write_binary

# File lib/rubygems.rb, line 870
  def self.write_binary(path, data)
    open(path, 'wb') do |io|
      begin
        io.flock(File::LOCK_EX)
      rescue *WRITE_BINARY_ERRORS
      end
      io.write data
    end
  rescue Errno::ENOLCK # NFS
    if Thread.main != Thread.current
      raise
    else
      open(path, 'wb') do |io|
        io.write data
      end
    end
  end