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require 'jruby/profiler'
require 'java'
java_import java.lang.management.ManagementFactory
module ActiveSupport
module Testing
module Performance
DEFAULTS.merge!(
if ARGV.include?('--benchmark')
{:metrics => [:wall_time, :user_time, :memory, :gc_runs, :gc_time]}
else
{ :metrics => [:wall_time],
:formats => [:flat, :graph] }
end).freeze
protected
def run_gc
ManagementFactory.memory_mx_bean.gc
end
class Profiler < Performer
def initialize(*args)
super
@supported = @metric.is_a?(Metrics::WallTime)
end
def run
return unless @supported
@total = time_with_block do
@data = JRuby::Profiler.profile do
full_profile_options[:runs].to_i.times { run_test(@metric, :profile) }
end
end
end
def record
return unless @supported
klasses = full_profile_options[:formats].map { |f| JRuby::Profiler.const_get("#{f.to_s.camelize}ProfilePrinter") }.compact
klasses.each do |klass|
fname = output_filename(klass)
FileUtils.mkdir_p(File.dirname(fname))
file = File.open(fname, 'wb') do |file|
klass.new(@data).printProfile(file)
end
end
end
protected
def output_filename(printer_class)
suffix =
case printer_class.name.demodulize
when 'FlatProfilePrinter'; 'flat.txt'
when 'GraphProfilePrinter'; 'graph.txt'
else printer_class.name.sub(/ProfilePrinter$/, '').underscore
end
"#{super()}_#{suffix}"
end
end
module Metrics
class Base
def profile
yield
end
protected
def with_gc_stats
ManagementFactory.memory_mx_bean.gc
yield
end
end
class WallTime < Time
def measure
super
end
end
class CpuTime < Time
def measure
ManagementFactory.thread_mx_bean.get_current_thread_cpu_time / 1000 / 1000 / 1000.0 # seconds
end
end
class UserTime < Time
def measure
ManagementFactory.thread_mx_bean.get_current_thread_user_time / 1000 / 1000 / 1000.0 # seconds
end
end
class Memory < DigitalInformationUnit
def measure
ManagementFactory.memory_mx_bean.non_heap_memory_usage.used + ManagementFactory.memory_mx_bean.heap_memory_usage.used
end
end
class GcRuns < Amount
def measure
ManagementFactory.garbage_collector_mx_beans.inject(0) { |total_runs, current_gc| total_runs += current_gc.collection_count }
end
end
class GcTime < Time
def measure
ManagementFactory.garbage_collector_mx_beans.inject(0) { |total_time, current_gc| total_time += current_gc.collection_time } / 1000.0 # seconds
end
end
end
end
end
end
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