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|
# frozen_string_literal: true
# Copyright, 2020, by Samuel G. D. Williams. <http://www.codeotaku.com>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
require_relative 'notification'
module Async
module IO
class Threads
def initialize(parent: nil)
@parent = parent
end
if Async::Scheduler.supported?
def async(parent: (@parent or Task.current))
parent.async do
thread = ::Thread.new do
yield
end
thread.join
rescue Stop
if thread&.alive?
thread.raise(Stop)
end
begin
thread.join
rescue Stop
# Ignore.
end
end
end
else
def async(parent: (@parent or Task.current))
parent.async do |task|
notification = Async::IO::Notification.new
thread = ::Thread.new do
yield
ensure
notification.signal
end
task.annotate "Waiting for thread to finish..."
notification.wait
thread.value
ensure
if thread&.alive?
thread.raise(Stop)
begin
thread.join
rescue Stop
# Ignore.
end
end
notification&.close
end
end
end
end
end
end
|
