multicore

Multi-process launch of Crystal app

Installation

1. Add the dependency to your shard.yml:

   dependencies:
     multicore:
       github: Hentioe/multicore.cr
   

2. Run shards install

Usage

require "multicore"

def start
  process_id = ENV["MULTICORE_ID"]?
  puts "Starting process: #{process_id}" if process_id
  sleep
end

Multicore.startup(4) do
  start
end

# => Starting process: 1
# => Starting process: 2
# => Starting process: 3
# => Starting process: 4

The meaning of the first parameter n of Multicore#startup:

• n < 0, No fork new process, nothing happens
• n == 0, The number of processes is the number of CPUs
• n > 0, Specify the number of processes

Contributing

1. Fork it (https://github.com/Hentioe/multicore.cr.git)
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request

Contributors

• Hentioe - creator and maintainer