diff options
Diffstat (limited to 'storage/xtradb/sync/sync0sync.c')
| -rw-r--r-- | storage/xtradb/sync/sync0sync.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/storage/xtradb/sync/sync0sync.c b/storage/xtradb/sync/sync0sync.c index fe14cbf0886..225f28df78e 100644 --- a/storage/xtradb/sync/sync0sync.c +++ b/storage/xtradb/sync/sync0sync.c @@ -434,20 +434,19 @@ mutex_set_waiters( mutex_t* mutex, /*!< in: mutex */ ulint n) /*!< in: value to set */ { -#ifndef INNODB_RW_LOCKS_USE_ATOMICS - volatile ulint* ptr; /* declared volatile to ensure that - the value is stored to memory */ -#endif - +#ifdef INNODB_RW_LOCKS_USE_ATOMICS ut_ad(mutex); -#ifdef INNODB_RW_LOCKS_USE_ATOMICS if (n) { os_compare_and_swap_ulint(&mutex->waiters, 0, 1); } else { os_compare_and_swap_ulint(&mutex->waiters, 1, 0); } #else + volatile ulint* ptr; /* declared volatile to ensure that + the value is stored to memory */ + ut_ad(mutex); + ptr = &(mutex->waiters); *ptr = n; /* Here we assume that the write of a single |