When the Ruby started early, only start one thread thread, we can get it from Thread.main. We can share data in this way: Thread.main["foo"] = "bar" threads = 2.times.map do |i| sleep 0.5 Thread.new(i) do `notify-send \"#{Thread.main["foo"]} #{i}\"` end end threads.each(&:join) We ca…

There’s no fiber-local storage in Crystal because it would be too limiting. One way around it I’ve seen is to monkeypatch things onto Fiber. Also, since there isn’t a Fiber.main, you can just use a constant: Using the future shard to get the equivalent of Ruby’s Thread#join: require "future" MAIN…

I knew I’d asked on here about it before, but was too tired to search. :joy:

I can’t understand the meaning of your code, it not works too.

Related: Fiber-local state? There doesn’t seem like exists a equivalent, right?

Ha! You’re right, that’s what I get for writing on machine that doesn’t have Crystal installed, while distracted. :smile: Try this one, making sure you have the future.cr shard linked above in your shard.yml: require "future" MAIN_FIBER = Fiber.current MAIN_FIBER.foo = "bar" fibers = Array.new(…

I would strongly recommend against reopening Fiber to add an instance variable unless you have very specific reason to do so. What’s the actual use case, though? What do you need that fiber local variable for? In the example you’re just passing in a value which can be done in a couple of different…

[image] straight-shoota: What’s the actual use case, though? What do you need that fiber local variable for? Here, for example - I am trying to write small “universal domain object file data store” with simple transactions (consistent domain model changes) and that’s why I definitely need som…

Thanks for explain, you probably right, maybe some code in original ruby not necessary when use Crystal, or need to do totally different way, even my final Crystal code might be cut in half. Anyway, i will ask some alternative API for Crystal, e.g. IO.eof? equivalent in Crystal, this should be a g…

What’s the IO you are dealing with? Is it a file, a socket, or what?

Share data cross fiber the the traditional way?

Help & Support

Blacksmoke16 November 3, 2022, 1:27pm 3

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Share data cross fiber the the traditional way?

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