diff options
Diffstat (limited to 'sql/handler.h')
| -rw-r--r-- | sql/handler.h | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/sql/handler.h b/sql/handler.h index 981bf9aec6a..da57f1a19a4 100644 --- a/sql/handler.h +++ b/sql/handler.h @@ -326,8 +326,24 @@ #define HA_CACHE_TBL_ASKTRANSACT 2 #define HA_CACHE_TBL_TRANSACT 4 -/* Options of START TRANSACTION statement (and later of SET TRANSACTION stmt) */ -#define MYSQL_START_TRANS_OPT_WITH_CONS_SNAPSHOT 1 +/** + Options for the START TRANSACTION statement. + + Note that READ ONLY and READ WRITE are logically mutually exclusive. + This is enforced by the parser and depended upon by trans_begin(). + + We need two flags instead of one in order to differentiate between + situation when no READ WRITE/ONLY clause were given and thus transaction + is implicitly READ WRITE and the case when READ WRITE clause was used + explicitly. +*/ + +// WITH CONSISTENT SNAPSHOT option +static const uint MYSQL_START_TRANS_OPT_WITH_CONS_SNAPSHOT = 1; +// READ ONLY option +static const uint MYSQL_START_TRANS_OPT_READ_ONLY = 2; +// READ WRITE option +static const uint MYSQL_START_TRANS_OPT_READ_WRITE = 4; /* Flags for method is_fatal_error */ #define HA_CHECK_DUP_KEY 1 @@ -1840,6 +1856,9 @@ public: */ PSI_table *m_psi; + virtual void unbind_psi(); + virtual void rebind_psi(); + handler(handlerton *ht_arg, TABLE_SHARE *share_arg) :table_share(share_arg), table(0), estimation_rows_to_insert(0), ht(ht_arg), |