MDEV-7728 - Spiral patch 032_mariadb-10.0.15.scale_registering_xid.diffbb-mdev7728

XID cache is now based on lock-free hash.
Also fixed lf_hash_destroy() to call alloc destructor.

Note that previous implementation had race condition when thread was accessing
XA owned by different thread. This new implementation doesn't fix it either.

1 files changed, 2 insertions, 2 deletions

diff --git a/sql/handler.h b/sql/handler.h
index 5ef92088df5..5ab67c045ec 100644
--- a/sql/handler.h
+++ b/sql/handler.h
@@ -612,11 +612,11 @@ struct xid_t {
     return sizeof(formatID)+sizeof(gtrid_length)+sizeof(bqual_length)+
            gtrid_length+bqual_length;
   }
-  uchar *key()
+  uchar *key() const
   {
     return (uchar *)&gtrid_length;
   }
-  uint key_length()
+  uint key_length() const
   {
     return sizeof(gtrid_length)+sizeof(bqual_length)+gtrid_length+bqual_length;
   }