\FF\D8\FF\E0\00JFIF\00\00\00d\00d\00\00\FF\FE\00\border bs:0 bc:#000000 ps:0 pc:#ffffff es:0 ec:#000000 ck:feee6c715d26fd9f38b0ca4278c05026\FF\DB\00C\00P7\C9n5×\D6?\BDê\9Ds\EBp\9F[`8m\B7)o\B5\E8\E6I\99\FE3]]A2\BA\8Cw\D6E\93\\DEv\C8\009\F2\F1NI?uc\\F5\EA\96k\xN<~buv\EA\C8\D7 \8B\84\CEcxI\BBg\AE\9E=\D6+n\EC\80\C8A\8C\AE\EB\CF\D5\DA\E9"2\A4\B9j5\EB\F3W\B63\96\B30Yu\DA\FC8\ED\DF\E7Ms\FB\F1\8E\B3\FA\EA\E8\E6(\883zs\F2_\8DFk\8Bh \00\8C\DCw\D3R\B5+6X\BA\B2\C4j\AB0\B4\FCMw\C2I\8E\9B\E3\A9~9u\FA\D3l\80\C8%p\EE\FDn2€ \00 $\FEj\C4e\A9\DB\~\95\A7\A5\80EK\BB\8DDsP\00@@AD'k\CF\E8\DB\D2(\80\9AK\D3\85\D6lb\F2\BA\8C*\80\00)\95 59\A3R:\F3\CE"\B6\80\88\00\00i1u4ê\E9\F2á\A6\A2\FACM\93WMb*\E0*\00\00\00\00\00(\A8\80\00\00\80\00\00\00\00\00\00\00\00\00\FF\D9 C/// # frozen_string_literal: false #-- # $Release Version: 0.3$ # $Revision: 1.12 $ ## # Outputs a source level execution trace of a Ruby program. # # It does this by registering an event handler with Kernel#set_trace_func for # processing incoming events. It also provides methods for filtering unwanted # trace output (see Tracer.add_filter, Tracer.on, and Tracer.off). # # == Example # # Consider the following Ruby script # # class A # def square(a) # return a*a # end # end # # a = A.new # a.square(5) # # Running the above script using ruby -r tracer example.rb will # output the following trace to STDOUT (Note you can also explicitly # require 'tracer') # # #0::38:Kernel:<: - # #0:example.rb:3::-: class A # #0:example.rb:3::C: class A # #0:example.rb:4::-: def square(a) # #0:example.rb:7::E: end # #0:example.rb:9::-: a = A.new # #0:example.rb:10::-: a.square(5) # #0:example.rb:4:A:>: def square(a) # #0:example.rb:5:A:-: return a*a # #0:example.rb:6:A:<: end # | | | | | # | | | | ---------------------+ event # | | | ------------------------+ class # | | --------------------------+ line # | ------------------------------------+ filename # ---------------------------------------+ thread # # Symbol table used for displaying incoming events: # # +}+:: call a C-language routine # +{+:: return from a C-language routine # +>+:: call a Ruby method # +C+:: start a class or module definition # +E+:: finish a class or module definition # +-+:: execute code on a new line # +^+:: raise an exception # +<+:: return from a Ruby method # # == Copyright # # by Keiju ISHITSUKA(keiju@ishitsuka.com) # class Tracer class << self # display additional debug information (defaults to false) attr_accessor :verbose alias verbose? verbose # output stream used to output trace (defaults to STDOUT) attr_accessor :stdout # mutex lock used by tracer for displaying trace output attr_reader :stdout_mutex # display process id in trace output (defaults to false) attr_accessor :display_process_id alias display_process_id? display_process_id # display thread id in trace output (defaults to true) attr_accessor :display_thread_id alias display_thread_id? display_thread_id # display C-routine calls in trace output (defaults to false) attr_accessor :display_c_call alias display_c_call? display_c_call end Tracer::stdout = STDOUT Tracer::verbose = false Tracer::display_process_id = false Tracer::display_thread_id = true Tracer::display_c_call = false @stdout_mutex = Thread::Mutex.new # Symbol table used for displaying trace information EVENT_SYMBOL = { "line" => "-", "call" => ">", "return" => "<", "class" => "C", "end" => "E", "raise" => "^", "c-call" => "}", "c-return" => "{", "unknown" => "?" } def initialize # :nodoc: @threads = Hash.new if defined? Thread.main @threads[Thread.main.object_id] = 0 else @threads[Thread.current.object_id] = 0 end @get_line_procs = {} @filters = [] end def stdout # :nodoc: Tracer.stdout end def on # :nodoc: if block_given? on begin yield ensure off end else set_trace_func method(:trace_func).to_proc stdout.print "Trace on\n" if Tracer.verbose? end end def off # :nodoc: set_trace_func nil stdout.print "Trace off\n" if Tracer.verbose? end def add_filter(p = nil, &b) # :nodoc: p ||= b @filters.push p end def set_get_line_procs(file, p = nil, &b) # :nodoc: p ||= b @get_line_procs[file] = p end def get_line(file, line) # :nodoc: if p = @get_line_procs[file] return p.call(line) end unless list = SCRIPT_LINES__[file] list = File.readlines(file) rescue [] SCRIPT_LINES__[file] = list end if l = list[line - 1] l else "-\n" end end def get_thread_no # :nodoc: if no = @threads[Thread.current.object_id] no else @threads[Thread.current.object_id] = @threads.size end end def trace_func(event, file, line, id, binding, klass, *) # :nodoc: return if file == __FILE__ for p in @filters return unless p.call event, file, line, id, binding, klass end return unless Tracer::display_c_call? or event != "c-call" && event != "c-return" Tracer::stdout_mutex.synchronize do if EVENT_SYMBOL[event] stdout.printf("<%d>", $$) if Tracer::display_process_id? stdout.printf("#%d:", get_thread_no) if Tracer::display_thread_id? if line == 0 source = "?\n" else source = get_line(file, line) e