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=begin
= apache/ruby-profile.rb
Copyright (C) 2005 Shugo Maeda <shugo@modruby.net>
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
== Overview
Apache::RubyProfile profiles Ruby scripts.
== Example of httpd.conf
RubyRequire apache/ruby-profile
<Location /ruby-profile>
SetHandler ruby-object
RubyHandler Apache::RubyProfile.instance
</Location>
=end
require "prof"
require "apache/ruby-run"
begin
open("/proc/cpuinfo") do |f|
f.each_line do |line|
s = line.slice(/cpu MHz\s*:\s*(.*)/, 1)
if s
Prof.cpu_frequency = s.to_f * 1000000
break
end
end
end
rescue Errno::ENOENT
end
module Apache
class RubyProfile < RubyRun
def handler(r)
status = check_request(r)
return status if status != OK
filename = setup(r)
case ENV["RUBY_PROF_CLOCK_MODE"]
when "gettimeofday"
Prof.clock_mode = Prof::GETTIMEOFDAY
when "cpu"
Prof.clock_mode = Prof::CPU
else
Prof.clock_mode = Prof::CLOCK
end
Prof.start
load(filename, true)
result = Prof.stop
append_profile_result(r, result)
return OK
end
def append_profile_result(r, result)
total = result.detect { |i|
i.method_class.nil? && i.method_id == :"#toplevel"
}.total_time
if total == 0.0
total = 0.001
end
sum = 0
buf = "<table>\n"
buf.concat("<tr>")
buf.concat("<th>% time</th>")
buf.concat("<th>cumulative seconds</th>")
buf.concat("<th>self seconds</th>")
buf.concat("<th>calls</th>")
buf.concat("<th>self ms/call</th>")
buf.concat("<th>total ms/call</th>")
buf.concat("<th>name</th>")
buf.concat("</tr>\n")
for i in result
sum += i.self_time
if i.method_class.nil?
name = i.method_id.to_s
elsif i.method_class.is_a?(Class)
name = i.method_class.to_s + "#" + i.method_id.to_s
else
name = i.method_class.to_s + "." + i.method_id.to_s
end
buf.concat("<tr>")
buf.concat(format("<td>%.4f</td>", i.self_time / total * 100))
buf.concat(format("<td>%.4f</td>", sum))
buf.concat(format("<td>%.4f</td>", i.self_time))
buf.concat(format("<td>%d</td>", i.count))
buf.concat(format("<td>%.4f</td>", i.self_time * 1000 / i.count))
buf.concat(format("<td>%.4f</td>", i.total_time * 1000 / i.count))
buf.concat(format("<td>%s</td>", r.escape_html(name)))
buf.concat("</tr>\n")
end
buf.concat("</table>\n")
if !r.output_buffer.gsub!(/<\/body>/i, buf)
r.output_buffer.concat(buf)
end
r.headers_out["Content-Length"] = r.output_buffer.length.to_s
end
end
end
|
