Move em-posix-spawn to Warden

Relocate and update dependencies

Signed-off-by: Sandy Cash <[email protected]>

em-posix-spawn/Gemfile

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+source "http://rubygems.org"
+gemspec

em-posix-spawn/Gemfile.lock

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+PATH
+  remote: .
+  specs:
+    em-posix-spawn (0.1.10)
+      eventmachine
+      posix-spawn
+
+GEM
+  remote: http://rubygems.org/
+  specs:
+    eventmachine (1.0.8)
+    minitest (5.8.3)
+    posix-spawn (0.3.11)
+    rake (10.4.2)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  em-posix-spawn!
+  minitest
+  rake
+
+BUNDLED WITH
+   1.11.2

em-posix-spawn/README.md

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+# `em-posix-spawn`
+
+This module provides an interface to `POSIX::Spawn` for EventMachine. In
+particular, it contains an EventMachine equivalent to `POSIX::Spawn::Child`.
+This class encapsulates writing to the child process its stdin and reading from
+both its stdout and stderr. Only when the process has exited, it triggers a
+callback to notify others of its completion. Just as `POSIX::Spawn::Child`,
+this module allows the caller to include limits for execution time and number
+of bytes read from stdout and stderr.
+
+# Usage
+
+Please refer to the documentation of `POSIX::Spawn::Child` for the complete set
+of options that can be passed when creating `Child`.
+
+```ruby
+require "em/posix/spawn"
+
+EM.run {
+  p = EM::POSIX::Spawn::Child.new("echo something")
+
+  p.callback {
+    puts "Child process echo'd: #{p.out.inspect}"
+    EM.stop
+  }
+
+  p.errback { |err|
+    puts "Error running child process: #{err.inspect}"
+    EM.stop
+  }
+
+  # Add callbacks to listen to the child process' output streams.
+  listeners = p.add_streams_listener { |listener, data|
+    # Do something with the data.
+    # Use listener.name to get the name of the stream.
+    # Use listener.closed? to check if listener is closed.
+    # This block is called exactly once after the listener is closed.
+  }
+
+  # Optionally, wait for all the listeners to be closed.
+  while !listeners.all?(&:closed?) {
+    ...
+  }
+
+  # Sends SIGTERM to the process, and SIGKILL after 5 seconds.
+  # Returns true if this kill was successful, false otherwise.
+  # The timeout is optional, default timeout is 0 (immediate SIGKILL
+  # after SIGTERM).
+  p.kill(5)
+}
+```
+
+# Credit
+
+The implementation for `EM::POSIX::Spawn::Child` and its tests are based on the
+implementation and tests for `POSIX::Spawn::Child`, which is Copyright (c) 2011
+by Ryan Tomayko <[email protected]> and Aman Gupta <[email protected]>.

em-posix-spawn/Rakefile

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+require "bundler/gem_tasks"
+
+require 'rake/testtask'
+
+Rake::TestTask.new 'test' do |t|
+  t.test_files = FileList['test/test_*.rb']
+end

em-posix-spawn/em-posix-spawn.gemspec

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+# -*- encoding: utf-8 -*-
+$:.push File.expand_path("../lib", __FILE__)
+require "em/posix/spawn/version"
+
+Gem::Specification.new do |s|
+  s.name        = "em-posix-spawn"
+  s.version     = EventMachine::POSIX::Spawn::VERSION
+
+  s.authors     = ["Pieter Noordhuis"]
+  s.email       = ["[email protected]"]
+  s.summary     = "EventMachine-aware POSIX::Spawn::Child"
+
+  s.files         = Dir.glob("lib/**/*")
+  s.test_files    = Dir.glob("test/**/*")
+  s.require_paths = ["lib"]
+
+  s.add_runtime_dependency "eventmachine"
+  s.add_runtime_dependency "posix-spawn"
+  s.add_development_dependency "rake"
+  s.add_development_dependency "minitest"
+end

em-posix-spawn/lib/em-posix-spawn.rb

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+require "em/posix/spawn"

em-posix-spawn/lib/em/posix/spawn.rb

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+require "em/posix/spawn/version"
+require "em/posix/spawn/child"