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Contents
# Copyright, 2018, 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 'generic'
module Async
module IO
# A cross-reactor/process notification pipe.
class Notification
def initialize
pipe = ::IO.pipe
# We could call wait and signal from different reactors/threads/processes, so we don't create wrappers here, because they are not thread safe by design.
@input = pipe.first
@output = pipe.last
end
def close
@input.close
@output.close
end
# Wait for signal to be called.
# @return [Object]
def wait
wrapper = Async::IO::Generic.new(@input)
wrapper.read(1)
ensure
# Remove the wrapper from the reactor.
wrapper.reactor = nil
end
# Signal to a given task that it should resume operations.
# @return [void]
def signal
wrapper = Async::IO::Generic.new(@output)
wrapper.write(".")
ensure
wrapper.reactor = nil
end
end
end
end
Version data entries
43 entries across 43 versions & 1 rubygems