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-rw-r--r--src/H5Pdcpl.c104
1 files changed, 104 insertions, 0 deletions
diff --git a/src/H5Pdcpl.c b/src/H5Pdcpl.c
index a5a16bb..b85f105 100644
--- a/src/H5Pdcpl.c
+++ b/src/H5Pdcpl.c
@@ -117,6 +117,11 @@
#define H5D_CRT_EXT_FILE_LIST_COPY H5P__dcrt_ext_file_list_copy
#define H5D_CRT_EXT_FILE_LIST_CMP H5P__dcrt_ext_file_list_cmp
#define H5D_CRT_EXT_FILE_LIST_CLOSE H5P__dcrt_ext_file_list_close
+/* Definitions for dataset object header minimization */
+#define H5D_CRT_MIN_DSET_HDR_SIZE_SIZE sizeof(hbool_t)
+#define H5D_CRT_MIN_DSET_HDR_SIZE_DEF FALSE
+#define H5D_CRT_MIN_DSET_HDR_SIZE_ENC H5P__encode_hbool_t
+#define H5D_CRT_MIN_DSET_HDR_SIZE_DEC H5P__decode_hbool_t
/******************/
@@ -209,6 +214,7 @@ static const H5O_layout_t H5D_def_layout_g = H5D_CRT_LAYOUT_DEF; /* Defau
static const H5O_fill_t H5D_def_fill_g = H5D_CRT_FILL_VALUE_DEF; /* Default fill value */
static const unsigned H5D_def_alloc_time_state_g = H5D_CRT_ALLOC_TIME_STATE_DEF; /* Default allocation time state */
static const H5O_efl_t H5D_def_efl_g = H5D_CRT_EXT_FILE_LIST_DEF; /* Default external file list */
+static const unsigned H5O_ohdr_min_g = H5D_CRT_MIN_DSET_HDR_SIZE_DEF; /* Default object header minimization */
/* Defaults for each type of layout */
#ifdef H5_HAVE_C99_DESIGNATED_INITIALIZER
@@ -271,6 +277,12 @@ H5P__dcrt_reg_prop(H5P_genclass_t *pclass)
H5D_CRT_EXT_FILE_LIST_DEL, H5D_CRT_EXT_FILE_LIST_COPY, H5D_CRT_EXT_FILE_LIST_CMP, H5D_CRT_EXT_FILE_LIST_CLOSE) < 0)
HGOTO_ERROR(H5E_PLIST, H5E_CANTINSERT, FAIL, "can't insert property into class")
+ /* Register the object header minimization property */
+ if(H5P__register_real(pclass, H5D_CRT_MIN_DSET_HDR_SIZE_NAME, H5D_CRT_MIN_DSET_HDR_SIZE_SIZE, &H5O_ohdr_min_g,
+ NULL, NULL, NULL, H5D_CRT_MIN_DSET_HDR_SIZE_ENC, H5D_CRT_MIN_DSET_HDR_SIZE_DEC,
+ NULL, NULL, NULL, NULL) < 0)
+ HGOTO_ERROR(H5E_PLIST, H5E_CANTINSERT, FAIL, "can't insert property into class")
+
/* Register the type ID property*/
if(H5P__register_real(pclass, H5VL_PROP_DSET_TYPE_ID, sizeof(hid_t), &type_id,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, H5P_ignore_cmp, NULL) < 0)
@@ -3749,3 +3761,95 @@ done:
FUNC_LEAVE_API(ret_value)
} /* end H5Pget_fill_time() */
+
+/*-----------------------------------------------------------------------------
+ * Function: H5Pget_dset_no_attrs_hint
+ *
+ * Purpose:
+ *
+ * Access the flag for whether or not datasets created by the given dcpl
+ * will be created with a "minimized" object header.
+ *
+ * Return:
+ *
+ * Failure: Negative value (FAIL)
+ * Success: Non-negative value (SUCCEED)
+ *
+ * Programmer: Jacob Smith
+ * 2018 August 14
+ *
+ * Modifications: None.
+ *
+ *-----------------------------------------------------------------------------
+ */
+herr_t
+H5Pget_dset_no_attrs_hint(hid_t dcpl_id, hbool_t *minimize)
+{
+ hbool_t setting = FALSE;
+ H5P_genplist_t *plist = NULL;
+ herr_t ret_value = SUCCEED;
+
+ FUNC_ENTER_API(FAIL)
+ H5TRACE2("e", "i*b", dcpl_id, minimize);
+
+ if(NULL == minimize)
+ HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "receiving pointer cannot be NULL")
+
+ plist = H5P_object_verify(dcpl_id, H5P_DATASET_CREATE);
+ if(NULL == plist)
+ HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, FAIL, "can't find object for ID")
+
+ if(H5P_peek(plist, H5D_CRT_MIN_DSET_HDR_SIZE_NAME, &setting) < 0)
+ HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't get dset oh minimize flag value")
+
+ *minimize = setting;
+
+done:
+ FUNC_LEAVE_API(ret_value)
+} /* H5Pget_dset_no_attrs_hint() */
+
+
+/*-----------------------------------------------------------------------------
+ * Function: H5Pset_dset_no_attrs_hint
+ *
+ * Purpose:
+ *
+ * Set the dcpl to minimize (or explicitly to not minimized) dataset object
+ * headers upon creation.
+ *
+ * Return:
+ *
+ * Failure: Negative value (FAIL)
+ * Success: Non-negative value (SUCCEED)
+ *
+ * Programmer: Jacob Smith
+ * 2018 August 14
+ *
+ * Modifications: None.
+ *
+ *-----------------------------------------------------------------------------
+ */
+herr_t
+H5Pset_dset_no_attrs_hint(hid_t dcpl_id, hbool_t minimize)
+{
+ H5P_genplist_t *plist = NULL;
+ hbool_t prev_set = FALSE;
+ herr_t ret_value = SUCCEED;
+
+ FUNC_ENTER_API(FAIL)
+ H5TRACE2("e", "ib", dcpl_id, minimize);
+
+ plist = H5P_object_verify(dcpl_id, H5P_DATASET_CREATE);
+ if(NULL == plist)
+ HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, FAIL, "can't find object for ID")
+
+ if(H5P_peek(plist, H5D_CRT_MIN_DSET_HDR_SIZE_NAME, &prev_set) < 0)
+ HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't get extant dset oh minimize flag value")
+
+ if(H5P_poke(plist, H5D_CRT_MIN_DSET_HDR_SIZE_NAME, &minimize) < 0)
+ HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't get dset oh minimize flag value")
+
+done:
+ FUNC_LEAVE_API(ret_value)
+} /* H5Pset_dset_no_attrs_hint() */
+