TracePoint

A TracePoint is a Binding with the addition event information. And it‘s a better way to use set_trace_func.

A TracePoint is a Binding with the addition of event information. Among other things, it functions very well as the join-point for Event-based AOP.

Usage

  TracePoint.trace { |tp|
    puts "#{tp.self.class}\t#{tp.called}\t#{tp.event}\t#{tp.return?}\t#{tp.back == tp.bind}"
  }

  1 + 1

produces

  Class   trace   return     true    false
  Object          line       false   false
  Fixnum  +       c-call     false   false
  Fixnum  +       c-return   false   false

Notes

You can‘t subclass Binding, so we delegate (which is better anyway).

Authors

• Thomas Sawyer

Copying

Copyright (c) 2005 Thomas Sawyer

Ruby License

This module is free software. You may use, modify, and/or redistribute this software under the same terms as Ruby.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.