Class: PhusionPassenger::WSGI::ApplicationSpawner

Class PhusionPassenger::WSGI::ApplicationSpawner |
In: | lib/phusion_passenger/wsgi/application_spawner.rb
Parent: | Object

Class for spawning WSGI applications.

Methods

- spawn_application
- spawn_application

Included Modules

- Utils

Constants

REQUEST_HANDLER | = | File.expand_path(File.dirname(__FILE__) + "/request_handler.py")

Public Class methods
spawn_application(*args)

[ show source ]

        # File lib/phusion_passenger/wsgi/application_spawner.rb, line 40
    40:         def self.spawn_application(*args)
    41:                 @@instance ||= ApplicationSpawner.new
    42:                 @@instance.spawn_application(*args)
    43:         end

Public Instance methods
spawn_application(options)

Spawn an instance of the given WSGI application. When successful, an Application object will be returned, which represents the spawned application.

Raises:

- AppInitError: The WSGI application raised an exception or called exit() during startup.
- SystemCallError, IOError, SocketError: Something went wrong.

[ show source ]

        # File lib/phusion_passenger/wsgi/application_spawner.rb, line 53
    53:         def spawn_application(options)
    54:                 a, b = UNIXSocket.pair
    55:                 pid = safe_fork(self.class.to_s, true) do
    56:                         a.close
    57:
    58:                         file_descriptors_to_leave_open = [0, 1, 2, b.fileno]
    59:                         NativeSupport.close_all_file_descriptors(file_descriptors_to_leave_open)
    60:                         close_all_io_objects_for_fds(file_descriptors_to_leave_open)
    61:
    62:                         run(MessageChannel.new(b), options)
    63:                 end
    64:                 b.close
    65:                 Process.waitpid(pid) rescue nil
    66:
    67:                 channel = MessageChannel.new(a)
    68:                 return AppProcess.read_from_channel(channel)
    69:         end