Add project files.

env/Lib/site-packages/gunicorn/workers/__init__.py

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+#
+# This file is part of gunicorn released under the MIT license.
+# See the NOTICE for more information.
+
+# supported gunicorn workers.
+SUPPORTED_WORKERS = {
+    "sync": "gunicorn.workers.sync.SyncWorker",
+    "eventlet": "gunicorn.workers.geventlet.EventletWorker",
+    "gevent": "gunicorn.workers.ggevent.GeventWorker",
+    "gevent_wsgi": "gunicorn.workers.ggevent.GeventPyWSGIWorker",
+    "gevent_pywsgi": "gunicorn.workers.ggevent.GeventPyWSGIWorker",
+    "tornado": "gunicorn.workers.gtornado.TornadoWorker",
+    "gthread": "gunicorn.workers.gthread.ThreadWorker",
+}

env/Lib/site-packages/gunicorn/workers/base.py

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+#
+# This file is part of gunicorn released under the MIT license.
+# See the NOTICE for more information.
+
+import io
+import os
+import signal
+import sys
+import time
+import traceback
+from datetime import datetime
+from random import randint
+from ssl import SSLError
+
+from gunicorn import util
+from gunicorn.http.errors import (
+    ForbiddenProxyRequest, InvalidHeader,
+    InvalidHeaderName, InvalidHTTPVersion,
+    InvalidProxyLine, InvalidRequestLine,
+    InvalidRequestMethod, InvalidSchemeHeaders,
+    LimitRequestHeaders, LimitRequestLine,
+    UnsupportedTransferCoding,
+    ConfigurationProblem, ObsoleteFolding,
+)
+from gunicorn.http.wsgi import Response, default_environ
+from gunicorn.reloader import reloader_engines
+from gunicorn.workers.workertmp import WorkerTmp
+
+
+class Worker:
+
+    SIGNALS = [getattr(signal, "SIG%s" % x) for x in (
+        "ABRT HUP QUIT INT TERM USR1 USR2 WINCH CHLD".split()
+    )]
+
+    PIPE = []
+
+    def __init__(self, age, ppid, sockets, app, timeout, cfg, log):
+        """\
+        This is called pre-fork so it shouldn't do anything to the
+        current process. If there's a need to make process wide
+        changes you'll want to do that in ``self.init_process()``.
+        """
+        self.age = age
+        self.pid = "[booting]"
+        self.ppid = ppid
+        self.sockets = sockets
+        self.app = app
+        self.timeout = timeout
+        self.cfg = cfg
+        self.booted = False
+        self.aborted = False
+        self.reloader = None
+
+        self.nr = 0
+
+        if cfg.max_requests > 0:
+            jitter = randint(0, cfg.max_requests_jitter)
+            self.max_requests = cfg.max_requests + jitter
+        else:
+            self.max_requests = sys.maxsize
+
+        self.alive = True
+        self.log = log
+        self.tmp = WorkerTmp(cfg)
+
+    def __str__(self):
+        return "<Worker %s>" % self.pid
+
+    def notify(self):
+        """\
+        Your worker subclass must arrange to have this method called
+        once every ``self.timeout`` seconds. If you fail in accomplishing
+        this task, the master process will murder your workers.
+        """
+        self.tmp.notify()
+
+    def run(self):
+        """\
+        This is the mainloop of a worker process. You should override
+        this method in a subclass to provide the intended behaviour
+        for your particular evil schemes.
+        """
+        raise NotImplementedError()
+
+    def init_process(self):
+        """\
+        If you override this method in a subclass, the last statement
+        in the function should be to call this method with
+        super().init_process() so that the ``run()`` loop is initiated.
+        """
+
+        # set environment' variables
+        if self.cfg.env:
+            for k, v in self.cfg.env.items():
+                os.environ[k] = v
+
+        util.set_owner_process(self.cfg.uid, self.cfg.gid,
+                               initgroups=self.cfg.initgroups)
+
+        # Reseed the random number generator
+        util.seed()
+
+        # For waking ourselves up
+        self.PIPE = os.pipe()
+        for p in self.PIPE:
+            util.set_non_blocking(p)
+            util.close_on_exec(p)
+
+        # Prevent fd inheritance
+        for s in self.sockets:
+            util.close_on_exec(s)
+        util.close_on_exec(self.tmp.fileno())
+
+        self.wait_fds = self.sockets + [self.PIPE[0]]
+
+        self.log.close_on_exec()
+
+        self.init_signals()
+
+        # start the reloader
+        if self.cfg.reload:
+            def changed(fname):
+                self.log.info("Worker reloading: %s modified", fname)
+                self.alive = False
+                os.write(self.PIPE[1], b"1")
+                self.cfg.worker_int(self)
+                time.sleep(0.1)
+                sys.exit(0)
+
+            reloader_cls = reloader_engines[self.cfg.reload_engine]
+            self.reloader = reloader_cls(extra_files=self.cfg.reload_extra_files,
+                                         callback=changed)
+
+        self.load_wsgi()
+        if self.reloader:
+            self.reloader.start()
+
+        self.cfg.post_worker_init(self)
+
+        # Enter main run loop
+        self.booted = True
+        self.run()
+
+    def load_wsgi(self):
+        try:
+            self.wsgi = self.app.wsgi()
+        except SyntaxError as e:
+            if not self.cfg.reload:
+                raise
+
+            self.log.exception(e)
+
+            # fix from PR #1228
+            # storing the traceback into exc_tb will create a circular reference.
+            # per https://docs.python.org/2/library/sys.html#sys.exc_info warning,
+            # delete the traceback after use.
+            try:
+                _, exc_val, exc_tb = sys.exc_info()
+                self.reloader.add_extra_file(exc_val.filename)
+
+                tb_string = io.StringIO()
+                traceback.print_tb(exc_tb, file=tb_string)
+                self.wsgi = util.make_fail_app(tb_string.getvalue())
+            finally:
+                del exc_tb
+
+    def init_signals(self):
+        # reset signaling
+        for s in self.SIGNALS:
+            signal.signal(s, signal.SIG_DFL)
+        # init new signaling
+        signal.signal(signal.SIGQUIT, self.handle_quit)
+        signal.signal(signal.SIGTERM, self.handle_exit)
+        signal.signal(signal.SIGINT, self.handle_quit)
+        signal.signal(signal.SIGWINCH, self.handle_winch)
+        signal.signal(signal.SIGUSR1, self.handle_usr1)
+        signal.signal(signal.SIGABRT, self.handle_abort)
+
+        # Don't let SIGTERM and SIGUSR1 disturb active requests
+        # by interrupting system calls
+        signal.siginterrupt(signal.SIGTERM, False)
+        signal.siginterrupt(signal.SIGUSR1, False)
+
+        if hasattr(signal, 'set_wakeup_fd'):
+            signal.set_wakeup_fd(self.PIPE[1])
+
+    def handle_usr1(self, sig, frame):
+        self.log.reopen_files()
+
+    def handle_exit(self, sig, frame):
+        self.alive = False
+
+    def handle_quit(self, sig, frame):
+        self.alive = False
+        # worker_int callback
+        self.cfg.worker_int(self)
+        time.sleep(0.1)
+        sys.exit(0)
+
+    def handle_abort(self, sig, frame):
+        self.alive = False
+        self.cfg.worker_abort(self)
+        sys.exit(1)
+
+    def handle_error(self, req, client, addr, exc):
+        request_start = datetime.now()
+        addr = addr or ('', -1)  # unix socket case
+        if isinstance(exc, (
+            InvalidRequestLine, InvalidRequestMethod,
+            InvalidHTTPVersion, InvalidHeader, InvalidHeaderName,
+            LimitRequestLine, LimitRequestHeaders,
+            InvalidProxyLine, ForbiddenProxyRequest,
+            InvalidSchemeHeaders, UnsupportedTransferCoding,
+            ConfigurationProblem, ObsoleteFolding,
+            SSLError,
+        )):
+
+            status_int = 400
+            reason = "Bad Request"
+
+            if isinstance(exc, InvalidRequestLine):
+                mesg = "Invalid Request Line '%s'" % str(exc)
+            elif isinstance(exc, InvalidRequestMethod):
+                mesg = "Invalid Method '%s'" % str(exc)
+            elif isinstance(exc, InvalidHTTPVersion):
+                mesg = "Invalid HTTP Version '%s'" % str(exc)
+            elif isinstance(exc, UnsupportedTransferCoding):
+                mesg = "%s" % str(exc)
+                status_int = 501
+            elif isinstance(exc, ConfigurationProblem):
+                mesg = "%s" % str(exc)
+                status_int = 500
+            elif isinstance(exc, ObsoleteFolding):
+                mesg = "%s" % str(exc)
+            elif isinstance(exc, (InvalidHeaderName, InvalidHeader,)):
+                mesg = "%s" % str(exc)
+                if not req and hasattr(exc, "req"):
+                    req = exc.req  # for access log
+            elif isinstance(exc, LimitRequestLine):
+                mesg = "%s" % str(exc)
+            elif isinstance(exc, LimitRequestHeaders):
+                reason = "Request Header Fields Too Large"
+                mesg = "Error parsing headers: '%s'" % str(exc)
+                status_int = 431
+            elif isinstance(exc, InvalidProxyLine):
+                mesg = "'%s'" % str(exc)
+            elif isinstance(exc, ForbiddenProxyRequest):
+                reason = "Forbidden"
+                mesg = "Request forbidden"
+                status_int = 403
+            elif isinstance(exc, InvalidSchemeHeaders):
+                mesg = "%s" % str(exc)
+            elif isinstance(exc, SSLError):
+                reason = "Forbidden"
+                mesg = "'%s'" % str(exc)
+                status_int = 403
+
+            msg = "Invalid request from ip={ip}: {error}"
+            self.log.warning(msg.format(ip=addr[0], error=str(exc)))
+        else:
+            if hasattr(req, "uri"):
+                self.log.exception("Error handling request %s", req.uri)
+            else:
+                self.log.exception("Error handling request (no URI read)")
+            status_int = 500
+            reason = "Internal Server Error"
+            mesg = ""
+
+        if req is not None:
+            request_time = datetime.now() - request_start
+            environ = default_environ(req, client, self.cfg)
+            environ['REMOTE_ADDR'] = addr[0]
+            environ['REMOTE_PORT'] = str(addr[1])
+            resp = Response(req, client, self.cfg)
+            resp.status = "%s %s" % (status_int, reason)
+            resp.response_length = len(mesg)
+            self.log.access(resp, req, environ, request_time)
+
+        try:
+            util.write_error(client, status_int, reason, mesg)
+        except Exception:
+            self.log.debug("Failed to send error message.")
+
+    def handle_winch(self, sig, fname):
+        # Ignore SIGWINCH in worker. Fixes a crash on OpenBSD.
+        self.log.debug("worker: SIGWINCH ignored.")

env/Lib/site-packages/gunicorn/workers/base_async.py

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+#
+# This file is part of gunicorn released under the MIT license.
+# See the NOTICE for more information.
+
+from datetime import datetime
+import errno
+import socket
+import ssl
+import sys
+
+from gunicorn import http
+from gunicorn.http import wsgi
+from gunicorn import util
+from gunicorn.workers import base
+
+ALREADY_HANDLED = object()
+
+
+class AsyncWorker(base.Worker):
+
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        self.worker_connections = self.cfg.worker_connections
+
+    def timeout_ctx(self):
+        raise NotImplementedError()
+
+    def is_already_handled(self, respiter):
+        # some workers will need to overload this function to raise a StopIteration
+        return respiter == ALREADY_HANDLED
+
+    def handle(self, listener, client, addr):
+        req = None
+        try:
+            parser = http.RequestParser(self.cfg, client, addr)
+            try:
+                listener_name = listener.getsockname()
+                if not self.cfg.keepalive:
+                    req = next(parser)
+                    self.handle_request(listener_name, req, client, addr)
+                else:
+                    # keepalive loop
+                    proxy_protocol_info = {}
+                    while True:
+                        req = None
+                        with self.timeout_ctx():
+                            req = next(parser)
+                        if not req:
+                            break
+                        if req.proxy_protocol_info:
+                            proxy_protocol_info = req.proxy_protocol_info
+                        else:
+                            req.proxy_protocol_info = proxy_protocol_info
+                        self.handle_request(listener_name, req, client, addr)
+            except http.errors.NoMoreData as e:
+                self.log.debug("Ignored premature client disconnection. %s", e)
+            except StopIteration as e:
+                self.log.debug("Closing connection. %s", e)
+            except ssl.SSLError:
+                # pass to next try-except level
+                util.reraise(*sys.exc_info())
+            except OSError:
+                # pass to next try-except level
+                util.reraise(*sys.exc_info())
+            except Exception as e:
+                self.handle_error(req, client, addr, e)
+        except ssl.SSLError as e:
+            if e.args[0] == ssl.SSL_ERROR_EOF:
+                self.log.debug("ssl connection closed")
+                client.close()
+            else:
+                self.log.debug("Error processing SSL request.")
+                self.handle_error(req, client, addr, e)
+        except OSError as e:
+            if e.errno not in (errno.EPIPE, errno.ECONNRESET, errno.ENOTCONN):
+                self.log.exception("Socket error processing request.")
+            else:
+                if e.errno == errno.ECONNRESET:
+                    self.log.debug("Ignoring connection reset")
+                elif e.errno == errno.ENOTCONN:
+                    self.log.debug("Ignoring socket not connected")
+                else:
+                    self.log.debug("Ignoring EPIPE")
+        except BaseException as e:
+            self.handle_error(req, client, addr, e)
+        finally:
+            util.close(client)
+
+    def handle_request(self, listener_name, req, sock, addr):
+        request_start = datetime.now()
+        environ = {}
+        resp = None
+        try:
+            self.cfg.pre_request(self, req)
+            resp, environ = wsgi.create(req, sock, addr,
+                                        listener_name, self.cfg)
+            environ["wsgi.multithread"] = True
+            self.nr += 1
+            if self.nr >= self.max_requests:
+                if self.alive:
+                    self.log.info("Autorestarting worker after current request.")
+                    self.alive = False
+
+            if not self.alive or not self.cfg.keepalive:
+                resp.force_close()
+
+            respiter = self.wsgi(environ, resp.start_response)
+            if self.is_already_handled(respiter):
+                return False
+            try:
+                if isinstance(respiter, environ['wsgi.file_wrapper']):
+                    resp.write_file(respiter)
+                else:
+                    for item in respiter:
+                        resp.write(item)
+                resp.close()
+            finally:
+                request_time = datetime.now() - request_start
+                self.log.access(resp, req, environ, request_time)
+                if hasattr(respiter, "close"):
+                    respiter.close()
+            if resp.should_close():
+                raise StopIteration()
+        except StopIteration:
+            raise
+        except OSError:
+            # If the original exception was a socket.error we delegate
+            # handling it to the caller (where handle() might ignore it)
+            util.reraise(*sys.exc_info())
+        except Exception:
+            if resp and resp.headers_sent:
+                # If the requests have already been sent, we should close the
+                # connection to indicate the error.
+                self.log.exception("Error handling request")
+                try:
+                    sock.shutdown(socket.SHUT_RDWR)
+                    sock.close()
+                except OSError:
+                    pass
+                raise StopIteration()
+            raise
+        finally:
+            try:
+                self.cfg.post_request(self, req, environ, resp)
+            except Exception:
+                self.log.exception("Exception in post_request hook")
+        return True

env/Lib/site-packages/gunicorn/workers/geventlet.py

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+#
+# This file is part of gunicorn released under the MIT license.
+# See the NOTICE for more information.
+
+from functools import partial
+import sys
+
+try:
+    import eventlet
+except ImportError:
+    raise RuntimeError("eventlet worker requires eventlet 0.24.1 or higher")
+else:
+    from packaging.version import parse as parse_version
+    if parse_version(eventlet.__version__) < parse_version('0.24.1'):
+        raise RuntimeError("eventlet worker requires eventlet 0.24.1 or higher")
+
+from eventlet import hubs, greenthread
+from eventlet.greenio import GreenSocket
+import eventlet.wsgi
+import greenlet
+
+from gunicorn.workers.base_async import AsyncWorker
+from gunicorn.sock import ssl_wrap_socket
+
+# ALREADY_HANDLED is removed in 0.30.3+ now it's `WSGI_LOCAL.already_handled: bool`
+# https://github.com/eventlet/eventlet/pull/544
+EVENTLET_WSGI_LOCAL = getattr(eventlet.wsgi, "WSGI_LOCAL", None)
+EVENTLET_ALREADY_HANDLED = getattr(eventlet.wsgi, "ALREADY_HANDLED", None)
+
+
+def _eventlet_socket_sendfile(self, file, offset=0, count=None):
+    # Based on the implementation in gevent which in turn is slightly
+    # modified from the standard library implementation.
+    if self.gettimeout() == 0:
+        raise ValueError("non-blocking sockets are not supported")
+    if offset:
+        file.seek(offset)
+    blocksize = min(count, 8192) if count else 8192
+    total_sent = 0
+    # localize variable access to minimize overhead
+    file_read = file.read
+    sock_send = self.send
+    try:
+        while True:
+            if count:
+                blocksize = min(count - total_sent, blocksize)
+                if blocksize <= 0:
+                    break
+            data = memoryview(file_read(blocksize))
+            if not data:
+                break  # EOF
+            while True:
+                try:
+                    sent = sock_send(data)
+                except BlockingIOError:
+                    continue
+                else:
+                    total_sent += sent
+                    if sent < len(data):
+                        data = data[sent:]
+                    else:
+                        break
+        return total_sent
+    finally:
+        if total_sent > 0 and hasattr(file, 'seek'):
+            file.seek(offset + total_sent)
+
+
+def _eventlet_serve(sock, handle, concurrency):
+    """
+    Serve requests forever.
+
+    This code is nearly identical to ``eventlet.convenience.serve`` except
+    that it attempts to join the pool at the end, which allows for gunicorn
+    graceful shutdowns.
+    """
+    pool = eventlet.greenpool.GreenPool(concurrency)
+    server_gt = eventlet.greenthread.getcurrent()
+
+    while True:
+        try:
+            conn, addr = sock.accept()
+            gt = pool.spawn(handle, conn, addr)
+            gt.link(_eventlet_stop, server_gt, conn)
+            conn, addr, gt = None, None, None
+        except eventlet.StopServe:
+            sock.close()
+            pool.waitall()
+            return
+
+
+def _eventlet_stop(client, server, conn):
+    """
+    Stop a greenlet handling a request and close its connection.
+
+    This code is lifted from eventlet so as not to depend on undocumented
+    functions in the library.
+    """
+    try:
+        try:
+            client.wait()
+        finally:
+            conn.close()
+    except greenlet.GreenletExit:
+        pass
+    except Exception:
+        greenthread.kill(server, *sys.exc_info())
+
+
+def patch_sendfile():
+    # As of eventlet 0.25.1, GreenSocket.sendfile doesn't exist,
+    # meaning the native implementations of socket.sendfile will be used.
+    # If os.sendfile exists, it will attempt to use that, failing explicitly
+    # if the socket is in non-blocking mode, which the underlying
+    # socket object /is/. Even the regular _sendfile_use_send will
+    # fail in that way; plus, it would use the underlying socket.send which isn't
+    # properly cooperative. So we have to monkey-patch a working socket.sendfile()
+    # into GreenSocket; in this method, `self.send` will be the GreenSocket's
+    # send method which is properly cooperative.
+    if not hasattr(GreenSocket, 'sendfile'):
+        GreenSocket.sendfile = _eventlet_socket_sendfile
+
+
+class EventletWorker(AsyncWorker):
+
+    def patch(self):
+        hubs.use_hub()
+        eventlet.monkey_patch()
+        patch_sendfile()
+
+    def is_already_handled(self, respiter):
+        # eventlet >= 0.30.3
+        if getattr(EVENTLET_WSGI_LOCAL, "already_handled", None):
+            raise StopIteration()
+        # eventlet < 0.30.3
+        if respiter == EVENTLET_ALREADY_HANDLED:
+            raise StopIteration()
+        return super().is_already_handled(respiter)
+
+    def init_process(self):
+        self.patch()
+        super().init_process()
+
+    def handle_quit(self, sig, frame):
+        eventlet.spawn(super().handle_quit, sig, frame)
+
+    def handle_usr1(self, sig, frame):
+        eventlet.spawn(super().handle_usr1, sig, frame)
+
+    def timeout_ctx(self):
+        return eventlet.Timeout(self.cfg.keepalive or None, False)
+
+    def handle(self, listener, client, addr):
+        if self.cfg.is_ssl:
+            client = ssl_wrap_socket(client, self.cfg)
+        super().handle(listener, client, addr)
+
+    def run(self):
+        acceptors = []
+        for sock in self.sockets:
+            gsock = GreenSocket(sock)
+            gsock.setblocking(1)
+            hfun = partial(self.handle, gsock)
+            acceptor = eventlet.spawn(_eventlet_serve, gsock, hfun,
+                                      self.worker_connections)
+
+            acceptors.append(acceptor)
+            eventlet.sleep(0.0)
+
+        while self.alive:
+            self.notify()
+            eventlet.sleep(1.0)
+
+        self.notify()
+        t = None
+        try:
+            with eventlet.Timeout(self.cfg.graceful_timeout) as t:
+                for a in acceptors:
+                    a.kill(eventlet.StopServe())
+                for a in acceptors:
+                    a.wait()
+        except eventlet.Timeout as te:
+            if te != t:
+                raise
+            for a in acceptors:
+                a.kill()

env/Lib/site-packages/gunicorn/workers/ggevent.py

@@ -0,0 +1,193 @@
+#
+# This file is part of gunicorn released under the MIT license.
+# See the NOTICE for more information.
+
+import os
+import sys
+from datetime import datetime
+from functools import partial
+import time
+
+try:
+    import gevent
+except ImportError:
+    raise RuntimeError("gevent worker requires gevent 1.4 or higher")
+else:
+    from packaging.version import parse as parse_version
+    if parse_version(gevent.__version__) < parse_version('1.4'):
+        raise RuntimeError("gevent worker requires gevent 1.4 or higher")
+
+from gevent.pool import Pool
+from gevent.server import StreamServer
+from gevent import hub, monkey, socket, pywsgi
+
+import gunicorn
+from gunicorn.http.wsgi import base_environ
+from gunicorn.sock import ssl_context
+from gunicorn.workers.base_async import AsyncWorker
+
+VERSION = "gevent/%s gunicorn/%s" % (gevent.__version__, gunicorn.__version__)
+
+
+class GeventWorker(AsyncWorker):
+
+    server_class = None
+    wsgi_handler = None
+
+    def patch(self):
+        monkey.patch_all()
+
+        # patch sockets
+        sockets = []
+        for s in self.sockets:
+            sockets.append(socket.socket(s.FAMILY, socket.SOCK_STREAM,
+                                         fileno=s.sock.fileno()))
+        self.sockets = sockets
+
+    def notify(self):
+        super().notify()
+        if self.ppid != os.getppid():
+            self.log.info("Parent changed, shutting down: %s", self)
+            sys.exit(0)
+
+    def timeout_ctx(self):
+        return gevent.Timeout(self.cfg.keepalive, False)
+
+    def run(self):
+        servers = []
+        ssl_args = {}
+
+        if self.cfg.is_ssl:
+            ssl_args = {"ssl_context": ssl_context(self.cfg)}
+
+        for s in self.sockets:
+            s.setblocking(1)
+            pool = Pool(self.worker_connections)
+            if self.server_class is not None:
+                environ = base_environ(self.cfg)
+                environ.update({
+                    "wsgi.multithread": True,
+                    "SERVER_SOFTWARE": VERSION,
+                })
+                server = self.server_class(
+                    s, application=self.wsgi, spawn=pool, log=self.log,
+                    handler_class=self.wsgi_handler, environ=environ,
+                    **ssl_args)
+            else:
+                hfun = partial(self.handle, s)
+                server = StreamServer(s, handle=hfun, spawn=pool, **ssl_args)
+                if self.cfg.workers > 1:
+                    server.max_accept = 1
+
+            server.start()
+            servers.append(server)
+
+        while self.alive:
+            self.notify()
+            gevent.sleep(1.0)
+
+        try:
+            # Stop accepting requests
+            for server in servers:
+                if hasattr(server, 'close'):  # gevent 1.0
+                    server.close()
+                if hasattr(server, 'kill'):  # gevent < 1.0
+                    server.kill()
+
+            # Handle current requests until graceful_timeout
+            ts = time.time()
+            while time.time() - ts <= self.cfg.graceful_timeout:
+                accepting = 0
+                for server in servers:
+                    if server.pool.free_count() != server.pool.size:
+                        accepting += 1
+
+                # if no server is accepting a connection, we can exit
+                if not accepting:
+                    return
+
+                self.notify()
+                gevent.sleep(1.0)
+
+            # Force kill all active the handlers
+            self.log.warning("Worker graceful timeout (pid:%s)", self.pid)
+            for server in servers:
+                server.stop(timeout=1)
+        except Exception:
+            pass
+
+    def handle(self, listener, client, addr):
+        # Connected socket timeout defaults to socket.getdefaulttimeout().
+        # This forces to blocking mode.
+        client.setblocking(1)
+        super().handle(listener, client, addr)
+
+    def handle_request(self, listener_name, req, sock, addr):
+        try:
+            super().handle_request(listener_name, req, sock, addr)
+        except gevent.GreenletExit:
+            pass
+        except SystemExit:
+            pass
+
+    def handle_quit(self, sig, frame):
+        # Move this out of the signal handler so we can use
+        # blocking calls. See #1126
+        gevent.spawn(super().handle_quit, sig, frame)
+
+    def handle_usr1(self, sig, frame):
+        # Make the gevent workers handle the usr1 signal
+        # by deferring to a new greenlet. See #1645
+        gevent.spawn(super().handle_usr1, sig, frame)
+
+    def init_process(self):
+        self.patch()
+        hub.reinit()
+        super().init_process()
+
+
+class GeventResponse:
+
+    status = None
+    headers = None
+    sent = None
+
+    def __init__(self, status, headers, clength):
+        self.status = status
+        self.headers = headers
+        self.sent = clength
+
+
+class PyWSGIHandler(pywsgi.WSGIHandler):
+
+    def log_request(self):
+        start = datetime.fromtimestamp(self.time_start)
+        finish = datetime.fromtimestamp(self.time_finish)
+        response_time = finish - start
+        resp_headers = getattr(self, 'response_headers', {})
+
+        # Status is expected to be a string but is encoded to bytes in gevent for PY3
+        # Except when it isn't because gevent uses hardcoded strings for network errors.
+        status = self.status.decode() if isinstance(self.status, bytes) else self.status
+        resp = GeventResponse(status, resp_headers, self.response_length)
+        if hasattr(self, 'headers'):
+            req_headers = self.headers.items()
+        else:
+            req_headers = []
+        self.server.log.access(resp, req_headers, self.environ, response_time)
+
+    def get_environ(self):
+        env = super().get_environ()
+        env['gunicorn.sock'] = self.socket
+        env['RAW_URI'] = self.path
+        return env
+
+
+class PyWSGIServer(pywsgi.WSGIServer):
+    pass
+
+
+class GeventPyWSGIWorker(GeventWorker):
+    "The Gevent StreamServer based workers."
+    server_class = PyWSGIServer
+    wsgi_handler = PyWSGIHandler

env/Lib/site-packages/gunicorn/workers/gthread.py

@@ -0,0 +1,372 @@
+#
+# This file is part of gunicorn released under the MIT license.
+# See the NOTICE for more information.
+
+# design:
+# A threaded worker accepts connections in the main loop, accepted
+# connections are added to the thread pool as a connection job.
+# Keepalive connections are put back in the loop waiting for an event.
+# If no event happen after the keep alive timeout, the connection is
+# closed.
+# pylint: disable=no-else-break
+
+from concurrent import futures
+import errno
+import os
+import selectors
+import socket
+import ssl
+import sys
+import time
+from collections import deque
+from datetime import datetime
+from functools import partial
+from threading import RLock
+
+from . import base
+from .. import http
+from .. import util
+from .. import sock
+from ..http import wsgi
+
+
+class TConn:
+
+    def __init__(self, cfg, sock, client, server):
+        self.cfg = cfg
+        self.sock = sock
+        self.client = client
+        self.server = server
+
+        self.timeout = None
+        self.parser = None
+        self.initialized = False
+
+        # set the socket to non blocking
+        self.sock.setblocking(False)
+
+    def init(self):
+        self.initialized = True
+        self.sock.setblocking(True)
+
+        if self.parser is None:
+            # wrap the socket if needed
+            if self.cfg.is_ssl:
+                self.sock = sock.ssl_wrap_socket(self.sock, self.cfg)
+
+            # initialize the parser
+            self.parser = http.RequestParser(self.cfg, self.sock, self.client)
+
+    def set_timeout(self):
+        # set the timeout
+        self.timeout = time.time() + self.cfg.keepalive
+
+    def close(self):
+        util.close(self.sock)
+
+
+class ThreadWorker(base.Worker):
+
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        self.worker_connections = self.cfg.worker_connections
+        self.max_keepalived = self.cfg.worker_connections - self.cfg.threads
+        # initialise the pool
+        self.tpool = None
+        self.poller = None
+        self._lock = None
+        self.futures = deque()
+        self._keep = deque()
+        self.nr_conns = 0
+
+    @classmethod
+    def check_config(cls, cfg, log):
+        max_keepalived = cfg.worker_connections - cfg.threads
+
+        if max_keepalived <= 0 and cfg.keepalive:
+            log.warning("No keepalived connections can be handled. " +
+                        "Check the number of worker connections and threads.")
+
+    def init_process(self):
+        self.tpool = self.get_thread_pool()
+        self.poller = selectors.DefaultSelector()
+        self._lock = RLock()
+        super().init_process()
+
+    def get_thread_pool(self):
+        """Override this method to customize how the thread pool is created"""
+        return futures.ThreadPoolExecutor(max_workers=self.cfg.threads)
+
+    def handle_quit(self, sig, frame):
+        self.alive = False
+        # worker_int callback
+        self.cfg.worker_int(self)
+        self.tpool.shutdown(False)
+        time.sleep(0.1)
+        sys.exit(0)
+
+    def _wrap_future(self, fs, conn):
+        fs.conn = conn
+        self.futures.append(fs)
+        fs.add_done_callback(self.finish_request)
+
+    def enqueue_req(self, conn):
+        conn.init()
+        # submit the connection to a worker
+        fs = self.tpool.submit(self.handle, conn)
+        self._wrap_future(fs, conn)
+
+    def accept(self, server, listener):
+        try:
+            sock, client = listener.accept()
+            # initialize the connection object
+            conn = TConn(self.cfg, sock, client, server)
+
+            self.nr_conns += 1
+            # wait until socket is readable
+            with self._lock:
+                self.poller.register(conn.sock, selectors.EVENT_READ,
+                                     partial(self.on_client_socket_readable, conn))
+        except OSError as e:
+            if e.errno not in (errno.EAGAIN, errno.ECONNABORTED,
+                               errno.EWOULDBLOCK):
+                raise
+
+    def on_client_socket_readable(self, conn, client):
+        with self._lock:
+            # unregister the client from the poller
+            self.poller.unregister(client)
+
+            if conn.initialized:
+                # remove the connection from keepalive
+                try:
+                    self._keep.remove(conn)
+                except ValueError:
+                    # race condition
+                    return
+
+        # submit the connection to a worker
+        self.enqueue_req(conn)
+
+    def murder_keepalived(self):
+        now = time.time()
+        while True:
+            with self._lock:
+                try:
+                    # remove the connection from the queue
+                    conn = self._keep.popleft()
+                except IndexError:
+                    break
+
+            delta = conn.timeout - now
+            if delta > 0:
+                # add the connection back to the queue
+                with self._lock:
+                    self._keep.appendleft(conn)
+                break
+            else:
+                self.nr_conns -= 1
+                # remove the socket from the poller
+                with self._lock:
+                    try:
+                        self.poller.unregister(conn.sock)
+                    except OSError as e:
+                        if e.errno != errno.EBADF:
+                            raise
+                    except KeyError:
+                        # already removed by the system, continue
+                        pass
+                    except ValueError:
+                        # already removed by the system continue
+                        pass
+
+                # close the socket
+                conn.close()
+
+    def is_parent_alive(self):
+        # If our parent changed then we shut down.
+        if self.ppid != os.getppid():
+            self.log.info("Parent changed, shutting down: %s", self)
+            return False
+        return True
+
+    def run(self):
+        # init listeners, add them to the event loop
+        for sock in self.sockets:
+            sock.setblocking(False)
+            # a race condition during graceful shutdown may make the listener
+            # name unavailable in the request handler so capture it once here
+            server = sock.getsockname()
+            acceptor = partial(self.accept, server)
+            self.poller.register(sock, selectors.EVENT_READ, acceptor)
+
+        while self.alive:
+            # notify the arbiter we are alive
+            self.notify()
+
+            # can we accept more connections?
+            if self.nr_conns < self.worker_connections:
+                # wait for an event
+                events = self.poller.select(1.0)
+                for key, _ in events:
+                    callback = key.data
+                    callback(key.fileobj)
+
+                # check (but do not wait) for finished requests
+                result = futures.wait(self.futures, timeout=0,
+                                      return_when=futures.FIRST_COMPLETED)
+            else:
+                # wait for a request to finish
+                result = futures.wait(self.futures, timeout=1.0,
+                                      return_when=futures.FIRST_COMPLETED)
+
+            # clean up finished requests
+            for fut in result.done:
+                self.futures.remove(fut)
+
+            if not self.is_parent_alive():
+                break
+
+            # handle keepalive timeouts
+            self.murder_keepalived()
+
+        self.tpool.shutdown(False)
+        self.poller.close()
+
+        for s in self.sockets:
+            s.close()
+
+        futures.wait(self.futures, timeout=self.cfg.graceful_timeout)
+
+    def finish_request(self, fs):
+        if fs.cancelled():
+            self.nr_conns -= 1
+            fs.conn.close()
+            return
+
+        try:
+            (keepalive, conn) = fs.result()
+            # if the connection should be kept alived add it
+            # to the eventloop and record it
+            if keepalive and self.alive:
+                # flag the socket as non blocked
+                conn.sock.setblocking(False)
+
+                # register the connection
+                conn.set_timeout()
+                with self._lock:
+                    self._keep.append(conn)
+
+                    # add the socket to the event loop
+                    self.poller.register(conn.sock, selectors.EVENT_READ,
+                                         partial(self.on_client_socket_readable, conn))
+            else:
+                self.nr_conns -= 1
+                conn.close()
+        except Exception:
+            # an exception happened, make sure to close the
+            # socket.
+            self.nr_conns -= 1
+            fs.conn.close()
+
+    def handle(self, conn):
+        keepalive = False
+        req = None
+        try:
+            req = next(conn.parser)
+            if not req:
+                return (False, conn)
+
+            # handle the request
+            keepalive = self.handle_request(req, conn)
+            if keepalive:
+                return (keepalive, conn)
+        except http.errors.NoMoreData as e:
+            self.log.debug("Ignored premature client disconnection. %s", e)
+
+        except StopIteration as e:
+            self.log.debug("Closing connection. %s", e)
+        except ssl.SSLError as e:
+            if e.args[0] == ssl.SSL_ERROR_EOF:
+                self.log.debug("ssl connection closed")
+                conn.sock.close()
+            else:
+                self.log.debug("Error processing SSL request.")
+                self.handle_error(req, conn.sock, conn.client, e)
+
+        except OSError as e:
+            if e.errno not in (errno.EPIPE, errno.ECONNRESET, errno.ENOTCONN):
+                self.log.exception("Socket error processing request.")
+            else:
+                if e.errno == errno.ECONNRESET:
+                    self.log.debug("Ignoring connection reset")
+                elif e.errno == errno.ENOTCONN:
+                    self.log.debug("Ignoring socket not connected")
+                else:
+                    self.log.debug("Ignoring connection epipe")
+        except Exception as e:
+            self.handle_error(req, conn.sock, conn.client, e)
+
+        return (False, conn)
+
+    def handle_request(self, req, conn):
+        environ = {}
+        resp = None
+        try:
+            self.cfg.pre_request(self, req)
+            request_start = datetime.now()
+            resp, environ = wsgi.create(req, conn.sock, conn.client,
+                                        conn.server, self.cfg)
+            environ["wsgi.multithread"] = True
+            self.nr += 1
+            if self.nr >= self.max_requests:
+                if self.alive:
+                    self.log.info("Autorestarting worker after current request.")
+                    self.alive = False
+                resp.force_close()
+
+            if not self.alive or not self.cfg.keepalive:
+                resp.force_close()
+            elif len(self._keep) >= self.max_keepalived:
+                resp.force_close()
+
+            respiter = self.wsgi(environ, resp.start_response)
+            try:
+                if isinstance(respiter, environ['wsgi.file_wrapper']):
+                    resp.write_file(respiter)
+                else:
+                    for item in respiter:
+                        resp.write(item)
+
+                resp.close()
+            finally:
+                request_time = datetime.now() - request_start
+                self.log.access(resp, req, environ, request_time)
+                if hasattr(respiter, "close"):
+                    respiter.close()
+
+            if resp.should_close():
+                self.log.debug("Closing connection.")
+                return False
+        except OSError:
+            # pass to next try-except level
+            util.reraise(*sys.exc_info())
+        except Exception:
+            if resp and resp.headers_sent:
+                # If the requests have already been sent, we should close the
+                # connection to indicate the error.
+                self.log.exception("Error handling request")
+                try:
+                    conn.sock.shutdown(socket.SHUT_RDWR)
+                    conn.sock.close()
+                except OSError:
+                    pass
+                raise StopIteration()
+            raise
+        finally:
+            try:
+                self.cfg.post_request(self, req, environ, resp)
+            except Exception:
+                self.log.exception("Exception in post_request hook")
+
+        return True

env/Lib/site-packages/gunicorn/workers/gtornado.py

@@ -0,0 +1,166 @@
+#
+# This file is part of gunicorn released under the MIT license.
+# See the NOTICE for more information.
+
+import os
+import sys
+
+try:
+    import tornado
+except ImportError:
+    raise RuntimeError("You need tornado installed to use this worker.")
+import tornado.web
+import tornado.httpserver
+from tornado.ioloop import IOLoop, PeriodicCallback
+from tornado.wsgi import WSGIContainer
+from gunicorn.workers.base import Worker
+from gunicorn import __version__ as gversion
+from gunicorn.sock import ssl_context
+
+
+# Tornado 5.0 updated its IOLoop, and the `io_loop` arguments to many
+# Tornado functions have been removed in Tornado 5.0. Also, they no
+# longer store PeriodCallbacks in ioloop._callbacks. Instead we store
+# them on our side, and use stop() on them when stopping the worker.
+# See https://www.tornadoweb.org/en/stable/releases/v5.0.0.html#backwards-compatibility-notes
+# for more details.
+TORNADO5 = tornado.version_info >= (5, 0, 0)
+
+
+class TornadoWorker(Worker):
+
+    @classmethod
+    def setup(cls):
+        web = sys.modules.pop("tornado.web")
+        old_clear = web.RequestHandler.clear
+
+        def clear(self):
+            old_clear(self)
+            if "Gunicorn" not in self._headers["Server"]:
+                self._headers["Server"] += " (Gunicorn/%s)" % gversion
+        web.RequestHandler.clear = clear
+        sys.modules["tornado.web"] = web
+
+    def handle_exit(self, sig, frame):
+        if self.alive:
+            super().handle_exit(sig, frame)
+
+    def handle_request(self):
+        self.nr += 1
+        if self.alive and self.nr >= self.max_requests:
+            self.log.info("Autorestarting worker after current request.")
+            self.alive = False
+
+    def watchdog(self):
+        if self.alive:
+            self.notify()
+
+        if self.ppid != os.getppid():
+            self.log.info("Parent changed, shutting down: %s", self)
+            self.alive = False
+
+    def heartbeat(self):
+        if not self.alive:
+            if self.server_alive:
+                if hasattr(self, 'server'):
+                    try:
+                        self.server.stop()
+                    except Exception:
+                        pass
+                self.server_alive = False
+            else:
+                if TORNADO5:
+                    for callback in self.callbacks:
+                        callback.stop()
+                    self.ioloop.stop()
+                else:
+                    if not self.ioloop._callbacks:
+                        self.ioloop.stop()
+
+    def init_process(self):
+        # IOLoop cannot survive a fork or be shared across processes
+        # in any way. When multiple processes are being used, each process
+        # should create its own IOLoop. We should clear current IOLoop
+        # if exists before os.fork.
+        IOLoop.clear_current()
+        super().init_process()
+
+    def run(self):
+        self.ioloop = IOLoop.instance()
+        self.alive = True
+        self.server_alive = False
+
+        if TORNADO5:
+            self.callbacks = []
+            self.callbacks.append(PeriodicCallback(self.watchdog, 1000))
+            self.callbacks.append(PeriodicCallback(self.heartbeat, 1000))
+            for callback in self.callbacks:
+                callback.start()
+        else:
+            PeriodicCallback(self.watchdog, 1000, io_loop=self.ioloop).start()
+            PeriodicCallback(self.heartbeat, 1000, io_loop=self.ioloop).start()
+
+        # Assume the app is a WSGI callable if its not an
+        # instance of tornado.web.Application or is an
+        # instance of tornado.wsgi.WSGIApplication
+        app = self.wsgi
+
+        if tornado.version_info[0] < 6:
+            if not isinstance(app, tornado.web.Application) or \
+                    isinstance(app, tornado.wsgi.WSGIApplication):
+                app = WSGIContainer(app)
+        elif not isinstance(app, WSGIContainer) and \
+                not isinstance(app, tornado.web.Application):
+            app = WSGIContainer(app)
+
+        # Monkey-patching HTTPConnection.finish to count the
+        # number of requests being handled by Tornado. This
+        # will help gunicorn shutdown the worker if max_requests
+        # is exceeded.
+        httpserver = sys.modules["tornado.httpserver"]
+        if hasattr(httpserver, 'HTTPConnection'):
+            old_connection_finish = httpserver.HTTPConnection.finish
+
+            def finish(other):
+                self.handle_request()
+                old_connection_finish(other)
+            httpserver.HTTPConnection.finish = finish
+            sys.modules["tornado.httpserver"] = httpserver
+
+            server_class = tornado.httpserver.HTTPServer
+        else:
+
+            class _HTTPServer(tornado.httpserver.HTTPServer):
+
+                def on_close(instance, server_conn):
+                    self.handle_request()
+                    super().on_close(server_conn)
+
+            server_class = _HTTPServer
+
+        if self.cfg.is_ssl:
+            if TORNADO5:
+                server = server_class(app, ssl_options=ssl_context(self.cfg))
+            else:
+                server = server_class(app, io_loop=self.ioloop,
+                                      ssl_options=ssl_context(self.cfg))
+        else:
+            if TORNADO5:
+                server = server_class(app)
+            else:
+                server = server_class(app, io_loop=self.ioloop)
+
+        self.server = server
+        self.server_alive = True
+
+        for s in self.sockets:
+            s.setblocking(0)
+            if hasattr(server, "add_socket"):  # tornado > 2.0
+                server.add_socket(s)
+            elif hasattr(server, "_sockets"):  # tornado 2.0
+                server._sockets[s.fileno()] = s
+
+        server.no_keep_alive = self.cfg.keepalive <= 0
+        server.start(num_processes=1)
+
+        self.ioloop.start()

env/Lib/site-packages/gunicorn/workers/sync.py

@@ -0,0 +1,209 @@
+#
+# This file is part of gunicorn released under the MIT license.
+# See the NOTICE for more information.
+#
+
+from datetime import datetime
+import errno
+import os
+import select
+import socket
+import ssl
+import sys
+
+from gunicorn import http
+from gunicorn.http import wsgi
+from gunicorn import sock
+from gunicorn import util
+from gunicorn.workers import base
+
+
+class StopWaiting(Exception):
+    """ exception raised to stop waiting for a connection """
+
+
+class SyncWorker(base.Worker):
+
+    def accept(self, listener):
+        client, addr = listener.accept()
+        client.setblocking(1)
+        util.close_on_exec(client)
+        self.handle(listener, client, addr)
+
+    def wait(self, timeout):
+        try:
+            self.notify()
+            ret = select.select(self.wait_fds, [], [], timeout)
+            if ret[0]:
+                if self.PIPE[0] in ret[0]:
+                    os.read(self.PIPE[0], 1)
+                return ret[0]
+
+        except OSError as e:
+            if e.args[0] == errno.EINTR:
+                return self.sockets
+            if e.args[0] == errno.EBADF:
+                if self.nr < 0:
+                    return self.sockets
+                else:
+                    raise StopWaiting
+            raise
+
+    def is_parent_alive(self):
+        # If our parent changed then we shut down.
+        if self.ppid != os.getppid():
+            self.log.info("Parent changed, shutting down: %s", self)
+            return False
+        return True
+
+    def run_for_one(self, timeout):
+        listener = self.sockets[0]
+        while self.alive:
+            self.notify()
+
+            # Accept a connection. If we get an error telling us
+            # that no connection is waiting we fall down to the
+            # select which is where we'll wait for a bit for new
+            # workers to come give us some love.
+            try:
+                self.accept(listener)
+                # Keep processing clients until no one is waiting. This
+                # prevents the need to select() for every client that we
+                # process.
+                continue
+
+            except OSError as e:
+                if e.errno not in (errno.EAGAIN, errno.ECONNABORTED,
+                                   errno.EWOULDBLOCK):
+                    raise
+
+            if not self.is_parent_alive():
+                return
+
+            try:
+                self.wait(timeout)
+            except StopWaiting:
+                return
+
+    def run_for_multiple(self, timeout):
+        while self.alive:
+            self.notify()
+
+            try:
+                ready = self.wait(timeout)
+            except StopWaiting:
+                return
+
+            if ready is not None:
+                for listener in ready:
+                    if listener == self.PIPE[0]:
+                        continue
+
+                    try:
+                        self.accept(listener)
+                    except OSError as e:
+                        if e.errno not in (errno.EAGAIN, errno.ECONNABORTED,
+                                           errno.EWOULDBLOCK):
+                            raise
+
+            if not self.is_parent_alive():
+                return
+
+    def run(self):
+        # if no timeout is given the worker will never wait and will
+        # use the CPU for nothing. This minimal timeout prevent it.
+        timeout = self.timeout or 0.5
+
+        # self.socket appears to lose its blocking status after
+        # we fork in the arbiter. Reset it here.
+        for s in self.sockets:
+            s.setblocking(0)
+
+        if len(self.sockets) > 1:
+            self.run_for_multiple(timeout)
+        else:
+            self.run_for_one(timeout)
+
+    def handle(self, listener, client, addr):
+        req = None
+        try:
+            if self.cfg.is_ssl:
+                client = sock.ssl_wrap_socket(client, self.cfg)
+            parser = http.RequestParser(self.cfg, client, addr)
+            req = next(parser)
+            self.handle_request(listener, req, client, addr)
+        except http.errors.NoMoreData as e:
+            self.log.debug("Ignored premature client disconnection. %s", e)
+        except StopIteration as e:
+            self.log.debug("Closing connection. %s", e)
+        except ssl.SSLError as e:
+            if e.args[0] == ssl.SSL_ERROR_EOF:
+                self.log.debug("ssl connection closed")
+                client.close()
+            else:
+                self.log.debug("Error processing SSL request.")
+                self.handle_error(req, client, addr, e)
+        except OSError as e:
+            if e.errno not in (errno.EPIPE, errno.ECONNRESET, errno.ENOTCONN):
+                self.log.exception("Socket error processing request.")
+            else:
+                if e.errno == errno.ECONNRESET:
+                    self.log.debug("Ignoring connection reset")
+                elif e.errno == errno.ENOTCONN:
+                    self.log.debug("Ignoring socket not connected")
+                else:
+                    self.log.debug("Ignoring EPIPE")
+        except BaseException as e:
+            self.handle_error(req, client, addr, e)
+        finally:
+            util.close(client)
+
+    def handle_request(self, listener, req, client, addr):
+        environ = {}
+        resp = None
+        try:
+            self.cfg.pre_request(self, req)
+            request_start = datetime.now()
+            resp, environ = wsgi.create(req, client, addr,
+                                        listener.getsockname(), self.cfg)
+            # Force the connection closed until someone shows
+            # a buffering proxy that supports Keep-Alive to
+            # the backend.
+            resp.force_close()
+            self.nr += 1
+            if self.nr >= self.max_requests:
+                self.log.info("Autorestarting worker after current request.")
+                self.alive = False
+            respiter = self.wsgi(environ, resp.start_response)
+            try:
+                if isinstance(respiter, environ['wsgi.file_wrapper']):
+                    resp.write_file(respiter)
+                else:
+                    for item in respiter:
+                        resp.write(item)
+                resp.close()
+            finally:
+                request_time = datetime.now() - request_start
+                self.log.access(resp, req, environ, request_time)
+                if hasattr(respiter, "close"):
+                    respiter.close()
+        except OSError:
+            # pass to next try-except level
+            util.reraise(*sys.exc_info())
+        except Exception:
+            if resp and resp.headers_sent:
+                # If the requests have already been sent, we should close the
+                # connection to indicate the error.
+                self.log.exception("Error handling request")
+                try:
+                    client.shutdown(socket.SHUT_RDWR)
+                    client.close()
+                except OSError:
+                    pass
+                raise StopIteration()
+            raise
+        finally:
+            try:
+                self.cfg.post_request(self, req, environ, resp)
+            except Exception:
+                self.log.exception("Exception in post_request hook")

env/Lib/site-packages/gunicorn/workers/workertmp.py

@@ -0,0 +1,53 @@
+#
+# This file is part of gunicorn released under the MIT license.
+# See the NOTICE for more information.
+
+import os
+import time
+import platform
+import tempfile
+
+from gunicorn import util
+
+PLATFORM = platform.system()
+IS_CYGWIN = PLATFORM.startswith('CYGWIN')
+
+
+class WorkerTmp:
+
+    def __init__(self, cfg):
+        old_umask = os.umask(cfg.umask)
+        fdir = cfg.worker_tmp_dir
+        if fdir and not os.path.isdir(fdir):
+            raise RuntimeError("%s doesn't exist. Can't create workertmp." % fdir)
+        fd, name = tempfile.mkstemp(prefix="wgunicorn-", dir=fdir)
+        os.umask(old_umask)
+
+        # change the owner and group of the file if the worker will run as
+        # a different user or group, so that the worker can modify the file
+        if cfg.uid != os.geteuid() or cfg.gid != os.getegid():
+            util.chown(name, cfg.uid, cfg.gid)
+
+        # unlink the file so we don't leak temporary files
+        try:
+            if not IS_CYGWIN:
+                util.unlink(name)
+            # In Python 3.8, open() emits RuntimeWarning if buffering=1 for binary mode.
+            # Because we never write to this file, pass 0 to switch buffering off.
+            self._tmp = os.fdopen(fd, 'w+b', 0)
+        except Exception:
+            os.close(fd)
+            raise
+
+    def notify(self):
+        new_time = time.monotonic()
+        os.utime(self._tmp.fileno(), (new_time, new_time))
+
+    def last_update(self):
+        return os.fstat(self._tmp.fileno()).st_mtime
+
+    def fileno(self):
+        return self._tmp.fileno()
+
+    def close(self):
+        return self._tmp.close()