Initial implementation of dataset reads and writes. Untested. Does not

support partial I/O or datatype conversions. Also added h5dsm examples.

1 files changed, 83 insertions, 0 deletions

diff --git a/examples/h5dsm_dset_write.c b/examples/h5dsm_dset_write.c
new file mode 100644
index 0000000..a49265d
--- /dev/null
+++ b/examples/h5dsm_dset_write.c
@@ -0,0 +1,83 @@
+#include "h5dsm_example.h"
+#include <time.h>
+
+int main(int argc, char *argv[]) {
+    uuid_t pool_uuid;
+    char *pool_grp = "daos_tier0";
+    hid_t file = -1, dset = -1, trans = -1, fapl = -1;
+    int buf[4][6];
+    int i, j;
+
+    (void)MPI_Init(&argc, &argv);
+    (void)daos_init();
+
+    /* Seed random number generator */
+    srand(time(NULL));
+
+    if(argc != 4)
+        PRINTF_ERROR("argc != 4\n");
+
+    /* Parse UUID */
+    if(0 != uuid_parse(argv[1], pool_uuid))
+        ERROR;
+
+    /* Set up FAPL */
+    if((fapl = H5Pcreate(H5P_FILE_ACCESS)) < 0)
+        ERROR;
+    if(H5Pset_fapl_daosm(fapl, MPI_COMM_WORLD, MPI_INFO_NULL, pool_uuid, pool_grp) < 0)
+        ERROR;
+
+    /* Open file */
+    if((file = H5Fopen_ff(argv[2], H5F_ACC_RDWR, fapl, &trans)) < 0)
+        ERROR;
+
+    /* Open dataset */
+    if((dset = H5Dopen_ff(file, argv[3], H5P_DEFAULT, trans)) < 0)
+        ERROR;
+
+    /* Fill and print buffer */
+    printf("Writing data. Buffer is:\n");
+    for(i = 0; i < 4; i++) {
+        for(j = 0; j < 6; j++) {
+            buf[i][j] = rand() % 10;
+            printf("%d ", buf[i][j]);
+        }
+        printf("\n");
+    }
+
+    /* Write data */
+    if(H5Dwrite_ff(dset, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, buf) < 0)
+        ERROR;
+
+    /* Close */
+    if(H5Dclose_ff(dset, -1) < 0)
+        ERROR;
+    if(H5TRclose(trans) < 0)
+        ERROR;
+    if(H5Fclose(file) < 0)
+        ERROR;
+    if(H5Sclose(space) < 0)
+        ERROR;
+    if(H5Pclose(fapl) < 0)
+        ERROR;
+
+    printf("Success\n");
+
+    (void)daos_fini();
+    (void)MPI_Finalize();
+    return 0;
+
+error:
+    H5E_BEGIN_TRY {
+        H5Dclose_ff(dset, -1);
+        H5TRclose(trans);
+        H5Fclose(file);
+        H5Sclose(space);
+        H5Pclose(fapl);
+    } H5E_END_TRY;
+
+    (void)daos_fini();
+    (void)MPI_Finalize();
+    return 1;
+}
+