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authorAllen Byrne <byrn@hdfgroup.org>2020-10-01 15:29:53 (GMT)
committerAllen Byrne <byrn@hdfgroup.org>2020-10-01 15:29:53 (GMT)
commitec8ad09125032c9c232878d02e90aa86df162841 (patch)
tree5d63105d3a0db7d5bbee41c5b74b097649a2115e /examples/h5_vds.c
parent453238e90e1574ef1c15e3c79f7fb3d77920e77c (diff)
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Source formatted
Diffstat (limited to 'examples/h5_vds.c')
-rw-r--r--examples/h5_vds.c217
1 files changed, 102 insertions, 115 deletions
diff --git a/examples/h5_vds.c b/examples/h5_vds.c
index cce7b88..ad262f7 100644
--- a/examples/h5_vds.c
+++ b/examples/h5_vds.c
@@ -35,88 +35,74 @@
#include <stdio.h>
#include <stdlib.h>
-#define FILE "vds.h5"
-#define DATASET "VDS"
-#define VDSDIM1 6
-#define VDSDIM0 4
-#define DIM0 6
-#define RANK1 1
-#define RANK2 2
-
-const char *SRC_FILE[] = {
- "a.h5",
- "b.h5",
- "c.h5"
-};
-
-const char *SRC_DATASET[] = {
- "A",
- "B",
- "C"
-};
+#define FILE "vds.h5"
+#define DATASET "VDS"
+#define VDSDIM1 6
+#define VDSDIM0 4
+#define DIM0 6
+#define RANK1 1
+#define RANK2 2
+
+const char *SRC_FILE[] = {"a.h5", "b.h5", "c.h5"};
+
+const char *SRC_DATASET[] = {"A", "B", "C"};
int
-main (void)
+main(void)
{
- hid_t file, space, src_space, vspace, dset; /* Handles */
- hid_t dcpl;
- herr_t status;
- hsize_t vdsdims[2] = {VDSDIM0, VDSDIM1}, /* Virtual datasets dimension */
- dims[1] = {DIM0}, /* Source datasets dimensions */
- start[2], /* Hyperslab parameters */
- stride[2],
- count[2],
- block[2];
- hsize_t start_out[2],
- stride_out[2],
- count_out[2],
- block_out[2];
- int wdata[DIM0], /* Write buffer for source dataset */
- rdata[VDSDIM0][VDSDIM1], /* Read buffer for virtual dataset */
- i, j, k, l;
- int fill_value = -1; /* Fill value for VDS */
- H5D_layout_t layout; /* Storage layout */
- size_t num_map; /* Number of mappings */
- ssize_t len; /* Length of the string; also a return value */
- char *filename;
- char *dsetname;
+ hid_t file, space, src_space, vspace, dset; /* Handles */
+ hid_t dcpl;
+ herr_t status;
+ hsize_t vdsdims[2] = {VDSDIM0, VDSDIM1}, /* Virtual datasets dimension */
+ dims[1] = {DIM0}, /* Source datasets dimensions */
+ start[2], /* Hyperslab parameters */
+ stride[2], count[2], block[2];
+ hsize_t start_out[2], stride_out[2], count_out[2], block_out[2];
+ int wdata[DIM0], /* Write buffer for source dataset */
+ rdata[VDSDIM0][VDSDIM1], /* Read buffer for virtual dataset */
+ i, j, k, l;
+ int fill_value = -1; /* Fill value for VDS */
+ H5D_layout_t layout; /* Storage layout */
+ size_t num_map; /* Number of mappings */
+ ssize_t len; /* Length of the string; also a return value */
+ char * filename;
+ char * dsetname;
hsize_t nblocks;
- hsize_t *buf; /* Buffer to hold hyperslab coordinates */
+ hsize_t * buf; /* Buffer to hold hyperslab coordinates */
/*
* Create source files and datasets. This step is optional.
*/
- for (i=0; i < 3; i++) {
+ for (i = 0; i < 3; i++) {
/*
* Initialize data for i-th source dataset.
*/
- for (j = 0; j < DIM0; j++) wdata[j] = i+1;
+ for (j = 0; j < DIM0; j++)
+ wdata[j] = i + 1;
/*
* Create the source files and datasets. Write data to each dataset and
* close all resources.
*/
- file = H5Fcreate (SRC_FILE[i], H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
- space = H5Screate_simple (RANK1, dims, NULL);
- dset = H5Dcreate2 (file, SRC_DATASET[i], H5T_NATIVE_INT, space, H5P_DEFAULT,
- H5P_DEFAULT, H5P_DEFAULT);
- status = H5Dwrite (dset, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT,
- wdata);
- status = H5Sclose (space);
- status = H5Dclose (dset);
- status = H5Fclose (file);
+ file = H5Fcreate(SRC_FILE[i], H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+ space = H5Screate_simple(RANK1, dims, NULL);
+ dset = H5Dcreate2(file, SRC_DATASET[i], H5T_NATIVE_INT, space, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
+ status = H5Dwrite(dset, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, wdata);
+ status = H5Sclose(space);
+ 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);
+ file = H5Fcreate(FILE, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
/* Create VDS dataspace. */
- space = H5Screate_simple (RANK2, vdsdims, NULL);
+ space = H5Screate_simple(RANK2, vdsdims, NULL);
/* Set VDS creation property. */
- dcpl = H5Pcreate (H5P_DATASET_CREATE);
- status = H5Pset_fill_value (dcpl, H5T_NATIVE_INT, &fill_value);
+ dcpl = H5Pcreate(H5P_DATASET_CREATE);
+ status = H5Pset_fill_value(dcpl, H5T_NATIVE_INT, &fill_value);
/* Initialize hyperslab values. */
start[0] = 0;
@@ -132,21 +118,20 @@ main (void)
* 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);
+ 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_hyperslab(space, H5S_SELECT_SET, start, NULL, count, block);
+ status = H5Pset_virtual(dcpl, space, SRC_FILE[i], SRC_DATASET[i], src_space);
}
/* Create a virtual dataset. */
- dset = H5Dcreate2 (file, DATASET, H5T_NATIVE_INT, space, H5P_DEFAULT,
- dcpl, H5P_DEFAULT);
- status = H5Sclose (space);
- status = H5Sclose (src_space);
- status = H5Dclose (dset);
- status = H5Fclose (file);
+ dset = H5Dcreate2(file, DATASET, H5T_NATIVE_INT, space, H5P_DEFAULT, dcpl, H5P_DEFAULT);
+ status = H5Sclose(space);
+ status = H5Sclose(src_space);
+ status = H5Dclose(dset);
+ status = H5Fclose(file);
/*
* Now we begin the read section of this example.
@@ -155,80 +140,84 @@ main (void)
/*
* Open the file and virtual dataset.
*/
- file = H5Fopen (FILE, H5F_ACC_RDONLY, H5P_DEFAULT);
- dset = H5Dopen2 (file, DATASET, H5P_DEFAULT);
+ file = H5Fopen(FILE, H5F_ACC_RDONLY, H5P_DEFAULT);
+ dset = H5Dopen2(file, DATASET, H5P_DEFAULT);
/*
* Get creation property list and mapping properties.
*/
- dcpl = H5Dget_create_plist (dset);
+ dcpl = H5Dget_create_plist(dset);
/*
* Get storage layout.
*/
- layout = H5Pget_layout (dcpl);
+ layout = H5Pget_layout(dcpl);
if (H5D_VIRTUAL == layout)
printf(" Dataset has a virtual layout \n");
else
printf(" Wrong layout found \n");
- /*
- * Find the number of mappings.
- */
- status = H5Pget_virtual_count (dcpl, &num_map);
- printf(" Number of mappings is %lu\n", (unsigned long)num_map);
+ /*
+ * Find the number of mappings.
+ */
+ status = H5Pget_virtual_count(dcpl, &num_map);
+ printf(" Number of mappings is %lu\n", (unsigned long)num_map);
- /*
- * Get mapping parameters for each mapping.
- */
+ /*
+ * Get mapping parameters for each mapping.
+ */
for (i = 0; i < (int)num_map; i++) {
printf(" Mapping %d \n", i);
printf(" Selection in the virtual dataset ");
/* Get selection in the virttual dataset */
- vspace = H5Pget_virtual_vspace (dcpl, (size_t)i);
+ vspace = H5Pget_virtual_vspace(dcpl, (size_t)i);
/* Make sure that this is a hyperslab selection and then print information. */
if (H5Sget_select_type(vspace) == H5S_SEL_HYPERSLABS) {
- nblocks = H5Sget_select_hyper_nblocks (vspace);
- buf = (hsize_t *)malloc(sizeof(hsize_t)*2*RANK2*nblocks);
- status = H5Sget_select_hyper_blocklist (vspace, (hsize_t)0, nblocks, buf);
- for (l=0; l<nblocks; l++) {
+ nblocks = H5Sget_select_hyper_nblocks(vspace);
+ buf = (hsize_t *)malloc(sizeof(hsize_t) * 2 * RANK2 * nblocks);
+ 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++)
+ 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]);
+ for (k = 0; k < RANK2 - 1; k++)
+ printf("%d,", (int)buf[RANK2 + k]);
+ printf("%d)\n", (int)buf[RANK2 + k]);
}
- /* We also can use new APIs to get start, stride, count and block */
+ /* We also can use new APIs to get start, stride, count and block */
if (H5Sis_regular_hyperslab(vspace)) {
- status = H5Sget_regular_hyperslab (vspace, start_out, stride_out, count_out, block_out);
- printf(" start = [%llu, %llu] \n", (unsigned long long)start_out[0], (unsigned long long)start_out[1]);
- printf(" stride = [%llu, %llu] \n", (unsigned long long)stride_out[0], (unsigned long long)stride_out[1]);
- printf(" count = [%llu, %llu] \n", (unsigned long long)count_out[0], (unsigned long long)count_out[1]);
- printf(" block = [%llu, %llu] \n", (unsigned long long)block_out[0], (unsigned long long)block_out[1]);
+ status = H5Sget_regular_hyperslab(vspace, start_out, stride_out, count_out, block_out);
+ printf(" start = [%llu, %llu] \n", (unsigned long long)start_out[0],
+ (unsigned long long)start_out[1]);
+ printf(" stride = [%llu, %llu] \n", (unsigned long long)stride_out[0],
+ (unsigned long long)stride_out[1]);
+ printf(" count = [%llu, %llu] \n", (unsigned long long)count_out[0],
+ (unsigned long long)count_out[1]);
+ printf(" block = [%llu, %llu] \n", (unsigned long long)block_out[0],
+ (unsigned long long)block_out[1]);
}
}
/* Get source file name. */
- len = H5Pget_virtual_filename (dcpl, (size_t)i, NULL, 0);
- filename = (char *)malloc((size_t)len*sizeof(char)+1);
- H5Pget_virtual_filename (dcpl, (size_t)i, filename, len+1);
+ len = H5Pget_virtual_filename(dcpl, (size_t)i, NULL, 0);
+ filename = (char *)malloc((size_t)len * sizeof(char) + 1);
+ H5Pget_virtual_filename(dcpl, (size_t)i, filename, len + 1);
printf(" Source filename %s\n", filename);
/* Get source dataset name. */
- len = H5Pget_virtual_dsetname (dcpl, (size_t)i, NULL, 0);
- dsetname = (char *)malloc((size_t)len*sizeof(char)+1);
- H5Pget_virtual_dsetname (dcpl, (size_t)i, dsetname, len+1);
+ len = H5Pget_virtual_dsetname(dcpl, (size_t)i, NULL, 0);
+ dsetname = (char *)malloc((size_t)len * sizeof(char) + 1);
+ H5Pget_virtual_dsetname(dcpl, (size_t)i, dsetname, len + 1);
printf(" Source dataset name %s\n", dsetname);
/* Get selection in the source dataset. */
printf(" Selection in the source dataset ");
- src_space = H5Pget_virtual_srcspace (dcpl, (size_t)i);
+ src_space = H5Pget_virtual_srcspace(dcpl, (size_t)i);
/* Make sure it is ALL selection and then print the coordinates. */
- if(H5Sget_select_type(src_space) == H5S_SEL_ALL) {
- printf("(0) - (%d) \n", DIM0-1);
+ if (H5Sget_select_type(src_space) == H5S_SEL_ALL) {
+ printf("(0) - (%d) \n", DIM0 - 1);
}
H5Sclose(vspace);
H5Sclose(src_space);
@@ -240,26 +229,24 @@ main (void)
/*
* Read the data using the default properties.
*/
- status = H5Dread (dset, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT,
- rdata[0]);
+ status = H5Dread(dset, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, rdata[0]);
/*
* Output the data to the screen.
*/
- printf (" VDS Data:\n");
- for (i=0; i<VDSDIM0; i++) {
- printf (" [");
- for (j=0; j<VDSDIM1; j++)
- printf (" %3d", rdata[i][j]);
- printf ("]\n");
+ printf(" VDS Data:\n");
+ for (i = 0; i < VDSDIM0; i++) {
+ printf(" [");
+ for (j = 0; j < VDSDIM1; j++)
+ printf(" %3d", rdata[i][j]);
+ printf("]\n");
}
/*
* Close and release resources.
*/
- status = H5Pclose (dcpl);
- status = H5Dclose (dset);
- status = H5Fclose (file);
+ status = H5Pclose(dcpl);
+ status = H5Dclose(dset);
+ status = H5Fclose(file);
return 0;
}
-