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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, attr = -1, fapl = -1;
int buf[4][6];
int i, j;
H5VL_daosm_snap_id_t snap_id;
(void)MPI_Init(&argc, &argv);
/* Seed random number generator */
srand(time(NULL));
if(argc < 5 || argc > 6)
PRINTF_ERROR("argc must be 5 or 6\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 == 6) {
snap_id = (H5VL_daosm_snap_id_t)atoi(argv[5]);
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_RDONLY, fapl)) < 0)
ERROR;
/* Open attribute */
if((attr = H5Aopen_by_name(file, argv[3], argv[4], H5P_DEFAULT, H5P_DEFAULT)) < 0)
ERROR;
printf("Reading attribute\n");
/* Initialize buffer */
for(i = 0; i < 4; i++)
for(j = 0; j < 6; j++)
buf[i][j] = -1;
/* Read data */
if(H5Aread(attr, H5T_NATIVE_INT, buf) < 0)
ERROR;
/* Print buffer */
printf("Successfully read data. Buffer is:\n");
for(i = 0; i < 4; i++) {
for(j = 0; j < 6; j++)
printf("%d ", buf[i][j]);
printf("\n");
}
/* Close */
if(H5Aclose(attr) < 0)
ERROR;
if(H5Fclose(file) < 0)
ERROR;
if(H5Pclose(fapl) < 0)
ERROR;
printf("Success\n");
(void)MPI_Finalize();
return 0;
error:
H5E_BEGIN_TRY {
H5Aclose(attr);
H5Fclose(file);
H5Pclose(fapl);
} H5E_END_TRY;
(void)MPI_Finalize();
return 1;
}
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