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mdbx: fix LEAF2-pages handling in mdb_cursor_count().

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This commit is contained in:
Leo Yuriev 2017-01-31 18:30:32 +03:00
parent 7bf9d381ee
commit d3518bf75b
2 changed files with 12 additions and 23 deletions
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13
mdb.c
View File

@ -7914,16 +7914,13 @@ mdb_cursor_count(MDB_cursor *mc, size_t *countp)
return MDB_NOTFOUND;
}
if (mc->mc_xcursor == NULL || IS_LEAF2(mp)) {
*countp = 1;
} else {
*countp = 1;
if (mc->mc_xcursor != NULL) {
MDB_node *leaf = NODEPTR(mp, mc->mc_ki[mc->mc_top]);
if (!F_ISSET(leaf->mn_flags, F_DUPDATA))
*countp = 1;
else if (unlikely(!(mc->mc_xcursor->mx_cursor.mc_flags & C_INITIALIZED)))
return EINVAL;
else
if (F_ISSET(leaf->mn_flags, F_DUPDATA)) {
mdb_cassert(mc, mc->mc_xcursor && (mc->mc_xcursor->mx_cursor.mc_flags & C_INITIALIZED));
*countp = mc->mc_xcursor->mx_db.md_entries;
}
}
#else
if (unlikely(mc->mc_xcursor == NULL))

22
mdbx.c
View File

@ -547,21 +547,13 @@ mdbx_get_ex(MDB_txn *txn, MDB_dbi dbi,
}
if (values_count) {
if (mc.mc_xcursor == NULL)
*values_count = 1;
else {
MDB_page *mp = mc.mc_pg[mc.mc_top];
if (IS_LEAF2(mp))
*values_count = 1;
else {
MDB_node *leaf = NODEPTR(mp, mc.mc_ki[mc.mc_top]);
if (!F_ISSET(leaf->mn_flags, F_DUPDATA))
*values_count = 1;
else {
mdb_tassert(txn, mc.mc_xcursor == &mx);
mdb_tassert(txn, mx.mx_cursor.mc_flags & C_INITIALIZED);
*values_count = mx.mx_db.md_entries;
}
*values_count = 1;
if (mc.mc_xcursor != NULL) {
MDB_node *leaf = NODEPTR(mc.mc_pg[mc.mc_top], mc.mc_ki[mc.mc_top]);
if (F_ISSET(leaf->mn_flags, F_DUPDATA)) {
mdb_tassert(txn, mc.mc_xcursor == &mx
&& (mx.mx_cursor.mc_flags & C_INITIALIZED));
*values_count = mx.mx_db.md_entries;
}
}
}