add passing argument before set fname. modify log message from 'current pos' to 'current parse pos' for NMI. correct if statement checking existence of pid node
add new log into find_proc_node
implementing allocate new trace_node into existing proc_node
remove comment block in add_trace_node. add some log msgs. convert log level from LOG_ERR to LOG_DEBUG while developing.
Implement adding new trace_node into existing proc_node and trace_tree. It needs NMW with close fd.