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ITS#7771 mdb_cursor_del0(): Fix xcursor tracking.

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This commit is contained in:
Hallvard Furuseth 2013-12-29 15:58:21 +01:00
parent 5adc46d1d2
commit ce2a0d4016
1 changed files with 11 additions and 10 deletions
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21
libraries/liblmdb/mdb.c
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@ -7361,7 +7361,7 @@ mdb_cursor_del0(MDB_cursor *mc, MDB_node *leaf)
if (rc != MDB_SUCCESS)
mc->mc_txn->mt_flags |= MDB_TXN_ERROR;
else {
MDB_cursor *m2;
MDB_cursor *m2, *m3;
MDB_dbi dbi = mc->mc_dbi;
mp = mc->mc_pg[mc->mc_top];
@ -7373,18 +7373,19 @@ mdb_cursor_del0(MDB_cursor *mc, MDB_node *leaf)
/* Adjust other cursors pointing to mp */
for (m2 = mc->mc_txn->mt_cursors[dbi]; m2; m2=m2->mc_next) {
if (m2 == mc || m2->mc_snum < mc->mc_snum)
m3 = (mc->mc_flags & C_SUB) ? &m2->mc_xcursor->mx_cursor : m2;
if (! (m2->mc_flags & m3->mc_flags & C_INITIALIZED))
continue;
if (!(m2->mc_flags & C_INITIALIZED))
if (m3 == mc || m3->mc_snum < mc->mc_snum)
continue;
if (m2->mc_pg[mc->mc_top] == mp) {
if (m2->mc_ki[mc->mc_top] >= ki) {
m2->mc_flags |= C_DEL;
if (m2->mc_ki[mc->mc_top] > ki)
m2->mc_ki[mc->mc_top]--;
if (m3->mc_pg[mc->mc_top] == mp) {
if (m3->mc_ki[mc->mc_top] >= ki) {
m3->mc_flags |= C_DEL;
if (m3->mc_ki[mc->mc_top] > ki)
m3->mc_ki[mc->mc_top]--;
}
if (m2->mc_ki[mc->mc_top] >= nkeys)
mdb_cursor_sibling(m2, 1);
if (m3->mc_ki[mc->mc_top] >= nkeys)
mdb_cursor_sibling(m3, 1);
}
}
mc->mc_flags |= C_DEL;