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Contents
# -*- encoding: binary -*-
require 'rainbows/fiber'
# A Fiber-based concurrency model for Ruby 1.9. This uses a pool of
# Fibers to handle client IO to run the application and the root Fiber
# for scheduling and connection acceptance.
#
# This concurrency model is difficult to use with existing applications,
# lacks third-party support, and is thus NOT recommended.
#
# The pool size is equal to the number of +worker_connections+.
# Compared to the ThreadPool model, Fibers are very cheap in terms of
# memory usage so you can have more active connections. This model
# supports a streaming "rack.input" with lightweight concurrency.
# Applications are strongly advised to wrap all slow IO objects
# (sockets, pipes) using the Rainbows::Fiber::IO class whenever
# possible.
module Rainbows::FiberPool
include Rainbows::Fiber::Base
def worker_loop(worker) # :nodoc:
init_worker_process(worker)
pool = []
worker_connections.times {
Fiber.new {
process(Fiber.yield) while pool << Fiber.current
}.resume # resume to hit Fiber.yield so it waits on a client
}
Rainbows::Fiber::Base.setup(self.class, app)
begin
schedule do |l|
fib = pool.shift or break # let another worker process take it
if io = l.kgio_tryaccept
fib.resume(io)
else
pool << fib
end
end
rescue => e
Rainbows::Error.listen_loop(e)
end while Rainbows.cur_alive
end
end
Version data entries
7 entries across 7 versions & 1 rubygems