diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/H5G.c | 43 | ||||
| -rw-r--r-- | src/H5L.c | 58 | ||||
| -rw-r--r-- | src/H5Lpublic.h | 2 |
3 files changed, 94 insertions, 9 deletions
@@ -1753,9 +1753,7 @@ H5G_visit_cb(const H5O_link_t *lnk, void *_udata) /* Check for doing more work */ if(ret_value == H5_ITER_CONT && lnk->type == H5L_TYPE_HARD) { - H5O_type_t otype; /* Basic object type (group, dataset, etc.) */ H5_obj_t obj_pos; /* Object "position" for this object */ - unsigned rc; /* Reference count of object */ /* Set up opened group location to fill in */ obj_loc.oloc = &obj_oloc; @@ -1774,6 +1772,9 @@ H5G_visit_cb(const H5O_link_t *lnk, void *_udata) /* Check if we've seen the object the link references before */ if(NULL == H5SL_search(udata->visited, &obj_pos)) { + H5O_type_t otype; /* Basic object type (group, dataset, etc.) */ + unsigned rc; /* Reference count of object */ + /* Get the object's reference count and type */ if(H5O_get_rc_and_type(&obj_oloc, udata->dxpl_id, &rc, &otype) < 0) HGOTO_ERROR(H5E_SYM, H5E_CANTGET, H5_ITER_ERROR, "unable to get object info") @@ -1888,13 +1889,15 @@ H5G_visit(hid_t loc_id, const char *group_name, H5_index_t idx_type, H5_iter_order_t order, H5L_iterate_t op, void *op_data, hid_t lapl_id, hid_t dxpl_id) { - H5G_iter_visit_ud_t udata; /* User data for callback */ - H5O_linfo_t linfo; /* Link info message */ - hid_t gid = (-1); /* Group ID */ - H5G_t *grp = NULL; /* Group opened */ - H5G_loc_t loc; /* Location of group passed in */ - H5G_loc_t start_loc; /* Location of starting group */ - herr_t ret_value; /* Return value */ + H5G_iter_visit_ud_t udata; /* User data for callback */ + H5O_linfo_t linfo; /* Link info message */ + hid_t gid = (-1); /* Group ID */ + H5G_t *grp = NULL; /* Group opened */ + H5G_loc_t loc; /* Location of group passed in */ + H5G_loc_t start_loc; /* Location of starting group */ + H5O_type_t otype; /* Basic object type (group, dataset, etc.) */ + unsigned rc; /* Reference count of object */ + herr_t ret_value; /* Return value */ FUNC_ENTER_NOAPI(H5G_visit, FAIL) @@ -1934,6 +1937,28 @@ H5G_visit(hid_t loc_id, const char *group_name, H5_index_t idx_type, if((udata.visited = H5SL_create(H5SL_TYPE_OBJ, 0.5, (size_t)16)) == NULL) HGOTO_ERROR(H5E_SYM, H5E_CANTCREATE, FAIL, "can't create skip list for visited objects") + /* Get the group's reference count and type */ + if(H5O_get_rc_and_type(&grp->oloc, dxpl_id, &rc, &otype) < 0) + HGOTO_ERROR(H5E_SYM, H5E_CANTGET, FAIL, "unable to get object info") + + /* If its ref count is > 1, we add it to the list of visited objects */ + /* (because it could come up again during traversal) */ + if(rc > 1) { + H5_obj_t *obj_pos; /* New object node for visited list */ + + /* Allocate new object "position" node */ + if((obj_pos = H5FL_MALLOC(H5_obj_t)) == NULL) + HGOTO_ERROR(H5E_SYM, H5E_NOSPACE, FAIL, "can't allocate object node") + + /* Construct unique "position" for this object */ + H5F_GET_FILENO(grp->oloc.file, obj_pos->fileno); + obj_pos->addr = grp->oloc.addr; + + /* Add to list of visited objects */ + if(H5SL_insert(udata.visited, obj_pos, obj_pos) < 0) + HGOTO_ERROR(H5E_SYM, H5E_CANTINSERT, FAIL, "can't insert object node into visited list") + } /* end if */ + /* Attempt to get the link info for this group */ if(H5G_obj_get_linfo(&(grp->oloc), &linfo, dxpl_id)) { /* Check for creation order tracking, if creation order index lookup requested */ @@ -1259,6 +1259,64 @@ done: /*------------------------------------------------------------------------- + * Function: H5Lvisit + * + * Purpose: Recursively visit all the links in a group and all + * the groups that are linked to from that group. Links within + * each group are visited according to the order within the + * specified index (unless the specified index does not exist for + * a particular group, then the "name" index is used). + * + * NOTE: Each _link_ reachable from the initial group will only be + * visited once. However, because an object may be reached from + * more than one link, the visitation may call the application's + * callback with more than one link that points to a particular + * _object_. + * + * Return: Success: The return value of the first operator that + * returns non-zero, or zero if all members were + * processed with no operator returning non-zero. + * + * Failure: Negative if something goes wrong within the + * library, or the negative value returned by one + * of the operators. + * + * Programmer: Quincey Koziol + * November 24 2007 + * + *------------------------------------------------------------------------- + */ +herr_t +H5Lvisit(hid_t grp_id, H5_index_t idx_type, H5_iter_order_t order, + H5L_iterate_t op, void *op_data) +{ + H5I_type_t id_type; /* Type of ID */ + herr_t ret_value; /* Return value */ + + FUNC_ENTER_API(H5Lvisit, FAIL) + H5TRACE5("e", "iIiIox*x", grp_id, idx_type, order, op, op_data); + + /* Check args */ + id_type = H5I_get_type(grp_id); + if(!(H5I_GROUP == id_type || H5I_FILE == id_type)) + HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid argument") + if(idx_type <= H5_INDEX_UNKNOWN || idx_type >= H5_INDEX_N) + HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid index type specified") + if(order <= H5_ITER_UNKNOWN || order >= H5_ITER_N) + HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid iteration order specified") + if(!op) + HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no callback operator specified") + + /* Call internal group visitation routine */ + if((ret_value = H5G_visit(grp_id, ".", idx_type, order, op, op_data, H5P_DEFAULT, H5AC_ind_dxpl_id)) < 0) + HGOTO_ERROR(H5E_SYM, H5E_BADITER, FAIL, "link visitation failed") + +done: + FUNC_LEAVE_API(ret_value) +} /* end H5Lvisit() */ + + +/*------------------------------------------------------------------------- * Function: H5Lvisit_by_name * * Purpose: Recursively visit all the links in a group and all diff --git a/src/H5Lpublic.h b/src/H5Lpublic.h index 0dc3f65..823b046 100644 --- a/src/H5Lpublic.h +++ b/src/H5Lpublic.h @@ -170,6 +170,8 @@ H5_DLL herr_t H5Literate(hid_t grp_id, H5_index_t idx_type, H5_DLL herr_t H5Literate_by_name(hid_t loc_id, const char *group_name, H5_index_t idx_type, H5_iter_order_t order, hsize_t *idx, H5L_iterate_t op, void *op_data, hid_t lapl_id); +H5_DLL herr_t H5Lvisit(hid_t grp_id, H5_index_t idx_type, H5_iter_order_t order, + H5L_iterate_t op, void *op_data); H5_DLL herr_t H5Lvisit_by_name(hid_t loc_id, const char *group_name, H5_index_t idx_type, H5_iter_order_t order, H5L_iterate_t op, void *op_data, hid_t lapl_id); |