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Questions - gen-server

Elixir: Finding Prime Numbers with Workers, Only 1 CPU Used

I'm learning Elixir and decided to write a demo application using GenServer and workers to find prime numbers. Application Setup I created my application as follows: $ mix new primes $ cd primes Stru...
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Patrick Bucher

concurrency

elixir

primes

gen-server

Votes: 0

Answers: 1

Latest Answer

I figured out a way to really make my CPU cores work. Now I use concurrency primitives instead of GenServer (prime_workers.exs): defmodule PrimeNumbers do def is_prime(x) when is_number(x) and x == ...
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Patrick Bucher

Is a GenServer :continue call synchronous?

A GenServer handle_call/3 implementation can return :continue to invoke an additional function. Are there any guarantees as to when this function will run relative to other messages? For example, con...
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David Maze

elixir

gen-server

Votes: 0

Answers: 1

Latest Answer

Yes, :continue is synchronous - the continue will be executed immediately after the function you returned it from. Its use-case is exactly that: guaranteeing it will be run right after, which could no...
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Leonardo Dagnino

Erlang: Cannot start supervisor on another node

I have a simple supervisor that looks like this -module(a_sup). -behaviour(supervisor). %% API -export([start_link/0, init/1]). start_link() -> supervisor:start_link({local,?MODULE}, ?MODULE, [...
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scottstots

erlang

gen-server

erlang-supervisor

Votes: 0

Answers: 1

Latest Answer

As per @JoséM's suggestion, the supervisor in the remote node is also linked to the ephemeral RPC process. However since supervisor does not provide a start method, modifying the start_link() method a...
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scottstots

Erlang: ets table does not persist data after gen_server crashes and restarts

I have a gen_server which stores positions of objects in an ets table like this -module(my_gen_server). -record(slot, {position, object}). -behavior(gen_server). %% API -export([start_link/1, init/1,...
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scottstots

erlang

gen-server

erlang-supervisor

ets

Votes: 0

Answers: 1

Latest Answer

ets tables are linked to the process that creates them, that's why if you create the table in a gen_server process when the process terminates, the table is destroyed. If you want the table to persist...
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Brujo Benavides

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