diff options
Diffstat (limited to 'storage/xtradb/include/read0read.h')
| -rw-r--r-- | storage/xtradb/include/read0read.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/storage/xtradb/include/read0read.h b/storage/xtradb/include/read0read.h index e17d49b1321..0352f129c30 100644 --- a/storage/xtradb/include/read0read.h +++ b/storage/xtradb/include/read0read.h @@ -50,6 +50,27 @@ read_view_open_now( NULL if a new one needs to be created */ /*********************************************************************//** +Clones a read view object. This function will allocate space for two read +views contiguously, one identical in size and content as @param view (starting +at returned pointer) and another view immediately following the trx_ids array. +The second view will have space for an extra trx_id_t element. +@return read view struct */ +UNIV_INTERN +read_view_t* +read_view_clone( +/*============*/ + const read_view_t* view, /*!< in: view to clone */ + read_view_t*& prebuilt_clone);/*!< in,out: prebuilt view or + NULL */ +/*********************************************************************//** +Insert the view in the proper order into the trx_sys->view_list. The +read view list is ordered by read_view_t::low_limit_no in descending order. */ +UNIV_INTERN +void +read_view_add( +/*==========*/ + read_view_t* view); /*!< in: view to add to */ +/*********************************************************************//** Makes a copy of the oldest existing read view, or opens a new. The view must be closed with ..._close. @return own: read view struct */ |