module Vagrant::Util::Counter

Atomic counter implementation. This is useful for incrementing a counter which is guaranteed to only be used once in its class.

Public Instance Methods

get_and_update_counter(name=nil) click to toggle source
# File lib/vagrant/util/counter.rb, line 8
def get_and_update_counter(name=nil)
  name ||= :global

  mutex.synchronize do
    @__counter ||= Hash.new(1)
    result = @__counter[name]
    @__counter[name] += 1
    result
  end
end
mutex() click to toggle source
# File lib/vagrant/util/counter.rb, line 19
def mutex
  @__counter_mutex ||= Mutex.new
end