read_binary

# File lib/rubygems.rb, line 868
  def self.read_binary(path)
    File.open path, 'rb+' do |f|
      f.flock(File::LOCK_EX)
      f.read
    end
  rescue *READ_BINARY_ERRORS
    File.open path, 'rb' do |f|
      f.read
    end
  rescue Errno::ENOLCK # NFS
    if Thread.main != Thread.current
      raise
    else
      File.open path, 'rb' do |f|
        f.read
      end
    end
  end