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many-headed

Many headed is a trivial little application of the unix fork mechanism.

It's designed to supervise N workers (the heads of the hydra), restarting them if they fail to complete successfully.

The usage is as follows:

require "many-headed"

head_number = ManyHeaded.hydra 5

# We now have 5 processes at this point, plus the original process acting as a supervisor.

some_code

If any of the heads fails (exits with a non-zero status code - e.g. due to an uncaught exception), it will restart automatically from the point at which hydra was called.

Note on Patches/Pull Requests

  • Fork the project.

  • Make your feature addition or bug fix.

  • Add tests for it. This is important so I don't break it in a future version unintentionally.

  • Commit, do not mess with rakefile, version, or history. (if you want to have your own version, that is fine but bump version in a commit by itself I can ignore when I pull)

  • Send me a pull request. Bonus points for topic branches.

Copyright

Copyright © 2010 David R. MacIver. See LICENSE for details.