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39 lines
1.5 KiB
C
39 lines
1.5 KiB
C
static int brt_root_put_cmd_XY (BRT brt, BRT_CMD *md, TOKUTXN txn) {
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int r;
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if ((r = toku_read_and_pin_brt_header(brt->cf, &brt->h))) {
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if (0) { died0: toku_unpin_brt_header(brt); }
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return r;
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}
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CACHEKEY *rootp = toku_calculate_root_offset_pointer(brt);
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if ((r=cachetable_get_and_pin(brt->cf, *rootp, &node_v, NULL,
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toku_brtnode_flush_callback, toku_brtnode_fetch_callback, (void*)(long)brt->h->nodesize))) {
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goto died0;
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}
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node=node_v;
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if (0) {
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died1:
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cachetable_unpin(brt->cf, node->thisnodename, node->dirty, brtnodesize(node));
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goto died0;
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}
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node->parent_brtnode = 0;
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result = brtnode_put_cmd_XY(brt, node, cmd, txn);
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// It's still pinned, and it may be too big or the fanout may be too large.
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if (node->height>0 && node->u.n.n_children==TREE_FANOUT) {
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// Must split it.
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r = do_split_node(node, &nodea, &nodeb, &splitk); // On error: node is unmodified
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if (r!=0) goto died1;
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// node is garbage, and nodea and nodeb are pinned
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r = brt_init_new_root(brt, nodea, nodeb, splitk, rootp); // On error: root is unmodified and nodea and nodeb are both unpinned
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if (r!=0) goto died0;
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// nodea and nodeb are unpinned, and the root has been fixed
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// up to point at a new node (*rootp) containing two children
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// (nodea and nodeb). nodea and nodeb are unpinned. *rootp is still pinned
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node = *rootp;
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}
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// Now the fanout is small enough.
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// But the node could still be too large.
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if (toku_serialize_brtnode_size(node)>node->nodesize) {
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}
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}
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