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-rw-r--r--Doc/includes/mp_webserver.py70
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diff --git a/Doc/includes/mp_webserver.py b/Doc/includes/mp_webserver.py
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--- a/Doc/includes/mp_webserver.py
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-#
-# Example where a pool of http servers share a single listening socket
-#
-# On Windows this module depends on the ability to pickle a socket
-# object so that the worker processes can inherit a copy of the server
-# object. (We import `multiprocessing.reduction` to enable this pickling.)
-#
-# Not sure if we should synchronize access to `socket.accept()` method by
-# using a process-shared lock -- does not seem to be necessary.
-#
-# Copyright (c) 2006-2008, R Oudkerk
-# All rights reserved.
-#
-
-import os
-import sys
-
-from multiprocessing import Process, current_process, freeze_support
-from http.server import HTTPServer
-from http.server import SimpleHTTPRequestHandler
-
-if sys.platform == 'win32':
- import multiprocessing.reduction # make sockets pickable/inheritable
-
-
-def note(format, *args):
- sys.stderr.write('[%s]\t%s\n' % (current_process().name, format % args))
-
-
-class RequestHandler(SimpleHTTPRequestHandler):
- # we override log_message() to show which process is handling the request
- def log_message(self, format, *args):
- note(format, *args)
-
-def serve_forever(server):
- note('starting server')
- try:
- server.serve_forever()
- except KeyboardInterrupt:
- pass
-
-
-def runpool(address, number_of_processes):
- # create a single server object -- children will each inherit a copy
- server = HTTPServer(address, RequestHandler)
-
- # create child processes to act as workers
- for i in range(number_of_processes - 1):
- Process(target=serve_forever, args=(server,)).start()
-
- # main process also acts as a worker
- serve_forever(server)
-
-
-def test():
- DIR = os.path.join(os.path.dirname(__file__), '..')
- ADDRESS = ('localhost', 8000)
- NUMBER_OF_PROCESSES = 4
-
- print('Serving at http://%s:%d using %d worker processes' % \
- (ADDRESS[0], ADDRESS[1], NUMBER_OF_PROCESSES))
- print('To exit press Ctrl-' + ['C', 'Break'][sys.platform=='win32'])
-
- os.chdir(DIR)
- runpool(ADDRESS, NUMBER_OF_PROCESSES)
-
-
-if __name__ == '__main__':
- freeze_support()
- test()