Module: TestProf::StackProf

Extended by:
Logging
Defined in:
lib/test_prof/stack_prof.rb,
lib/test_prof/stack_prof/rspec.rb

Overview

StackProf wrapper.

Has 2 modes: global and per-example.

Example:

# To activate global profiling you can use env variable
TEST_STACK_PROF=1 rspec ...

# or in your code
TestProf::StackProf.run

To profile a specific examples add :sprof tag to it:

it "is doing heavy stuff", :sprof do
  ...
end

Defined Under Namespace

Classes: Configuration, Listener

Constant Summary

Constants included from Logging

Logging::COLORS

Class Method Summary collapse

Methods included from Logging

log

Class Method Details

.config ⇒ Object 



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# File 'lib/test_prof/stack_prof.rb', line 60

def config
  @config ||= Configuration.new
end

.configure {|config| ... } ⇒ Object

Yields:



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# File 'lib/test_prof/stack_prof.rb', line 64

def configure
  yield config
end

.dump(name) ⇒ Object 



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# File 'lib/test_prof/stack_prof.rb', line 110

def dump(name)
  ::StackProf.stop

  path = build_path(name)

  ::StackProf.results(path)

  log :info, "StackProf report generated: #{path}"

  return unless config.raw

  send("dump_#{config.format}_report", path)
end

.profile(name = nil) ⇒ Object 



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# File 'lib/test_prof/stack_prof.rb', line 81

def profile(name = nil)
  if locked?
    log :warn, <<~MSG
      StackProf has been already activated.

      Make sure you have not set the TEST_STACK_PROF environmental variable.
    MSG
    return false
  end

  return false unless init_stack_prof

  options = {
    mode: config.mode,
    raw: config.raw
  }

  options[:interval] = config.interval if config.interval
  options[:ignore_gc] = true if config.ignore_gc

  if block_given?
    options[:out] = build_path(name)
    ::StackProf.run(**options) { yield }
  else
    ::StackProf.start(**options)
  end
  true
end

.run ⇒ Object

Run StackProf and automatically dump a report when the process exits or when the application is booted.



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# File 'lib/test_prof/stack_prof.rb', line 70

def run
  return unless profile

  @locked = true

  log :info, "StackProf#{config.raw? ? " (raw)" : ""} enabled globally: " \
             "mode – #{config.mode}, target – #{config.target}"

  at_exit { dump("total") } if config.suite?
end