From: chris@... Date: 2021-01-13T21:45:09+00:00 Subject: [ruby-core:102074] [Ruby master Feature#12607] Ruby needs an atomic integer Issue #12607 has been updated by chrisseaton (Chris Seaton). > What is the use case for this atomic integer? For example for issuing unique IDs across multiple Ractors. > or in fact any integer atomic operations other than += 1 For example a CAS to update a bank balance is a common requirement. ---------------------------------------- Feature #12607: Ruby needs an atomic integer https://bugs.ruby-lang.org/issues/12607#change-89934 * Author: shyouhei (Shyouhei Urabe) * Status: Feedback * Priority: Normal * Assignee: ko1 (Koichi Sasada) ---------------------------------------- (This one was derived from bug #12463) Although I don't think += would become atomic, at the same time I understand Rodrigo's needs of _easier_ counter variable that resists inter-thread tampering. I don't think ruby's Integer class can be used for that purpose for reasons (mainly because it is not designed with threads in mind). Rather we should introduce a integer class which is carefully designed. Why not import Concurrent::AtomicFixnum into core? -- https://bugs.ruby-lang.org/ Unsubscribe: