Atomic Generator

What is Atomic generator ?
An atomic generator is a process of generating a single instance of random data object or transaction at a time.

Purpose :
To validate the protocol/to reach the functional coverage space, that does not depend on any specific sequence.

The vmm_atomic_gen macro can be used to automatically generate an atomic generator transactor for the user defined clas.The resulting generator class is an extension of vmm_xactor.
i.e
`vmm_atomic_gen ( class_name, class_description_string ) ==> Creates class class_name_atomic_gen (see below)

class class_name_atomic_gen extends vmm_xactor;

The properties and methods of atomic generator are,

function new ( string instance, int stream_id = -1,
class_name_channel out_chan = null );

class_name_channel out_chan;

int unsigned stop_after_n_insts;

class_name randomized_obj;

enum { GENERATED };

enum { DONE };

virtual task inject ( class_name data, ref bit dropped );


Flow Chart which describes the internal operation of the atomic generator, This flow chart is drawn based on our understandings by working on various examples, SNUG papers and rvm/vmm manual.