difference between m_sequencer and p_sequencer

m_sequencer,

The m_sequencer handle contains the reference to the sequencer(default sequencer) on which the sequence is running.

This is determined by,

• the sequencer handle provided in the start method
• the sequencer used by the parent sequence
• the sequencer that was set using the set_sequencer method

p_sequencer,

The p_sequencer is a variable, used as handle to access the sequencer properties.
p_sequencer is defined using the macro `uvm_declare_p_sequencer(SEQUENCER_NAME)