Ruby timeout a block of code after n *milli* seconds

In Ruby, I need to time out the execution of a block of code after n milli seconds. I know that the Ruby Timeout lib开发者_StackOverflow中文版rary supports timeouts in seconds:

http://ruby-doc.org/stdlib/libdoc/timeout/rdoc/index.html

Is this possible?

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Just use a decimal value for the timeout. Example for n milliseconds:

Timeout::timeout(n / 1000.0) { sleep(100) }