Class: Rack::Profiler

Inherits:
Object
  • Object
show all
Defined in:
lib/rack/contrib/profiler.rb

Overview

Set the profile=process_time query parameter to download a calltree profile of the request.

Pass the :printer option to pick a different result format.

Constant Summary collapse

MODES = 
%w(
  process_time
  wall_time
  cpu_time
  allocations
  memory
  gc_runs
  gc_time
)
DEFAULT_PRINTER = 
RubyProf::CallTreePrinter
DEFAULT_CONTENT_TYPE = 
'application/octet-stream'
PRINTER_CONTENT_TYPE = 
{
  RubyProf::FlatPrinter => 'text/plain',
  RubyProf::GraphPrinter => 'text/plain',
  RubyProf::GraphHtmlPrinter => 'text/html'
}

Instance Method Summary collapse

Constructor Details

#initialize(app, options = {}) ⇒ Profiler

Accepts a :printer => [:call_tree|:graph_html|:graph|:flat] option defaulting to :call_tree.



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# File 'lib/rack/contrib/profiler.rb', line 30

def initialize(app, options = {})
  @app = app
  @printer = parse_printer(options[:printer])
  @times = (options[:times] || 1).to_i
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/rack/contrib/profiler.rb', line 36

def call(env)
  if mode = profiling?(env)
    profile(env, mode)
  else
    @app.call(env)
  end
end