/usr/lib/ruby/vendor_ruby/rake/multi_task.rb is in rake 0.9.2.2-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 | module Rake
# Same as a regular task, but the immediate prerequisites are done in
# parallel using Ruby threads.
#
class MultiTask < Task
private
def invoke_prerequisites(args, invocation_chain)
threads = @prerequisites.collect { |p|
Thread.new(p) { |r| application[r, @scope].invoke_with_call_chain(args, invocation_chain) }
}
threads.each { |t| t.join }
end
end
end
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