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  • Having two gen_servers call each other cyclically was one of the first dedakocls I ran into implementing Reia, a hybrid object/actor language for the Erlang VM. Reia uses gen_server as the basis of its objects, and as it guises gen_server calls in traditional obj.method(arg1, arg2...) style syntax it's easy to accidentally have two objects call each other cyclically.I believe we have a solution though: someone on the mailing list proposed a rather simple mechanism for cycle detection (by generating a unique ref for each call chain).Rather than deadlocking on cyclical calls, Reia objects will immediately crash when called cyclically. There's no need to depend on timeouts to detect the problem.
  • Having two gen_servers call each other cyclically was one of the first dedakocls I ran into implementing Reia, a hybrid object/actor language for the Erlang VM. Reia uses gen_server as the basis of its objects, and as it guises gen_server calls in traditional obj.method(arg1, arg2...) style syntax it's easy to accidentally have two objects call each other cyclically.I believe we have a solution though: someone on the mailing list proposed a rather simple mechanism for cycle detection (by generating a unique ref for each call chain).Rather than deadlocking on cyclical calls, Reia objects will immediately crash when called cyclically. There's no need to depend on timeouts to detect the problem.<br />
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  • Re:Developer Recruitment Exercise
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  • 2012-10-23T23:04:20Z
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  • Re:Developer Recruitment Exercise
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