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ITS#8062 also handle subcursors

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This commit is contained in:
Howard Chu 2015-04-16 00:19:40 +01:00
parent ddc4aa1aa3
commit b0032feb85
1 changed files with 13 additions and 3 deletions
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16
libraries/liblmdb/mdb.c
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@ -7790,13 +7790,23 @@ mdb_rebalance(MDB_cursor *mc)
if (mc->mc_ki[ptop] == 0) {
rc = mdb_page_merge(&mn, mc);
} else {
MDB_cursor dummy;
oldki += NUMKEYS(mn.mc_pg[mn.mc_top]);
mn.mc_ki[mn.mc_top] += mc->mc_ki[mn.mc_top] + 1;
/* We want mdb_rebalance to find mn when doing fixups */
mn.mc_next = mc->mc_txn->mt_cursors[mc->mc_dbi];
mc->mc_txn->mt_cursors[mc->mc_dbi] = &mn;
if (mc->mc_flags & C_SUB) {
dummy.mc_next = mc->mc_txn->mt_cursors[mc->mc_dbi];
mc->mc_txn->mt_cursors[mc->mc_dbi] = &dummy;
dummy.mc_xcursor = (MDB_xcursor *)&mn;
} else {
mn.mc_next = mc->mc_txn->mt_cursors[mc->mc_dbi];
mc->mc_txn->mt_cursors[mc->mc_dbi] = &mn;
}
rc = mdb_page_merge(mc, &mn);
mc->mc_txn->mt_cursors[mc->mc_dbi] = mn.mc_next;
if (mc->mc_flags & C_SUB)
mc->mc_txn->mt_cursors[mc->mc_dbi] = dummy.mc_next;
else
mc->mc_txn->mt_cursors[mc->mc_dbi] = mn.mc_next;
mdb_cursor_copy(&mn, mc);
}
mc->mc_flags &= ~C_EOF;