/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * Copyright by the Board of Trustees of the University of Illinois. * * All rights reserved. * * * * This file is part of HDF5. The full HDF5 copyright notice, including * * terms governing use, modification, and redistribution, is contained in * * the files COPYING and Copyright.html. COPYING can be found at the root * * of the source code distribution tree; Copyright.html can be found at the * * root level of an installed copy of the electronic HDF5 document set and * * is linked from the top-level documents page. It can also be found at * * http://hdf.ncsa.uiuc.edu/HDF5/doc/Copyright.html. If you do not have * * access to either file, you may request a copy from hdfhelp@ncsa.uiuc.edu. * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ /*------------------------------------------------------------------------- * * Created: H5Adense.c * Dec 4 2006 * Quincey Koziol * * Purpose: Routines for operating on "dense" attribute storage * for an object. * *------------------------------------------------------------------------- */ /****************/ /* Module Setup */ /****************/ #define H5A_PACKAGE /*suppress error about including H5Apkg */ #define H5O_PACKAGE /*suppress error about including H5Opkg */ /***********/ /* Headers */ /***********/ #include "H5private.h" /* Generic Functions */ #include "H5Apkg.h" /* Attributes */ #include "H5Eprivate.h" /* Error handling */ #include "H5Opkg.h" /* Object headers */ /****************/ /* Local Macros */ /****************/ /* Fractal heap creation parameters for "dense" attribute storage */ #define H5A_FHEAP_MAN_WIDTH 4 #define H5A_FHEAP_MAN_START_BLOCK_SIZE 512 #define H5A_FHEAP_MAN_MAX_DIRECT_SIZE (64 * 1024) #define H5A_FHEAP_MAN_MAX_INDEX 32 #define H5A_FHEAP_MAN_START_ROOT_ROWS 1 #define H5A_FHEAP_CHECKSUM_DBLOCKS TRUE #define H5A_FHEAP_MAX_MAN_SIZE (4 * 1024) /* v2 B-tree creation macros for 'name' field index */ #define H5A_NAME_BT2_NODE_SIZE 512 #define H5A_NAME_BT2_MERGE_PERC 40 #define H5A_NAME_BT2_SPLIT_PERC 100 /* v2 B-tree creation macros for 'corder' field index */ #define H5A_CORDER_BT2_NODE_SIZE 512 #define H5A_CORDER_BT2_MERGE_PERC 40 #define H5A_CORDER_BT2_SPLIT_PERC 100 /* Size of stack buffer for serialized attribute */ #define H5A_ATTR_BUF_SIZE 128 /******************/ /* Local Typedefs */ /******************/ /* * Data exchange structure for dense attribute storage. This structure is * passed through the v2 B-tree layer when modifying attributes. */ typedef struct H5A_bt2_od_wrt_t { /* downward */ H5HF_t *fheap; /* Fractal heap handle to operate on */ hid_t dxpl_id; /* DXPL for operation */ void *attr_buf; /* Pointer to encoded attribute to store */ size_t attr_size; /* Size of encode attribute */ } H5A_bt2_od_wrt_t; /* * Data exchange structure to pass through the v2 B-tree layer for the * H5B2_iterate function when iterating over densely stored attributes. */ typedef struct { /* downward (internal) */ H5F_t *f; /* Pointer to file that fractal heap is in */ hid_t dxpl_id; /* DXPL for operation */ H5HF_t *fheap; /* Fractal heap handle */ /* downward (from application) */ hid_t loc_id; /* Object ID for application callback */ unsigned skip; /* Number of attributes to skip */ unsigned count; /* The # of attributes visited */ H5A_operator_t op; /* Callback for each attribute */ void *op_data; /* Callback data for each attribute */ /* upward */ int op_ret; /* Return value from callback */ } H5A_bt2_ud_it_t; /* * Data exchange structure to pass through the fractal heap layer for the * H5HF_op function when iterating over densely stored attributes. */ typedef struct { /* downward (internal) */ H5F_t *f; /* Pointer to file that fractal heap is in */ hid_t dxpl_id; /* DXPL for operation */ /* upward */ H5A_t *attr; /* Copy of attribute */ } H5A_fh_ud_it_t; /********************/ /* Package Typedefs */ /********************/ /********************/ /* Local Prototypes */ /********************/ /*********************/ /* Package Variables */ /*********************/ /*****************************/ /* Library Private Variables */ /*****************************/ /*******************/ /* Local Variables */ /*******************/ /* Declare a free list to manage the serialized attribute information */ H5FL_BLK_DEFINE(ser_attr); /*------------------------------------------------------------------------- * Function: H5A_dense_create * * Purpose: Creates dense attribute storage structures for an object * * Return: Non-negative on success/Negative on failure * * Programmer: Quincey Koziol * koziol@hdfgroup.org * Dec 4 2006 * *------------------------------------------------------------------------- */ herr_t H5A_dense_create(H5F_t *f, hid_t dxpl_id, H5O_t *oh) { H5HF_create_t fheap_cparam; /* Fractal heap creation parameters */ H5HF_t *fheap; /* Fractal heap handle */ size_t fheap_id_len; /* Fractal heap ID length */ size_t bt2_rrec_size; /* v2 B-tree raw record size */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_NOAPI(H5A_dense_create, FAIL) /* * Check arguments. */ HDassert(f); HDassert(oh); /* Set fractal heap creation parameters */ /* XXX: Give some control of these to applications? */ HDmemset(&fheap_cparam, 0, sizeof(fheap_cparam)); fheap_cparam.managed.width = H5A_FHEAP_MAN_WIDTH; fheap_cparam.managed.start_block_size = H5A_FHEAP_MAN_START_BLOCK_SIZE; fheap_cparam.managed.max_direct_size = H5A_FHEAP_MAN_MAX_DIRECT_SIZE; fheap_cparam.managed.max_index = H5A_FHEAP_MAN_MAX_INDEX; fheap_cparam.managed.start_root_rows = H5A_FHEAP_MAN_START_ROOT_ROWS; fheap_cparam.checksum_dblocks = H5A_FHEAP_CHECKSUM_DBLOCKS; fheap_cparam.max_man_size = H5A_FHEAP_MAX_MAN_SIZE; /* Create fractal heap for storing attributes */ if(NULL == (fheap = H5HF_create(f, dxpl_id, &fheap_cparam))) HGOTO_ERROR(H5E_ATTR, H5E_CANTINIT, FAIL, "unable to create fractal heap") /* Retrieve the heap's address in the file */ if(H5HF_get_heap_addr(fheap, &(oh->attr_fheap_addr)) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTGETSIZE, FAIL, "can't get fractal heap address") #ifdef QAK HDfprintf(stderr, "%s: oh->attr_fheap_addr = %a\n", FUNC, oh->attr_fheap_addr); #endif /* QAK */ /* Retrieve the heap's ID length in the file */ if(H5HF_get_id_len(fheap, &fheap_id_len) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTGETSIZE, FAIL, "can't get fractal heap ID length") HDassert(fheap_id_len == H5A_DENSE_FHEAP_ID_LEN); #ifdef QAK HDfprintf(stderr, "%s: fheap_id_len = %Zu\n", FUNC, fheap_id_len); #endif /* QAK */ /* Close the fractal heap */ if(H5HF_close(fheap, dxpl_id) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CLOSEERROR, FAIL, "can't close fractal heap") /* Create the name index v2 B-tree */ bt2_rrec_size = 4 + /* Name's hash value */ fheap_id_len; /* Fractal heap ID */ if(H5B2_create(f, dxpl_id, H5A_BT2_NAME, (size_t)H5A_NAME_BT2_NODE_SIZE, bt2_rrec_size, H5A_NAME_BT2_SPLIT_PERC, H5A_NAME_BT2_MERGE_PERC, &(oh->name_bt2_addr)) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTINIT, FAIL, "unable to create v2 B-tree for name index") #ifdef QAK HDfprintf(stderr, "%s: oh->name_bt2_addr = %a\n", FUNC, oh->name_bt2_addr); #endif /* QAK */ /* XXX: fix me */ #ifdef NOT_YET /* Check if we should create a creation order index v2 B-tree */ if(linfo->index_corder) { /* Create the creation order index v2 B-tree */ bt2_rrec_size = 8 + /* Creation order value */ fheap_id_len; /* Fractal heap ID */ if(H5B2_create(f, dxpl_id, H5A_BT2_CORDER, (size_t)H5A_CORDER_BT2_NODE_SIZE, bt2_rrec_size, H5A_CORDER_BT2_SPLIT_PERC, H5A_CORDER_BT2_MERGE_PERC, &(linfo->corder_bt2_addr)) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTINIT, FAIL, "unable to create v2 B-tree for name index") #ifdef QAK HDfprintf(stderr, "%s: linfo->corder_bt2_addr = %a\n", FUNC, linfo->corder_bt2_addr); #endif /* QAK */ } /* end if */ #endif /* NOT_YET */ done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5A_dense_create() */ /*------------------------------------------------------------------------- * Function: H5A_dense_insert * * Purpose: Insert an attribute into dense storage structures for an object * * Return: Non-negative on success/Negative on failure * * Programmer: Quincey Koziol * koziol@hdfgroup.org * Dec 4 2006 * *------------------------------------------------------------------------- */ herr_t H5A_dense_insert(H5F_t *f, hid_t dxpl_id, const H5O_t *oh, unsigned mesg_flags, const H5A_t *attr) { H5A_bt2_ud_ins_t udata; /* User data for v2 B-tree insertion */ H5HF_t *fheap = NULL; /* Fractal heap handle */ size_t attr_size; /* Size of serialized attribute in the heap */ uint8_t attr_buf[H5A_ATTR_BUF_SIZE]; /* Buffer for serializing attribute */ void *attr_ptr = NULL; /* Pointer to serialized attribute */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_NOAPI(H5A_dense_insert, FAIL) /* * Check arguments. */ HDassert(f); HDassert(oh); HDassert(attr); /* Check for insertin shared attribute */ if(mesg_flags & H5O_MSG_FLAG_SHARED) { /* XXX: fix me */ HDfprintf(stderr, "%s: inserting shared attributes in dense storage not supported yet!\n", FUNC); HGOTO_ERROR(H5E_ATTR, H5E_UNSUPPORTED, FAIL, "inserting shared attributes in dense storage not supported yet") } /* end if */ /* Find out the size of buffer needed for serialized attribute */ if((attr_size = H5O_msg_raw_size(f, H5O_ATTR_ID, attr)) == 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTGETSIZE, FAIL, "can't get attribute size") /* Allocate space for serialized attribute, if necessary */ if(attr_size > sizeof(attr_buf)) { if(NULL == (attr_ptr = H5FL_BLK_MALLOC(ser_attr, attr_size))) HGOTO_ERROR(H5E_ATTR, H5E_NOSPACE, FAIL, "memory allocation failed") } /* end if */ else attr_ptr = attr_buf; /* Create serialized form of attribute */ if(H5O_msg_encode(f, H5O_ATTR_ID, attr_ptr, attr) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTENCODE, FAIL, "can't encode attribute") /* Open the fractal heap */ if(NULL == (fheap = H5HF_open(f, dxpl_id, oh->attr_fheap_addr))) HGOTO_ERROR(H5E_ATTR, H5E_CANTOPENOBJ, FAIL, "unable to open fractal heap") /* Insert the serialized attribute into the fractal heap */ if(H5HF_insert(fheap, dxpl_id, attr_size, attr_ptr, udata.id) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTINSERT, FAIL, "unable to insert attribute into fractal heap") /* Create the callback information for v2 B-tree record insertion */ udata.common.f = f; udata.common.dxpl_id = dxpl_id; udata.common.fheap = fheap; udata.common.name = attr->name; udata.common.name_hash = H5_checksum_lookup3(attr->name, HDstrlen(attr->name), 0); udata.common.flags = mesg_flags; udata.common.corder = -1; /* XXX: None yet */ udata.common.found_op = NULL; udata.common.found_op_data = NULL; /* udata.id already set in H5HF_insert() call */ /* Insert attribute into 'name' tracking v2 B-tree */ if(H5B2_insert(f, dxpl_id, H5A_BT2_NAME, oh->name_bt2_addr, &udata) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTINSERT, FAIL, "unable to insert record into v2 B-tree") done: /* Release resources */ if(fheap && H5HF_close(fheap, dxpl_id) < 0) HDONE_ERROR(H5E_ATTR, H5E_CLOSEERROR, FAIL, "can't close fractal heap") if(attr_ptr && attr_ptr != attr_buf) H5FL_BLK_FREE(ser_attr, attr_ptr); FUNC_LEAVE_NOAPI(ret_value) } /* end H5A_dense_insert() */ /*------------------------------------------------------------------------- * Function: H5A_dense_write_cb * * Purpose: v2 B-tree modify callback to update the data for an attribute * * Return: Success: 0 * Failure: 1 * * Programmer: Quincey Koziol * Tuesday, December 5, 2006 * *------------------------------------------------------------------------- */ static herr_t H5A_dense_write_cb(void *_record, void *_op_data, hbool_t *changed) { H5A_dense_bt2_name_rec_t *record = (H5A_dense_bt2_name_rec_t *)_record; /* Record from B-tree */ H5A_bt2_od_wrt_t *op_data = (H5A_bt2_od_wrt_t *)_op_data; /* "op data" from v2 B-tree modify */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_NOAPI_NOINIT(H5A_dense_write_cb) /* * Check arguments. */ HDassert(record); HDassert(op_data); HDassert(changed); /* Check for modifying shared attribute */ if(record->flags & H5O_MSG_FLAG_SHARED) { /* XXX: fix me */ HDfprintf(stderr, "%s: modifying shared attributes in dense storage not supported yet!\n", FUNC); HGOTO_ERROR(H5E_ATTR, H5E_UNSUPPORTED, FAIL, "modifying shared attributes in dense storage not supported yet") } /* end if */ /* XXX: Add "write" routine (or allow "op" routine to modify values) to * fractal heap code */ /* Sanity check */ #ifndef NDEBUG { size_t obj_len; /* Length of existing encoded attribute */ if(H5HF_get_obj_len(op_data->fheap, op_data->dxpl_id, record->id, &obj_len) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTGETSIZE, FAIL, "can't get object size") HDassert(obj_len == op_data->attr_size); } #endif /* NDEBUG */ /* Remove existing attribute from heap */ if(H5HF_remove(op_data->fheap, op_data->dxpl_id, record->id) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTREMOVE, FAIL, "unable to remove attribute from heap") /* Insert new encoded attribute into heap */ if(H5HF_insert(op_data->fheap, op_data->dxpl_id, op_data->attr_size, op_data->attr_buf, record->id) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTINSERT, FAIL, "unable to insert attribute in heap") /* Indicate that the B-tree record has changed */ /* (XXX:We won't need this once we can write to an existing fractal heap object) */ *changed = TRUE; done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5A_dense_write_cb() */ /*------------------------------------------------------------------------- * Function: H5A_dense_write * * Purpose: Modify an attribute in dense storage structures for an object * * Return: Non-negative on success/Negative on failure * * Programmer: Quincey Koziol * koziol@hdfgroup.org * Dec 4 2006 * *------------------------------------------------------------------------- */ herr_t H5A_dense_write(H5F_t *f, hid_t dxpl_id, const H5O_t *oh, const H5A_t *attr) { H5A_bt2_ud_common_t udata; /* User data for v2 B-tree modify */ H5A_bt2_od_wrt_t op_data; /* "Op data" for v2 B-tree modify */ H5HF_t *fheap = NULL; /* Fractal heap handle */ size_t attr_size; /* Size of serialized attribute in the heap */ uint8_t attr_buf[H5A_ATTR_BUF_SIZE]; /* Buffer for serializing attribute */ void *attr_ptr = NULL; /* Pointer to serialized attribute */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_NOAPI(H5A_dense_write, FAIL) /* * Check arguments. */ HDassert(f); HDassert(oh); HDassert(attr); /* Find out the size of buffer needed for serialized attribute */ if((attr_size = H5O_msg_raw_size(f, H5O_ATTR_ID, attr)) == 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTGETSIZE, FAIL, "can't get attribute size") /* Allocate space for serialized attribute, if necessary */ if(attr_size > sizeof(attr_buf)) { if(NULL == (attr_ptr = H5FL_BLK_MALLOC(ser_attr, attr_size))) HGOTO_ERROR(H5E_ATTR, H5E_NOSPACE, FAIL, "memory allocation failed") } /* end if */ else attr_ptr = attr_buf; /* Create serialized form of attribute */ if(H5O_msg_encode(f, H5O_ATTR_ID, attr_ptr, attr) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTENCODE, FAIL, "can't encode attribute") /* Open the fractal heap */ if(NULL == (fheap = H5HF_open(f, dxpl_id, oh->attr_fheap_addr))) HGOTO_ERROR(H5E_ATTR, H5E_CANTOPENOBJ, FAIL, "unable to open fractal heap") /* Create the "udata" information for v2 B-tree record modify */ udata.f = f; udata.dxpl_id = dxpl_id; udata.fheap = fheap; udata.name = attr->name; udata.name_hash = H5_checksum_lookup3(attr->name, HDstrlen(attr->name), 0); udata.flags = 0; udata.corder = -1; /* XXX: None yet */ udata.found_op = NULL; udata.found_op_data = NULL; /* Create the "op_data" for the v2 B-tree record modify */ op_data.fheap = fheap; op_data.dxpl_id = dxpl_id; op_data.attr_buf = attr_ptr; op_data.attr_size = attr_size; /* Modify attribute through 'name' tracking v2 B-tree */ if(H5B2_modify(f, dxpl_id, H5A_BT2_NAME, oh->name_bt2_addr, &udata, H5A_dense_write_cb, &op_data) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTINSERT, FAIL, "unable to modify record in v2 B-tree") done: /* Release resources */ if(fheap && H5HF_close(fheap, dxpl_id) < 0) HDONE_ERROR(H5E_ATTR, H5E_CLOSEERROR, FAIL, "can't close fractal heap") if(attr_ptr && attr_ptr != attr_buf) H5FL_BLK_FREE(ser_attr, attr_ptr); FUNC_LEAVE_NOAPI(ret_value) } /* end H5A_dense_write() */ /*------------------------------------------------------------------------- * Function: H5A_dense_iterate_fh_cb * * Purpose: Callback for fractal heap operator, to make user's callback * when iterating over attributes * * Return: SUCCEED/FAIL * * Programmer: Quincey Koziol * koziol@hdfgroup.org * Dec 5 2006 * *------------------------------------------------------------------------- */ static herr_t H5A_dense_iterate_fh_cb(const void *obj, size_t UNUSED obj_len, void *_udata) { H5A_fh_ud_it_t *udata = (H5A_fh_ud_it_t *)_udata; /* User data for fractal heap 'op' callback */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_NOAPI_NOINIT(H5A_dense_iterate_fh_cb) /* Decode attribute information & keep a copy */ /* (we make a copy instead of calling the user/library callback directly in * this routine because this fractal heap 'op' callback routine is called * with the direct block protected and if the callback routine invokes an * HDF5 routine, it could attempt to re-protect that direct block for the * heap, causing the HDF5 routine called to fail) */ if(NULL == (udata->attr = H5O_msg_decode(udata->f, udata->dxpl_id, H5O_ATTR_ID, obj))) HGOTO_ERROR(H5E_ATTR, H5E_CANTDECODE, FAIL, "can't decode attribute") done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5A_dense_iterate_fh_cb() */ /*------------------------------------------------------------------------- * Function: H5A_dense_iterate_bt2_cb * * Purpose: v2 B-tree callback for dense attribute storage iterator * * Return: H5_ITER_ERROR/H5_ITER_CONT/H5_ITER_STOP * * Programmer: Quincey Koziol * koziol@hdfgroup.org * Dec 5 2006 * *------------------------------------------------------------------------- */ static herr_t H5A_dense_iterate_bt2_cb(const void *_record, void *_bt2_udata) { const H5A_dense_bt2_name_rec_t *record = (const H5A_dense_bt2_name_rec_t *)_record; /* Record from B-tree */ H5A_bt2_ud_it_t *bt2_udata = (H5A_bt2_ud_it_t *)_bt2_udata; /* User data for callback */ herr_t ret_value = H5_ITER_CONT; /* Return value */ FUNC_ENTER_NOAPI_NOINIT(H5A_dense_iterate_bt2_cb) /* Check for skipping attributes */ if(bt2_udata->skip > 0) --bt2_udata->skip; else { H5A_fh_ud_it_t fh_udata; /* User data for fractal heap 'op' callback */ /* Check for iterating over shared attribute */ if(record->flags & H5O_MSG_FLAG_SHARED) { /* XXX: fix me */ HDfprintf(stderr, "%s: iterating over shared attributes in dense storage not supported yet!\n", FUNC); HGOTO_ERROR(H5E_ATTR, H5E_UNSUPPORTED, H5_ITER_ERROR, "iterating over shared attributes in dense storage not supported yet") } /* end if */ /* Prepare user data for callback */ /* down */ fh_udata.f = bt2_udata->f; fh_udata.dxpl_id = bt2_udata->dxpl_id; /* Call fractal heap 'op' routine, to copy the attribute information */ if(H5HF_op(bt2_udata->fheap, bt2_udata->dxpl_id, record->id, H5A_dense_iterate_fh_cb, &fh_udata) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTOPERATE, H5_ITER_ERROR, "heap op callback failed") /* Make the callback */ ret_value = (bt2_udata->op)(bt2_udata->loc_id, fh_udata.attr->name, bt2_udata->op_data); /* Release the space allocated for the attribute */ H5O_msg_free(H5O_ATTR_ID, fh_udata.attr); } /* end else */ /* Increment the number of attributes passed through */ /* (whether we skipped them or not) */ bt2_udata->count++; /* Check for callback failure and pass along return value */ if(ret_value < 0) HERROR(H5E_ATTR, H5E_CANTNEXT, "iteration operator failed"); done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5A_dense_iterate_bt2_cb() */ /*------------------------------------------------------------------------- * Function: H5A_dense_iterate * * Purpose: Iterate over attributes in dense storage structures for an object * * Return: Non-negative on success/Negative on failure * * Programmer: Quincey Koziol * koziol@hdfgroup.org * Dec 5 2006 * *------------------------------------------------------------------------- */ herr_t H5A_dense_iterate(H5F_t *f, hid_t dxpl_id, hid_t loc_id, haddr_t attr_fheap_addr, haddr_t name_bt2_addr, unsigned skip, unsigned *last_attr, H5A_operator_t op, void *op_data) { H5A_bt2_ud_it_t udata; /* User data for iterator callback */ H5HF_t *fheap = NULL; /* Fractal heap handle */ herr_t ret_value; /* Return value */ FUNC_ENTER_NOAPI(H5A_dense_iterate, FAIL) /* * Check arguments. */ HDassert(f); HDassert(H5F_addr_defined(attr_fheap_addr)); HDassert(H5F_addr_defined(name_bt2_addr)); HDassert(op); /* Check for skipping too many links */ if(skip > 0) { hsize_t nrec; /* # of records in v2 B-tree */ /* Retrieve # of records in name index */ /* (# of records in all indices the same) */ if(H5B2_get_nrec(f, dxpl_id, H5A_BT2_NAME, name_bt2_addr, &nrec) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTGET, FAIL, "can't retrieve # of records in index") /* Check for bad starting index */ if((hsize_t)skip >= nrec) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid index specified") } /* end if */ /* Open the fractal heap */ if(NULL == (fheap = H5HF_open(f, dxpl_id, attr_fheap_addr))) HGOTO_ERROR(H5E_ATTR, H5E_CANTOPENOBJ, FAIL, "unable to open fractal heap") /* Construct the user data for v2 B-tree iterator callback */ udata.f = f; udata.dxpl_id = dxpl_id; udata.fheap = fheap; udata.loc_id = loc_id; udata.skip = skip; udata.count = 0; udata.op = op; udata.op_data = op_data; /* Iterate over the records in the v2 B-tree's "native" order */ /* (by hash of name) */ if((ret_value = H5B2_iterate(f, dxpl_id, H5A_BT2_NAME, name_bt2_addr, H5A_dense_iterate_bt2_cb, &udata)) < 0) HERROR(H5E_ATTR, H5E_BADITER, "attribute iteration failed"); /* Update last attribute looked at */ if(last_attr) *last_attr = udata.count; done: /* Release resources */ if(fheap && H5HF_close(fheap, dxpl_id) < 0) HDONE_ERROR(H5E_ATTR, H5E_CLOSEERROR, FAIL, "can't close fractal heap") FUNC_LEAVE_NOAPI(ret_value) } /* end H5A_dense_iterate() */ /*------------------------------------------------------------------------- * Function: H5A_dense_delete * * Purpose: Delete all dense storage structures for attributes on an object * * Return: Non-negative on success/Negative on failure * * Programmer: Quincey Koziol * koziol@hdfgroup.org * Dec 6 2006 * *------------------------------------------------------------------------- */ herr_t H5A_dense_delete(H5F_t *f, hid_t dxpl_id, H5O_t *oh) { herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_NOAPI(H5A_dense_delete, FAIL) /* * Check arguments. */ HDassert(f); HDassert(oh); /* XXX: iterate through name index v2 B-tree and delete shared attributes */ /* XXX: we need to delete attributes that use shared & committed components also */ /* Delete name index v2 B-tree */ if(H5B2_delete(f, dxpl_id, H5A_BT2_NAME, oh->name_bt2_addr, NULL, NULL) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTDELETE, FAIL, "unable to delete v2 B-tree for name index") oh->name_bt2_addr = HADDR_UNDEF; /* Delete fractal heap */ if(H5HF_delete(f, dxpl_id, oh->attr_fheap_addr) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTDELETE, FAIL, "unable to delete fractal heap") oh->attr_fheap_addr = HADDR_UNDEF; done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5A_dense_delete() */