class ParallelInstaller

Public Class Methods

call(*args) click to toggle source
# File lib/bundler/installer/parallel_installer.rb, line 55
def self.call(*args)
  new(*args).call
end
max_threads() click to toggle source

Returns max number of threads machine can handle with a min of 1

# File lib/bundler/installer/parallel_installer.rb, line 60
def self.max_threads
  [Bundler.settings[:jobs].to_i-1, 1].max
end
new(installer, all_specs, size, standalone, force) click to toggle source
# File lib/bundler/installer/parallel_installer.rb, line 64
def initialize(installer, all_specs, size, standalone, force)
  @installer = installer
  @size = size
  @standalone = standalone
  @force = force
  @specs = all_specs.map { |s| SpecInstallation.new(s) }
end

Public Instance Methods

call() click to toggle source
# File lib/bundler/installer/parallel_installer.rb, line 72
def call
  enqueue_specs
  process_specs until @specs.all?(&:installed?)
ensure
  worker_pool && worker_pool.stop
end
collect_post_install_message(spec) click to toggle source
# File lib/bundler/installer/parallel_installer.rb, line 99
def collect_post_install_message(spec)
  Bundler::Installer.post_install_messages[spec.name] = spec.post_install_message
end
enqueue_specs() click to toggle source

Keys in the remains hash represent uninstalled gems specs. We enqueue all gem specs that do not have any dependencies. Later we call this lambda again to install specs that depended on previously installed specifications. We continue until all specs are installed.

# File lib/bundler/installer/parallel_installer.rb, line 108
def enqueue_specs
  @specs.select(&:ready_to_enqueue?).each do |spec|
    if spec.dependencies_installed? @specs
      worker_pool.enq spec
      spec.state = :enqueued
    end
  end
end
process_specs() click to toggle source

Dequeue a spec and save its post-install message and then enqueue the remaining specs. Some specs might've had to wait til this spec was installed to be processed so the call to `enqueue_specs` is important after every dequeue.

# File lib/bundler/installer/parallel_installer.rb, line 92
def process_specs
  spec = worker_pool.deq
  spec.state = :installed
  collect_post_install_message spec if spec.has_post_install_message?
  enqueue_specs
end
worker_pool() click to toggle source
# File lib/bundler/installer/parallel_installer.rb, line 79
def worker_pool
  @worker_pool ||= Bundler::Worker.new @size, lambda { |spec_install, worker_num|
    message = @installer.install_gem_from_spec spec_install.spec, @standalone, worker_num, @force
    spec_install.post_install_message = message unless message.nil?
    spec_install
  }
end