This is the API documentation for tracer: Ruby Standard Library Documentation.
CObject
CTracer
::add_filter (Tracer)
::new (Tracer)
::off (Tracer)
::on (Tracer)
::set_get_line_procs (Tracer)
#add_filter (Tracer)
#get_line (Tracer)
#get_thread_no (Tracer)
#off (Tracer)
#on (Tracer)
#set_get_line_procs (Tracer)
#stdout (Tracer)
#trace_func (Tracer)