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.
AtomicLinkedQueue is a lock-free queue, built on atomic CAS operations.
| if has("cscope") | |
| "TODO: turn this all into a plugin. | |
| set nocscopetag | |
| set cscopequickfix=s-,c-,d-,i-,t-,e- | |
| set nocscopeverbose | |
| if filereadable(".git/cscope.out") | |
| cscope add .git/cscope.out | |
| endif | |
| set cscopeverbose |
| puts "Loading global_var.rb" | |
| GlobalConstant = 'GlobalConstant' | |
| $GlobalConstant_WithDollarSign = 'Global Constant with Dollar Sign' | |
| module SharedVar | |
| NAMESPACED_CONSTANT = 'Named spaced constant' | |
| def your_method | |
| "Whatever your method would be." | |
| end |
| class << self! | |
| end | |
| # => NoMethodError: undefined method `self!' for main:Object | |
| class << self | |
| end | |
| # => nil | |
| self.class | |
| # => Object |
| # a little program to accept a list of words, sort them without using the sort method, and output them in alphabetical order | |
| j = 0 | |
| words = [] | |
| words2 = [] | |
| a_word = 'a' # dummy initialization to get into the until loop below | |
| i = 0 | |
| puts "Type a word and press <Enter> (Enter a blank line to quit):" | |
| # Loop to accept an unspecified number of words-- creates original array | |
| until a_word.empty? | |
| a_word = gets.chomp |
| Gem::Specification.new do |s| | |
| s.name = 'bang' | |
| s.version = '0.1.0' | |
| s.platform = Gem::Platform::RUBY | |
| s.author = 'Jeff Kreeftmeijer' | |
| s.email = '[email protected]' | |
| s.summary = 'Bang!' | |
| s.description = 'Bangs existing model methods' | |
| s.files = ['bang.rb'] |
| #!/usr/bin/env ruby | |
| # encoding: utf-8 | |
| # irb3 - Runs an IRB-esque prompt (but it's NOT really IRB!) over multiple | |
| # versions of Ruby at once (using RVM) | |
| # | |
| # By Peter Cooper, BSD licensed | |
| # | |
| # Main dependency is term-ansicolor for each impl: | |
| # rvm exec gem install term-ansicolor |
| # First get the current local time | |
| t = Time.now | |
| # to get day, month and year with century | |
| # also hour, minute and second | |
| puts t.strftime("%d/%m/%Y %H:%M:%S") | |
| # You can use the upper case A and B to get the full | |
| # name of the weekday and month, respectively | |
| puts t.strftime("%A") | |
| puts t.strftime("%B") |
| def a(*args, &block) | |
| puts "a got a block" if block_given? | |
| end | |
| def b(*args, &block) | |
| puts "b got a block" if block_given? | |
| end | |
| # In this call, `b' is called with the block and the | |
| # return value is given to `a' as an argument. |
