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files >> //opt/alt/ruby18/lib64/ruby/1.8/tracer.rb
# # tracer.rb - # $Release Version: 0.2$ # $Revision: 1.8 $ # $Date: 1998/05/19 03:42:49 $ # by Keiju ISHITSUKA(Nippon Rational Inc.) # # -- # # # # # tracer main class # class Tracer @RCS_ID='-$Id: tracer.rb,v 1.8 1998/05/19 03:42:49 keiju Exp keiju $-' @stdout = STDOUT @verbose = false class << self attr :verbose, true alias verbose? verbose attr :stdout, true end EVENT_SYMBOL = { "line" => "-", "call" => ">", "return" => "<", "class" => "C", "end" => "E", "c-call" => ">", "c-return" => "<", } def initialize @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 Tracer.stdout end def on 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 set_trace_func nil stdout.print "Trace off\n" if Tracer.verbose? end def add_filter(p = proc) @filters.push p end def set_get_line_procs(file, p = proc) @get_line_procs[file] = p end def get_line(file, line) if p = @get_line_procs[file] return p.call(line) end unless list = SCRIPT_LINES__[file] begin f = open(file) begin SCRIPT_LINES__[file] = list = f.readlines ensure f.close end rescue SCRIPT_LINES__[file] = list = [] end end if l = list[line - 1] l else "-\n" end end def get_thread_no 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, *) return if file == __FILE__ for p in @filters return unless p.call event, file, line, id, binding, klass end saved_crit = Thread.critical Thread.critical = true stdout.printf("#%d:%s:%d:%s:%s: %s", get_thread_no, file, line, klass || '', EVENT_SYMBOL[event], get_line(file, line)) Thread.critical = saved_crit end Single = new def Tracer.on if block_given? Single.on{yield} else Single.on end end def Tracer.off Single.off end def Tracer.set_get_line_procs(file_name, p = proc) Single.set_get_line_procs(file_name, p) end def Tracer.add_filter(p = proc) Single.add_filter(p) end end SCRIPT_LINES__ = {} unless defined? SCRIPT_LINES__ if $0 == __FILE__ # direct call $0 = ARGV[0] ARGV.shift Tracer.on require $0 elsif caller(0).size == 1 Tracer.on end
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