Try to set a write lock on a write lock for many times (Denied)

Slave0: Create a file, write data, close it
Slave0: Open the file for read\write, set a write lock on all file entirely
Slave1: Open the file for read\write
In cycle:
Slave0: Read one byte of data
In cycle:
Slave1: Try to set a write lock on the same peace of data( Denied)
Slave1: Wait 0.0001sec