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-rw-r--r--src/H5Dcontig.c76
1 files changed, 75 insertions, 1 deletions
diff --git a/src/H5Dcontig.c b/src/H5Dcontig.c
index 29ab1ff..fb3ac85 100644
--- a/src/H5Dcontig.c
+++ b/src/H5Dcontig.c
@@ -96,6 +96,8 @@ typedef struct H5D_contig_writevv_ud_t {
/* Layout operation callbacks */
static herr_t H5D__contig_construct(H5F_t *f, H5D_t *dset);
+static herr_t H5D__contig_init(H5F_t *f, hid_t dxpl_id, const H5D_t *dset,
+ hid_t dapl_id);
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);
@@ -119,7 +121,7 @@ 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_construct,
- NULL,
+ H5D__contig_init,
H5D__contig_is_space_alloc,
H5D__contig_io_init,
H5D__contig_read,
@@ -451,6 +453,78 @@ done:
/*-------------------------------------------------------------------------
+ * Function: H5D__contig_init
+ *
+ * Purpose: Initialize the contiguous info for a dataset. This is
+ * called when the dataset is initialized.
+ *
+ * Return: Non-negative on success/Negative on failure
+ *
+ * Programmer: Quincey Koziol
+ * Friday, August 28, 2015
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5D__contig_init(H5F_t *f, hid_t dxpl_id, const H5D_t *dset, hid_t dapl_id)
+{
+ hsize_t tmp_size; /* Temporary holder for raw data size */
+ size_t tmp_sieve_buf_size; /* Temporary holder for sieve buffer size */
+ herr_t ret_value = SUCCEED; /* Return value */
+
+ FUNC_ENTER_STATIC
+
+ /* Sanity check */
+ HDassert(f);
+ HDassert(dset);
+
+ /* Compute the size of the contiguous storage for versions of the
+ * layout message less than version 3 because versions 1 & 2 would
+ * truncate the dimension sizes to 32-bits of information. - QAK 5/26/04
+ */
+ if(dset->shared->layout.version < 3) {
+ hssize_t snelmts; /* Temporary holder for number of elements in dataspace */
+ hsize_t nelmts; /* Number of elements in dataspace */
+ size_t dt_size; /* Size of datatype */
+
+ /* Retrieve the number of elements in the dataspace */
+ if((snelmts = H5S_GET_EXTENT_NPOINTS(dset->shared->space)) < 0)
+ HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "unable to retrieve number of elements in dataspace")
+ nelmts = (hsize_t)snelmts;
+
+ /* Get the datatype's size */
+ if(0 == (dt_size = H5T_GET_SIZE(dset->shared->type)))
+ HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "unable to retrieve size of datatype")
+
+ /* Compute the size of the dataset's contiguous storage */
+ tmp_size = nelmts * dt_size;
+
+ /* Check for overflow during multiplication */
+ if(nelmts != (tmp_size / dt_size))
+ HGOTO_ERROR(H5E_DATASET, H5E_OVERFLOW, FAIL, "size of dataset's storage overflowed")
+
+ /* Assign the dataset's contiguous storage size */
+ dset->shared->layout.storage.u.contig.size = tmp_size;
+ } /* end if */
+ else
+ tmp_size = dset->shared->layout.storage.u.contig.size;
+
+ /* Get the sieve buffer size for the file */
+ tmp_sieve_buf_size = H5F_SIEVE_BUF_SIZE(dset->oloc.file);
+
+ /* Adjust the sieve buffer size to the smaller one between the dataset size and the buffer size
+ * from the file access property. (SLU - 2012/3/30) */
+ if(tmp_size < tmp_sieve_buf_size)
+ dset->shared->cache.contig.sieve_buf_size = tmp_size;
+ else
+ dset->shared->cache.contig.sieve_buf_size = tmp_sieve_buf_size;
+
+done:
+ FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5D__contig_init() */
+
+
+/*-------------------------------------------------------------------------
* Function: H5D__contig_is_space_alloc
*
* Purpose: Query if space is allocated for layout