diff options
Diffstat (limited to 'src/H5B2int.c')
| -rw-r--r-- | src/H5B2int.c | 401 |
1 files changed, 401 insertions, 0 deletions
diff --git a/src/H5B2int.c b/src/H5B2int.c index b8c9634..363d903 100644 --- a/src/H5B2int.c +++ b/src/H5B2int.c @@ -1513,6 +1513,62 @@ done: /*------------------------------------------------------------------------- + * Function: H5B2__insert_hdr + * + * Purpose: Adds a new record to the B-tree. + * + * Return: Non-negative on success/Negative on failure + * + * Programmer: Quincey Koziol + * koziol@hdfgroup.org + * Dec 23 2015 + * + *------------------------------------------------------------------------- + */ +herr_t +H5B2__insert_hdr(H5B2_hdr_t *hdr, hid_t dxpl_id, void *udata) +{ + herr_t ret_value = SUCCEED; /* Return value */ + + FUNC_ENTER_PACKAGE + + /* Check arguments. */ + HDassert(hdr); + HDassert(udata); + + /* Check if the root node is allocated yet */ + if(!H5F_addr_defined(hdr->root.addr)) { + /* Create root node as leaf node in B-tree */ + if(H5B2__create_leaf(hdr, dxpl_id, &(hdr->root)) < 0) + HGOTO_ERROR(H5E_BTREE, H5E_CANTINIT, FAIL, "unable to create root node") + } /* end if */ + /* Check if we need to split the root node (equiv. to a 1->2 node split) */ + else if(hdr->root.node_nrec == hdr->node_info[hdr->depth].split_nrec) { + /* Split root node */ + if(H5B2__split_root(hdr, dxpl_id) < 0) + HGOTO_ERROR(H5E_BTREE, H5E_CANTSPLIT, FAIL, "unable to split root node") + } /* end if */ + + /* Attempt to insert record into B-tree */ + if(hdr->depth > 0) { + if(H5B2__insert_internal(hdr, dxpl_id, hdr->depth, NULL, &hdr->root, H5B2_POS_ROOT, udata) < 0) + HGOTO_ERROR(H5E_BTREE, H5E_CANTINSERT, FAIL, "unable to insert record into B-tree internal node") + } /* end if */ + else { + if(H5B2__insert_leaf(hdr, dxpl_id, &hdr->root, H5B2_POS_ROOT, udata) < 0) + HGOTO_ERROR(H5E_BTREE, H5E_CANTINSERT, FAIL, "unable to insert record into B-tree leaf node") + } /* end else */ + + /* Mark B-tree header as dirty */ + if(H5B2__hdr_dirty(hdr) < 0) + HGOTO_ERROR(H5E_BTREE, H5E_CANTMARKDIRTY, FAIL, "unable to mark B-tree header dirty") + +done: + FUNC_LEAVE_NOAPI(ret_value) +} /* H5B2__insert_hdr() */ + + +/*------------------------------------------------------------------------- * Function: H5B2__insert_leaf * * Purpose: Adds a new record to a B-tree leaf node. @@ -1644,6 +1700,9 @@ H5B2__insert_internal(H5B2_hdr_t *hdr, hid_t dxpl_id, uint16_t depth, if(NULL == (internal = H5B2__protect_internal(hdr, dxpl_id, curr_node_ptr->addr, curr_node_ptr->node_nrec, depth, H5AC__NO_FLAGS_SET))) HGOTO_ERROR(H5E_BTREE, H5E_CANTPROTECT, FAIL, "unable to protect B-tree internal node") + /* Sanity check number of records */ + HDassert(internal->nrec == curr_node_ptr->node_nrec); + /* Split or redistribute child node pointers, if necessary */ { int cmp; /* Comparison value of records */ @@ -1755,6 +1814,348 @@ done: /*------------------------------------------------------------------------- + * Function: H5B2__update_leaf + * + * Purpose: Insert or modify a record in a B-tree leaf node. + * If the record exists already, it is modified as if H5B2_modify + * was called). If it doesn't exist, it is inserted as if + * H5B2_insert was called. + * + * Return: Non-negative on success/Negative on failure + * + * Programmer: Quincey Koziol + * koziol@hdfgroup.org + * Dec 23 2015 + * + *------------------------------------------------------------------------- + */ +herr_t +H5B2__update_leaf(H5B2_hdr_t *hdr, hid_t dxpl_id, H5B2_node_ptr_t *curr_node_ptr, + H5B2_update_status_t *status, H5B2_nodepos_t curr_pos, void *udata, + H5B2_modify_t op, void *op_data) +{ + H5B2_leaf_t *leaf; /* Pointer to leaf node */ + unsigned leaf_flags = H5AC__NO_FLAGS_SET; /* Flags for unprotecting the leaf node */ + int cmp = -1; /* Comparison value of records */ + unsigned idx; /* Location of record which matches key */ + herr_t ret_value = SUCCEED; /* Return value */ + + FUNC_ENTER_PACKAGE + + /* Check arguments. */ + HDassert(hdr); + HDassert(curr_node_ptr); + HDassert(H5F_addr_defined(curr_node_ptr->addr)); + + /* Lock current B-tree node */ + if(NULL == (leaf = H5B2__protect_leaf(hdr, dxpl_id, curr_node_ptr->addr, curr_node_ptr->node_nrec, H5AC__NO_FLAGS_SET))) + HGOTO_ERROR(H5E_BTREE, H5E_CANTPROTECT, FAIL, "unable to protect B-tree leaf node") + + /* Sanity check number of records */ + HDassert(curr_node_ptr->all_nrec == curr_node_ptr->node_nrec); + HDassert(leaf->nrec == curr_node_ptr->node_nrec); + + /* Check for inserting into empty leaf */ + if(leaf->nrec == 0) + idx = 0; + else { + /* Find correct location to insert this record */ + cmp = H5B2__locate_record(hdr->cls, leaf->nrec, hdr->nat_off, leaf->leaf_native, udata, &idx); + + /* Check for inserting a record */ + if(0 != cmp) { + /* Check if the leaf node is full */ + if(curr_node_ptr->node_nrec == hdr->node_info[0].split_nrec) { + /* Indicate that the leaf is full, but we need to insert */ + *status = H5B2_UPDATE_INSERT_CHILD_FULL; + + /* Let calling routine handle insertion */ + HGOTO_DONE(SUCCEED) + } /* end if */ + + /* Adjust index to leave room for record to insert */ + if(cmp > 0) + idx++; + + /* Make room for new record */ + if(idx < leaf->nrec) + HDmemmove(H5B2_LEAF_NREC(leaf, hdr, idx + 1), H5B2_LEAF_NREC(leaf, hdr, idx), hdr->cls->nrec_size * (leaf->nrec - idx)); + } /* end if */ + } /* end else */ + + /* Check for modifying existing record */ + if(0 == cmp) { + hbool_t changed = FALSE; /* Whether the 'modify' callback changed the record */ + + /* Make callback for current record */ + if((op)(H5B2_LEAF_NREC(leaf, hdr, idx), op_data, &changed) < 0) { + /* Make certain that the callback didn't modify the value if it failed */ + HDassert(changed == FALSE); + + HGOTO_ERROR(H5E_BTREE, H5E_CANTMODIFY, FAIL, "'modify' callback failed for B-tree update operation") + } /* end if */ + + /* Mark the node as dirty if it changed */ + leaf_flags |= (changed ? H5AC__DIRTIED_FLAG : 0); + + /* Indicate that the record was modified */ + *status = H5B2_UPDATE_MODIFY_DONE; + } /* end if */ + else { + /* Must have a leaf node with enough space to insert a record now */ + HDassert(curr_node_ptr->node_nrec < hdr->node_info[0].max_nrec); + + /* Make callback to store record in native form */ + if((hdr->cls->store)(H5B2_LEAF_NREC(leaf, hdr, idx), udata) < 0) + HGOTO_ERROR(H5E_BTREE, H5E_CANTINSERT, FAIL, "unable to insert record into leaf node") + + /* Mark the node as dirty if it changed */ + leaf_flags |= H5AC__DIRTIED_FLAG; + + /* Indicate that the record was inserted */ + *status = H5B2_UPDATE_INSERT_DONE; + + /* Update record count for node pointer to current node */ + curr_node_ptr->all_nrec++; + curr_node_ptr->node_nrec++; + + /* Update record count for current node */ + leaf->nrec++; + } /* end else */ + + /* Check for new record being the min or max for the tree */ + /* (Don't use 'else' for the idx check, to allow for root leaf node) */ + if(H5B2_POS_MIDDLE != curr_pos) { + if(idx == 0) { + if(H5B2_POS_LEFT == curr_pos || H5B2_POS_ROOT == curr_pos) { + if(hdr->min_native_rec == NULL) + if(NULL == (hdr->min_native_rec = (uint8_t *)HDmalloc(hdr->cls->nrec_size))) + HGOTO_ERROR(H5E_BTREE, H5E_CANTALLOC, FAIL, "memory allocation failed for v2 B-tree min record info") + HDmemcpy(hdr->min_native_rec, H5B2_LEAF_NREC(leaf, hdr, idx), hdr->cls->nrec_size); + } /* end if */ + } /* end if */ + if(idx == (unsigned)(leaf->nrec - 1)) { + if(H5B2_POS_RIGHT == curr_pos || H5B2_POS_ROOT == curr_pos) { + if(hdr->max_native_rec == NULL) + if(NULL == (hdr->max_native_rec = (uint8_t *)HDmalloc(hdr->cls->nrec_size))) + HGOTO_ERROR(H5E_BTREE, H5E_CANTALLOC, FAIL, "memory allocation failed for v2 B-tree max record info") + HDmemcpy(hdr->max_native_rec, H5B2_LEAF_NREC(leaf, hdr, idx), hdr->cls->nrec_size); + } /* end if */ + } /* end if */ + } /* end if */ + +done: + /* Release the B-tree leaf node */ + if(leaf && H5AC_unprotect(hdr->f, dxpl_id, H5AC_BT2_LEAF, curr_node_ptr->addr, leaf, leaf_flags) < 0) + HDONE_ERROR(H5E_BTREE, H5E_CANTUNPROTECT, FAIL, "unable to release leaf B-tree node") + + FUNC_LEAVE_NOAPI(ret_value) +} /* H5B2__update_leaf() */ + + +/*------------------------------------------------------------------------- + * Function: H5B2__update_internal + * + * Purpose: Insert or modify a record in a B-tree leaf node. + * If the record exists already, it is modified as if H5B2_modify + * was called). If it doesn't exist, it is inserted as if + * H5B2_insert was called. + * + * Return: Non-negative on success/Negative on failure + * + * Programmer: Quincey Koziol + * koziol@hdfgroup.org + * Dec 24 2015 + * + *------------------------------------------------------------------------- + */ +herr_t +H5B2__update_internal(H5B2_hdr_t *hdr, hid_t dxpl_id, uint16_t depth, + unsigned *parent_cache_info_flags_ptr, H5B2_node_ptr_t *curr_node_ptr, + H5B2_update_status_t *status, H5B2_nodepos_t curr_pos, void *udata, + H5B2_modify_t op, void *op_data) +{ + H5B2_internal_t *internal = NULL; /* Pointer to internal node */ + unsigned internal_flags = H5AC__NO_FLAGS_SET; + int cmp; /* Comparison value of records */ + unsigned idx; /* Location of record which matches key */ + H5B2_nodepos_t next_pos = H5B2_POS_MIDDLE; /* Position of node */ + herr_t ret_value = SUCCEED; /* Return value */ + + FUNC_ENTER_PACKAGE + + /* Check arguments. */ + HDassert(hdr); + HDassert(depth > 0); + HDassert(curr_node_ptr); + HDassert(H5F_addr_defined(curr_node_ptr->addr)); + + /* Lock current B-tree node */ + if(NULL == (internal = H5B2__protect_internal(hdr, dxpl_id, curr_node_ptr->addr, curr_node_ptr->node_nrec, depth, H5AC__NO_FLAGS_SET))) + HGOTO_ERROR(H5E_BTREE, H5E_CANTPROTECT, FAIL, "unable to protect B-tree internal node") + + /* Sanity check number of records */ + HDassert(internal->nrec == curr_node_ptr->node_nrec); + + /* Locate node pointer for child */ + cmp = H5B2__locate_record(hdr->cls, internal->nrec, hdr->nat_off, internal->int_native, udata, &idx); + + /* Check for modifying existing record */ + if(0 == cmp) { + hbool_t changed = FALSE; /* Whether the 'modify' callback changed the record */ + + /* Make callback for current record */ + if((op)(H5B2_INT_NREC(internal, hdr, idx), op_data, &changed) < 0) { + /* Make certain that the callback didn't modify the value if it failed */ + HDassert(changed == FALSE); + + HGOTO_ERROR(H5E_BTREE, H5E_CANTMODIFY, FAIL, "'modify' callback failed for B-tree update operation") + } /* end if */ + + /* Mark the node as dirty if it changed */ + internal_flags |= (changed ? H5AC__DIRTIED_FLAG : 0); + + /* Indicate that the record was modified */ + *status = H5B2_UPDATE_MODIFY_DONE; + } /* end if */ + else { + /* Adjust index to leave room for node to insert */ + if(cmp > 0) + idx++; + + /* Check if this node is left/right-most */ + if(H5B2_POS_MIDDLE != curr_pos) { + if(idx == 0) { + if(H5B2_POS_LEFT == curr_pos || H5B2_POS_ROOT == curr_pos) + next_pos = H5B2_POS_LEFT; + } /* end if */ + else if(idx == internal->nrec) { + if(H5B2_POS_RIGHT == curr_pos || H5B2_POS_ROOT == curr_pos) + next_pos = H5B2_POS_RIGHT; + } /* end else */ + } /* end if */ + + /* Attempt to update record in child */ + if(depth > 1) { + if(H5B2__update_internal(hdr, dxpl_id, (uint16_t)(depth - 1), &internal_flags, &internal->node_ptrs[idx], status, next_pos, udata, op, op_data) < 0) + HGOTO_ERROR(H5E_BTREE, H5E_CANTUPDATE, FAIL, "unable to update record in internal B-tree node") + } /* end if */ + else { + if(H5B2__update_leaf(hdr, dxpl_id, &internal->node_ptrs[idx], status, next_pos, udata, op, op_data) < 0) + HGOTO_ERROR(H5E_BTREE, H5E_CANTUPDATE, FAIL, "unable to update record in leaf B-tree node") + } /* end else */ + + /* Take actions based on child's status report */ + switch(*status) { + case H5B2_UPDATE_MODIFY_DONE: + /* No action */ + break; + + case H5B2_UPDATE_INSERT_DONE: + /* Mark node as dirty */ + internal_flags |= H5AC__DIRTIED_FLAG; + + /* Update total record count for node pointer to current node */ + curr_node_ptr->all_nrec++; + break; + + case H5B2_UPDATE_INSERT_CHILD_FULL: + /* Split/redistribute this node */ + if(internal->nrec == hdr->node_info[depth].split_nrec) { + hbool_t could_split = FALSE; /* Whether the child node could split */ + +#ifdef QAK +HDfprintf(stderr, "%s: idx = %u, internal->nrec = %u\n", FUNC, idx, internal->nrec); +HDfprintf(stderr, "%s: hdr->node_info[%u].split_nrec = %u\n", FUNC, (unsigned)depth, (unsigned)hdr->node_info[depth].split_nrec); +HDfprintf(stderr, "%s: hdr->node_info[%u].split_nrec = %u\n", FUNC, (unsigned)(depth - 1), (unsigned)hdr->node_info[depth - 1].split_nrec); +#endif /* QAK */ + if(idx == 0) { /* Left-most child */ +#ifdef QAK +HDfprintf(stderr, "%s: Left-most child\n", FUNC); +HDfprintf(stderr, "%s: internal->node_ptrs[%u].node_nrec = %u\n", FUNC, (unsigned)idx, (unsigned)internal->node_ptrs[idx].node_nrec); +HDfprintf(stderr, "%s: internal->node_ptrs[%u].node_nrec = %u\n", FUNC, (unsigned)(idx + 1), (unsigned)internal->node_ptrs[idx + 1].node_nrec); +#endif /* QAK */ + /* Check for left-most child and its neighbor being close to full */ + if((internal->node_ptrs[idx].node_nrec + internal->node_ptrs[idx + 1].node_nrec) + >= ((hdr->node_info[depth - 1].split_nrec * 2) - 1)) + could_split = TRUE; + } /* end if */ + else if(idx == internal->nrec) { /* Right-most child */ +#ifdef QAK +HDfprintf(stderr, "%s: Right-most child\n", FUNC); +HDfprintf(stderr, "%s: internal->node_ptrs[%u].node_nrec = %u\n", FUNC, (unsigned)(idx - 1), (unsigned)internal->node_ptrs[idx - 1].node_nrec); +HDfprintf(stderr, "%s: internal->node_ptrs[%u].node_nrec = %u\n", FUNC, (unsigned)idx, (unsigned)internal->node_ptrs[idx].node_nrec); +#endif /* QAK */ + /* Check for right-most child and its neighbor being close to full */ + if((internal->node_ptrs[idx - 1].node_nrec + internal->node_ptrs[idx].node_nrec) + >= ((hdr->node_info[depth - 1].split_nrec * 2) - 1)) + could_split = TRUE; + } /* end else-if */ + else { /* Middle child */ +#ifdef QAK +HDfprintf(stderr, "%s: Middle child\n", FUNC); +HDfprintf(stderr, "%s: internal->node_ptrs[%u].node_nrec = %u\n", FUNC, (unsigned)(idx - 1), (unsigned)internal->node_ptrs[idx - 1].node_nrec); +HDfprintf(stderr, "%s: internal->node_ptrs[%u].node_nrec = %u\n", FUNC, (unsigned)idx, (unsigned)internal->node_ptrs[idx].node_nrec); +HDfprintf(stderr, "%s: internal->node_ptrs[%u].node_nrec = %u\n", FUNC, (unsigned)(idx + 1), (unsigned)internal->node_ptrs[idx + 1].node_nrec); +#endif /* QAK */ + /* Check for middle child and its left neighbor being close to full */ + if((internal->node_ptrs[idx - 1].node_nrec + internal->node_ptrs[idx].node_nrec) + >= ((hdr->node_info[depth - 1].split_nrec * 2) - 1)) + could_split = TRUE; + /* Check for middle child and its right neighbor being close to full */ + else if((internal->node_ptrs[idx].node_nrec + internal->node_ptrs[idx + 1].node_nrec) + >= ((hdr->node_info[depth - 1].split_nrec * 2) - 1)) + could_split = TRUE; + } /* end if */ + + /* If this node is full and the child node insertion could + * cause a split, punt back up to caller, leaving the + * "insert child full" status. + */ + if(could_split) { + /* Release the internal B-tree node */ + if(H5AC_unprotect(hdr->f, dxpl_id, H5AC_BT2_INT, curr_node_ptr->addr, internal, internal_flags) < 0) + HGOTO_ERROR(H5E_BTREE, H5E_CANTUNPROTECT, FAIL, "unable to release internal B-tree node") + internal = NULL; + +#ifdef QAK +HDfprintf(stderr, "%s: Punting back to caller\n", FUNC); +#endif /* QAK */ + /* Punt back to caller */ + HGOTO_DONE(SUCCEED); + } /* end if */ + } /* end if */ + + /* Release the internal B-tree node */ + if(H5AC_unprotect(hdr->f, dxpl_id, H5AC_BT2_INT, curr_node_ptr->addr, internal, internal_flags) < 0) + HGOTO_ERROR(H5E_BTREE, H5E_CANTUNPROTECT, FAIL, "unable to release internal B-tree node") + internal = NULL; + + /* Indicate that the record was inserted */ + *status = H5B2_UPDATE_INSERT_DONE; + + /* Dodge sideways into inserting a record into this node */ + if(H5B2__insert_internal(hdr, dxpl_id, depth, parent_cache_info_flags_ptr, curr_node_ptr, curr_pos, udata) < 0) + HGOTO_ERROR(H5E_BTREE, H5E_CANTINSERT, FAIL, "unable to insert record into internal B-tree node") + break; + + case H5B2_UPDATE_UNKNOWN: + default: + HDassert(0 && "Invalid update status"); + HGOTO_ERROR(H5E_BTREE, H5E_CANTUPDATE, FAIL, "invalid update status") + } /* end switch */ + } /* end else */ + +done: + /* Release the internal B-tree node */ + if(internal && H5AC_unprotect(hdr->f, dxpl_id, H5AC_BT2_INT, curr_node_ptr->addr, internal, internal_flags) < 0) + HDONE_ERROR(H5E_BTREE, H5E_CANTUNPROTECT, FAIL, "unable to release internal B-tree node") + + FUNC_LEAVE_NOAPI(ret_value) +} /* H5B2__update_internal() */ + + +/*------------------------------------------------------------------------- * Function: H5B2__create_leaf * * Purpose: Creates empty leaf node of a B-tree and update node pointer |