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|
#
# 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 $-'
class << self
attr :verbose, TRUE
alias verbose? verbose
end
verbose = TRUE
MY_FILE_NAME = caller(0)[0].scan(/^(.*):[0-9]+$/)[0][0]
EVENT_SYMBOL = {
"line" => "-",
"call" => ">",
"return" => "<",
"class" => "C",
"end" => "E"}
def initialize
@threads = Hash.new
if defined? Thread.main
@threads[Thread.main.id] = 0
else
@threads[Thread.current.id] = 0
end
@get_line_procs = {}
@sources = {}
@filters = []
end
def on
if iterator?
on
begin
yield
ensure
off
end
else
set_trace_func proc{|event, file, line, id, binding|
trace_func event, file, line, id, binding
}
print "Trace on\n" if Tracer.verbose?
end
end
def off
set_trace_func nil
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 = @sources[file]
# print file if $DEBUG
begin
f = open(file)
begin
@sources[file] = list = f.readlines
ensure
f.close
end
rescue
@sources[file] = list = []
end
end
if l = list[line - 1]
l
else
"-\n"
end
end
def get_thread_no
if no = @threads[Thread.current.id]
no
else
@threads[Thread.current.id] = @threads.size
end
end
def trace_func(event, file, line, id, binding)
return if file == MY_FILE_NAME
#printf "Th: %s\n", Thread.current.inspect
for p in @filters
return unless p.call event, file, line, id, binding
end
Thread.critical = TRUE
printf("#%d:%s:%d:%s: %s",
get_thread_no,
file,
line,
EVENT_SYMBOL[event],
get_line(file, line))
Thread.critical = FALSE
end
Single = new
def Tracer.on
if iterator?
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
if caller(0).size == 1
if $0 == Tracer::MY_FILE_NAME
# direct call
$0 = ARGV[0]
ARGV.shift
Tracer.on
require $0
else
Tracer.on
end
end
|
