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authorElena Pourmal <epourmal@hdfgroup.org>2015-02-25 04:19:41 (GMT)
committerElena Pourmal <epourmal@hdfgroup.org>2015-02-25 04:19:41 (GMT)
commit99a3f4d8d4ee1ec3f61a377c1a96a3fe35e9990a (patch)
tree78c194e22fe4ecd057f1f13c8562b91e824696fb /examples/h5_vds.c
parent2ca5b16a9fd79d240d5e4ebe4689033c6c7182ad (diff)
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[svn-r26297] Changed example and h5dump according to suggestions at today's code review VDS-176.
BNF has been updated too. Now h5dump displays VDS like this: HDF5 "vds.h5" { GROUP "/" { DATASET "VDS" { DATATYPE H5T_STD_I32LE DATASPACE SIMPLE { ( 4, 6 ) / ( 4, 6 ) } STORAGE_LAYOUT { VIRTUAL { HYPERSLAB { (0,0)-(0,5) }; a.h5; A; ALL; HYPERSLAB { (1,0)-(1,5) }; b.h5; B; ALL; HYPERSLAB { (2,0)-(2,5) }; c.h5; C; ALL; } } } FILTERS { ....... I just commented the code with "EIP" and didn't delete to simplify the review with Allen tomorrow. Tested on jam
Diffstat (limited to 'examples/h5_vds.c')
-rw-r--r--examples/h5_vds.c31
1 files changed, 14 insertions, 17 deletions
diff --git a/examples/h5_vds.c b/examples/h5_vds.c
index 4c8e1dd..dea2ee6 100644
--- a/examples/h5_vds.c
+++ b/examples/h5_vds.c
@@ -47,8 +47,8 @@ main (void)
hid_t file, space, src_space, vspace, dset; /* Handles */
hid_t dcpl;
herr_t status;
- hsize_t vdsdims[2] = {VDSDIM0, VDSDIM1}, /* Datasets dimension */
- dims[1] = {DIM0},
+ hsize_t vdsdims[2] = {VDSDIM0, VDSDIM1}, /* Virtual satasets dimension */
+ dims[1] = {DIM0}, /* Source datasets dimensions */
start[2], /* Hyperslab parameters */
stride[2],
count[2],
@@ -89,12 +89,12 @@ main (void)
status = H5Dclose (dset);
status = H5Fclose (file);
}
+
/* Create file in which virtual dataset will be stored. */
file = H5Fcreate (FILE, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
/* Create VDS dataspace. */
space = H5Screate_simple (RANK2, vdsdims, NULL);
- src_space = H5Screate_simple (RANK1, dims, NULL);
/* Set VDS creation property. */
dcpl = H5Pcreate (H5P_DATASET_CREATE);
@@ -110,16 +110,16 @@ main (void)
/*
* Build the mappings.
- *
- * Select the first, the second and the third rows and map each row to the data in the
- * corresponding source datasets.
+ * Selections in the source datasets are H5S_ALL.
+ * In the virtual dataset we select the first, the second and the third rows
+ * and map each row to the data in the corresponding source dataset.
*/
+ src_space = H5Screate_simple (RANK1, dims, NULL);
for (i = 0; i < 3; i++) {
start[0] = (hsize_t)i;
/* Select i-th row in the virtual dataset; selection in the source datasets is the same. */
status = H5Sselect_hyperslab (space, H5S_SELECT_SET, start, NULL, count, block);
status = H5Pset_virtual (dcpl, space, SRC_FILE[i], SRC_DATASET[i], src_space);
- status = H5Sselect_none (space);
}
/* Create a virtual dataset. */
@@ -176,14 +176,12 @@ main (void)
status = H5Sget_select_hyper_blocklist (vspace, (hsize_t)0, nblocks, buf);
for (l=0; l<nblocks; l++) {
printf("(");
- for (k=0; k<RANK2-1; k++) printf("%d,", (int)buf[k]);
- printf("%d", (int)buf[k]);
- printf(") - ");
- printf("(");
- for (k=0; k<RANK2-1; k++) printf("%d,", (int)buf[RANK2+k]);
- printf("%d", (int)buf[RANK2+k]);
- printf(")");
- printf ("\n");
+ for (k=0; k<RANK2-1; k++)
+ printf("%d,", (int)buf[k]);
+ printf("%d ) - (", (int)buf[k]);
+ for (k=0; k<RANK2-1; k++)
+ printf("%d,", (int)buf[RANK2+k]);
+ printf("%d)\n", (int)buf[RANK2+k]);
}
}
/* Get source file name. */
@@ -204,8 +202,7 @@ main (void)
/* Make sure it is ALL selection and then print the coordinates. */
if(H5Sget_select_type(src_space) == H5S_SEL_ALL) {
- printf("(0) - (%d)", DIM0-1);
- printf ("\n");
+ printf("(0) - (%d) \n", DIM0-1);
}
H5Sclose(vspace);
H5Sclose(src_space);