Added ha_maria::is_changed() (needed for Query cache)

storage/maria/ha_maria.cc:
  Added ha_maria::is_changed()
storage/maria/ha_maria.h:
  Added ha_maria::is_changed()
storage/maria/ma_delete.c:
  Mark that table changed
storage/maria/ma_open.c:
  Ensure that info->state->changed is always reset from thr_lock()
storage/maria/ma_state.c:
  Reset handler->state->changed at first usage of transactional table
  Reset handler->state->changed when taking lock for not transactional table
storage/maria/ma_state.h:
  Added variable and function to track changes of table
storage/maria/ma_update.c:
  Mark that table changed
storage/maria/ma_write.c:
  Mark that table changed

1 files changed, 10 insertions, 0 deletions

diff --git a/storage/maria/ma_state.c b/storage/maria/ma_state.c
index cfe0de62929..36e2dbc669a 100644
--- a/storage/maria/ma_state.c
+++ b/storage/maria/ma_state.c
@@ -96,6 +96,8 @@ my_bool _ma_setup_live_state(MARIA_HA *info)
   pthread_mutex_unlock(&share->intern_lock);
   /* The current item can't be deleted as it's the first one visible for us */
   tables->state_start=  tables->state_current= history->state;
+  tables->state_current.changed= 0;
+
   DBUG_PRINT("info", ("records: %ld", (ulong) tables->state_start.records));
 
 end:
@@ -262,6 +264,7 @@ void _ma_get_status(void* param, my_bool concurrent_insert)
 #endif
   info->state_save= info->s->state.state;
   info->state= &info->state_save;
+  info->state->changed= 0;
   info->append_insert_at_end= concurrent_insert;
   DBUG_VOID_RETURN;
 }
@@ -315,6 +318,13 @@ void _ma_copy_status(void* to, void *from)
 }
 
 
+void _ma_reset_update_flag(void *param)
+{
+  MARIA_HA *info=(MARIA_HA*) param;
+  info->state->changed= 0;
+}
+
+
 /**
    @brief Check if should allow concurrent inserts