-------------------------------------------------------------------------------
README FOR REDIS READER WRITER LOCK
-------------------------------------------------------------------------------
This is a  reader writer lock implementetion for a file shared over nfs.
In this implementetion 
lockShared and unlockShared is used by readers to acquire and release lock. 
    It allows multiple readers to access the file at same time.
lockExclusive and unlockExclusive is used by writer to acquire and release lock.
    It does not allows multiple writers to access the file at same time.


=============
Prerequisites
=============
gcc, hiredis, libevent


=================
Running the test
=================
To run the code you’ll need to mount a common share on "/mnt/".
To complie code
    Execute: "gcc redis_read_write.c -lhiredis -w -levent_core -lpthread"

To test reader-writer lock each node does operation and then sleeps for a 
specific amount of time. Each node does 10 iterations of its task. 
I’ve reduced sleep duration to keep recording short.
    node0 does read and then sleeps for 8 seconds.
    node1 does read and sleeps for 5 seconds.
    node2 and node 3 do write and sleeps for 5 seconds.

While executing ./a.out you’ll need to pass node number (0,1,2,3) to them like
“./a.out 1”.

====================================================
For any further queries ping me at [email protected]
====================================================