2e81ca2d30
Updated to Rails 2.2.2. Added a couple more Ruby 1.9 fixes, but that's pretty much at a standstill, until one gets Maruku and HTML5lib working right under Ruby 1.9.
70 lines
1.5 KiB
Ruby
Executable file
70 lines
1.5 KiB
Ruby
Executable file
#!/usr/bin/env ruby
|
|
|
|
require 'drb'
|
|
require 'thread'
|
|
|
|
def message(s)
|
|
$stderr.puts "tracker: #{s}" if ENV && ENV["DEBUG_GATEWAY"]
|
|
end
|
|
|
|
class Tracker
|
|
include DRbUndumped
|
|
|
|
def initialize(instances, socket_path)
|
|
@instances = instances
|
|
@socket = File.expand_path(socket_path)
|
|
@active = false
|
|
|
|
@listeners = []
|
|
@instances.times { @listeners << Mutex.new }
|
|
|
|
message "using #{@listeners.length} listeners"
|
|
message "opening socket at #{@socket}"
|
|
|
|
@service = DRb.start_service("drbunix://#{@socket}", self)
|
|
end
|
|
|
|
def with_listener
|
|
message "listener requested"
|
|
|
|
mutex = has_lock = index = nil
|
|
3.times do
|
|
@listeners.each_with_index do |mutex, index|
|
|
has_lock = mutex.try_lock
|
|
break if has_lock
|
|
end
|
|
break if has_lock
|
|
sleep 0.05
|
|
end
|
|
|
|
if has_lock
|
|
message "obtained listener #{index}"
|
|
@active = true
|
|
begin yield index
|
|
ensure
|
|
mutex.unlock
|
|
message "released listener #{index}"
|
|
end
|
|
else
|
|
message "dropping request because no listeners are available!"
|
|
end
|
|
end
|
|
|
|
def background(check_interval = nil)
|
|
if check_interval
|
|
loop do
|
|
sleep check_interval
|
|
message "Idle for #{check_interval}, shutting down" unless @active
|
|
@active = false
|
|
Kernel.exit 0
|
|
end
|
|
else DRb.thread.join
|
|
end
|
|
end
|
|
end
|
|
|
|
socket_path = ARGV.shift
|
|
instances = ARGV.shift.to_i
|
|
t = Tracker.new(instances, socket_path)
|
|
t.background(ARGV.first ? ARGV.shift.to_i : 90)
|