chunk_map_t UNUSED *cm)
{
FUNC_ENTER_STATIC_NOERR
HDassert(0 && "Not yet implemented...");//VDSINC
FUNC_LEAVE_NOAPI(SUCCEED)
} /* end H5D__virtual_io_init() */
/*-------------------------------------------------------------------------
* Function: H5D__virtual_read
*
* Purpose: Read from a virtual dataset.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Neil Fortner
* February 6, 2015
*
*-------------------------------------------------------------------------
*/
herr_t
H5D__virtual_read(H5D_io_info_t UNUSED *io_info, const H5D_type_info_t UNUSED *type_info,
hsize_t UNUSED nelmts, const H5S_t UNUSED *file_space, const H5S_t UNUSED *mem_space,
H5D_chunk_map_t UNUSED *fm)
{
FUNC_ENTER_PACKAGE_NOERR
HDassert(0 && "Not yet implemented...");//VDSINC
FUNC_LEAVE_NOAPI(SUCCEED)
} /* end H5D__virtual_read() */
/*-------------------------------------------------------------------------
* Function: H5D__virtual_write
*
* Purpose: Write to a virtual dataset.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Neil Fortner
* February 6, 2015
*
*-------------------------------------------------------------------------
*/
herr_t
H5D__virtual_write(H5D_io_info_t UNUSED *io_info, const H5D_type_info_t UNUSED *type_info,
hsize_t UNUSED nelmts, const H5S_t UNUSED *file_space, const H5S_t UNUSED *mem_space,
H5D_chunk_map_t UNUSED *fm)
{
FUNC_ENTER_PACKAGE_NOERR
HDassert(0 && "Not yet implemented...");//VDSINC
FUNC_LEAVE_NOAPI(SUCCEED)
} /* 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 UNUSED *dset, hid_t UNUSED dxpl_id)
{
FUNC_ENTER_STATIC_NOERR
/* No-op for now VDSINC */
FUNC_LEAVE_NOAPI(SUCCEED)
} /* end H5D__virtual_flush() */
/*-------------------------------------------------------------------------
* 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 UNUSED *f_src, const H5O_storage_virtual_t UNUSED *storage_src,
H5F_t UNUSED *f_dst, H5O_storage_virtual_t UNUSED *storage_dst, H5T_t UNUSED *dt_src,
H5O_copy_t UNUSED *cpy_info, hid_t UNUSED dxpl_id)
{
FUNC_ENTER_PACKAGE_NOERR
HDassert(0 && "Not yet implemented...");//VDSINC
FUNC_LEAVE_NOAPI(SUCCEED)
} /* end H5D__virtual_copy() */
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