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This is ApacheBench, Version 2.3 <$Revision: 655654 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/

Benchmarking 127.0.0.1 (be patient)


Server Software:        SimpleHTTP/0.6
Server Hostname:        127.0.0.1
Server Port:            5000

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#!/usr/bin/env ruby
# A quick and dirty implementation of an HTTP proxy server in Ruby
# because I did not want to install anything.
# 
# Copyright (C) 2009 Torsten Becker <[email protected]>

require 'socket'
require 'uri'

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TracePoint:
	disable                        1
	enable                         1

Object:
	require                        1983
	load_dependency                485
	[]                             18
	hash                           15
	initialize                     6

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class Foo
  def self.foo; end
  def foo; end
end

tp = TracePoint.new("call") do |trace|
  p [trace.defined_class, trace.method_id, trace.event, trace.lineno]
end

tp.enable

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This is a proof-of-concept of a couple of concurrent data structures written in Ruby.

The implementations are heavily commented for those interested. There are benchmarks (with results) included below. The results are interesting, but, as always, take with a grain of salt.

Data structures

AtomicLinkedQueue is a lock-free queue, built on atomic CAS operations.

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## stub v should_receive

## This is just a simple example to show uses of stub, and should_receive. Imagine you have the following code:

# topic.rb
class Topic < ActiveRecord::Base
  has_many :stories

  def add_story(story)
    unless exists? story

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# See:
# * http://thepugautomatic.com/2014/03/simpledelegator-autoloading-issues-with-rails/
# * https://groups.google.com/forum/#!topic/rubyonrails-core/PjGUK72BmFA
# * https://gist.github.com/henrik/9314943

require "delegate"

class RailsCompatibleSimpleDelegator < SimpleDelegator
  def self.const_missing(name)
    if ::Object.const_defined?(name)

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#!/usr/bin/env ruby

puts "Run this in another terminal:"
puts ""
puts "  sudo ./trace-gc-standalone.sh #{$$}"
puts ""
puts "... wait for the 'Ready!' message, switch back here and press enter to start."

GC::Profiler.enable
$stdin.gets

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define(function(){
    var instance = null;

    function MySingleton(){
        if(instance !== null){
            throw new Error("Cannot instantiate more than one MySingleton, use MySingleton.getInstance()");
        } 
        
        this.initialize();
    }

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// http://www.nczonline.net/blog/2009/06/23/loading-javascript-without-blocking/

function loadScript(url, callback){

    var script = document.createElement("script")
    script.type = "text/javascript";

    if (script.readyState){  //IE
        script.onreadystatechange = function(){
            if (script.readyState == "loaded" ||