Libcgroup

Bindings for the libcgroup library. Control Groups provide mechanisms to contain, limit and account for resource usage of process groups.

Installation

Add this line to your application's Gemfile:

gem 'libcgroup'

And then execute:

$ bundle

Or install it yourself as:

$ gem install libcgroup

Usage

require 'libcgroup'
puts LibCgroup.cgroup_init
puts root = LibCgroup.cgroup_new_cgroup("/")
puts LibCgroup.cgroup_get_cgroup(root)
puts ctl = LibCgroup.cgroup_get_controller(root, "cpu")
(0..(LibCgroup.cgroup_get_value_name_count(ctl)-1)).each do |i|
  name = LibCgroup.cgroup_get_value_name(ctl, i)
  s = FFI::MemoryPointer.new :pointer, 1
  LibCgroup.cgroup_get_value_string(ctl, name, s)
  strPtr = s.read_pointer
  if strPtr.null?
    puts name
  else
    puts "#{name} #{strPtr.read_string}"
  end
end

Contributing

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request

Checkout https://github.com/ffi/ffi/wiki/Examples for FFI introduction.