Wraps rb_add_event_hook so you can write fast ruby event hook processors w/o the speed penalty that comes with set_trace_func (sooo sloooow!). Calls back into ruby so you don’t have to write C.
% ruby demo.rb
# of iterations = 1000000
user system total real
null_time 0.120000 0.000000 0.120000 ( 0.125279)
ruby time 0.560000 0.000000 0.560000 ( 0.562834)
event hook 3.160000 0.010000 3.170000 ( 3.175361)
set_trace_func 34.530000 0.100000 34.630000 ( 34.942785)
Simple subclass design. Override ::process and you’re off.
Filters on calls/returns to not bog down on extraneous events.
Not sure why process needs to be a class method. Will fix eventually.
class StupidTracer < EventHook self.process(*args) p args end end
RubyInline
sudo gem install event_hook
(The MIT License)
Copyright © 2009 Ryan Davis, Seattle.rb
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