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Versions: 37
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Contents
module Skylight
module VM
if defined?(JRUBY_VERSION)
# This doesn't quite work as we would like it. I believe that the GC
# statistics includes time that is not stop-the-world, this does not
# necessarily take time away from the application.
#
# require 'java'
# class GC
# def initialize
# @factory = Java::JavaLangManagement::ManagementFactory
# end
#
# def enable
# end
#
# def total_time
# res = 0.0
#
# @factory.garbage_collector_mx_beans.each do |mx|
# res += (mx.collection_time.to_f / 1_000.0)
# end
#
# res
# end
# end
elsif defined?(::GC::Profiler)
class GC
def initialize
@total = 0
end
def enable
::GC::Profiler.enable
end
def total_time
# Reported in seconds
run = (::GC::Profiler.total_time * 1_000_000).to_i
if run > 0
::GC::Profiler.clear
end
@total += run
end
end
end
# Fallback
unless defined?(VM::GC)
class GC
def enable
end
def total_time
0
end
end
end
end
end
Version data entries
37 entries across 37 versions & 1 rubygems