What is the full form of p sequencer and m sequencer?

UVM
1

Description of p sequencer and m sequencer are explained at many places, but specifically looking for what is the full form. Somewhere mentioned that m sequencer is parent sequencer, then what p depicts in p sequencer?

2

I do not understand what you mean by “full form”; they are defined in the Reference Manual.

You might want to read:

3

To simplify question couple of examples given below:
“rand” means random
“uvm_env” means uvm environment

Similarly looking for the full form of letter “m” and letter “p” in the “m_sequencer” and "p_sequencer. In UVM, most of the class/function/task/macro/instance names are given as per their functionality i.e. self explanatory from the names. Same way, for “m_sequencer” and “p_sequencer” looking for the meaning of “m” and “p” to relate with their functionality.

Thanks.

4

Thanks for making your question much clearer to me.

Naming conventions are not always consistent across code developed by a wide group of people. I wish people would pay more attention to it as it makes life much easier for people who have to read your code.

The prefix “m_” is generally used for class member variables that are internal to the base class and not part of the external API. However m_sequencer is commonly used instead of the preferred get_sequencer accessor method. m_sequencer contains a handle to the unparameterized class uvm_sequencer_base that the sequence or sequence item is being executing on.

The prefix “p_” is not part of a general naming convention used within the UVM. p_sequence was chosen as the name of the variable containing the same handle to sequencer object as m_sequencer except its class type is the parameterized specialization of the sequencer.

Ideally you should not be using either variable.

5

Thanks Dave, interesting to know this.
But, I didn’t get last line. “Ideally you should not be using either variable.” Can you please elaborate little more for this line ?
Thanks.

6

Use accessor method get_sequencer() instead of m_sequencer directly.

Use any of the preferred alternatives to P_sequencer I gave as a link in my first reply.

7

Thanks Dave for the clarification.
From that link, I didn’t understand fully the details about alternatives to P_sequencer. But, I 'll revisit again and think through. Though, thanks for the link suggestion.