diff options
Diffstat (limited to 'src/H5B2hdr.c')
| -rw-r--r-- | src/H5B2hdr.c | 163 |
1 files changed, 132 insertions, 31 deletions
diff --git a/src/H5B2hdr.c b/src/H5B2hdr.c index ef57186..489d047 100644 --- a/src/H5B2hdr.c +++ b/src/H5B2hdr.c @@ -79,6 +79,9 @@ /* Local Variables */ /*******************/ +/* Declare a free list to manage the H5B2_hdr_t struct */ +H5FL_DEFINE_STATIC(H5B2_hdr_t); + /* Declare a free list to manage B-tree node pages to/from disk */ H5FL_BLK_DEFINE_STATIC(node_page); @@ -214,57 +217,98 @@ done: /*------------------------------------------------------------------------- - * Function: H5B2_hdr_free + * Function: H5B2_hdr_alloc * - * Purpose: Free B-tree header info + * Purpose: Allocate B-tree header + * + * Return: Non-negative on success/Negative on failure + * + * Programmer: Quincey Koziol + * koziol@hdfgroup.org + * Oct 27 2009 + * + *------------------------------------------------------------------------- + */ +H5B2_hdr_t * +H5B2_hdr_alloc(void) +{ + H5B2_hdr_t *hdr = NULL; /* v2 B-tree header */ + H5B2_hdr_t *ret_value; /* Return value */ + + FUNC_ENTER_NOAPI_NOINIT(H5B2_hdr_alloc) + + /* Allocate space for the shared information */ + if(NULL == (hdr = H5FL_CALLOC(H5B2_hdr_t))) + HGOTO_ERROR(H5E_BTREE, H5E_CANTALLOC, NULL, "memory allocation failed for B-tree header") + + /* Assign non-zero information */ + hdr->root.addr = HADDR_UNDEF; + + /* Set return value */ + ret_value = hdr; + +done: + if(!ret_value && hdr) + if(H5B2_hdr_free(hdr) < 0) + HDONE_ERROR(H5E_BTREE, H5E_CANTFREE, NULL, "unable to free shared v2 B-tree info") + + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5B2_hdr_alloc() */ + + +/*------------------------------------------------------------------------- + * Function: H5HF_hdr_create + * + * Purpose: Create new fractal heap header * * Return: Non-negative on success/Negative on failure * * Programmer: Quincey Koziol * koziol@ncsa.uiuc.edu - * Feb 2 2005 + * Mar 21 2006 * *------------------------------------------------------------------------- */ -herr_t -H5B2_hdr_free(H5B2_hdr_t *hdr) +haddr_t +H5B2_hdr_create(H5F_t *f, hid_t dxpl_id, const H5B2_create_t *cparam) { - herr_t ret_value = SUCCEED; + H5B2_hdr_t *hdr = NULL; /* The new v2 B-tree header information */ + haddr_t ret_value; /* Return value */ - FUNC_ENTER_NOAPI_NOINIT(H5B2_hdr_free) + FUNC_ENTER_NOAPI_NOINIT(H5B2_hdr_create) - /* Sanity check */ - HDassert(hdr); + /* + * Check arguments. + */ + HDassert(f); + HDassert(cparam); - /* Free the B-tree node buffer */ - if(hdr->page) - (void)H5FL_BLK_FREE(node_page, hdr->page); + /* Allocate v2 B-tree header */ + if(NULL == (hdr = H5B2_hdr_alloc())) + HGOTO_ERROR(H5E_BTREE, H5E_CANTALLOC, HADDR_UNDEF, "allocation failed for B-tree header") - /* Free the array of offsets into the native key block */ - if(hdr->nat_off) - hdr->nat_off = H5FL_SEQ_FREE(size_t, hdr->nat_off); + /* Initialize shared B-tree info */ + if(H5B2_hdr_init(f, hdr, cparam, 0) < 0) + HGOTO_ERROR(H5E_BTREE, H5E_CANTINIT, HADDR_UNDEF, "can't create shared B-tree info") - /* Release the node info */ - if(hdr->node_info) { - unsigned u; /* Local index variable */ + /* Allocate space for the header on disk */ + if(HADDR_UNDEF == (hdr->addr = H5MF_alloc(f, H5FD_MEM_BTREE, dxpl_id, (hsize_t)H5B2_HEADER_SIZE(f)))) + HGOTO_ERROR(H5E_BTREE, H5E_CANTALLOC, HADDR_UNDEF, "file allocation failed for B-tree header") - /* Destroy free list factories */ - for(u = 0; u < (hdr->depth + 1); u++) { - if(hdr->node_info[u].nat_rec_fac) - if(H5FL_fac_term(hdr->node_info[u].nat_rec_fac) < 0) - HGOTO_ERROR(H5E_RESOURCE, H5E_CANTRELEASE, FAIL, "can't destroy node's native record block factory") - if(hdr->node_info[u].node_ptr_fac) - if(H5FL_fac_term(hdr->node_info[u].node_ptr_fac) < 0) - HGOTO_ERROR(H5E_RESOURCE, H5E_CANTRELEASE, FAIL, "can't destroy node's node pointer block factory") - } /* end for */ + /* Cache the new B-tree node */ + if(H5AC_set(f, dxpl_id, H5AC_BT2_HDR, hdr->addr, hdr, H5AC__NO_FLAGS_SET) < 0) + HGOTO_ERROR(H5E_BTREE, H5E_CANTINSERT, HADDR_UNDEF, "can't add B-tree header to cache") - /* Free the array of node info structs */ - hdr->node_info = H5FL_SEQ_FREE(H5B2_node_info_t, hdr->node_info); - } /* end if */ + /* Set address of v2 B-tree header to return */ + ret_value = hdr->addr; done: + if(!H5F_addr_defined(ret_value) && hdr) + if(H5B2_hdr_free(hdr) < 0) + HDONE_ERROR(H5E_BTREE, H5E_CANTRELEASE, HADDR_UNDEF, "unable to release v2 B-tree header") + FUNC_LEAVE_NOAPI(ret_value) -} /* end H5B2_hdr_free() */ +} /* end H5B2_hdr_create() */ /*------------------------------------------------------------------------- @@ -376,6 +420,63 @@ done: /*------------------------------------------------------------------------- + * Function: H5B2_hdr_free + * + * Purpose: Free B-tree header info + * + * Return: Non-negative on success/Negative on failure + * + * Programmer: Quincey Koziol + * koziol@ncsa.uiuc.edu + * Feb 2 2005 + * + *------------------------------------------------------------------------- + */ +herr_t +H5B2_hdr_free(H5B2_hdr_t *hdr) +{ + herr_t ret_value = SUCCEED; /* Return value */ + + FUNC_ENTER_NOAPI_NOINIT(H5B2_hdr_free) + + /* Sanity check */ + HDassert(hdr); + + /* Free the B-tree node buffer */ + if(hdr->page) + (void)H5FL_BLK_FREE(node_page, hdr->page); + + /* Free the array of offsets into the native key block */ + if(hdr->nat_off) + hdr->nat_off = H5FL_SEQ_FREE(size_t, hdr->nat_off); + + /* Release the node info */ + if(hdr->node_info) { + unsigned u; /* Local index variable */ + + /* Destroy free list factories */ + for(u = 0; u < (hdr->depth + 1); u++) { + if(hdr->node_info[u].nat_rec_fac) + if(H5FL_fac_term(hdr->node_info[u].nat_rec_fac) < 0) + HGOTO_ERROR(H5E_BTREE, H5E_CANTRELEASE, FAIL, "can't destroy node's native record block factory") + if(hdr->node_info[u].node_ptr_fac) + if(H5FL_fac_term(hdr->node_info[u].node_ptr_fac) < 0) + HGOTO_ERROR(H5E_BTREE, H5E_CANTRELEASE, FAIL, "can't destroy node's node pointer block factory") + } /* end for */ + + /* Free the array of node info structs */ + hdr->node_info = H5FL_SEQ_FREE(H5B2_node_info_t, hdr->node_info); + } /* end if */ + + /* Free B-tree header info */ + (void)H5FL_FREE(H5B2_hdr_t, hdr); + +done: + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5B2_hdr_free() */ + + +/*------------------------------------------------------------------------- * Function: H5B2_hdr_delete * * Purpose: Mark B-tree header for deletion |