diff options
Diffstat (limited to 'src/H5CX.c')
| -rw-r--r-- | src/H5CX.c | 377 |
1 files changed, 350 insertions, 27 deletions
@@ -53,7 +53,7 @@ * each thread individually. The association of contexts to threads will * be handled by the pthread library. * - * In order for this macro to work, H5E__get_my_stack() must be preceeded + * In order for this macro to work, H5CX_get_my_context() must be preceeded * by "H5CX_node_t *ctx =". */ #define H5CX_get_my_context() H5CX__get_context() @@ -64,17 +64,22 @@ #define H5CX_get_my_context() (&H5CX_head_g) #endif /* H5_HAVE_THREADSAFE */ +/* Common macro for the retrieving the pointer to a property list */ +#define H5CX_RETRIEVE_PLIST(PL, FAILVAL) \ + /* Check if the property list is already available */ \ + if(NULL == (*head)->ctx.PL) \ + /* Get the property list pointer */ \ + if(NULL == ((*head)->ctx.PL = (H5P_genplist_t *)H5I_object((*head)->ctx.H5_GLUE(PL,_id)))) \ + HGOTO_ERROR(H5E_CONTEXT, H5E_BADTYPE, (FAILVAL), "can't get property list") + /* Common macro for the duplicated code to retrieve properties from a property list */ #define H5CX_RETRIEVE_PROP_COMMON(PL, DEF_PL, PROP_NAME, PROP_FIELD) \ /* Check for default property list */ \ if((*head)->ctx.H5_GLUE(PL,_id) == (DEF_PL)) \ - HDmemcpy(&(*head)->ctx.PROP_FIELD, &H5_GLUE3(H5CX_def_,PL,_cache).PROP_FIELD, sizeof(H5_GLUE3(H5CX_def_,PL,_cache).PROP_FIELD)); \ + H5MM_memcpy(&(*head)->ctx.PROP_FIELD, &H5_GLUE3(H5CX_def_,PL,_cache).PROP_FIELD, sizeof(H5_GLUE3(H5CX_def_,PL,_cache).PROP_FIELD)); \ else { \ - /* Check if the property list is already available */ \ - if(NULL == (*head)->ctx.PL) \ - /* Get the dataset transfer property list pointer */ \ - if(NULL == ((*head)->ctx.PL = (H5P_genplist_t *)H5I_object((*head)->ctx.H5_GLUE(PL,_id)))) \ - HGOTO_ERROR(H5E_CONTEXT, H5E_BADTYPE, FAIL, "can't get default dataset transfer property list") \ + /* Retrieve the property list */ \ + H5CX_RETRIEVE_PLIST(PL, FAIL) \ \ /* Get the property */ \ if(H5P_get((*head)->ctx.PL, (PROP_NAME), &(*head)->ctx.PROP_FIELD) < 0) \ @@ -108,11 +113,8 @@ \ /* Check if property exists in DXPL */ \ if(!(*head)->ctx.H5_GLUE(PROP_FIELD,_set)) { \ - /* Check if the property list is already available */ \ - if(NULL == (*head)->ctx.dxpl) \ - /* Get the dataset transfer property list pointer */ \ - if(NULL == ((*head)->ctx.dxpl = (H5P_genplist_t *)H5I_object((*head)->ctx.dxpl_id))) \ - HGOTO_ERROR(H5E_CONTEXT, H5E_BADTYPE, FAIL, "can't get default dataset transfer property list") \ + /* Retrieve the dataset transfer property list */ \ + H5CX_RETRIEVE_PLIST(dxpl, FAIL) \ \ if((check_prop = H5P_exist_plist((*head)->ctx.dxpl, PROP_NAME)) < 0) \ HGOTO_ERROR(H5E_CONTEXT, H5E_CANTGET, FAIL, "error checking for property") \ @@ -129,15 +131,12 @@ /* Macro for the duplicated code to test and set properties for a property list */ #define H5CX_SET_PROP(PROP_NAME, PROP_FIELD) \ if((*head)->ctx.H5_GLUE(PROP_FIELD,_set)) { \ - /* Check if the property list is already available */ \ - if(NULL == (*head)->ctx.dxpl) \ - /* Get the dataset transfer property list pointer */ \ - if(NULL == ((*head)->ctx.dxpl = (H5P_genplist_t *)H5I_object((*head)->ctx.dxpl_id))) \ - HGOTO_ERROR(H5E_CONTEXT, H5E_BADTYPE, NULL, "can't get default dataset transfer property list") \ + /* Retrieve the dataset transfer property list */ \ + H5CX_RETRIEVE_PLIST(dxpl, NULL) \ \ - /* Set the chunk filter mask property */ \ + /* Set the property */ \ if(H5P_set((*head)->ctx.dxpl, PROP_NAME, &(*head)->ctx.PROP_FIELD) < 0) \ - HGOTO_ERROR(H5E_CONTEXT, H5E_CANTSET, NULL, "error setting filter mask xfer property") \ + HGOTO_ERROR(H5E_CONTEXT, H5E_CANTSET, NULL, "error setting data xfer property") \ } /* end if */ #endif /* H5_HAVE_PARALLEL */ @@ -175,7 +174,7 @@ * corresponding property in the property list to be set when the API * context is popped, when returning from the API routine. Note that the * naming of these fields, <foo> and <foo>_set, is important for the -* H5CX_TEST_SET_PROP and H5CX_SET_PROP macros to work properly. + * H5CX_TEST_SET_PROP and H5CX_SET_PROP macros to work properly. */ typedef struct H5CX_t { /* DXPL */ @@ -186,6 +185,10 @@ typedef struct H5CX_t { hid_t lapl_id; /* LAPL ID for API operation */ H5P_genplist_t *lapl; /* Link Access Property List */ + /* DCPL */ + hid_t dcpl_id; /* DCPL ID for API operation */ + H5P_genplist_t *dcpl; /* Dataset Creation Property List */ + /* Internal: Object tagging info */ haddr_t tag; /* Current object's tag (ohdr chunk #0 address) */ @@ -271,6 +274,10 @@ typedef struct H5CX_t { size_t nlinks; /* Number of soft / UD links to traverse (H5L_ACS_NLINKS_NAME) */ hbool_t nlinks_valid; /* Whether number of soft / UD links to traverse is valid */ + /* Cached DCPL properties */ + hbool_t do_min_dset_ohdr; /* Whether to minimize dataset object header */ + hbool_t do_min_dset_ohdr_valid; /* Whether minimize dataset object header flag is valid */ + /* Cached VOL settings */ H5VL_connector_prop_t vol_connector_prop; /* Property for VOL connector ID & info */ hbool_t vol_connector_prop_valid; /* Whether property for VOL connector ID & info is valid */ @@ -325,6 +332,12 @@ typedef struct H5CX_lapl_cache_t { size_t nlinks; /* Number of soft / UD links to traverse (H5L_ACS_NLINKS_NAME) */ } H5CX_lapl_cache_t; +/* Typedef for cached default dataset creation property list information */ +/* (Same as the cached DXPL struct, above, except for the default DCPL) */ +typedef struct H5CX_dcpl_cache_t { + hbool_t do_min_dset_ohdr; /* Whether to minimize dataset object header */ +} H5CX_dcpl_cache_t; + /********************/ /* Local Prototypes */ @@ -358,9 +371,15 @@ static H5CX_dxpl_cache_t H5CX_def_dxpl_cache; /* Define a "default" link access property list cache structure to use for default LAPLs */ static H5CX_lapl_cache_t H5CX_def_lapl_cache; +/* Define a "default" dataset creation property list cache structure to use for default DCPLs */ +static H5CX_dcpl_cache_t H5CX_def_dcpl_cache; + /* Declare a static free list to manage H5CX_node_t structs */ H5FL_DEFINE_STATIC(H5CX_node_t); +/* Declare a static free list to manage H5CX_state_t structs */ +H5FL_DEFINE_STATIC(H5CX_state_t); + /*-------------------------------------------------------------------------- @@ -378,6 +397,7 @@ H5CX__init_package(void) { H5P_genplist_t *dx_plist; /* Data transfer property list */ H5P_genplist_t *la_plist; /* Link access property list */ + H5P_genplist_t *dc_plist; /* Dataset creation property list */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_STATIC @@ -477,6 +497,20 @@ H5CX__init_package(void) if(H5P_get(la_plist, H5L_ACS_NLINKS_NAME, &H5CX_def_lapl_cache.nlinks) < 0) HGOTO_ERROR(H5E_CONTEXT, H5E_CANTGET, FAIL, "Can't retrieve number of soft / UD links to traverse") + + /* Reset the "default DCPL cache" information */ + HDmemset(&H5CX_def_dcpl_cache, 0, sizeof(H5CX_dcpl_cache_t)); + + /* Get the default DCPL cache information */ + + /* Get the default dataset creation property list */ + if(NULL == (dc_plist = (H5P_genplist_t *)H5I_object(H5P_DATASET_CREATE_DEFAULT))) + HGOTO_ERROR(H5E_CONTEXT, H5E_BADTYPE, FAIL, "not a dataset create property list") + + /* Get flag to indicate whether to minimize dataset object header */ + if(H5P_get(dc_plist, H5D_CRT_MIN_DSET_HDR_SIZE_NAME, &H5CX_def_dcpl_cache.do_min_dset_ohdr) < 0) + HGOTO_ERROR(H5E_CONTEXT, H5E_CANTGET, FAIL, "Can't retrieve dataset minimize flag") + done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5CX__init_package() */ @@ -677,6 +711,226 @@ H5CX_push_special(void) /*------------------------------------------------------------------------- + * Function: H5CX_retrieve_state + * + * Purpose: Retrieve the state of an API context, for later resumption. + * + * Note: This routine _only_ tracks the state of API context information + * set before the VOL callback is invoked, not values that are + * set internal to the library. It's main purpose is to provide + * API context state to VOL connectors. + * + * Return: Non-negative on success / Negative on failure + * + * Programmer: Quincey Koziol + * January 8, 2019 + * + *------------------------------------------------------------------------- + */ +herr_t +H5CX_retrieve_state(H5CX_state_t **api_state) +{ + H5CX_node_t **head = H5CX_get_my_context(); /* Get the pointer to the head of the API context, for this thread */ + herr_t ret_value = SUCCEED; /* Return value */ + + FUNC_ENTER_NOAPI(FAIL) + + /* Sanity check */ + HDassert(head && *head); + HDassert(api_state); + + /* Allocate & clear API context state */ + if(NULL == (*api_state = H5FL_CALLOC(H5CX_state_t))) + HGOTO_ERROR(H5E_CONTEXT, H5E_CANTALLOC, FAIL, "unable to allocate new API context state") + + /* Check for non-default DXPL */ + if(H5P_DATASET_XFER_DEFAULT != (*head)->ctx.dxpl_id) { + /* Retrieve the DXPL property list */ + H5CX_RETRIEVE_PLIST(dxpl, FAIL) + + /* Copy the DXPL ID */ + if(((*api_state)->dxpl_id = H5P_copy_plist((H5P_genplist_t *)(*head)->ctx.dxpl, FALSE)) < 0) + HGOTO_ERROR(H5E_CONTEXT, H5E_CANTCOPY, FAIL, "can't copy property list") + } /* end if */ + else + (*api_state)->dxpl_id = H5P_DATASET_XFER_DEFAULT; + + /* Check for non-default LAPL */ + if(H5P_LINK_ACCESS_DEFAULT != (*head)->ctx.lapl_id) { + /* Retrieve the LAPL property list */ + H5CX_RETRIEVE_PLIST(lapl, FAIL) + + /* Copy the LAPL ID */ + if(((*api_state)->lapl_id = H5P_copy_plist((H5P_genplist_t *)(*head)->ctx.lapl, FALSE)) < 0) + HGOTO_ERROR(H5E_CONTEXT, H5E_CANTCOPY, FAIL, "can't copy property list") + } /* end if */ + else + (*api_state)->lapl_id = H5P_LINK_ACCESS_DEFAULT; + + /* Keep a reference to the current VOL wrapping context */ + (*api_state)->vol_wrap_ctx = (*head)->ctx.vol_wrap_ctx; + if(NULL != (*api_state)->vol_wrap_ctx) + if(H5VL_inc_vol_wrapper((*api_state)->vol_wrap_ctx) < 0) + HGOTO_ERROR(H5E_CONTEXT, H5E_CANTINC, FAIL, "can't increment refcount on VOL wrapping context") + + /* Keep a copy of the VOL connector property, if there is one */ + if((*head)->ctx.vol_connector_prop_valid && (*head)->ctx.vol_connector_prop.connector_id > 0) { + /* Get the connector property */ + H5MM_memcpy(&(*api_state)->vol_connector_prop, &(*head)->ctx.vol_connector_prop, sizeof(H5VL_connector_prop_t)); + + /* Check for actual VOL connector property */ + if((*api_state)->vol_connector_prop.connector_id) { + /* Copy connector info, if it exists */ + if((*api_state)->vol_connector_prop.connector_info) { + H5VL_class_t *connector; /* Pointer to connector */ + void *new_connector_info = NULL; /* Copy of connector info */ + + /* Retrieve the connector for the ID */ + if(NULL == (connector = (H5VL_class_t *)H5I_object((*api_state)->vol_connector_prop.connector_id))) + HGOTO_ERROR(H5E_CONTEXT, H5E_BADTYPE, FAIL, "not a VOL connector ID") + + /* Allocate and copy connector info */ + if(H5VL_copy_connector_info(connector, &new_connector_info, (*api_state)->vol_connector_prop.connector_info) < 0) + HGOTO_ERROR(H5E_CONTEXT, H5E_CANTCOPY, FAIL, "connector info copy failed") + (*api_state)->vol_connector_prop.connector_info = new_connector_info; + } /* end if */ + + /* Increment the refcount on the connector ID */ + if(H5I_inc_ref((*api_state)->vol_connector_prop.connector_id, FALSE) < 0) + HGOTO_ERROR(H5E_CONTEXT, H5E_CANTINC, FAIL, "incrementing VOL connector ID failed") + } /* end if */ + } /* end if */ + +#ifdef H5_HAVE_PARALLEL + /* Save parallel I/O settings */ + (*api_state)->coll_metadata_read = (*head)->ctx.coll_metadata_read; +#endif /* H5_HAVE_PARALLEL */ + +done: + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5CX_retrieve_state() */ + + +/*------------------------------------------------------------------------- + * Function: H5CX_restore_state + * + * Purpose: Restore an API context, from a previously retrieved state. + * + * Note: This routine _only_ resets the state of API context information + * set before the VOL callback is invoked, not values that are + * set internal to the library. It's main purpose is to restore + * API context state from VOL connectors. + * + * Return: Non-negative on success / Negative on failure + * + * Programmer: Quincey Koziol + * January 9, 2019 + * + *------------------------------------------------------------------------- + */ +herr_t +H5CX_restore_state(const H5CX_state_t *api_state) +{ + H5CX_node_t **head = H5CX_get_my_context(); /* Get the pointer to the head of the API context, for this thread */ + + FUNC_ENTER_NOAPI_NOINIT_NOERR + + /* Sanity check */ + HDassert(head && *head); + HDassert(api_state); + + /* Restore the DXPL info */ + (*head)->ctx.dxpl_id = api_state->dxpl_id; + (*head)->ctx.dxpl = NULL; + + /* Restore the LAPL info */ + (*head)->ctx.lapl_id = api_state->lapl_id; + (*head)->ctx.lapl = NULL; + + /* Restore the VOL wrapper context */ + (*head)->ctx.vol_wrap_ctx = api_state->vol_wrap_ctx; + + /* Restore the VOL connector info */ + if(api_state->vol_connector_prop.connector_id) { + H5MM_memcpy(&(*head)->ctx.vol_connector_prop, &api_state->vol_connector_prop, sizeof(H5VL_connector_prop_t)); + (*head)->ctx.vol_connector_prop_valid = TRUE; + } /* end if */ + +#ifdef H5_HAVE_PARALLEL + /* Restore parallel I/O settings */ + (*head)->ctx.coll_metadata_read = api_state->coll_metadata_read; +#endif /* H5_HAVE_PARALLEL */ + + FUNC_LEAVE_NOAPI(SUCCEED) +} /* end H5CX_restore_state() */ + + +/*------------------------------------------------------------------------- + * Function: H5CX_free_state + * + * Purpose: Free a previously retrievedAPI context state + * + * Return: Non-negative on success / Negative on failure + * + * Programmer: Quincey Koziol + * January 9, 2019 + * + *------------------------------------------------------------------------- + */ +herr_t +H5CX_free_state(H5CX_state_t *api_state) +{ + herr_t ret_value = SUCCEED; /* Return value */ + + FUNC_ENTER_NOAPI(FAIL) + + /* Sanity check */ + HDassert(api_state); + + /* Release the DXPL */ + if(api_state->dxpl_id != H5P_DATASET_XFER_DEFAULT) + if(H5I_dec_ref(api_state->dxpl_id) < 0) + HGOTO_ERROR(H5E_CONTEXT, H5E_CANTDEC, FAIL, "can't decrement refcount on DXPL") + + /* Release the LAPL */ + if(api_state->lapl_id != H5P_LINK_ACCESS_DEFAULT) + if(H5I_dec_ref(api_state->lapl_id) < 0) + HGOTO_ERROR(H5E_CONTEXT, H5E_CANTDEC, FAIL, "can't decrement refcount on LAPL") + + /* Release the VOL wrapper context */ + if(api_state->vol_wrap_ctx) + if(H5VL_dec_vol_wrapper(api_state->vol_wrap_ctx) < 0) + HGOTO_ERROR(H5E_CONTEXT, H5E_CANTDEC, FAIL, "can't decrement refcount on VOL wrapping context") + + /* Release the VOL connector property, if it was set */ + if(api_state->vol_connector_prop.connector_id) { + /* Clean up any VOL connector info */ + if(api_state->vol_connector_prop.connector_info) { + H5VL_class_t *connector; /* Pointer to connector */ + + /* Retrieve the connector for the ID */ + if(NULL == (connector = (H5VL_class_t *)H5I_object(api_state->vol_connector_prop.connector_id))) + HGOTO_ERROR(H5E_CONTEXT, H5E_BADTYPE, FAIL, "not a VOL connector ID") + + /* Free the connector info */ + if(H5VL_free_connector_info(connector, api_state->vol_connector_prop.connector_info) < 0) + HGOTO_ERROR(H5E_CONTEXT, H5E_CANTRELEASE, FAIL, "unable to release VOL connector info object") + } /* end if */ + + /* Decrement connector ID */ + if(H5I_dec_ref(api_state->vol_connector_prop.connector_id) < 0) + HDONE_ERROR(H5E_CONTEXT, H5E_CANTDEC, FAIL, "can't close VOL connector ID") + } /* end if */ + + /* Free the state */ + api_state = H5FL_FREE(H5CX_state_t, api_state); + +done: + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5CX_free_state() */ + + +/*------------------------------------------------------------------------- * Function: H5CX_is_def_dxpl * * Purpose: Checks if the API context is using the library's default DXPL @@ -732,6 +986,35 @@ H5CX_set_dxpl(hid_t dxpl_id) /*------------------------------------------------------------------------- + * Function: H5CX_set_dcpl + * + * Purpose: Sets the DCPL for the current API call context. + * + * Return: <none> + * + * Programmer: Quincey Koziol + * March 6, 2019 + * + *------------------------------------------------------------------------- + */ +void +H5CX_set_dcpl(hid_t dcpl_id) +{ + H5CX_node_t **head = H5CX_get_my_context(); /* Get the pointer to the head of the API context, for this thread */ + + FUNC_ENTER_NOAPI_NOINIT_NOERR + + /* Sanity check */ + HDassert(*head); + + /* Set the API context's DCPL to a new value */ + (*head)->ctx.dcpl_id = dcpl_id; + + FUNC_LEAVE_NOAPI_VOID +} /* end H5CX_set_dcpl() */ + + +/*------------------------------------------------------------------------- * Function: H5CX_set_lapl * * Purpose: Sets the LAPL for the current API call context. @@ -815,8 +1098,8 @@ H5CX_set_apl(hid_t *acspl_id, const H5P_libclass_t *libclass, #ifdef H5_HAVE_PARALLEL /* If this routine is not guaranteed to be collective (i.e. it doesn't - * modify the structural metadata in a file), check if we should use - * a collective metadata read. + * modify the structural metadata in a file), check if the application + * specified a collective metadata read for just this operation. */ if(!is_collective) { H5P_genplist_t *plist; /* Property list pointer */ @@ -890,6 +1173,7 @@ H5CX_set_loc(hid_t #endif /* H5_HAVE_PARALLEL */ loc_id) { +#ifdef H5_HAVE_PARALLEL H5CX_node_t **head = H5CX_get_my_context(); /* Get the pointer to the head of the API context, for this thread */ herr_t ret_value = SUCCEED; /* Return value */ @@ -898,7 +1182,6 @@ H5CX_set_loc(hid_t /* Sanity check */ HDassert(head && *head); -#ifdef H5_HAVE_PARALLEL /* Set collective metadata read flag */ (*head)->ctx.coll_metadata_read = TRUE; @@ -919,10 +1202,14 @@ H5CX_set_loc(hid_t if(mpi_comm != MPI_COMM_NULL) MPI_Barrier(mpi_comm); } /* end if */ -#endif /* H5_HAVE_PARALLEL */ done: FUNC_LEAVE_NOAPI(ret_value) +#else /* H5_HAVE_PARALLEL */ + FUNC_ENTER_NOAPI_NOINIT_NOERR + + FUNC_LEAVE_NOAPI(SUCCEED) +#endif /* H5_HAVE_PARALLEL */ } /* end H5CX_set_loc() */ @@ -984,7 +1271,7 @@ H5CX_set_vol_connector_prop(const H5VL_connector_prop_t *vol_connector_prop) HDassert(head && *head); /* Set the API context value */ - HDmemcpy(&(*head)->ctx.vol_connector_prop, vol_connector_prop, sizeof(H5VL_connector_prop_t)); + H5MM_memcpy(&(*head)->ctx.vol_connector_prop, vol_connector_prop, sizeof(H5VL_connector_prop_t)); /* Mark the value as valid */ (*head)->ctx.vol_connector_prop_valid = TRUE; @@ -1109,7 +1396,7 @@ H5CX_get_vol_connector_prop(H5VL_connector_prop_t *vol_connector_prop) /* Check for value that was set */ if((*head)->ctx.vol_connector_prop_valid) /* Get the value */ - HDmemcpy(vol_connector_prop, &(*head)->ctx.vol_connector_prop, sizeof(H5VL_connector_prop_t)); + H5MM_memcpy(vol_connector_prop, &(*head)->ctx.vol_connector_prop, sizeof(H5VL_connector_prop_t)); else HDmemset(vol_connector_prop, 0, sizeof(H5VL_connector_prop_t)); @@ -1314,7 +1601,7 @@ H5CX_get_btree_split_ratios(double split_ratio[3]) H5CX_RETRIEVE_PROP_VALID(dxpl, H5P_DATASET_XFER_DEFAULT, H5D_XFER_BTREE_SPLIT_RATIO_NAME, btree_split_ratio) /* Get the B-tree split ratio values */ - HDmemcpy(split_ratio, &(*head)->ctx.btree_split_ratio, sizeof((*head)->ctx.btree_split_ratio)); + H5MM_memcpy(split_ratio, &(*head)->ctx.btree_split_ratio, sizeof((*head)->ctx.btree_split_ratio)); done: FUNC_LEAVE_NOAPI(ret_value) @@ -2001,6 +2288,42 @@ done: /*------------------------------------------------------------------------- + * Function: H5CX_get_dset_min_ohdr_flag + * + * Purpose: Retrieves the flag that indicates whether the dataset object + * header should be minimized + * + * Return: Non-negative on success / Negative on failure + * + * Programmer: Quincey Koziol + * March 6, 2019 + * + *------------------------------------------------------------------------- + */ +herr_t +H5CX_get_dset_min_ohdr_flag(hbool_t *dset_min_ohdr_flag) +{ + H5CX_node_t **head = H5CX_get_my_context(); /* Get the pointer to the head of the API context, for this thread */ + herr_t ret_value = SUCCEED; /* Return value */ + + FUNC_ENTER_NOAPI(FAIL) + + /* Sanity check */ + HDassert(dset_min_ohdr_flag); + HDassert(head && *head); + HDassert(H5P_DEFAULT != (*head)->ctx.dcpl_id); + + H5CX_RETRIEVE_PROP_VALID(dcpl, H5P_DATASET_CREATE_DEFAULT, H5D_CRT_MIN_DSET_HDR_SIZE_NAME, do_min_dset_ohdr) + + /* Get the value */ + *dset_min_ohdr_flag = (*head)->ctx.do_min_dset_ohdr; + +done: + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5CX_get_dset_min_ohdr_flag() */ + + +/*------------------------------------------------------------------------- * Function: H5CX_set_tag * * Purpose: Sets the object tag for the current API call context. |