diff options
Diffstat (limited to 'src/H5VLint.c')
| -rw-r--r-- | src/H5VLint.c | 472 |
1 files changed, 427 insertions, 45 deletions
diff --git a/src/H5VLint.c b/src/H5VLint.c index f9262f4..6572faa 100644 --- a/src/H5VLint.c +++ b/src/H5VLint.c @@ -30,10 +30,15 @@ /***********/ #include "H5private.h" /* Generic Functions */ +#include "H5Aprivate.h" /* Attributes */ #include "H5CXprivate.h" /* API Contexts */ +#include "H5Dprivate.h" /* Datasets */ #include "H5Eprivate.h" /* Error handling */ +#include "H5Fprivate.h" /* Files */ #include "H5FLprivate.h" /* Free lists */ +#include "H5Gprivate.h" /* Groups */ #include "H5Iprivate.h" /* IDs */ +#include "H5Mprivate.h" /* Maps */ #include "H5MMprivate.h" /* Memory management */ #include "H5PLprivate.h" /* Plugins */ #include "H5Tprivate.h" /* Datatypes */ @@ -189,6 +194,20 @@ H5VL_init_phase2(void) FUNC_ENTER_NOAPI(FAIL) + /* Initialize all packages for VOL-managed objects */ + if(H5T_init() < 0) + HGOTO_ERROR(H5E_VOL, H5E_CANTINIT, FAIL, "unable to initialize datatype interface") + if(H5D_init() < 0) + HGOTO_ERROR(H5E_VOL, H5E_CANTINIT, FAIL, "unable to initialize dataset interface") + if(H5F_init() < 0) + HGOTO_ERROR(H5E_VOL, H5E_CANTINIT, FAIL, "unable to initialize file interface") + if(H5G_init() < 0) + HGOTO_ERROR(H5E_VOL, H5E_CANTINIT, FAIL, "unable to initialize group interface") + if(H5A_init() < 0) + HGOTO_ERROR(H5E_VOL, H5E_CANTINIT, FAIL, "unable to initialize attribute interface") + if(H5M_init() < 0) + HGOTO_ERROR(H5E_VOL, H5E_CANTINIT, FAIL, "unable to initialize map interface") + /* Set up the default VOL connector in the default FAPL */ if(H5VL__set_def_conn() < 0) HGOTO_ERROR(H5E_VOL, H5E_CANTSET, FAIL, "unable to set default VOL connector") @@ -299,7 +318,7 @@ H5VL__free_cls(H5VL_class_t *cls) HGOTO_ERROR(H5E_VOL, H5E_CANTCLOSEOBJ, FAIL, "VOL connector did not terminate cleanly") /* Release the class */ - H5MM_xfree((void *)cls->name); /* Casting away const OK -QAK */ + H5MM_xfree_const(cls->name); H5FL_FREE(H5VL_class_t, cls); done: @@ -402,11 +421,11 @@ H5VL__set_def_conn(void) HGOTO_ERROR(H5E_VOL, H5E_BADVALUE, FAIL, "VOL connector environment variable set empty?") /* First, check to see if the connector is already registered */ - if((connector_is_registered = H5VL__is_connector_registered(tok)) < 0) + if((connector_is_registered = H5VL__is_connector_registered_by_name(tok)) < 0) HGOTO_ERROR(H5E_VOL, H5E_CANTGET, FAIL, "can't check if VOL connector already registered") else if(connector_is_registered) { /* Retrieve the ID of the already-registered VOL connector */ - if((connector_id = H5VL__get_connector_id(tok, FALSE)) < 0) + if((connector_id = H5VL__get_connector_id_by_name(tok, FALSE)) < 0) HGOTO_ERROR(H5E_VOL, H5E_CANTGET, FAIL, "can't get VOL connector ID") } /* end else-if */ else { @@ -424,7 +443,7 @@ H5VL__set_def_conn(void) else { /* Register the VOL connector */ /* (NOTE: No provisions for vipl_id currently) */ - if((connector_id = H5VL__register_connector_by_name(tok, FALSE, H5P_DEFAULT)) < 0) + if((connector_id = H5VL__register_connector_by_name(tok, TRUE, H5P_VOL_INITIALIZE_DEFAULT)) < 0) HGOTO_ERROR(H5E_VOL, H5E_CANTREGISTER, FAIL, "can't register connector") } /* end else */ } /* end else */ @@ -543,6 +562,7 @@ static H5VL_object_t * H5VL__new_vol_obj(H5I_type_t type, void *object, H5VL_t *vol_connector, hbool_t wrap_obj) { H5VL_object_t *new_vol_obj = NULL; /* Pointer to new VOL object */ + hbool_t conn_rc_incr = FALSE; /* Whether the VOL connector refcount has been incremented */ H5VL_object_t *ret_value = NULL; /* Return value */ FUNC_ENTER_STATIC @@ -569,6 +589,7 @@ H5VL__new_vol_obj(H5I_type_t type, void *object, H5VL_t *vol_connector, hbool_t /* Bump the reference count on the VOL connector */ H5VL__conn_inc_rc(vol_connector); + conn_rc_incr = TRUE; /* If this is a datatype, we have to hide the VOL object under the H5T_t pointer */ if(H5I_DATATYPE == type) { @@ -579,6 +600,12 @@ H5VL__new_vol_obj(H5I_type_t type, void *object, H5VL_t *vol_connector, hbool_t ret_value = (H5VL_object_t *)new_vol_obj; done: + /* Cleanup on error */ + if(NULL == ret_value) { + if(conn_rc_incr && H5VL__conn_dec_rc(vol_connector) < 0) + HDONE_ERROR(H5E_VOL, H5E_CANTDEC, NULL, "unable to decrement ref count on VOL connector") + } /* end if */ + FUNC_LEAVE_NOAPI(ret_value) } /* end H5VL__new_vol_obj() */ @@ -655,14 +682,14 @@ H5VL_conn_free(const H5VL_connector_prop_t *connector_prop) if(connector_prop->connector_id > 0) { if(connector_prop->connector_info) /* Free the connector info */ - if(H5VL_free_connector_info(connector_prop->connector_id, (void *)connector_prop->connector_info) < 0) /* Casting away const OK - QAK */ + if(H5VL_free_connector_info(connector_prop->connector_id, connector_prop->connector_info) < 0) HGOTO_ERROR(H5E_VOL, H5E_CANTRELEASE, FAIL, "unable to release VOL connector info object") /* Decrement reference count for connector ID */ if(H5I_dec_ref(connector_prop->connector_id) < 0) HGOTO_ERROR(H5E_VOL, H5E_CANTDEC, FAIL, "can't decrement reference count for connector ID") - } /* end if */ - } /* end if */ + } + } done: FUNC_LEAVE_NOAPI(ret_value) @@ -697,7 +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") @@ -712,7 +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). @@ -759,16 +786,17 @@ done: * get the connector information instead of it being passed in. * * Return: Success: A valid HDF5 ID - * Failure: H5I_INVALID_HID + * Failure: H5I_INVALID_HID * *------------------------------------------------------------------------- */ hid_t H5VL_register_using_vol_id(H5I_type_t type, void *obj, hid_t connector_id, hbool_t app_ref) { - H5VL_class_t *cls = NULL; - H5VL_t *connector = NULL; /* VOL connector struct */ - hid_t ret_value = H5I_INVALID_HID; + H5VL_class_t *cls = NULL; /* VOL connector class */ + H5VL_t *connector = NULL; /* VOL connector struct */ + hbool_t conn_id_incr = FALSE; /* Whether the VOL connector ID has been incremented */ + hid_t ret_value = H5I_INVALID_HID;/* Return value */ FUNC_ENTER_NOAPI(FAIL) @@ -783,17 +811,85 @@ H5VL_register_using_vol_id(H5I_type_t type, void *obj, hid_t connector_id, hbool connector->id = connector_id; if(H5I_inc_ref(connector->id, FALSE) < 0) HGOTO_ERROR(H5E_VOL, H5E_CANTINC, H5I_INVALID_HID, "unable to increment ref count on VOL connector") + conn_id_incr = TRUE; /* Get an ID for the VOL object */ if((ret_value = H5VL_register(type, obj, connector, app_ref)) < 0) HGOTO_ERROR(H5E_VOL, H5E_CANTREGISTER, H5I_INVALID_HID, "unable to register object handle") done: + /* Clean up on error */ + if(ret_value < 0) { + /* Decrement VOL connector ID ref count on error */ + if(conn_id_incr && H5I_dec_ref(connector_id) < 0) + HDONE_ERROR(H5E_VOL, H5E_CANTDEC, H5I_INVALID_HID, "unable to decrement ref count on VOL connector") + + /* Free VOL connector struct */ + if(NULL != connector) + connector = H5FL_FREE(H5VL_t, connector); + } /* end if */ + FUNC_LEAVE_NOAPI(ret_value) } /* end H5VL_register_using_vol_id() */ /*------------------------------------------------------------------------- + * Function: H5VL_create_object_using_vol_id + * + * Purpose: Similar to H5VL_register_using_vol_id but does not create + * an id. Intended for use by internal library routines, + * therefore it wraps the object. + * + * Return: Success: VOL object pointer + * Failure: NULL + * + *------------------------------------------------------------------------- + */ +H5VL_object_t * +H5VL_create_object_using_vol_id(H5I_type_t type, void *obj, hid_t connector_id) +{ + H5VL_class_t *cls = NULL; /* VOL connector class */ + H5VL_t *connector = NULL; /* VOL connector struct */ + hbool_t conn_id_incr = FALSE; /* Whether the VOL connector ID has been incremented */ + H5VL_object_t *ret_value = NULL; /* Return value */ + + FUNC_ENTER_NOAPI(NULL) + + /* Get the VOL class object from the connector's ID */ + if(NULL == (cls = (H5VL_class_t *)H5I_object_verify(connector_id, H5I_VOL))) + HGOTO_ERROR(H5E_VOL, H5E_BADTYPE, NULL, "not a VOL connector ID") + + /* Setup VOL info struct */ + if(NULL == (connector = H5FL_CALLOC(H5VL_t))) + HGOTO_ERROR(H5E_VOL, H5E_CANTALLOC, NULL, "can't allocate VOL info struct") + connector->cls = cls; + connector->id = connector_id; + if(H5I_inc_ref(connector->id, FALSE) < 0) + HGOTO_ERROR(H5E_VOL, H5E_CANTINC, NULL, "unable to increment ref count on VOL connector") + conn_id_incr = TRUE; + + /* Set up VOL object for the passed-in data */ + /* (Wraps object, since it's a library object) */ + if(NULL == (ret_value = H5VL__new_vol_obj(type, obj, connector, TRUE))) + HGOTO_ERROR(H5E_VOL, H5E_CANTCREATE, NULL, "can't create VOL object") + +done: + /* Clean up on error */ + if(!ret_value) { + /* Decrement VOL connector ID ref count on error */ + if(conn_id_incr && H5I_dec_ref(connector_id) < 0) + HDONE_ERROR(H5E_VOL, H5E_CANTDEC, NULL, "unable to decrement ref count on VOL connector") + + /* Free VOL connector struct */ + if(NULL != connector) + connector = H5FL_FREE(H5VL_t, connector); + } /* end if */ + + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5VL_create_object_using_vol_id() */ + + +/*------------------------------------------------------------------------- * Function: H5VL__conn_inc_rc * * Purpose: Wrapper to increment the ref. count on a connector. @@ -895,6 +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 @@ -903,7 +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 @@ -940,7 +1144,7 @@ H5VL_register_connector(const void *_cls, hbool_t app_ref, hid_t vipl_id) done: if(ret_value < 0 && saved) { if(saved->name) - H5MM_xfree((void *)(saved->name)); /* Casting away const OK -QAK */ + H5MM_xfree_const(saved->name); H5FL_FREE(H5VL_class_t, saved); } /* end if */ @@ -1031,7 +1235,7 @@ H5VL__register_connector_by_name(const char *name, hbool_t app_ref, hid_t vipl_i op_data.found_id = H5I_INVALID_HID; /* Check if connector is already registered */ - if(H5I_iterate(H5I_VOL, H5VL__get_connector_cb, &op_data, TRUE) < 0) + if(H5I_iterate(H5I_VOL, H5VL__get_connector_cb, &op_data, app_ref) < 0) HGOTO_ERROR(H5E_VOL, H5E_BADITER, H5I_INVALID_HID, "can't iterate over VOL ids") /* If connector alread registered, increment ref count on ID and return ID */ @@ -1121,7 +1325,7 @@ done: /*------------------------------------------------------------------------- - * Function: H5VL__is_connector_registered + * Function: H5VL__is_connector_registered_by_name * * Purpose: Checks if a connector with a particular name is registered. * @@ -1134,7 +1338,7 @@ done: *------------------------------------------------------------------------- */ htri_t -H5VL__is_connector_registered(const char *name) +H5VL__is_connector_registered_by_name(const char *name) { H5VL_get_connector_ud_t op_data; /* Callback info for connector search */ htri_t ret_value = FALSE; /* Return value */ @@ -1156,12 +1360,84 @@ H5VL__is_connector_registered(const char *name) done: FUNC_LEAVE_NOAPI(ret_value) -} /* end H5VL__is_connector_registered() */ +} /* end H5VL__is_connector_registered_by_name() */ + + +/*------------------------------------------------------------------------- + * Function: H5VL__is_connector_registered_by_value + * + * Purpose: Checks if a connector with a particular value (ID) is + * registered. + * + * Return: Success: 0 + * Failure: -1 + * + *------------------------------------------------------------------------- + */ +htri_t +H5VL__is_connector_registered_by_value(H5VL_class_value_t value) +{ + H5VL_get_connector_ud_t op_data; /* Callback info for connector search */ + htri_t ret_value = FALSE; /* Return value */ + + FUNC_ENTER_PACKAGE + + /* Set up op data for iteration */ + op_data.kind = H5VL_GET_CONNECTOR_BY_VALUE; + op_data.u.value = value; + op_data.found_id = H5I_INVALID_HID; + + /* Find connector with value */ + if(H5I_iterate(H5I_VOL, H5VL__get_connector_cb, &op_data, TRUE) < 0) + HGOTO_ERROR(H5E_VOL, H5E_BADITER, FAIL, "can't iterate over VOL connectors") + + /* Found a connector with that name */ + if(op_data.found_id != H5I_INVALID_HID) + ret_value = TRUE; + +done: + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5VL__is_connector_registered_by_value() */ /*------------------------------------------------------------------------- * Function: H5VL__get_connector_id * + * Purpose: Retrieves the VOL connector ID for a given object ID. + * + * Return: Positive if the VOL class has been registered + * Negative on error (if the class is not a valid class or not registered) + * + * Programmer: Dana Robinson + * June 17, 2017 + * + *------------------------------------------------------------------------- + */ +hid_t +H5VL__get_connector_id(hid_t obj_id, hbool_t is_api) +{ + H5VL_object_t *vol_obj = NULL; + hid_t ret_value = H5I_INVALID_HID; /* Return value */ + + FUNC_ENTER_PACKAGE + + /* Get the underlying VOL object for the object ID */ + if(NULL == (vol_obj = H5VL_vol_object(obj_id))) + HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, H5I_INVALID_HID, "invalid location identifier") + + /* Return the VOL object's VOL class ID */ + ret_value = vol_obj->connector->id; + if(H5I_inc_ref(ret_value, is_api) < 0) + HGOTO_ERROR(H5E_FILE, H5E_CANTINC, H5I_INVALID_HID, "unable to increment ref count on VOL connector") + +done: + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5VL__get_connector_id() */ + + +/*------------------------------------------------------------------------- + * Function: H5VL__get_connector_id_by_name + * * Purpose: Retrieves the ID for a registered VOL connector. * * Return: Positive if the VOL class has been registered @@ -1173,7 +1449,70 @@ done: *------------------------------------------------------------------------- */ hid_t -H5VL__get_connector_id(const char *name, hbool_t is_api) +H5VL__get_connector_id_by_name(const char *name, hbool_t is_api) +{ + hid_t ret_value = H5I_INVALID_HID; /* Return value */ + + FUNC_ENTER_PACKAGE + + /* Find connector with name */ + if((ret_value = H5VL__peek_connector_id_by_name(name)) < 0) + HGOTO_ERROR(H5E_VOL, H5E_BADITER, H5I_INVALID_HID, "can't find VOL connector") + + /* Found a connector with that name */ + if(H5I_inc_ref(ret_value, is_api) < 0) + HGOTO_ERROR(H5E_FILE, H5E_CANTINC, H5I_INVALID_HID, "unable to increment ref count on VOL connector") + +done: + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5VL__get_connector_id_by_name() */ + + +/*------------------------------------------------------------------------- + * Function: H5VL__get_connector_id_by_value + * + * Purpose: Retrieves the ID for a registered VOL connector. + * + * Return: Positive if the VOL class has been registered + * Negative on error (if the class is not a valid class or + * not registered) + * + *------------------------------------------------------------------------- + */ +hid_t +H5VL__get_connector_id_by_value(H5VL_class_value_t value, hbool_t is_api) +{ + hid_t ret_value = H5I_INVALID_HID; /* Return value */ + + FUNC_ENTER_PACKAGE + + /* Find connector with value */ + if((ret_value = H5VL__peek_connector_id_by_value(value)) < 0) + HGOTO_ERROR(H5E_VOL, H5E_BADITER, H5I_INVALID_HID, "can't find VOL connector") + + /* Found a connector with that value */ + if(H5I_inc_ref(ret_value, is_api) < 0) + HGOTO_ERROR(H5E_FILE, H5E_CANTINC, H5I_INVALID_HID, "unable to increment ref count on VOL connector") + +done: + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5VL__get_connector_id_by_value() */ + + +/*------------------------------------------------------------------------- + * Function: H5VL__peek_connector_id_by_name + * + * Purpose: Retrieves the ID for a registered VOL connector. Does not + * increment the ref count + * + * Return: Positive if the VOL class has been registered + * Negative on error (if the class is not a valid class or + * not registered) + * + *------------------------------------------------------------------------- + */ +hid_t +H5VL__peek_connector_id_by_name(const char *name) { H5VL_get_connector_ud_t op_data; /* Callback info for connector search */ hid_t ret_value = H5I_INVALID_HID; /* Return value */ @@ -1189,16 +1528,49 @@ H5VL__get_connector_id(const char *name, hbool_t is_api) if(H5I_iterate(H5I_VOL, H5VL__get_connector_cb, &op_data, TRUE) < 0) HGOTO_ERROR(H5E_VOL, H5E_BADITER, H5I_INVALID_HID, "can't iterate over VOL connectors") - /* Found a connector with that name */ - if(op_data.found_id != H5I_INVALID_HID) { - if(H5I_inc_ref(op_data.found_id, is_api) < 0) - HGOTO_ERROR(H5E_FILE, H5E_CANTINC, H5I_INVALID_HID, "unable to increment ref count on VOL connector") - ret_value = op_data.found_id; - } /* end if */ + /* Set return value */ + ret_value = op_data.found_id; done: FUNC_LEAVE_NOAPI(ret_value) -} /* end H5VL__get_connector_id() */ +} /* end H5VL__peek_connector_id_by_name() */ + + +/*------------------------------------------------------------------------- + * Function: H5VL__peek_connector_id_by_value + * + * Purpose: Retrieves the ID for a registered VOL connector. Does not + * increment the ref count + * + * Return: Positive if the VOL class has been registered + * Negative on error (if the class is not a valid class or + * not registered) + * + *------------------------------------------------------------------------- + */ +hid_t +H5VL__peek_connector_id_by_value(H5VL_class_value_t value) +{ + H5VL_get_connector_ud_t op_data; /* Callback info for connector search */ + hid_t ret_value = H5I_INVALID_HID; /* Return value */ + + FUNC_ENTER_PACKAGE + + /* Set up op data for iteration */ + op_data.kind = H5VL_GET_CONNECTOR_BY_VALUE; + op_data.u.value = value; + op_data.found_id = H5I_INVALID_HID; + + /* Find connector with value */ + if(H5I_iterate(H5I_VOL, H5VL__get_connector_cb, &op_data, TRUE) < 0) + HGOTO_ERROR(H5E_VOL, H5E_BADITER, H5I_INVALID_HID, "can't iterate over VOL connectors") + + /* Set return value */ + ret_value = op_data.found_id; + +done: + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5VL__peek_connector_id_by_value() */ /*------------------------------------------------------------------------- @@ -1291,7 +1663,7 @@ 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 @@ -1309,15 +1681,15 @@ 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 @@ -1398,7 +1770,7 @@ 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 @@ -1407,7 +1779,7 @@ 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 */ @@ -1535,6 +1907,12 @@ H5VL_cmp_connector_cls(int *cmp_value, const H5VL_class_t *cls1, const H5VL_clas HDassert(cls1); HDassert(cls2); + /* If the pointers are the same the classes are the same */ + if(cls1 == cls2) { + *cmp_value = 0; + HGOTO_DONE(SUCCEED); + } /* end if */ + /* Compare connector "values" */ if(cls1->value < cls2->value) { *cmp_value = -1; @@ -1781,17 +2159,15 @@ 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) @@ -1799,13 +2175,19 @@ 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 */ @@ -1814,11 +2196,11 @@ 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 |