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authorQuincey Koziol <koziol@hdfgroup.org>2008-06-03 20:34:58 (GMT)
committerQuincey Koziol <koziol@hdfgroup.org>2008-06-03 20:34:58 (GMT)
commit79380c228cb804bb7ed9bb1ac7b3f36706719c20 (patch)
tree24e7905fd80682e481e5ab9b342dd20862095f01 /src/H5Dcontig.c
parenta9fa9a4a3715b8bd0dce83911548b88f30329c62 (diff)
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[svn-r15132] Description:
Bring back revision 15131 from trunk: Finish omnibus chunked dataset I/O refactoring, to separate general actions on chunked datasets from actions that are specific to using the v1 B-tree index. Cleaned up a few bugs and added some additional tests also. Tested on: Mac OS X/32 10.5.3 (amazon) Linux/32 2.4 (chicago)
Diffstat (limited to 'src/H5Dcontig.c')
-rw-r--r--src/H5Dcontig.c70
1 files changed, 65 insertions, 5 deletions
diff --git a/src/H5Dcontig.c b/src/H5Dcontig.c
index 1a3fda5..14ad520 100644
--- a/src/H5Dcontig.c
+++ b/src/H5Dcontig.c
@@ -61,6 +61,8 @@
/********************/
/* Layout operation callbacks */
+static herr_t H5D_contig_new(H5F_t *f, hid_t dxpl_id, H5D_t *dset,
+ const H5P_genplist_t *dc_plist);
static herr_t H5D_contig_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);
@@ -76,6 +78,7 @@ static herr_t H5D_contig_write_one(H5D_io_info_t *io_info, hsize_t offset,
/* Contiguous storage layout I/O ops */
const H5D_layout_ops_t H5D_LOPS_CONTIG[1] = {{
+ H5D_contig_new,
H5D_contig_io_init,
H5D_contig_read,
H5D_contig_write,
@@ -102,7 +105,7 @@ H5FL_BLK_EXTERN(type_conv);
/*-------------------------------------------------------------------------
- * Function: H5D_contig_create
+ * Function: H5D_contig_alloc
*
* Purpose: Allocate file space for a contiguously stored dataset
*
@@ -114,11 +117,11 @@ H5FL_BLK_EXTERN(type_conv);
*-------------------------------------------------------------------------
*/
herr_t
-H5D_contig_create(H5F_t *f, hid_t dxpl_id, H5O_layout_t *layout /*out */ )
+H5D_contig_alloc(H5F_t *f, hid_t dxpl_id, H5O_layout_t *layout /*out */ )
{
herr_t ret_value = SUCCEED; /* Return value */
- FUNC_ENTER_NOAPI(H5D_contig_create, FAIL)
+ FUNC_ENTER_NOAPI(H5D_contig_alloc, FAIL)
/* check args */
HDassert(f);
@@ -130,7 +133,7 @@ H5D_contig_create(H5F_t *f, hid_t dxpl_id, H5O_layout_t *layout /*out */ )
done:
FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5D_contig_create */
+} /* end H5D_contig_alloc */
/*-------------------------------------------------------------------------
@@ -355,6 +358,63 @@ H5D_contig_get_addr(const H5D_t *dset)
/*-------------------------------------------------------------------------
+ * Function: H5D_contig_new
+ *
+ * Purpose: Constructs new contiguous layout information for dataset
+ *
+ * Return: Non-negative on success/Negative on failure
+ *
+ * Programmer: Quincey Koziol
+ * Thursday, May 22, 2008
+ *
+ *-------------------------------------------------------------------------
+ */
+/* ARGSUSED */
+static herr_t
+H5D_contig_new(H5F_t *f, hid_t UNUSED dxpl_id, H5D_t *dset,
+ const H5P_genplist_t UNUSED *dc_plist)
+{
+ const H5T_t *type = dset->shared->type; /* Convenience pointer to dataset's datatype */
+ hssize_t tmp_size; /* Temporary holder for raw data size */
+ hsize_t dim[H5O_LAYOUT_NDIMS]; /* Current size of data in elements */
+ hsize_t max_dim[H5O_LAYOUT_NDIMS]; /* Maximum size of data in elements */
+ int ndims; /* Rank of dataspace */
+ int i; /* Local index variable */
+ herr_t ret_value = SUCCEED; /* Return value */
+
+ FUNC_ENTER_NOAPI_NOINIT(H5D_contig_new)
+
+ /* Sanity checks */
+ HDassert(f);
+ HDassert(dset);
+
+ /*
+ * The maximum size of the dataset cannot exceed the storage size.
+ * Also, only the slowest varying dimension of a simple data space
+ * can be extendible (currently only for external data storage).
+ */
+ dset->shared->layout.u.contig.addr = HADDR_UNDEF; /* Initialize to no address */
+
+ /* Check for invalid dataset dimensions */
+ if((ndims = H5S_get_simple_extent_dims(dset->shared->space, dim, max_dim)) < 0)
+ HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to initialize contiguous storage")
+ for(i = 0; i < ndims; i++)
+ if(max_dim[i] > dim[i])
+ HGOTO_ERROR(H5E_DATASET, H5E_UNSUPPORTED, FAIL, "extendible contiguous non-external dataset")
+
+ /* Compute the total size of dataset */
+ tmp_size = H5S_GET_EXTENT_NPOINTS(dset->shared->space) * H5T_get_size(type);
+ H5_ASSIGN_OVERFLOW(dset->shared->layout.u.contig.size, tmp_size, hssize_t, hsize_t);
+
+ /* Get the sieve buffer size for this dataset */
+ dset->shared->cache.contig.sieve_buf_size = H5F_SIEVE_BUF_SIZE(f);
+
+done:
+ FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5D_contig_new() */
+
+
+/*-------------------------------------------------------------------------
* Function: H5D_contig_io_init
*
* Purpose: Performs initialization before any sort of I/O on the raw data
@@ -1137,7 +1197,7 @@ H5D_contig_copy(H5F_t *f_src, const H5O_layout_t *layout_src, H5F_t *f_dst,
HDassert(dt_src);
/* Allocate space for destination raw data */
- if(H5D_contig_create(f_dst, dxpl_id, layout_dst) < 0)
+ if(H5D_contig_alloc(f_dst, dxpl_id, layout_dst) < 0)
HGOTO_ERROR(H5E_IO, H5E_CANTINIT, FAIL, "unable to allocate contiguous storage")
/* Set up number of bytes to copy, and initial buffer size */