mirror of
https://github.com/MariaDB/server.git
synced 2025-01-22 14:54:20 +01:00
43 lines
1.9 KiB
C
43 lines
1.9 KiB
C
#ident "$Id$"
|
|
#ident "Copyright (c) 2007, 2008, 2009 Tokutek Inc. All rights reserved."
|
|
#ident "The technology is licensed by the Massachusetts Institute of Technology, Rutgers State University of New Jersey, and the Research Foundation of State University of New York at Stony Brook under United States of America Serial No. 11/760379 and to the patents and/or patent applications resulting from it."
|
|
|
|
static int brt_root_put_cmd_XY (BRT brt, BRT_MSG *md, TOKUTXN txn) {
|
|
int r;
|
|
if ((r = toku_read_and_pin_brt_header(brt->cf, &brt->h))) {
|
|
if (0) { died0: toku_unpin_brt_header(brt); }
|
|
return r;
|
|
}
|
|
CACHEKEY *rootp = toku_calculate_root_offset_pointer(brt);
|
|
if ((r=cachetable_get_and_pin(brt->cf, *rootp, &node_v, NULL,
|
|
toku_brtnode_flush_callback, toku_brtnode_fetch_callback, (void*)(long)brt->h->nodesize))) {
|
|
goto died0;
|
|
}
|
|
node=node_v;
|
|
if (0) {
|
|
died1:
|
|
cachetable_unpin(brt->cf, node->thisnodename, node->dirty, brtnodesize(node));
|
|
goto died0;
|
|
}
|
|
node->parent_brtnode = 0;
|
|
result = brtnode_put_cmd_XY(brt, node, cmd, txn);
|
|
// It's still pinned, and it may be too big or the fanout may be too large.
|
|
if (node->height>0 && node->u.n.n_children==TREE_FANOUT) {
|
|
// Must split it.
|
|
r = do_split_node(node, &nodea, &nodeb, &splitk); // On error: node is unmodified
|
|
if (r!=0) goto died1;
|
|
// node is garbage, and nodea and nodeb are pinned
|
|
r = brt_init_new_root(brt, nodea, nodeb, splitk, rootp); // On error: root is unmodified and nodea and nodeb are both unpinned
|
|
if (r!=0) goto died0;
|
|
// nodea and nodeb are unpinned, and the root has been fixed
|
|
// up to point at a new node (*rootp) containing two children
|
|
// (nodea and nodeb). nodea and nodeb are unpinned. *rootp is still pinned
|
|
node = *rootp;
|
|
}
|
|
// Now the fanout is small enough.
|
|
// But the node could still be too large.
|
|
if (toku_serialize_brtnode_size(node)>node->nodesize) {
|
|
|
|
}
|
|
|
|
}
|