diff options
Diffstat (limited to 'innobase/include/row0mysql.h')
| -rw-r--r-- | innobase/include/row0mysql.h | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/innobase/include/row0mysql.h b/innobase/include/row0mysql.h index 44b470fe7ea..25d2ab77007 100644 --- a/innobase/include/row0mysql.h +++ b/innobase/include/row0mysql.h @@ -492,7 +492,11 @@ struct row_prebuilt_struct { fetch many rows from the same cursor: it saves CPU time to fetch them in a batch; we reserve mysql_row_len - bytes for each such row */ + bytes for each such row; these + pointers point 4 bytes past the + allocated mem buf start, because + there is a 4 byte magic number at the + start and at the end */ ulint fetch_cache_first;/* position of the first not yet fetched row in fetch_cache */ ulint n_fetch_cached; /* number of not yet fetched rows @@ -501,8 +505,12 @@ struct row_prebuilt_struct { to this heap */ mem_heap_t* old_vers_heap; /* memory heap where a previous version is built in consistent read */ + ulint magic_n2; /* this should be the same as + magic_n */ }; +#define ROW_PREBUILT_FETCH_MAGIC_N 465765687 + #define ROW_MYSQL_WHOLE_ROW 0 #define ROW_MYSQL_REC_FIELDS 1 #define ROW_MYSQL_NO_TEMPLATE 2 |