diff options
Diffstat (limited to 'innobase/include/btr0cur.h')
| -rw-r--r-- | innobase/include/btr0cur.h | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/innobase/include/btr0cur.h b/innobase/include/btr0cur.h index 79ec56c8e50..4ce2177bfe8 100644 --- a/innobase/include/btr0cur.h +++ b/innobase/include/btr0cur.h @@ -98,12 +98,18 @@ btr_cur_search_to_nth_level( the previous page of the record! Inserts should always be made using PAGE_CUR_LE to search the position! */ - ulint latch_mode, /* in: BTR_SEARCH_LEAF, ...; + ulint latch_mode, /* in: BTR_SEARCH_LEAF, ..., ORed with + BTR_INSERT and BTR_ESTIMATE; cursor->left_page is used to store a pointer to the left neighbor page, in the cases - BTR_SEARCH_PREV and BTR_MODIFY_PREV */ - btr_cur_t* cursor, /* out: tree cursor; the cursor page is s- or - x-latched */ + BTR_SEARCH_PREV and BTR_MODIFY_PREV; + NOTE that if has_search_latch + is != 0, we maybe do not have a latch set + on the cursor page, we assume + the caller uses his search latch + to protect the record! */ + btr_cur_t* cursor, /* in/out: tree cursor; the cursor page is + s- or x-latched, but see also above! */ ulint has_search_latch,/* in: latch mode the caller currently has on btr_search_latch: RW_S_LATCH, or 0 */ |