diff -Naur py3k/Modules/_multiprocessing//socket_connection.c py3k_new/Modules/_multiprocessing//socket_connection.c
--- py3k/Modules/_multiprocessing//socket_connection.c	2010-05-09 17:52:27.000000000 +0200
+++ py3k_new/Modules/_multiprocessing//socket_connection.c	2010-11-25 12:11:34.412378003 +0100
@@ -6,6 +6,9 @@
  * Copyright (c) 2006-2008, R Oudkerk --- see COPYING.txt
  */
 
+#ifndef MS_WINDOWS
+#include <poll.h>
+#endif
 #include "multiprocessing.h"
 
 #ifdef MS_WINDOWS
@@ -148,6 +151,7 @@
     }
 }
 
+#ifdef MS_WINDOWS
 /*
  * Check whether any data is available for reading -- neg timeout blocks
  */
@@ -191,6 +195,33 @@
         return FALSE;
     }
 }
+#else
+/*
+ * Check whether any data is available for reading -- neg timeout blocks
+ */
+
+static int
+conn_poll(ConnectionObject *conn, double timeout, PyThreadState *_save)
+{
+    int res;
+    struct pollfd p;
+
+    p.fd = (int)conn->handle;
+    p.events = POLLIN | POLLPRI;
+    p.revents = 0;
+
+    res = poll(&p, 1, (int)timeout * 1000);
+
+    if (res < 0) {
+        return MP_SOCKET_ERROR;
+    } else if (p.revents & (POLLIN | POLLPRI)) {
+        return TRUE;
+    } else {
+        assert(res == 0);
+        return FALSE;
+    }
+}
+#endif
 
 /*
  * "connection.h" defines the Connection type using defs above