ph7/system-timer — Issue #19: Can't load gem
Author: rubycut
Created: 2011-11-29 10:25:13+00:00
State: open

ruby-1.8.7-p352 :001 > require 'rubygems'
=> false
ruby-1.8.7-p352 :002 > gem "SystemTimer"
=> true
ruby-1.8.7-p352 :006 > require 'system_timer'
NoMethodError: undefined method `exclusive' for Thread:Class
from /home//.rvm/gems/ruby-1.8.7-p352@sysmon/gems/SystemTimer-1.2/lib/system_timer.rb:33
from /home//.rvm/rubies/ruby-1.8.7-p352/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:36:in `gem_original_require'
from /home//.rvm/rubies/ruby-1.8.7-p352/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:36:in `require'
from (irb):6

I don't see #exclusive method anywhere in Ruby docs. It's present in rails only.