Sha256: f226d9c239a0576b754299024e9906732f740356cd4c7decfd9c20c235690da4
Contents?: true
Size: 961 Bytes
Versions: 4
Compression:
Stored size: 961 Bytes
Contents
unless defined? Fiber
require 'thread'
class FiberError < StandardError; end
class Fiber
def initialize
raise ArgumentError, 'new Fiber requires a block' unless block_given?
@yield = Queue.new
@resume = Queue.new
@thread = Thread.new{ @yield.push [*yield(*wait)] }
@thread.abort_on_exception = true
@thread[:fiber] = self
end
attr_reader :yield, :thread
def resume *args
raise FiberError, 'dead fiber called' unless @thread.alive?
@resume.push(args)
result = @yield.pop
result.size > 1 ? result : result.first
end
def wait
@resume.pop
end
def self.yield *args
raise FiberError, "can't yield from root fiber" unless fiber = Thread.current[:fiber]
fiber.yield.push(args)
result = fiber.wait
result.size > 1 ? result : result.first
end
def inspect
"#<#{self.class}:0x#{self.object_id.to_s(16)}>"
end
end
end
Version data entries
4 entries across 4 versions & 1 rubygems