Using a multiprocessing.pool.ThreadPool wih uWSGI -- Tested with gevent

app.py

from gevent.monkey import patch_all
patch_all()

import time
from multiprocessing.pool import ThreadPool

import uwsgi


emitter = ThreadPool(10)


def goodbye():
    print "  ----  Shutdown worker %d" % uwsgi.worker_id()
    emitter.close()
    print "  ----  Waiting emitter to close"
    emitter.join()
    print "  ----  Emitter closed"

uwsgi.atexit = goodbye


def long_task():
    print " -- IN"
    time.sleep(5)
    print " -- OUT"


def application(env, start_response):
    emitter.apply_async(long_task)
    start_response('200 OK', [('Content-Type', 'text/html')])
    return [b"Hello World"]


# uwsgi --http :9090 --wsgi-file app.py --master-fifo uwsgi-fifo --enable-threads --lazy-apps --gevent 10

# Graceful shutdown : 
# echo q > uwsgi-fifo

Do you know why the lazy-apps option is needed?