INNODB real-time locks?
The quick way to see it is to run SHOW ENGINE INNODB STATUS\G

You will see


exclusive locks
shared locks
corresponding queries
number of read IO thread in use
number of write IO thread in use


Here are some sample questions I answered that uses the output of SHOW ENGINE INNODB STATUS\G


Will these two queries result in a deadlock if executed in sequence?
Trouble deciphering a deadlock in an innodb status log


Give it a Try !!!