diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/H5B2.c | 139 | ||||
| -rw-r--r-- | src/H5B2private.h | 2 |
2 files changed, 135 insertions, 6 deletions
@@ -98,6 +98,8 @@ static herr_t H5B2_neighbor_leaf(H5F_t *f, hid_t dxpl_id, H5RC_t *bt2_shared, static herr_t H5B2_neighbor_internal(H5F_t *f, hid_t dxpl_id, H5RC_t *bt2_shared, unsigned depth, H5B2_node_ptr_t *curr_node_ptr, void *neighbor_loc, H5B2_compare_t comp, void *udata, H5B2_found_t op, void *op_data); +static herr_t H5B2_delete_node(H5F_t *f, hid_t dxpl_id, H5RC_t *bt2_shared, + unsigned depth, const H5B2_node_ptr_t *curr_node); #ifdef H5B2_DEBUG static herr_t H5B2_assert_leaf(H5B2_shared_t *shared, H5B2_leaf_t *leaf); static herr_t H5B2_assert_leaf2(H5B2_shared_t *shared, H5B2_leaf_t *leaf, H5B2_leaf_t *leaf2); @@ -1970,7 +1972,7 @@ H5B2_merge2(H5F_t *f, hid_t dxpl_id, unsigned depth, H5B2_node_ptr_t *curr_node_ /* Delete right node & remove from cache */ if (H5MF_xfree(f, H5FD_MEM_BTREE, dxpl_id, right_addr, (hsize_t)shared->node_size)<0) HGOTO_ERROR(H5E_BTREE, H5E_CANTFREE, FAIL, "unable to free B-tree leaf node") - if (H5AC_unprotect(f, dxpl_id, child_class, right_addr, right_child, H5C__DELETED_FLAG) < 0) + if (H5AC_unprotect(f, dxpl_id, child_class, right_addr, right_child, H5AC__DELETED_FLAG) < 0) HGOTO_ERROR(H5E_BTREE, H5E_CANTUNPROTECT, FAIL, "unable to release B-tree child node") done: @@ -2200,7 +2202,7 @@ H5B2_merge3(H5F_t *f, hid_t dxpl_id, unsigned depth, H5B2_node_ptr_t *curr_node_ /* Delete right node & remove from cache */ if (H5MF_xfree(f, H5FD_MEM_BTREE, dxpl_id, right_addr, (hsize_t)shared->node_size)<0) HGOTO_ERROR(H5E_BTREE, H5E_CANTFREE, FAIL, "unable to free B-tree leaf node") - if (H5AC_unprotect(f, dxpl_id, child_class, right_addr, right_child, H5C__DELETED_FLAG) < 0) + if (H5AC_unprotect(f, dxpl_id, child_class, right_addr, right_child, H5AC__DELETED_FLAG) < 0) HGOTO_ERROR(H5E_BTREE, H5E_CANTUNPROTECT, FAIL, "unable to release B-tree child node") done: @@ -3291,7 +3293,7 @@ H5B2_remove_leaf(H5F_t *f, hid_t dxpl_id, H5RC_t *bt2_shared, { H5B2_leaf_t *leaf; /* Pointer to leaf node */ haddr_t leaf_addr=HADDR_UNDEF; /* Leaf address on disk */ - unsigned leaf_unprotect_flags=H5C__NO_FLAGS_SET; /* Flags for unprotecting leaf node */ + unsigned leaf_unprotect_flags=H5AC__NO_FLAGS_SET; /* Flags for unprotecting leaf node */ H5B2_shared_t *shared; /* Pointer to B-tree's shared information */ int cmp; /* Comparison value of records */ unsigned idx; /* Location of record which matches key */ @@ -3343,7 +3345,7 @@ H5B2_remove_leaf(H5F_t *f, hid_t dxpl_id, H5RC_t *bt2_shared, HGOTO_ERROR(H5E_BTREE, H5E_CANTFREE, FAIL, "unable to free B-tree leaf node") /* Let the cache know that the object is deleted */ - leaf_unprotect_flags = H5C__DELETED_FLAG; + leaf_unprotect_flags = H5AC__DELETED_FLAG; /* Reset address of parent node pointer */ curr_node_ptr->addr = HADDR_UNDEF; @@ -3384,7 +3386,7 @@ H5B2_remove_internal(H5F_t *f, hid_t dxpl_id, H5RC_t *bt2_shared, H5B2_internal_t *internal; /* Pointer to internal node */ haddr_t internal_addr; /* Address of internal node */ H5B2_shared_t *shared; /* Pointer to B-tree's shared information */ - unsigned internal_unprotect_flags=H5C__NO_FLAGS_SET; /* Flags for unprotecting internal node */ + unsigned internal_unprotect_flags=H5AC__NO_FLAGS_SET; /* Flags for unprotecting internal node */ unsigned idx; /* Location of record which matches key */ size_t merge_nrec; /* Number of records to merge node at */ hbool_t collapsed_root = FALSE; /* Whether the root was collapsed */ @@ -3429,7 +3431,7 @@ H5B2_remove_internal(H5F_t *f, hid_t dxpl_id, H5RC_t *bt2_shared, HGOTO_ERROR(H5E_BTREE, H5E_CANTFREE, FAIL, "unable to free B-tree leaf node") /* Let the cache know that the object is deleted */ - internal_unprotect_flags = H5C__DELETED_FLAG; + internal_unprotect_flags = H5AC__DELETED_FLAG; /* Reset information in parent node pointer */ curr_node_ptr->addr = internal->node_ptrs[0].addr; @@ -3919,6 +3921,131 @@ done: FUNC_LEAVE_NOAPI(ret_value) } /* H5B2_neighbor() */ + +/*------------------------------------------------------------------------- + * Function: H5B2_delete_node + * + * Purpose: Iterate over all the nodes in a B-tree node deleting them + * after they no longer have any children + * + * Return: Value from callback, non-negative on success, negative on error + * + * Programmer: Quincey Koziol + * koziol@ncsa.uiuc.edu + * Mar 9 2005 + * + *------------------------------------------------------------------------- + */ +static herr_t +H5B2_delete_node(H5F_t *f, hid_t dxpl_id, H5RC_t *bt2_shared, unsigned depth, + const H5B2_node_ptr_t *curr_node) +{ + H5B2_shared_t *shared; /* Pointer to B-tree's shared information */ + const H5AC_class_t *curr_node_class=NULL; /* Pointer to current node's class info */ + void *node=NULL; /* Pointers to current node */ + herr_t ret_value = SUCCEED; + + FUNC_ENTER_NOAPI(H5B2_delete_node, FAIL) + + /* Check arguments. */ + HDassert(f); + HDassert(bt2_shared); + HDassert(curr_node); + + /* Get the pointer to the shared B-tree info */ + shared=H5RC_GET_OBJ(bt2_shared); + HDassert(shared); + + if(depth>0) { + H5B2_internal_t *internal; /* Pointer to internal node */ + unsigned u; /* Local index */ + + /* Lock the current B-tree node */ + if (NULL == (internal = H5AC_protect(f, dxpl_id, H5AC_BT2_INT, curr_node->addr, &(curr_node->node_nrec), bt2_shared, H5AC_WRITE))) + HGOTO_ERROR(H5E_BTREE, H5E_CANTPROTECT, FAIL, "unable to load B-tree internal node") + + /* Set up information about current node */ + curr_node_class = H5AC_BT2_INT; + node = internal; + + /* Descend into children */ + for(u=0; u<internal->nrec+1; u++) + if(H5B2_delete_node(f, dxpl_id, bt2_shared, depth-1, &(internal->node_ptrs[u]))<0) + HGOTO_ERROR(H5E_BTREE, H5E_CANTLIST, FAIL, "node descent failed") + } /* end if */ + else { + H5B2_leaf_t *leaf; /* Pointer to leaf node */ + + /* Lock the current B-tree node */ + if (NULL == (leaf = H5AC_protect(f, dxpl_id, H5AC_BT2_LEAF, curr_node->addr, &(curr_node->node_nrec), bt2_shared, H5AC_WRITE))) + HGOTO_ERROR(H5E_BTREE, H5E_CANTPROTECT, FAIL, "unable to load B-tree leaf node") + + /* Set up information about current node */ + curr_node_class = H5AC_BT2_LEAF; + node = leaf; + } /* end else */ + + /* Release space for current B-tree node on disk */ + if (H5MF_xfree(f, H5FD_MEM_BTREE, dxpl_id, curr_node->addr, (hsize_t)shared->node_size)<0) + HGOTO_ERROR(H5E_BTREE, H5E_CANTFREE, FAIL, "unable to free B-tree node") + +done: + /* Unlock & delete current node */ + if(node) + if (H5AC_unprotect(f, dxpl_id, curr_node_class, curr_node->addr, node, H5AC__DELETED_FLAG) < 0) + HDONE_ERROR(H5E_BTREE, H5E_CANTUNPROTECT, FAIL, "unable to release B-tree node") + + FUNC_LEAVE_NOAPI(ret_value) +} /* H5B2_delete_node() */ + + +/*------------------------------------------------------------------------- + * Function: H5B2_delete + * + * Purpose: Delete an entire B-tree from a file. + * + * Return: Non-negative on success, negative on failure. + * + * Programmer: Quincey Koziol + * koziol@ncsa.uiuc.edu + * Mar 9 2005 + * + *------------------------------------------------------------------------- + */ +herr_t +H5B2_delete(H5F_t *f, hid_t dxpl_id, const H5B2_class_t *type, haddr_t addr) +{ + H5B2_t *bt2=NULL; /* Pointer to the B-tree header */ + herr_t ret_value = SUCCEED; + + FUNC_ENTER_NOAPI(H5B2_delete, FAIL) + + /* Check arguments. */ + HDassert(f); + HDassert(type); + HDassert(H5F_addr_defined(addr)); + + /* Look up the B-tree header */ + if (NULL == (bt2 = H5AC_protect(f, dxpl_id, H5AC_BT2_HDR, addr, type, NULL, H5AC_WRITE))) + HGOTO_ERROR(H5E_BTREE, H5E_CANTPROTECT, FAIL, "unable to load B-tree header") + + /* Delete all nodes in B-tree */ + if(H5F_addr_defined(bt2->root.addr)) + if(H5B2_delete_node(f, dxpl_id, bt2->shared, bt2->depth, &bt2->root)<0) + HGOTO_ERROR(H5E_BTREE, H5E_CANTDELETE, FAIL, "unable to delete B-tree nodes") + + /* Release space for B-tree node on disk */ + if (H5MF_xfree(f, H5FD_MEM_BTREE, dxpl_id, addr, (hsize_t)H5B2_HEADER_SIZE(f))<0) + HGOTO_ERROR(H5E_BTREE, H5E_CANTFREE, FAIL, "unable to free B-tree leaf node") + +done: + /* Release the B-tree header info */ + if (bt2 && H5AC_unprotect(f, dxpl_id, H5AC_BT2_HDR, addr, bt2, H5AC__DELETED_FLAG) < 0) + HDONE_ERROR(H5E_BTREE, H5E_CANTUNPROTECT, FAIL, "unable to delete B-tree header info") + + FUNC_LEAVE_NOAPI(ret_value) +} /* H5B2_neighbor() */ + #ifdef H5B2_DEBUG /*------------------------------------------------------------------------- diff --git a/src/H5B2private.h b/src/H5B2private.h index 7598c1f..a61fa64 100644 --- a/src/H5B2private.h +++ b/src/H5B2private.h @@ -115,6 +115,8 @@ H5_DLL herr_t H5B2_remove(H5F_t *f, hid_t dxpl_id, const H5B2_class_t *type, haddr_t addr, void *udata); H5_DLL herr_t H5B2_get_nrec(H5F_t *f, hid_t dxpl_id, const H5B2_class_t *type, haddr_t addr, hsize_t *nrec); +H5_DLL herr_t H5B2_delete(H5F_t *f, hid_t dxpl_id, const H5B2_class_t *type, + haddr_t addr); #endif /* _H5B2private_H */ |