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#include "h5dsm_example.h"
#include <time.h>
int main(int argc, char *argv[]) {
uuid_t pool_uuid;
char *pool_grp = NULL;
hid_t file = -1, dset = -1, fapl = -1;
hid_t nfile = -1, ndset = -1;
hsize_t dims[1] = {256 * 1024};
int *buf = NULL, *nbuf = NULL;
H5VL_daosm_snap_id_t snap_id;
int i;
(void)MPI_Init(&argc, &argv);
/* Seed random number generator */
srand(time(NULL));
if(argc < 4 || argc > 5)
PRINTF_ERROR("argc must be 4 or 5\n");
/* Parse UUID */
if(0 != uuid_parse(argv[1], pool_uuid))
ERROR;
/* Initialize VOL */
if(H5VLdaosm_init(MPI_COMM_WORLD, pool_uuid, pool_grp) < 0)
ERROR;
/* Set up FAPL */
if((fapl = H5Pcreate(H5P_FILE_ACCESS)) < 0)
ERROR;
if(H5Pset_fapl_daosm(fapl, MPI_COMM_WORLD, MPI_INFO_NULL) < 0)
ERROR;
if(H5Pset_all_coll_metadata_ops(fapl, true) < 0)
ERROR;
/* Open snapshot if specified */
if(argc == 5) {
snap_id = (H5VL_daosm_snap_id_t)atoi(argv[4]);
printf("Opening snapshot %llu\n", (long long unsigned)snap_id);
if(H5Pset_daosm_snap_open(fapl, snap_id) < 0)
ERROR;
} /* end if */
/* Open file */
if((file = H5Fopen(argv[2], H5F_ACC_RDWR, fapl)) < 0)
ERROR;
/* Open native file */
if((nfile = H5Fopen(argv[2], H5F_ACC_RDWR, H5P_DEFAULT)) < 0)
ERROR;
/* Open dataset */
if((dset = H5Dopen2(file, argv[3], H5P_DEFAULT)) < 0)
ERROR;
/* Open native dataset */
if((ndset = H5Dopen2(nfile, argv[3], H5P_DEFAULT)) < 0)
ERROR;
/* Allocate buffers */
if(NULL == (buf = (int *)malloc(dims[0] * sizeof(int))))
ERROR;
if(NULL == (nbuf = (int *)malloc(dims[0] * sizeof(int))))
ERROR;
/* Read data */
printf("Reading daos-m dataset\n");
if(H5Dread(dset, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, buf) < 0)
ERROR;
/* Read native data */
printf("Reading native dataset\n");
if(H5Dread(ndset, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, nbuf) < 0)
ERROR;
/* Compare data */
if(memcmp(buf, nbuf, dims[0] * sizeof(int)))
PRINTF_ERROR("Buffers differ\n");
else
printf("Buffers are equal\n");
/* Close */
if(H5Dclose(dset) < 0)
ERROR;
if(H5Dclose(ndset) < 0)
ERROR;
if(H5Fclose(file) < 0)
ERROR;
if(H5Fclose(nfile) < 0)
ERROR;
if(H5Pclose(fapl) < 0)
ERROR;
free(buf);
buf = NULL;
free(nbuf);
nbuf = NULL;
printf("Success\n");
(void)MPI_Finalize();
return 0;
error:
H5E_BEGIN_TRY {
H5Dclose(dset);
H5Dclose(ndset);
H5Fclose(file);
H5Fclose(nfile);
H5Pclose(fapl);
} H5E_END_TRY;
free(buf);
free(nbuf);
(void)MPI_Finalize();
return 1;
}
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