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module ProcessSpecs
class Daemonizer
attr_reader :input, :data
def initialize
# Fast feedback for implementations without Process.daemon
raise NotImplementedError, "Process.daemon is not implemented" unless Process.respond_to? :daemon
@script = fixture __FILE__, "daemon.rb"
@input = tmp("process_daemon_input_file")
@data = tmp("process_daemon_data_file")
@args = []
end
def wait_for_daemon
sleep 0.001 until File.exist?(@data) and File.size?(@data)
end
def invoke(behavior, arguments=[])
args = Marshal.dump(arguments).unpack("H*")
args << @input << @data << behavior
ruby_exe @script, args: args
wait_for_daemon
return unless File.exist? @data
File.open(@data, "rb") { |f| return f.read.chomp }
end
end
class Signalizer
attr_reader :pid_file, :pid
def initialize(scenario=nil)
platform_is :windows do
fail "not supported on windows"
end
@script = fixture __FILE__, "kill.rb"
@pid = nil
@pid_file = tmp("process_kill_signal_file")
rm_r @pid_file
@thread = Thread.new do
Thread.current.abort_on_exception = true
args = [@pid_file]
args << scenario if scenario
@result = ruby_exe @script, args: args
end
Thread.pass while @thread.status and !File.exist?(@pid_file)
while @thread.status && (@pid.nil? || @pid == 0)
@pid = IO.read(@pid_file).chomp.to_i
end
end
def wait_on_result
# Ensure the process exits
begin
Process.kill :TERM, pid if pid
rescue Errno::ESRCH
# Ignore the process not existing
end
@thread.join
end
def cleanup
wait_on_result
rm_r pid_file
end
def result
wait_on_result
@result.chomp if @result
end
end
end
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