Sharing memory across uwsgi workers

foobar.py

"""
Simple worker showing different worker ids sharing/incrementing the same memory region
uwsgi --http :9090 --wsgi-file foobar.py --master --processes 4 --threads 2 --stats 127.0.0.1:9191 --sharedarea 2
Then just keep refreshing localhost:9090
"""

import uwsgi

INT_ORDS = {48, 49, 50, 51, 52, 53, 54, 55, 56, 57}


def memorystuff():
    v = uwsgi.sharedarea_memoryview(0)
    data = v.tobytes()
    int_string = ''
    for char in data:
        char_ord = ord(char)
        if char_ord not in INT_ORDS:
            break
        else:
            int_string += char
    int_data = int((int_string or '0'))
    uwsgi.sharedarea_write(0, 0, str(int_data + 1))
    return str(int_data)


def application(env, start_response):
    memdat = memorystuff()
    start_response('200 OK', [('Content-Type', 'text/html')])
    return [str(uwsgi.worker_id()) + b"Hello World" + memdat]