163   sqlite3_mutex_enter(pSrcDb->mutex);  in sqlite3_backup_init()
164   sqlite3_mutex_enter(pDestDb->mutex);  in sqlite3_backup_init()
207   sqlite3_mutex_leave(pDestDb->mutex);  in sqlite3_backup_init()
208   sqlite3_mutex_leave(pSrcDb->mutex);  in sqlite3_backup_init()
329   sqlite3_mutex_enter(p->pSrcDb->mutex);  in sqlite3_backup_step()
332     sqlite3_mutex_enter(p->pDestDb->mutex);  in sqlite3_backup_step()
564     sqlite3_mutex_leave(p->pDestDb->mutex);  in sqlite3_backup_step()
567   sqlite3_mutex_leave(p->pSrcDb->mutex);  in sqlite3_backup_step()
582   sqlite3_mutex_enter(pSrcDb->mutex);  in sqlite3_backup_finish()
585     sqlite3_mutex_enter(p->pDestDb->mutex);  in sqlite3_backup_finish()
671     assert( sqlite3_mutex_held(p->pSrc->pBt->mutex) );  in backupUpdate()
679       sqlite3_mutex_enter(p->pDestDb->mutex);  in backupUpdate()
681       sqlite3_mutex_leave(p->pDestDb->mutex);  in backupUpdate()
707     assert( sqlite3_mutex_held(p->pSrc->pBt->mutex) );  in sqlite3BackupRestart()