diff options
Diffstat (limited to 'src/H5VLint.c')
| -rw-r--r-- | src/H5VLint.c | 154 |
1 files changed, 133 insertions, 21 deletions
diff --git a/src/H5VLint.c b/src/H5VLint.c index bc50a38..195e461 100644 --- a/src/H5VLint.c +++ b/src/H5VLint.c @@ -724,7 +724,7 @@ H5VL_register(H5I_type_t type, void *object, H5VL_t *vol_connector, hbool_t app_ /* (Does not wrap object, since it's from a VOL callback) */ if(NULL == (vol_obj = H5VL__new_vol_obj(type, object, vol_connector, FALSE))) HGOTO_ERROR(H5E_VOL, H5E_CANTCREATE, FAIL, "can't create VOL object") - + /* Register VOL object as _object_ type, for future object API calls */ if((ret_value = H5I_register(type, vol_obj, app_ref)) < 0) HGOTO_ERROR(H5E_VOL, H5E_CANTREGISTER, H5I_INVALID_HID, "unable to atomize handle") @@ -739,7 +739,7 @@ done: * * Purpose: Registers an OBJECT in a TYPE with the supplied ID for it. * This routine will check to ensure the supplied ID is not already - * in use, and ensure that it is a valid ID for the given type, + * in use, and ensure that it is a valid ID for the given type, * but will NOT check to ensure the OBJECT is not already * registered (thus, it is possible to register one object under * multiple IDs). @@ -991,6 +991,114 @@ done: /*------------------------------------------------------------------------- + * Function: H5VL_object_is_native + * + * Purpose: Query if an object is (if it's a file object) / is in (if its + * an object) a native connector's file. + * + * Return: SUCCEED/FAIL + * + * Programmer: Quincey Koziol + * December 14, 2019 + * + *------------------------------------------------------------------------- + */ +herr_t +H5VL_object_is_native(const H5VL_object_t *obj, hbool_t *is_native) +{ + const H5VL_class_t *cls; /* VOL connector class structs for object */ + const H5VL_class_t *native_cls; /* Native VOL connector class structs */ + int cmp_value; /* Comparison result */ + herr_t ret_value = SUCCEED; /* Return value */ + + FUNC_ENTER_NOAPI(FAIL) + + /* Check arguments */ + HDassert(obj); + HDassert(is_native); + + /* Retrieve the terminal connector class for the object */ + cls = NULL; + if(H5VL_introspect_get_conn_cls(obj, H5VL_GET_CONN_LVL_TERM, &cls) < 0) + HGOTO_ERROR(H5E_VOL, H5E_CANTGET, FAIL, "can't get VOL connector class") + + /* Retrieve the native connector class */ + if(NULL == (native_cls = (H5VL_class_t *)H5I_object_verify(H5VL_NATIVE, H5I_VOL))) + HGOTO_ERROR(H5E_VOL, H5E_CANTGET, FAIL, "can't retrieve native VOL connector class") + + /* Compare connector classes */ + if(H5VL_cmp_connector_cls(&cmp_value, cls, native_cls) < 0) + HGOTO_ERROR(H5E_VOL, H5E_CANTCOMPARE, FAIL, "can't compare connector classes") + + /* If classes compare equal, then the object is / is in a native connector's file */ + *is_native = (cmp_value == 0); + +done: + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5VL_object_is_native() */ + + +/*------------------------------------------------------------------------- + * Function: H5VL_file_is_same + * + * Purpose: Query if two files are the same. + * + * Return: SUCCEED/FAIL + * + * Programmer: Quincey Koziol + * December 14, 2019 + * + *------------------------------------------------------------------------- + */ +herr_t +H5VL_file_is_same(const H5VL_object_t *vol_obj1, const H5VL_object_t *vol_obj2, + hbool_t *same_file) +{ + const H5VL_class_t *cls1; /* VOL connector class struct for first object */ + const H5VL_class_t *cls2; /* VOL connector class struct for second object */ + int cmp_value; /* Comparison result */ + herr_t ret_value = SUCCEED; /* Return value */ + + FUNC_ENTER_NOAPI(FAIL) + + /* Check arguments */ + HDassert(vol_obj1); + HDassert(vol_obj2); + HDassert(same_file); + + /* Retrieve the terminal connectors for each object */ + cls1 = NULL; + if(H5VL_introspect_get_conn_cls(vol_obj1, H5VL_GET_CONN_LVL_TERM, &cls1) < 0) + HGOTO_ERROR(H5E_VOL, H5E_CANTGET, FAIL, "can't get VOL connector class") + cls2 = NULL; + if(H5VL_introspect_get_conn_cls(vol_obj2, H5VL_GET_CONN_LVL_TERM, &cls2) < 0) + HGOTO_ERROR(H5E_VOL, H5E_CANTGET, FAIL, "can't get VOL connector class") + + /* Compare connector classes */ + if(H5VL_cmp_connector_cls(&cmp_value, cls1, cls2) < 0) + HGOTO_ERROR(H5E_VOL, H5E_CANTCOMPARE, FAIL, "can't compare connector classes") + + /* If the connector classes are different, the files are different */ + if(cmp_value) + *same_file = FALSE; + else { + void *obj2; /* Terminal object for second file */ + + /* Get unwrapped (terminal) object for vol_obj2 */ + if(NULL == (obj2 = H5VL_object_data(vol_obj2))) + HGOTO_ERROR(H5E_VOL, H5E_CANTGET, FAIL, "can't get unwrapped object") + + /* Make callback */ + if(H5VL_file_specific(vol_obj1, H5VL_FILE_IS_EQUAL, H5P_DATASET_XFER_DEFAULT, NULL, obj2, same_file) < 0) + HGOTO_ERROR(H5E_VOL, H5E_CANTOPERATE, FAIL, "file specific failed") + } /* end else */ + +done: + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5VL_file_is_same() */ + + +/*------------------------------------------------------------------------- * Function: H5VL_register_connector * * Purpose: Registers a new VOL connector as a member of the virtual object @@ -999,7 +1107,7 @@ done: * Return: Success: A VOL connector ID which is good until the * library is closed or the connector is unregistered. * - * Failure: H5I_INVALID_HID + * Failure: H5I_INVALID_HID * * Programmer: Dana Robinson * June 22, 2017 @@ -1414,7 +1522,7 @@ done: * * Purpose: Utility function to return the object pointer associated with * a hid_t. This routine is the same as H5I_object for all types - * except for named datatypes, where the vol_obj is returned that + * except for named datatypes, where the vol_obj is returned that * is attached to the H5T_t struct. * * Return: Success: object pointer @@ -1432,15 +1540,15 @@ H5VL_vol_object(hid_t id) FUNC_ENTER_NOAPI(NULL) obj_type = H5I_get_type(id); - if (H5I_FILE == obj_type || H5I_GROUP == obj_type || H5I_ATTR == obj_type || + if(H5I_FILE == obj_type || H5I_GROUP == obj_type || H5I_ATTR == obj_type || H5I_DATASET == obj_type || H5I_DATATYPE == obj_type) { /* Get the object */ - if (NULL == (obj = H5I_object(id))) + if(NULL == (obj = H5I_object(id))) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "invalid identifier") - /* if this is a datatype, get the VOL object attached to the H5T_t struct */ - if (H5I_DATATYPE == obj_type) - if (NULL == (obj = H5T_get_named_type((H5T_t *)obj))) + /* If this is a datatype, get the VOL object attached to the H5T_t struct */ + if(H5I_DATATYPE == obj_type) + if(NULL == (obj = H5T_get_named_type((H5T_t *)obj))) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "not a named datatype") } /* end if */ else @@ -1521,7 +1629,7 @@ done: static void * H5VL__object(hid_t id, H5I_type_t obj_type) { - H5VL_object_t *vol_obj = NULL; + H5VL_object_t *vol_obj = NULL; void *ret_value = NULL; FUNC_ENTER_STATIC @@ -1530,7 +1638,7 @@ H5VL__object(hid_t id, H5I_type_t obj_type) switch(obj_type) { case H5I_GROUP: case H5I_DATASET: - case H5I_FILE: + case H5I_FILE: case H5I_ATTR: case H5I_MAP: /* get the object */ @@ -1910,17 +2018,15 @@ done: *------------------------------------------------------------------------- */ herr_t -H5VL_set_vol_wrapper(void *obj, H5VL_t *connector) +H5VL_set_vol_wrapper(const H5VL_object_t *vol_obj) { H5VL_wrap_ctx_t *vol_wrap_ctx = NULL; /* Object wrapping context */ - void *obj_wrap_ctx = NULL; /* VOL connector's wrapping context */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_NOAPI(FAIL) - /* Sanity checks */ - HDassert(obj); - HDassert(connector); + /* Sanity check */ + HDassert(vol_obj); /* Retrieve the VOL object wrap context */ if(H5CX_get_vol_wrap_ctx((void **)&vol_wrap_ctx) < 0) @@ -1928,13 +2034,19 @@ H5VL_set_vol_wrapper(void *obj, H5VL_t *connector) /* Check for existing wrapping context */ if(NULL == vol_wrap_ctx) { + void *obj_wrap_ctx = NULL; /* VOL connector's wrapping context */ + + /* Sanity checks */ + HDassert(vol_obj->data); + HDassert(vol_obj->connector); + /* Check if the connector can create a wrap context */ - if(connector->cls->wrap_cls.get_wrap_ctx) { + if(vol_obj->connector->cls->wrap_cls.get_wrap_ctx) { /* Sanity check */ - HDassert(connector->cls->wrap_cls.free_wrap_ctx); + HDassert(vol_obj->connector->cls->wrap_cls.free_wrap_ctx); /* Get the wrap context from the connector */ - if((connector->cls->wrap_cls.get_wrap_ctx)(obj, &obj_wrap_ctx) < 0) + if((vol_obj->connector->cls->wrap_cls.get_wrap_ctx)(vol_obj->data, &obj_wrap_ctx) < 0) HGOTO_ERROR(H5E_VOL, H5E_CANTGET, FAIL, "can't retrieve VOL connector's object wrap context") } /* end if */ @@ -1943,11 +2055,11 @@ H5VL_set_vol_wrapper(void *obj, H5VL_t *connector) HGOTO_ERROR(H5E_VOL, H5E_CANTALLOC, FAIL, "can't allocate VOL wrap context") /* Increment the outstanding objects that are using the connector */ - H5VL__conn_inc_rc(connector); + H5VL__conn_inc_rc(vol_obj->connector); /* Set up VOL object wrapper context */ vol_wrap_ctx->rc = 1; - vol_wrap_ctx->connector = connector; + vol_wrap_ctx->connector = vol_obj->connector; vol_wrap_ctx->obj_wrap_ctx = obj_wrap_ctx; } /* end if */ else |