Class | PhusionPassenger::Rack::ApplicationSpawner |
In: |
lib/phusion_passenger/rack/application_spawner.rb
|
Parent: | Object |
Class for spawning Rack applications.
# File lib/phusion_passenger/rack/application_spawner.rb, line 39 39: def self.spawn_application(*args) 40: @@instance ||= ApplicationSpawner.new 41: @@instance.spawn_application(*args) 42: end
Spawn an instance of the given Rack application. When successful, an Application object will be returned, which represents the spawned application.
Accepts the same options as Railz::ApplicationSpawner#initialize.
Raises:
# File lib/phusion_passenger/rack/application_spawner.rb, line 54 54: def spawn_application(app_root, options = {}) 55: options = sanitize_spawn_options(options) 56: 57: a, b = UNIXSocket.pair 58: pid = safe_fork(self.class.to_s, true) do 59: a.close 60: 61: file_descriptors_to_leave_open = [0, 1, 2, b.fileno] 62: NativeSupport.close_all_file_descriptors(file_descriptors_to_leave_open) 63: close_all_io_objects_for_fds(file_descriptors_to_leave_open) 64: 65: run(MessageChannel.new(b), app_root, options) 66: end 67: b.close 68: Process.waitpid(pid) rescue nil 69: 70: channel = MessageChannel.new(a) 71: unmarshal_and_raise_errors(channel, !!options["print_exceptions"], "rack") 72: 73: # No exception was raised, so spawning succeeded. 74: pid, socket_name, socket_type = channel.read 75: if pid.nil? 76: raise IOError, "Connection closed" 77: end 78: owner_pipe = channel.recv_io 79: return Application.new(@app_root, pid, socket_name, 80: socket_type, owner_pipe) 81: end