JNA Usage

Hi All,

I am new to JNA concepts and need a help in understanding the API.
I want to write a java program which will take the running process as its input eg:Tomcat server and will tell the status and CPU usage of that process by interacting through JNA API.

As a sample program I am able to use the JNA api to get GetLocalTime and GetCurrentProcessId.Similar to these methods there must be methods to get CPU usgae also but I am not able to getting which are those methods.

Thanks a lot for your help.

Regards,
Monica