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module Celluloid
class Group
class Spawner < Group
attr_accessor :finalizer
def initialize
super
end
def get(&block)
assert_active
raise ArgumentError, "No block sent to Spawner.get()" unless block_given?
instantiate block
end
def shutdown
@running = false
queue = []
@mutex.synchronize do
loop do
break if @group.empty?
th = @group.shift
th.kill
queue << th
end
end
Thread.pass unless queue.empty?
loop do
break if queue.empty?
queue.pop.join
end
end
def idle?
to_a.select { |t| t[:celluloid_thread_state] == :running }.empty?
end
def busy?
to_a.select { |t| t[:celluloid_thread_state] == :running }.any?
end
private
def instantiate(proc)
thread = Thread.new do
Thread.current[:celluloid_thread_state] = :running
begin
proc.call
rescue ::Exception => ex
Internals::Logger.crash("thread crashed", ex)
Thread.current[:celluloid_thread_state] = :error
ensure
Thread.current[:celluloid_thread_state] = :finished unless Thread.current[:celluloid_thread_state] == :error
@mutex.synchronize { @group.delete Thread.current }
Thread.exit
end
end
@mutex.synchronize { @group << thread }
thread
end
end
end
end
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