diff options
Diffstat (limited to 'src/H5Adense.c')
| -rw-r--r-- | src/H5Adense.c | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/src/H5Adense.c b/src/H5Adense.c index 7cacf13..b374e79 100644 --- a/src/H5Adense.c +++ b/src/H5Adense.c @@ -249,6 +249,100 @@ done: /*------------------------------------------------------------------------- + * Function: H5A_dense_open_cb + * + * Purpose: Callback when an attribute is located in an index + * + * Return: Non-negative on success/Negative on failure + * + * Programmer: Quincey Koziol + * koziol@hdfgroup.org + * Dec 11 2006 + * + *------------------------------------------------------------------------- + */ +static herr_t +H5A_dense_open_cb(const void *_attr, void *_user_attr) +{ + const H5A_t *attr = (const H5A_t *)_attr; /* Record from B-tree */ + H5A_t **user_attr = (H5A_t **)_user_attr; /* User data from v2 B-tree attribute lookup */ + herr_t ret_value = SUCCEED; /* Return value */ + + FUNC_ENTER_NOAPI_NOINIT(H5A_dense_open_cb) + + /* + * Check arguments. + */ + HDassert(attr); + HDassert(user_attr); + + /* Copy attribute information */ + if(NULL == (*user_attr = H5A_copy(NULL, attr))) + HGOTO_ERROR(H5E_ATTR, H5E_CANTCOPY, H5_ITER_ERROR, "can't copy attribute") + +done: + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5A_dense_open_cb() */ + + +/*------------------------------------------------------------------------- + * Function: H5A_dense_open + * + * Purpose: Open an attribute in dense storage structures for an object + * + * Return: Non-negative on success/Negative on failure + * + * Programmer: Quincey Koziol + * koziol@hdfgroup.org + * Dec 11 2006 + * + *------------------------------------------------------------------------- + */ +H5A_t * +H5A_dense_open(H5F_t *f, hid_t dxpl_id, const H5O_t *oh, const char *name) +{ + H5A_bt2_ud_common_t udata; /* User data for v2 B-tree modify */ + H5HF_t *fheap = NULL; /* Fractal heap handle */ + H5A_t *ret_value = NULL; /* Return value */ + + FUNC_ENTER_NOAPI(H5A_dense_open, NULL) + + /* + * Check arguments. + */ + HDassert(f); + HDassert(oh); + HDassert(name); + + /* Open the fractal heap */ + if(NULL == (fheap = H5HF_open(f, dxpl_id, oh->attr_fheap_addr))) + HGOTO_ERROR(H5E_ATTR, H5E_CANTOPENOBJ, NULL, "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 = name; + udata.name_hash = H5_checksum_lookup3(name, HDstrlen(name), 0); + udata.flags = 0; + udata.corder = -1; /* XXX: None yet */ + udata.found_op = H5A_dense_open_cb; /* v2 B-tree comparison callback */ + udata.found_op_data = &ret_value; + + /* Find & copy the attribute in the 'name' index */ + if(H5B2_find(f, dxpl_id, H5A_BT2_NAME, oh->name_bt2_addr, &udata, NULL, NULL) < 0) + HGOTO_ERROR(H5E_ATTR, H5E_NOTFOUND, NULL, "can't locate attribute in name index") + +done: + /* Release resources */ + if(fheap && H5HF_close(fheap, dxpl_id) < 0) + HDONE_ERROR(H5E_ATTR, H5E_CLOSEERROR, NULL, "can't close fractal heap") + + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5A_dense_open() */ + + +/*------------------------------------------------------------------------- * Function: H5A_dense_insert * * Purpose: Insert an attribute into dense storage structures for an object |