diff options
Diffstat (limited to 'myisam')
| -rw-r--r-- | myisam/mi_locking.c | 32 |
1 files changed, 18 insertions, 14 deletions
diff --git a/myisam/mi_locking.c b/myisam/mi_locking.c index 2487f68d170..66950f62321 100644 --- a/myisam/mi_locking.c +++ b/myisam/mi_locking.c @@ -21,19 +21,6 @@ isamdatabase. */ -/* - state.open_count in the .MYI file is used the following way: - - For the first change of the file in this process it's incremented with - mi_mark_file_change(). (We have a write lock on the file in this case) - - In mi_close() it's decremented by _mi_decrement_open_count() if it - was incremented in the same process. - - This mean that if we are the only process using the file, the open_count - tells us if the MYISAM file wasn't properly closed. (This is true if - my_disable_locking is set). -*/ - - #include "myisamdef.h" /* lock table by F_UNLCK, F_RDLCK or F_WRLCK */ @@ -439,7 +426,24 @@ int _mi_test_if_changed(register MI_INFO *info) } /* _mi_test_if_changed */ -/* Put a mark in the .MYI file that someone is updating the table */ +/* + Put a mark in the .MYI file that someone is updating the table + + + DOCUMENTATION + + state.open_count in the .MYI file is used the following way: + - For the first change of the .MYI file in this process open_count is + incremented by mi_mark_file_change(). (We have a write lock on the file + when this happens) + - In mi_close() it's decremented by _mi_decrement_open_count() if it + was incremented in the same process. + + This mean that if we are the only process using the file, the open_count + tells us if the MYISAM file wasn't properly closed. (This is true if + my_disable_locking is set). +*/ + int _mi_mark_file_changed(MI_INFO *info) { |