diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/H5B2.c | 109 |
1 files changed, 102 insertions, 7 deletions
@@ -783,7 +783,11 @@ H5B2_split2(H5F_t *f, hid_t dxpl_id, unsigned depth, H5B2_node_ptr_t *curr_node_ unsigned *middle_nrec; /* Pointer to middle child # of records */ uint8_t *left_native, *right_native; /* Pointers to left & right children's native records */ uint8_t *middle_native; /* Pointer to middle child's native records */ + H5B2_node_ptr_t *left_node_ptrs=NULL, *right_node_ptrs=NULL;/* Pointers to childs' node pointer info */ + H5B2_node_ptr_t *middle_node_ptrs=NULL;/* Pointers to childs' node pointer info */ H5B2_shared_t *shared; /* B-tree's shared info */ + int left_moved_nrec=0, right_moved_nrec=0; /* Number of records moved, for internal split */ + int middle_moved_nrec=0; /* Number of records moved, for internal split */ herr_t ret_value=SUCCEED; /* Return value */ FUNC_ENTER_NOAPI_NOINIT(H5B2_split2) @@ -801,13 +805,56 @@ H5B2_split2(H5F_t *f, hid_t dxpl_id, unsigned depth, H5B2_node_ptr_t *curr_node_ /* Check for the kind of B-tree node to split */ if(depth>1) { -HDfprintf(stderr,"%s: splitting internal node! (need to handle node_ptrs)\n",FUNC); -HGOTO_ERROR(H5E_BTREE, H5E_CANTSPLIT, FAIL, "unable to split nodes") + H5B2_internal_t *left_internal; /* Pointer to left internal node */ + H5B2_internal_t *middle_internal; /* Pointer to middle internal node */ + H5B2_internal_t *right_internal; /* Pointer to right internal node */ + + /* Setup information for unlocking child nodes */ + child_class = H5AC_BT2_INT; + left_addr = internal->node_ptrs[idx].addr; + right_addr = internal->node_ptrs[idx+2].addr; + + /* Lock left & right B-tree child nodes */ + if (NULL == (left_internal = H5AC_protect(f, dxpl_id, child_class, left_addr, &(internal->node_ptrs[idx].node_nrec), internal->shared, H5AC_WRITE))) + HGOTO_ERROR(H5E_BTREE, H5E_CANTLOAD, FAIL, "unable to load B-tree internal node") + if (NULL == (right_internal = H5AC_protect(f, dxpl_id, child_class, right_addr, &(internal->node_ptrs[idx+2].node_nrec), internal->shared, H5AC_WRITE))) + HGOTO_ERROR(H5E_BTREE, H5E_CANTLOAD, FAIL, "unable to load B-tree internal node") + + /* Create new empty "middle" internal node */ + internal->node_ptrs[idx+1].all_nrec=internal->node_ptrs[idx+1].node_nrec=0; + if(H5B2_create_internal(f, dxpl_id, internal->shared, &(internal->node_ptrs[idx+1]))<0) + HGOTO_ERROR(H5E_BTREE, H5E_CANTINIT, FAIL, "unable to create new internal node") + + /* Setup information for unlocking middle child node */ + middle_addr = internal->node_ptrs[idx+1].addr; + + /* Lock "middle" internal node */ + if (NULL == (middle_internal = H5AC_protect(f, dxpl_id, child_class, middle_addr, &(internal->node_ptrs[idx+1].node_nrec), internal->shared, H5AC_WRITE))) + HGOTO_ERROR(H5E_BTREE, H5E_CANTLOAD, FAIL, "unable to load B-tree internal node") + + /* More setup for accessing child node information */ + left_child = left_internal; + middle_child = middle_internal; + right_child = right_internal; + left_nrec = &(left_internal->nrec); + middle_nrec = &(middle_internal->nrec); + right_nrec = &(right_internal->nrec); + left_native = left_internal->int_native; + middle_native = middle_internal->int_native; + right_native = right_internal->int_native; + left_node_ptrs = left_internal->node_ptrs; + middle_node_ptrs = middle_internal->node_ptrs; + right_node_ptrs = right_internal->node_ptrs; + + /* Mark child nodes as dirty now */ + left_internal->cache_info.is_dirty = TRUE; + middle_internal->cache_info.is_dirty = TRUE; + right_internal->cache_info.is_dirty = TRUE; } /* end if */ else { H5B2_leaf_t *left_leaf; /* Pointer to left leaf node */ - H5B2_leaf_t *right_leaf; /* Pointer to right leaf node */ H5B2_leaf_t *middle_leaf; /* Pointer to middle leaf node */ + H5B2_leaf_t *right_leaf; /* Pointer to right leaf node */ /* Setup information for unlocking child nodes */ child_class = H5AC_BT2_LEAF; @@ -877,6 +924,40 @@ HGOTO_ERROR(H5E_BTREE, H5E_CANTSPLIT, FAIL, "unable to split nodes") /* Copy record(s) from right node to proper location */ if(new_right_nrec<(*right_nrec-1)) HDmemcpy(H5B2_NAT_NREC(middle_native,shared,curr_middle_idx),H5B2_NAT_NREC(right_native,shared,0),shared->type->nrec_size*(*right_nrec-(new_right_nrec+1))); + + /* Copy node pointers from left and right nodes into middle node */ + if(depth>1) { + int moved_nrec; /* Total number of records moved, for internal redistrib */ + unsigned move_nptrs; /* Number of node pointers to move */ + unsigned u; /* Local index variable */ + + /* Start tracking the total number of records in middle node */ + middle_moved_nrec = new_middle_nrec; + + /* Copy node pointers from left node */ + move_nptrs = (*left_nrec-new_left_nrec); + HDmemcpy(&(middle_node_ptrs[0]),&(left_node_ptrs[new_left_nrec+1]),sizeof(H5B2_node_ptr_t)*move_nptrs); + + /* Count the number of records being moved from the left node */ + for(u=0, moved_nrec=0; u<move_nptrs; u++) + moved_nrec += middle_node_ptrs[u].all_nrec; + left_moved_nrec = -(moved_nrec+(*left_nrec-new_left_nrec)); + middle_moved_nrec += moved_nrec; + + /* Copy node pointers from right node */ + move_nptrs = (*right_nrec-new_right_nrec); + HDmemcpy(&(middle_node_ptrs[(*left_nrec-new_left_nrec)]),&(right_node_ptrs[0]),sizeof(H5B2_node_ptr_t)*move_nptrs); + + /* Count the number of records being moved from the right node */ + for(u=0, moved_nrec=0; u<move_nptrs; u++) + moved_nrec += right_node_ptrs[u].all_nrec; + right_moved_nrec = -(moved_nrec+(*right_nrec-new_right_nrec)); + middle_moved_nrec += moved_nrec; + + /* Slide node pointers in right node down */ + HDmemmove(&(right_node_ptrs[0]),&(right_node_ptrs[move_nptrs]),sizeof(H5B2_node_ptr_t)*(new_right_nrec+1)); + } /* end if */ + } /* end block */ /* Update # of records in middle node */ @@ -896,11 +977,25 @@ HGOTO_ERROR(H5E_BTREE, H5E_CANTSPLIT, FAIL, "unable to split nodes") *right_nrec = new_right_nrec; } /* end block */ + /* Update # of records in child nodes */ + internal->node_ptrs[idx].node_nrec = *left_nrec; + internal->node_ptrs[idx+1].node_nrec = *middle_nrec; + internal->node_ptrs[idx+2].node_nrec = *right_nrec; + + /* Update total # of records in child B-trees */ + if(depth>1) { + internal->node_ptrs[idx].all_nrec += left_moved_nrec; + internal->node_ptrs[idx+1].all_nrec = middle_moved_nrec; + internal->node_ptrs[idx+2].all_nrec += right_moved_nrec; + } /* end if */ + else { + internal->node_ptrs[idx].all_nrec = internal->node_ptrs[idx].node_nrec; + internal->node_ptrs[idx+1].all_nrec = internal->node_ptrs[idx+1].node_nrec; + internal->node_ptrs[idx+2].all_nrec = internal->node_ptrs[idx+2].node_nrec; + } /* end else */ + + /* Update # of records in parent node */ -/* Hmm, this value for 'all_rec' wont' be right for internal nodes... */ - internal->node_ptrs[idx].all_nrec = internal->node_ptrs[idx].node_nrec = *left_nrec; - internal->node_ptrs[idx+1].all_nrec = internal->node_ptrs[idx+1].node_nrec = *middle_nrec; - internal->node_ptrs[idx+2].all_nrec = internal->node_ptrs[idx+2].node_nrec = *right_nrec; internal->nrec++; /* Mark parent as dirty */ |