A framework for spawning and communication with other Ruby-processes.
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README.md

RubyProcess

Start another Ruby process and manipulate it almost seamlessly.

Example

The CSV lib will not be loaded in the main process and the writing of the file will also take place in another process.

require "rubygems"
require "ruby_process"

RubyProcess.new.spawn_process do |rp|
  rp.static(:Object, :require, "csv")

  rp.static(:CSV, :open, "test.csv", "w") do |csv|
    csv << ["ID", "Name"]
    csv << [1, "Kasper"]
  end
end

Install

Add to your Gemfile and bundle.

gem "ruby_process"

Usage

Start a sub process.

With a block.

RubyProcess.new.spawn_process do |rp|
  rp.static(:File, :open, "some_file", "w") do |fp|
    fp.write("Test!")
  end
end

Almost seamless mode with ClassProxy.

RubyProcess::ClassProxy.run do |data|
  sp = data[:subproc]
  sp.static(:Object, :require, "tempfile")

  # Tempfile will be created in the subprocess and not in the current process.
  temp_file = RubyProcess::ClassProxy::Tempfile("temp")
end

As a variable.

rp = RubyProcess.new(debug: false)
rp.spawn_process
test_string = rp.new(:String, "Test")

Static methods.

Calling static methods on classes.

rp.static(:File, :open, "file_path", "w")

Spawning objects.

Spawning new objects.

file = rp.new(:File, "file_path", "r")

Serializing objects back to the main process.

rp.static(:File, :size, "file_path") #=> RubyProcess::ProxyObject
rp.static(:File, :size, "file_path").__rp_marshall #=> 2048

Making subprocess yield and loop in main process.

array = rp.str_eval("[1, 3, 5, 7]")
array.class.name #=> "RubyProcess::ProxyObject"

array.each do |number|
  number.class.name #=> "RubyProcess::ProxyObject"
  number.__rp_marshal #=> 1 | 3 | 5 | 7
end

Contributing to RubyProcess

  • Check out the latest master to make sure the feature hasn't been implemented or the bug hasn't been fixed yet.
  • Check out the issue tracker to make sure someone already hasn't requested it and/or contributed it.
  • Fork the project.
  • Start a feature/bugfix branch.
  • Commit and push until you are happy with your contribution.
  • Make sure to add tests for it. This is important so I don't break it in a future version unintentionally.
  • Please try not to mess with the Rakefile, version, or history. If you want to have your own version, or is otherwise necessary, that is fine, but please isolate to its own commit so I can cherry-pick around it.

Copyright

Copyright (c) 2012 Kasper Johansen. See LICENSE.txt for further details.