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author | Yehuda Katz + Carl Lerche <ykatz+clerche@engineyard.com> | 2009-09-24 14:01:31 -0700 |
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committer | Yehuda Katz + Carl Lerche <ykatz+clerche@engineyard.com> | 2009-09-24 16:11:41 -0700 |
commit | f0dd77c6be6a86fe384bb0015151e0a497973d39 (patch) | |
tree | ad81bb4c807c39edeaa37035882a16d9d95ebaa9 /railties/lib/rails/commands/performance/profiler.rb | |
parent | 610b81beca461a6fa4f00c7023e0e4315eb2b8be (diff) | |
download | rails-f0dd77c6be6a86fe384bb0015151e0a497973d39.tar.gz rails-f0dd77c6be6a86fe384bb0015151e0a497973d39.tar.bz2 rails-f0dd77c6be6a86fe384bb0015151e0a497973d39.zip |
Move railties/lib/* into railties/lib/*
Diffstat (limited to 'railties/lib/rails/commands/performance/profiler.rb')
-rw-r--r-- | railties/lib/rails/commands/performance/profiler.rb | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/railties/lib/rails/commands/performance/profiler.rb b/railties/lib/rails/commands/performance/profiler.rb new file mode 100644 index 0000000000..7df840f197 --- /dev/null +++ b/railties/lib/rails/commands/performance/profiler.rb @@ -0,0 +1,50 @@ +if ARGV.empty? + $stderr.puts "Usage: ./script/performance/profiler 'Person.expensive_method(10)' [times] [flat|graph|graph_html]" + exit(1) +end + +# Keep the expensive require out of the profile. +$stderr.puts 'Loading Rails...' +require RAILS_ROOT + '/config/environment' + +# Define a method to profile. +if ARGV[1] and ARGV[1].to_i > 1 + eval "def profile_me() #{ARGV[1]}.times { #{ARGV[0]} } end" +else + eval "def profile_me() #{ARGV[0]} end" +end + +# Use the ruby-prof extension if available. Fall back to stdlib profiler. +begin + begin + require "ruby-prof" + $stderr.puts 'Using the ruby-prof extension.' + RubyProf.measure_mode = RubyProf::WALL_TIME + RubyProf.start + profile_me + results = RubyProf.stop + if ARGV[2] + printer_class = RubyProf.const_get((ARGV[2] + "_printer").classify) + else + printer_class = RubyProf::FlatPrinter + end + printer = printer_class.new(results) + printer.print($stderr) + rescue LoadError + require "prof" + $stderr.puts 'Using the old ruby-prof extension.' + Prof.clock_mode = Prof::GETTIMEOFDAY + Prof.start + profile_me + results = Prof.stop + require 'rubyprof_ext' + Prof.print_profile(results, $stderr) + end +rescue LoadError + require 'profiler' + $stderr.puts 'Using the standard Ruby profiler.' + Profiler__.start_profile + profile_me + Profiler__.stop_profile + Profiler__.print_profile($stderr) +end |