class RequireProf::MemorySampler

Public Class Methods

available?() click to toggle source
# File lib/require_prof/memory_sampler.rb, line 4
def self.available?
  return @available if defined?(@available)
  @available = defined?(JRuby) || platform =~ /linux|darwin|freebsd|solaris/
  unless @available
    STDERR.puts "WARNING: Unsupported platform for getting memory '#{platform}'"
  end
  @available
end
memory_usage() click to toggle source
# File lib/require_prof/memory_sampler.rb, line 40
def self.memory_usage
  sampler.memory_usage
end
platform() click to toggle source
# File lib/require_prof/memory_sampler.rb, line 32
def self.platform
  if RUBY_PLATFORM =~ /java/
    %x[uname -s].downcase
  else
    RUBY_PLATFORM.downcase
  end
end
sampler() click to toggle source
# File lib/require_prof/memory_sampler.rb, line 13
def self.sampler
  return @sampler if defined?(@sampler)

  @sampler = if defined? JRuby
               JavaHeapSampler.new
             elsif platform =~ /linux/
               ProcStatus.new
               # ShellPS.new('ps -o rsz')
             elsif platform =~ /darwin9/ # 10.5
               ShellPS.new('ps -o rsz')
             elsif platform =~ /darwin1\d+/ # >= 10.6
               ShellPS.new('ps -o rss')
             elsif platform =~ /freebsd/
               ShellPS.new('ps -o rss')
             elsif platform =~ /solaris/
               ShellPS.new('/usr/bin/ps -o rss -p')
             end
end