add ydb deps

7 files changed, 2393 insertions, 0 deletions

diff --git a/contrib/tools/python/src/Modules/_multiprocessing/connection.h b/contrib/tools/python/src/Modules/_multiprocessing/connection.h
new file mode 100644
index 0000000000..12e6eee44c
--- /dev/null
+++ b/contrib/tools/python/src/Modules/_multiprocessing/connection.h
@@ -0,0 +1,519 @@
+/*
+ * Definition of a `Connection` type.
+ * Used by `socket_connection.c` and `pipe_connection.c`.
+ *
+ * connection.h
+ *
+ * Copyright (c) 2006-2008, R Oudkerk --- see COPYING.txt
+ */
+
+#ifndef CONNECTION_H
+#define CONNECTION_H
+
+/*
+ * Read/write flags
+ */
+
+#define READABLE 1
+#define WRITABLE 2
+
+#define CHECK_READABLE(self) \
+    if (!(self->flags & READABLE)) { \
+        PyErr_SetString(PyExc_IOError, "connection is write-only"); \
+        return NULL; \
+    }
+
+#define CHECK_WRITABLE(self) \
+    if (!(self->flags & WRITABLE)) { \
+        PyErr_SetString(PyExc_IOError, "connection is read-only"); \
+        return NULL; \
+    }
+
+/*
+ * Allocation and deallocation
+ */
+
+static PyObject *
+connection_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
+{
+    ConnectionObject *self;
+    HANDLE handle;
+    BOOL readable = TRUE, writable = TRUE;
+
+    static char *kwlist[] = {"handle", "readable", "writable", NULL};
+
+    if (!PyArg_ParseTupleAndKeywords(args, kwds, F_HANDLE "|ii", kwlist,
+                                     &handle, &readable, &writable))
+        return NULL;
+
+    if (handle == INVALID_HANDLE_VALUE || (Py_ssize_t)handle < 0) {
+        PyErr_Format(PyExc_IOError, "invalid handle %zd",
+                     (Py_ssize_t)handle);
+        return NULL;
+    }
+
+    if (!readable && !writable) {
+        PyErr_SetString(PyExc_ValueError,
+                        "either readable or writable must be true");
+        return NULL;
+    }
+
+    self = PyObject_New(ConnectionObject, type);
+    if (self == NULL)
+        return NULL;
+
+    self->weakreflist = NULL;
+    self->handle = handle;
+    self->flags = 0;
+
+    if (readable)
+        self->flags |= READABLE;
+    if (writable)
+        self->flags |= WRITABLE;
+    assert(self->flags >= 1 && self->flags <= 3);
+
+    return (PyObject*)self;
+}
+
+static void
+connection_dealloc(ConnectionObject* self)
+{
+    if (self->weakreflist != NULL)
+        PyObject_ClearWeakRefs((PyObject*)self);
+
+    if (self->handle != INVALID_HANDLE_VALUE) {
+        Py_BEGIN_ALLOW_THREADS
+        CLOSE(self->handle);
+        Py_END_ALLOW_THREADS
+    }
+    PyObject_Del(self);
+}
+
+/*
+ * Functions for transferring buffers
+ */
+
+static PyObject *
+connection_sendbytes(ConnectionObject *self, PyObject *args)
+{
+    char *buffer;
+    Py_ssize_t length, offset=0, size=PY_SSIZE_T_MIN;
+    int res;
+
+    if (!PyArg_ParseTuple(args, F_RBUFFER "#|" F_PY_SSIZE_T F_PY_SSIZE_T,
+                          &buffer, &length, &offset, &size))
+        return NULL;
+
+    CHECK_WRITABLE(self);
+
+    if (offset < 0) {
+        PyErr_SetString(PyExc_ValueError, "offset is negative");
+        return NULL;
+    }
+    if (length < offset) {
+        PyErr_SetString(PyExc_ValueError, "buffer length < offset");
+        return NULL;
+    }
+
+    if (size == PY_SSIZE_T_MIN) {
+        size = length - offset;
+    } else {
+        if (size < 0) {
+            PyErr_SetString(PyExc_ValueError, "size is negative");
+            return NULL;
+        }
+        if (offset + size > length) {
+            PyErr_SetString(PyExc_ValueError,
+                            "buffer length < offset + size");
+            return NULL;
+        }
+    }
+
+    res = conn_send_string(self, buffer + offset, size);
+
+    if (res < 0) {
+        if (PyErr_Occurred())
+            return NULL;
+        else
+            return mp_SetError(PyExc_IOError, res);
+    }
+
+    Py_RETURN_NONE;
+}
+
+static PyObject *
+connection_recvbytes(ConnectionObject *self, PyObject *args)
+{
+    char *freeme = NULL;
+    Py_ssize_t res, maxlength = PY_SSIZE_T_MAX;
+    PyObject *result = NULL;
+
+    if (!PyArg_ParseTuple(args, "|" F_PY_SSIZE_T, &maxlength))
+        return NULL;
+
+    CHECK_READABLE(self);
+
+    if (maxlength < 0) {
+        PyErr_SetString(PyExc_ValueError, "maxlength < 0");
+        return NULL;
+    }
+
+    res = conn_recv_string(self, self->buffer, CONNECTION_BUFFER_SIZE,
+                           &freeme, maxlength);
+
+    if (res < 0) {
+        if (res == MP_BAD_MESSAGE_LENGTH) {
+            if ((self->flags & WRITABLE) == 0) {
+                Py_BEGIN_ALLOW_THREADS
+                CLOSE(self->handle);
+                Py_END_ALLOW_THREADS
+                self->handle = INVALID_HANDLE_VALUE;
+            } else {
+                self->flags = WRITABLE;
+            }
+        }
+        mp_SetError(PyExc_IOError, res);
+    } else {
+        if (freeme == NULL) {
+            result = PyString_FromStringAndSize(self->buffer, res);
+        } else {
+            result = PyString_FromStringAndSize(freeme, res);
+            PyMem_Free(freeme);
+        }
+    }
+
+    return result;
+}
+
+static PyObject *
+connection_recvbytes_into(ConnectionObject *self, PyObject *args)
+{
+    char *freeme = NULL, *buffer = NULL;
+    Py_ssize_t res, length, offset = 0;
+    PyObject *result = NULL;
+    Py_buffer pbuf;
+
+    CHECK_READABLE(self);
+
+    if (!PyArg_ParseTuple(args, "w*|" F_PY_SSIZE_T,
+                          &pbuf, &offset))
+        return NULL;
+
+    buffer = pbuf.buf;
+    length = pbuf.len;
+
+    if (offset < 0) {
+        PyErr_SetString(PyExc_ValueError, "negative offset");
+        goto _error;
+    }
+
+    if (offset > length) {
+        PyErr_SetString(PyExc_ValueError, "offset too large");
+        goto _error;
+    }
+
+    res = conn_recv_string(self, buffer+offset, length-offset,
+                           &freeme, PY_SSIZE_T_MAX);
+
+    if (res < 0) {
+        if (res == MP_BAD_MESSAGE_LENGTH) {
+            if ((self->flags & WRITABLE) == 0) {
+                Py_BEGIN_ALLOW_THREADS
+                CLOSE(self->handle);
+                Py_END_ALLOW_THREADS
+                self->handle = INVALID_HANDLE_VALUE;
+            } else {
+                self->flags = WRITABLE;
+            }
+        }
+        mp_SetError(PyExc_IOError, res);
+    } else {
+        if (freeme == NULL) {
+            result = PyInt_FromSsize_t(res);
+        } else {
+            result = PyObject_CallFunction(BufferTooShort,
+                                           F_RBUFFER "#",
+                                           freeme, res);
+            PyMem_Free(freeme);
+            if (result) {
+                PyErr_SetObject(BufferTooShort, result);
+                Py_DECREF(result);
+            }
+            goto _error;
+        }
+    }
+
+_cleanup:
+    PyBuffer_Release(&pbuf);
+    return result;
+
+_error:
+    result = NULL;
+    goto _cleanup;
+}
+
+/*
+ * Functions for transferring objects
+ */
+
+static PyObject *
+connection_send_obj(ConnectionObject *self, PyObject *obj)
+{
+    char *buffer;
+    int res;
+    Py_ssize_t length;
+    PyObject *pickled_string = NULL;
+
+    CHECK_WRITABLE(self);
+
+    pickled_string = PyObject_CallFunctionObjArgs(pickle_dumps, obj,
+                                                  pickle_protocol, NULL);
+    if (!pickled_string)
+        goto failure;
+
+    if (PyString_AsStringAndSize(pickled_string, &buffer, &length) < 0)
+        goto failure;
+
+    res = conn_send_string(self, buffer, (int)length);
+
+    if (res < 0) {
+        mp_SetError(PyExc_IOError, res);
+        goto failure;
+    }
+
+    Py_XDECREF(pickled_string);
+    Py_RETURN_NONE;
+
+  failure:
+    Py_XDECREF(pickled_string);
+    return NULL;
+}
+
+static PyObject *
+connection_recv_obj(ConnectionObject *self)
+{
+    char *freeme = NULL;
+    Py_ssize_t res;
+    PyObject *temp = NULL, *result = NULL;
+
+    CHECK_READABLE(self);
+
+    res = conn_recv_string(self, self->buffer, CONNECTION_BUFFER_SIZE,
+                           &freeme, PY_SSIZE_T_MAX);
+
+    if (res < 0) {
+        if (res == MP_BAD_MESSAGE_LENGTH) {
+            if ((self->flags & WRITABLE) == 0) {
+                Py_BEGIN_ALLOW_THREADS
+                CLOSE(self->handle);
+                Py_END_ALLOW_THREADS
+                self->handle = INVALID_HANDLE_VALUE;
+            } else {
+                self->flags = WRITABLE;
+            }
+        }
+        mp_SetError(PyExc_IOError, res);
+    } else {
+        if (freeme == NULL) {
+            temp = PyString_FromStringAndSize(self->buffer, res);
+        } else {
+            temp = PyString_FromStringAndSize(freeme, res);
+            PyMem_Free(freeme);
+        }
+    }
+
+    if (temp)
+        result = PyObject_CallFunctionObjArgs(pickle_loads,
+                                              temp, NULL);
+    Py_XDECREF(temp);
+    return result;
+}
+
+/*
+ * Other functions
+ */
+
+static PyObject *
+connection_poll(ConnectionObject *self, PyObject *args)
+{
+    PyObject *timeout_obj = NULL;
+    double timeout = 0.0;
+    int res;
+
+    CHECK_READABLE(self);
+
+    if (!PyArg_ParseTuple(args, "|O", &timeout_obj))
+        return NULL;
+
+    if (timeout_obj == NULL) {
+        timeout = 0.0;
+    } else if (timeout_obj == Py_None) {
+        timeout = -1.0;                                 /* block forever */
+    } else {
+        timeout = PyFloat_AsDouble(timeout_obj);
+        if (PyErr_Occurred())
+            return NULL;
+        if (timeout < 0.0)
+            timeout = 0.0;
+    }
+
+    Py_BEGIN_ALLOW_THREADS
+    res = conn_poll(self, timeout, _save);
+    Py_END_ALLOW_THREADS
+
+    switch (res) {
+    case TRUE:
+        Py_RETURN_TRUE;
+    case FALSE:
+        Py_RETURN_FALSE;
+    default:
+        return mp_SetError(PyExc_IOError, res);
+    }
+}
+
+static PyObject *
+connection_fileno(ConnectionObject* self)
+{
+    if (self->handle == INVALID_HANDLE_VALUE) {
+        PyErr_SetString(PyExc_IOError, "handle is invalid");
+        return NULL;
+    }
+    return PyInt_FromLong((long)self->handle);
+}
+
+static PyObject *
+connection_close(ConnectionObject *self)
+{
+    if (self->handle != INVALID_HANDLE_VALUE) {
+        Py_BEGIN_ALLOW_THREADS
+        CLOSE(self->handle);
+        Py_END_ALLOW_THREADS
+        self->handle = INVALID_HANDLE_VALUE;
+    }
+
+    Py_RETURN_NONE;
+}
+
+static PyObject *
+connection_repr(ConnectionObject *self)
+{
+    static char *conn_type[] = {"read-only", "write-only", "read-write"};
+
+    assert(self->flags >= 1 && self->flags <= 3);
+    return FROM_FORMAT("<%s %s, handle %zd>",
+                       conn_type[self->flags - 1],
+                       CONNECTION_NAME, (Py_ssize_t)self->handle);
+}
+
+/*
+ * Getters and setters
+ */
+
+static PyObject *
+connection_closed(ConnectionObject *self, void *closure)
+{
+    return PyBool_FromLong((long)(self->handle == INVALID_HANDLE_VALUE));
+}
+
+static PyObject *
+connection_readable(ConnectionObject *self, void *closure)
+{
+    return PyBool_FromLong((long)(self->flags & READABLE));
+}
+
+static PyObject *
+connection_writable(ConnectionObject *self, void *closure)
+{
+    return PyBool_FromLong((long)(self->flags & WRITABLE));
+}
+
+/*
+ * Tables
+ */
+
+static PyMethodDef connection_methods[] = {
+    {"send_bytes", (PyCFunction)connection_sendbytes, METH_VARARGS,
+     "send the byte data from a readable buffer-like object"},
+    {"recv_bytes", (PyCFunction)connection_recvbytes, METH_VARARGS,
+     "receive byte data as a string"},
+    {"recv_bytes_into",(PyCFunction)connection_recvbytes_into,METH_VARARGS,
+     "receive byte data into a writeable buffer-like object\n"
+     "returns the number of bytes read"},
+
+    {"send", (PyCFunction)connection_send_obj, METH_O,
+     "send a (picklable) object"},
+    {"recv", (PyCFunction)connection_recv_obj, METH_NOARGS,
+     "receive a (picklable) object"},
+
+    {"poll", (PyCFunction)connection_poll, METH_VARARGS,
+     "whether there is any input available to be read"},
+    {"fileno", (PyCFunction)connection_fileno, METH_NOARGS,
+     "file descriptor or handle of the connection"},
+    {"close", (PyCFunction)connection_close, METH_NOARGS,
+     "close the connection"},
+
+    {NULL}  /* Sentinel */
+};
+
+static PyGetSetDef connection_getset[] = {
+    {"closed", (getter)connection_closed, NULL,
+     "True if the connection is closed", NULL},
+    {"readable", (getter)connection_readable, NULL,
+     "True if the connection is readable", NULL},
+    {"writable", (getter)connection_writable, NULL,
+     "True if the connection is writable", NULL},
+    {NULL}
+};
+
+/*
+ * Connection type
+ */
+
+PyDoc_STRVAR(connection_doc,
+             "Connection type whose constructor signature is\n\n"
+             "    Connection(handle, readable=True, writable=True).\n\n"
+             "The constructor does *not* duplicate the handle.");
+
+PyTypeObject CONNECTION_TYPE = {
+    PyVarObject_HEAD_INIT(NULL, 0)
+    /* tp_name           */ "_multiprocessing." CONNECTION_NAME,
+    /* tp_basicsize      */ sizeof(ConnectionObject),
+    /* tp_itemsize       */ 0,
+    /* tp_dealloc        */ (destructor)connection_dealloc,
+    /* tp_print          */ 0,
+    /* tp_getattr        */ 0,
+    /* tp_setattr        */ 0,
+    /* tp_compare        */ 0,
+    /* tp_repr           */ (reprfunc)connection_repr,
+    /* tp_as_number      */ 0,
+    /* tp_as_sequence    */ 0,
+    /* tp_as_mapping     */ 0,
+    /* tp_hash           */ 0,
+    /* tp_call           */ 0,
+    /* tp_str            */ 0,
+    /* tp_getattro       */ 0,
+    /* tp_setattro       */ 0,
+    /* tp_as_buffer      */ 0,
+    /* tp_flags          */ Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE |
+                            Py_TPFLAGS_HAVE_WEAKREFS,
+    /* tp_doc            */ connection_doc,
+    /* tp_traverse       */ 0,
+    /* tp_clear          */ 0,
+    /* tp_richcompare    */ 0,
+    /* tp_weaklistoffset */ offsetof(ConnectionObject, weakreflist),
+    /* tp_iter           */ 0,
+    /* tp_iternext       */ 0,
+    /* tp_methods        */ connection_methods,
+    /* tp_members        */ 0,
+    /* tp_getset         */ connection_getset,
+    /* tp_base           */ 0,
+    /* tp_dict           */ 0,
+    /* tp_descr_get      */ 0,
+    /* tp_descr_set      */ 0,
+    /* tp_dictoffset     */ 0,
+    /* tp_init           */ 0,
+    /* tp_alloc          */ 0,
+    /* tp_new            */ connection_new,
+};
+
+#endif /* CONNECTION_H */
diff --git a/contrib/tools/python/src/Modules/_multiprocessing/multiprocessing.c b/contrib/tools/python/src/Modules/_multiprocessing/multiprocessing.c
new file mode 100644
index 0000000000..d192a074ba
--- /dev/null
+++ b/contrib/tools/python/src/Modules/_multiprocessing/multiprocessing.c
@@ -0,0 +1,352 @@
+/*
+ * Extension module used by multiprocessing package
+ *
+ * multiprocessing.c
+ *
+ * Copyright (c) 2006-2008, R Oudkerk --- see COPYING.txt
+ */
+
+#include "multiprocessing.h"
+
+#if (defined(CMSG_LEN) && defined(SCM_RIGHTS))
+    #define HAVE_FD_TRANSFER 1
+#else
+    #define HAVE_FD_TRANSFER 0
+#endif
+
+PyObject *create_win32_namespace(void);
+
+PyObject *pickle_dumps, *pickle_loads, *pickle_protocol;
+PyObject *ProcessError, *BufferTooShort;
+
+/*
+ * Function which raises exceptions based on error codes
+ */
+
+PyObject *
+mp_SetError(PyObject *Type, int num)
+{
+    switch (num) {
+#ifdef MS_WINDOWS
+    case MP_STANDARD_ERROR:
+        if (Type == NULL)
+            Type = PyExc_WindowsError;
+        PyErr_SetExcFromWindowsErr(Type, 0);
+        break;
+    case MP_SOCKET_ERROR:
+        if (Type == NULL)
+            Type = PyExc_WindowsError;
+        PyErr_SetExcFromWindowsErr(Type, WSAGetLastError());
+        break;
+#else /* !MS_WINDOWS */
+    case MP_STANDARD_ERROR:
+    case MP_SOCKET_ERROR:
+        if (Type == NULL)
+            Type = PyExc_OSError;
+        PyErr_SetFromErrno(Type);
+        break;
+#endif /* !MS_WINDOWS */
+    case MP_MEMORY_ERROR:
+        PyErr_NoMemory();
+        break;
+    case MP_END_OF_FILE:
+        PyErr_SetNone(PyExc_EOFError);
+        break;
+    case MP_EARLY_END_OF_FILE:
+        PyErr_SetString(PyExc_IOError,
+                        "got end of file during message");
+        break;
+    case MP_BAD_MESSAGE_LENGTH:
+        PyErr_SetString(PyExc_IOError, "bad message length");
+        break;
+    case MP_EXCEPTION_HAS_BEEN_SET:
+        break;
+    default:
+        PyErr_Format(PyExc_RuntimeError,
+                     "unknown error number %d", num);
+    }
+    return NULL;
+}
+
+
+/*
+ * Windows only
+ */
+
+#ifdef MS_WINDOWS
+
+/* On Windows we set an event to signal Ctrl-C; compare with timemodule.c */
+
+HANDLE sigint_event = NULL;
+
+static BOOL WINAPI
+ProcessingCtrlHandler(DWORD dwCtrlType)
+{
+    SetEvent(sigint_event);
+    return FALSE;
+}
+
+/*
+ * Unix only
+ */
+
+#else /* !MS_WINDOWS */
+
+#if HAVE_FD_TRANSFER
+
+/* Functions for transferring file descriptors between processes.
+   Reimplements some of the functionality of the fdcred
+   module at http://www.mca-ltd.com/resources/fdcred_1.tgz. */
+/* Based in http://resin.csoft.net/cgi-bin/man.cgi?section=3&topic=CMSG_DATA */
+
+static PyObject *
+multiprocessing_sendfd(PyObject *self, PyObject *args)
+{
+    int conn, fd, res;
+    struct iovec dummy_iov;
+    char dummy_char;
+    struct msghdr msg;
+    struct cmsghdr *cmsg;
+    union {
+        struct cmsghdr hdr;
+        unsigned char buf[CMSG_SPACE(sizeof(int))];
+    } cmsgbuf;
+
+    if (!PyArg_ParseTuple(args, "ii", &conn, &fd))
+        return NULL;
+
+    dummy_iov.iov_base = &dummy_char;
+    dummy_iov.iov_len = 1;
+
+    memset(&msg, 0, sizeof(msg));
+    msg.msg_control = &cmsgbuf.buf;
+    msg.msg_controllen = sizeof(cmsgbuf.buf);
+    msg.msg_iov = &dummy_iov;
+    msg.msg_iovlen = 1;
+
+    cmsg = CMSG_FIRSTHDR(&msg);
+    cmsg->cmsg_len = CMSG_LEN(sizeof(int));
+    cmsg->cmsg_level = SOL_SOCKET;
+    cmsg->cmsg_type = SCM_RIGHTS;
+    * (int *) CMSG_DATA(cmsg) = fd;
+
+    Py_BEGIN_ALLOW_THREADS
+    res = sendmsg(conn, &msg, 0);
+    Py_END_ALLOW_THREADS
+
+    if (res < 0)
+        return PyErr_SetFromErrno(PyExc_OSError);
+    Py_RETURN_NONE;
+}
+
+static PyObject *
+multiprocessing_recvfd(PyObject *self, PyObject *args)
+{
+    int conn, fd, res;
+    char dummy_char;
+    struct iovec dummy_iov;
+    struct msghdr msg = {0};
+    struct cmsghdr *cmsg;
+    union {
+        struct cmsghdr hdr;
+        unsigned char buf[CMSG_SPACE(sizeof(int))];
+    } cmsgbuf;
+
+    if (!PyArg_ParseTuple(args, "i", &conn))
+        return NULL;
+
+    dummy_iov.iov_base = &dummy_char;
+    dummy_iov.iov_len = 1;
+
+    memset(&msg, 0, sizeof(msg));
+    msg.msg_control = &cmsgbuf.buf;
+    msg.msg_controllen = sizeof(cmsgbuf.buf);
+    msg.msg_iov = &dummy_iov;
+    msg.msg_iovlen = 1;
+
+    cmsg = CMSG_FIRSTHDR(&msg);
+    cmsg->cmsg_level = SOL_SOCKET;
+    cmsg->cmsg_type = SCM_RIGHTS;
+    cmsg->cmsg_len = CMSG_LEN(sizeof(int));
+    msg.msg_controllen = cmsg->cmsg_len;
+
+    Py_BEGIN_ALLOW_THREADS
+    res = recvmsg(conn, &msg, 0);
+    Py_END_ALLOW_THREADS
+
+    if (res < 0)
+        return PyErr_SetFromErrno(PyExc_OSError);
+
+    if (msg.msg_controllen < CMSG_LEN(sizeof(int)) ||
+        (cmsg = CMSG_FIRSTHDR(&msg)) == NULL ||
+        cmsg->cmsg_level != SOL_SOCKET ||
+        cmsg->cmsg_type != SCM_RIGHTS ||
+        cmsg->cmsg_len < CMSG_LEN(sizeof(int))) {
+        /* If at least one control message is present, there should be
+           no room for any further data in the buffer. */
+        PyErr_SetString(PyExc_RuntimeError, "No file descriptor received");
+        return NULL;
+    }
+
+    fd = * (int *) CMSG_DATA(cmsg);
+    return Py_BuildValue("i", fd);
+}
+
+#endif /* HAVE_FD_TRANSFER */
+
+#endif /* !MS_WINDOWS */
+
+
+/*
+ * All platforms
+ */
+
+static PyObject*
+multiprocessing_address_of_buffer(PyObject *self, PyObject *obj)
+{
+    void *buffer;
+    Py_ssize_t buffer_len;
+
+    if (PyObject_AsWriteBuffer(obj, &buffer, &buffer_len) < 0)
+        return NULL;
+
+    return Py_BuildValue("N" F_PY_SSIZE_T,
+                         PyLong_FromVoidPtr(buffer), buffer_len);
+}
+
+
+/*
+ * Function table
+ */
+
+static PyMethodDef module_methods[] = {
+    {"address_of_buffer", multiprocessing_address_of_buffer, METH_O,
+     "address_of_buffer(obj) -> int\n"
+     "Return address of obj assuming obj supports buffer inteface"},
+#if HAVE_FD_TRANSFER
+    {"sendfd", multiprocessing_sendfd, METH_VARARGS,
+     "sendfd(sockfd, fd) -> None\n"
+     "Send file descriptor given by fd over the unix domain socket\n"
+     "whose file decriptor is sockfd"},
+    {"recvfd", multiprocessing_recvfd, METH_VARARGS,
+     "recvfd(sockfd) -> fd\n"
+     "Receive a file descriptor over a unix domain socket\n"
+     "whose file decriptor is sockfd"},
+#endif
+    {NULL}
+};
+
+
+/*
+ * Initialize
+ */
+
+PyMODINIT_FUNC
+init_multiprocessing(void)
+{
+    PyObject *module, *temp, *value;
+
+    /* Initialize module */
+    module = Py_InitModule("_multiprocessing", module_methods);
+    if (!module)
+        return;
+
+    /* Get copy of objects from pickle */
+    temp = PyImport_ImportModule(PICKLE_MODULE);
+    if (!temp)
+        return;
+    pickle_dumps = PyObject_GetAttrString(temp, "dumps");
+    pickle_loads = PyObject_GetAttrString(temp, "loads");
+    pickle_protocol = PyObject_GetAttrString(temp, "HIGHEST_PROTOCOL");
+    Py_XDECREF(temp);
+
+    /* Get copy of BufferTooShort */
+    temp = PyImport_ImportModule("multiprocessing");
+    if (!temp)
+        return;
+    BufferTooShort = PyObject_GetAttrString(temp, "BufferTooShort");
+    Py_XDECREF(temp);
+
+    /* Add connection type to module */
+    if (PyType_Ready(&ConnectionType) < 0)
+        return;
+    Py_INCREF(&ConnectionType);
+    PyModule_AddObject(module, "Connection", (PyObject*)&ConnectionType);
+
+#if defined(MS_WINDOWS) ||                                              \
+  (defined(HAVE_SEM_OPEN) && !defined(POSIX_SEMAPHORES_NOT_ENABLED))
+    /* Add SemLock type to module */
+    if (PyType_Ready(&SemLockType) < 0)
+        return;
+    Py_INCREF(&SemLockType);
+    {
+        PyObject *py_sem_value_max;
+        /* Some systems define SEM_VALUE_MAX as an unsigned value that
+         * causes it to be negative when used as an int (NetBSD). */
+        if ((int)(SEM_VALUE_MAX) < 0)
+            py_sem_value_max = PyLong_FromLong(INT_MAX);
+        else
+            py_sem_value_max = PyLong_FromLong(SEM_VALUE_MAX);
+        if (py_sem_value_max == NULL)
+            return;
+        PyDict_SetItemString(SemLockType.tp_dict, "SEM_VALUE_MAX",
+                             py_sem_value_max);
+    }
+    PyModule_AddObject(module, "SemLock", (PyObject*)&SemLockType);
+#endif
+
+#ifdef MS_WINDOWS
+    /* Add PipeConnection to module */
+    if (PyType_Ready(&PipeConnectionType) < 0)
+        return;
+    Py_INCREF(&PipeConnectionType);
+    PyModule_AddObject(module, "PipeConnection",
+                       (PyObject*)&PipeConnectionType);
+
+    /* Initialize win32 class and add to multiprocessing */
+    temp = create_win32_namespace();
+    if (!temp)
+        return;
+    PyModule_AddObject(module, "win32", temp);
+
+    /* Initialize the event handle used to signal Ctrl-C */
+    sigint_event = CreateEvent(NULL, TRUE, FALSE, NULL);
+    if (!sigint_event) {
+        PyErr_SetFromWindowsErr(0);
+        return;
+    }
+    if (!SetConsoleCtrlHandler(ProcessingCtrlHandler, TRUE)) {
+        PyErr_SetFromWindowsErr(0);
+        return;
+    }
+#endif
+
+    /* Add configuration macros */
+    temp = PyDict_New();
+    if (!temp)
+        return;
+#define ADD_FLAG(name)                                            \
+    value = Py_BuildValue("i", name);                             \
+    if (value == NULL) { Py_DECREF(temp); return; }               \
+    if (PyDict_SetItemString(temp, #name, value) < 0) {           \
+        Py_DECREF(temp); Py_DECREF(value); return; }              \
+    Py_DECREF(value)
+
+#if defined(HAVE_SEM_OPEN) && !defined(POSIX_SEMAPHORES_NOT_ENABLED)
+    ADD_FLAG(HAVE_SEM_OPEN);
+#endif
+#ifdef HAVE_SEM_TIMEDWAIT
+    ADD_FLAG(HAVE_SEM_TIMEDWAIT);
+#endif
+#ifdef HAVE_FD_TRANSFER
+    ADD_FLAG(HAVE_FD_TRANSFER);
+#endif
+#ifdef HAVE_BROKEN_SEM_GETVALUE
+    ADD_FLAG(HAVE_BROKEN_SEM_GETVALUE);
+#endif
+#ifdef HAVE_BROKEN_SEM_UNLINK
+    ADD_FLAG(HAVE_BROKEN_SEM_UNLINK);
+#endif
+    if (PyModule_AddObject(module, "flags", temp) < 0)
+        return;
+}
diff --git a/contrib/tools/python/src/Modules/_multiprocessing/multiprocessing.h b/contrib/tools/python/src/Modules/_multiprocessing/multiprocessing.h
new file mode 100644
index 0000000000..14425de821
--- /dev/null
+++ b/contrib/tools/python/src/Modules/_multiprocessing/multiprocessing.h
@@ -0,0 +1,189 @@
+#ifndef MULTIPROCESSING_H
+#define MULTIPROCESSING_H
+
+#define PY_SSIZE_T_CLEAN
+
+#ifdef __sun
+/* The control message API is only available on Solaris 
+   if XPG 4.2 or later is requested. */
+#define _XOPEN_SOURCE 500
+#endif
+
+#include "Python.h"
+#include "structmember.h"
+#include "pythread.h"
+
+/*
+ * Platform includes and definitions
+ */
+
+#ifdef MS_WINDOWS
+#  define WIN32_LEAN_AND_MEAN
+#  include <windows.h>
+#  include <winsock2.h>
+#  include <process.h>               /* getpid() */
+#  ifdef Py_DEBUG
+#    include <crtdbg.h>
+#  endif
+#  define SEM_HANDLE HANDLE
+#  define SEM_VALUE_MAX LONG_MAX
+#else
+#  include <fcntl.h>                 /* O_CREAT and O_EXCL */
+#  include <netinet/in.h>
+#  include <sys/socket.h>
+#  include <sys/uio.h>
+#  include <arpa/inet.h>             /* htonl() and ntohl() */
+#  if defined(HAVE_SEM_OPEN) && !defined(POSIX_SEMAPHORES_NOT_ENABLED)
+#    include <semaphore.h>
+     typedef sem_t *SEM_HANDLE;
+#  endif
+#  define HANDLE int
+#  define SOCKET int
+#  define BOOL int
+#  define UINT32 uint32_t
+#  define INT32 int32_t
+#  define TRUE 1
+#  define FALSE 0
+#  define INVALID_HANDLE_VALUE (-1)
+#endif
+
+/*
+ * Issue 3110 - Solaris does not define SEM_VALUE_MAX
+ */
+#ifndef SEM_VALUE_MAX
+    #if defined(HAVE_SYSCONF) && defined(_SC_SEM_VALUE_MAX)
+        # define SEM_VALUE_MAX sysconf(_SC_SEM_VALUE_MAX)
+    #elif defined(_SEM_VALUE_MAX)
+        # define SEM_VALUE_MAX _SEM_VALUE_MAX
+    #elif defined(_POSIX_SEM_VALUE_MAX)
+        # define SEM_VALUE_MAX _POSIX_SEM_VALUE_MAX
+    #else
+        # define SEM_VALUE_MAX INT_MAX
+    #endif
+#endif
+
+
+/*
+ * Make sure Py_ssize_t available
+ */
+
+#if PY_VERSION_HEX < 0x02050000 && !defined(PY_SSIZE_T_MIN)
+   typedef int Py_ssize_t;
+#  define PY_SSIZE_T_MAX INT_MAX
+#  define PY_SSIZE_T_MIN INT_MIN
+#  define F_PY_SSIZE_T "i"
+#  define PyInt_FromSsize_t(n) PyInt_FromLong((long)n)
+#else
+#  define F_PY_SSIZE_T "n"
+#endif
+
+/*
+ * Format codes
+ */
+
+#if SIZEOF_VOID_P == SIZEOF_LONG
+#  define F_POINTER "k"
+#  define T_POINTER T_ULONG
+#elif defined(HAVE_LONG_LONG) && (SIZEOF_VOID_P == SIZEOF_LONG_LONG)
+#  define F_POINTER "K"
+#  define T_POINTER T_ULONGLONG
+#else
+#  error "can't find format code for unsigned integer of same size as void*"
+#endif
+
+#ifdef MS_WINDOWS
+#  define F_HANDLE F_POINTER
+#  define T_HANDLE T_POINTER
+#  define F_SEM_HANDLE F_HANDLE
+#  define T_SEM_HANDLE T_HANDLE
+#  define F_DWORD "k"
+#  define T_DWORD T_ULONG
+#else
+#  define F_HANDLE "i"
+#  define T_HANDLE T_INT
+#  define F_SEM_HANDLE F_POINTER
+#  define T_SEM_HANDLE T_POINTER
+#endif
+
+#if PY_VERSION_HEX >= 0x03000000
+#  define F_RBUFFER "y"
+#else
+#  define F_RBUFFER "s"
+#endif
+
+/*
+ * Error codes which can be returned by functions called without GIL
+ */
+
+#define MP_SUCCESS (0)
+#define MP_STANDARD_ERROR (-1)
+#define MP_MEMORY_ERROR (-1001)
+#define MP_END_OF_FILE (-1002)
+#define MP_EARLY_END_OF_FILE (-1003)
+#define MP_BAD_MESSAGE_LENGTH (-1004)
+#define MP_SOCKET_ERROR (-1005)
+#define MP_EXCEPTION_HAS_BEEN_SET (-1006)
+
+PyObject *mp_SetError(PyObject *Type, int num);
+
+/*
+ * Externs - not all will really exist on all platforms
+ */
+
+extern PyObject *pickle_dumps;
+extern PyObject *pickle_loads;
+extern PyObject *pickle_protocol;
+extern PyObject *BufferTooShort;
+extern PyTypeObject SemLockType;
+extern PyTypeObject ConnectionType;
+extern PyTypeObject PipeConnectionType;
+extern HANDLE sigint_event;
+
+/*
+ * Py3k compatibility
+ */
+
+#if PY_VERSION_HEX >= 0x03000000
+#  define PICKLE_MODULE "pickle"
+#  define FROM_FORMAT PyUnicode_FromFormat
+#  define PyInt_FromLong PyLong_FromLong
+#  define PyInt_FromSsize_t PyLong_FromSsize_t
+#else
+#  define PICKLE_MODULE "cPickle"
+#  define FROM_FORMAT PyString_FromFormat
+#endif
+
+#ifndef PyVarObject_HEAD_INIT
+#  define PyVarObject_HEAD_INIT(type, size) PyObject_HEAD_INIT(type) size,
+#endif
+
+#ifndef Py_TPFLAGS_HAVE_WEAKREFS
+#  define Py_TPFLAGS_HAVE_WEAKREFS 0
+#endif
+
+/*
+ * Connection definition
+ */
+
+#define CONNECTION_BUFFER_SIZE 1024
+
+typedef struct {
+    PyObject_HEAD
+    HANDLE handle;
+    int flags;
+    PyObject *weakreflist;
+    char buffer[CONNECTION_BUFFER_SIZE];
+} ConnectionObject;
+
+/*
+ * Miscellaneous
+ */
+
+#define MAX_MESSAGE_LENGTH 0x7fffffff
+
+#ifndef MIN
+#  define MIN(x, y) ((x) < (y) ? x : y)
+#  define MAX(x, y) ((x) > (y) ? x : y)
+#endif
+
+#endif /* MULTIPROCESSING_H */
diff --git a/contrib/tools/python/src/Modules/_multiprocessing/pipe_connection.c b/contrib/tools/python/src/Modules/_multiprocessing/pipe_connection.c
new file mode 100644
index 0000000000..05dde0cf39
--- /dev/null
+++ b/contrib/tools/python/src/Modules/_multiprocessing/pipe_connection.c
@@ -0,0 +1,149 @@
+/*
+ * A type which wraps a pipe handle in message oriented mode
+ *
+ * pipe_connection.c
+ *
+ * Copyright (c) 2006-2008, R Oudkerk --- see COPYING.txt
+ */
+
+#include "multiprocessing.h"
+
+#define CLOSE(h) CloseHandle(h)
+
+/*
+ * Send string to the pipe; assumes in message oriented mode
+ */
+
+static Py_ssize_t
+conn_send_string(ConnectionObject *conn, char *string, size_t length)
+{
+    DWORD amount_written;
+    BOOL ret;
+
+    Py_BEGIN_ALLOW_THREADS
+    ret = WriteFile(conn->handle, string, length, &amount_written, NULL);
+    Py_END_ALLOW_THREADS
+
+    if (ret == 0 && GetLastError() == ERROR_NO_SYSTEM_RESOURCES) {
+        PyErr_Format(PyExc_ValueError, "Cannnot send %" PY_FORMAT_SIZE_T "d bytes over connection", length);
+        return MP_STANDARD_ERROR;
+    }
+
+    return ret ? MP_SUCCESS : MP_STANDARD_ERROR;
+}
+
+/*
+ * Attempts to read into buffer, or if buffer too small into *newbuffer.
+ *
+ * Returns number of bytes read.  Assumes in message oriented mode.
+ */
+
+static Py_ssize_t
+conn_recv_string(ConnectionObject *conn, char *buffer,
+                 size_t buflength, char **newbuffer, size_t maxlength)
+{
+    DWORD left, length, full_length, err;
+    BOOL ret;
+    *newbuffer = NULL;
+
+    Py_BEGIN_ALLOW_THREADS
+    ret = ReadFile(conn->handle, buffer, MIN(buflength, maxlength),
+                  &length, NULL);
+    Py_END_ALLOW_THREADS
+    if (ret)
+        return length;
+
+    err = GetLastError();
+    if (err != ERROR_MORE_DATA) {
+        if (err == ERROR_BROKEN_PIPE)
+            return MP_END_OF_FILE;
+        return MP_STANDARD_ERROR;
+    }
+
+    if (!PeekNamedPipe(conn->handle, NULL, 0, NULL, NULL, &left))
+        return MP_STANDARD_ERROR;
+
+    full_length = length + left;
+    if (full_length > maxlength)
+        return MP_BAD_MESSAGE_LENGTH;
+
+    *newbuffer = PyMem_Malloc(full_length);
+    if (*newbuffer == NULL)
+        return MP_MEMORY_ERROR;
+
+    memcpy(*newbuffer, buffer, length);
+
+    Py_BEGIN_ALLOW_THREADS
+    ret = ReadFile(conn->handle, *newbuffer+length, left, &length, NULL);
+    Py_END_ALLOW_THREADS
+    if (ret) {
+        assert(length == left);
+        return full_length;
+    } else {
+        PyMem_Free(*newbuffer);
+        return MP_STANDARD_ERROR;
+    }
+}
+
+/*
+ * Check whether any data is available for reading
+ */
+
+static int
+conn_poll(ConnectionObject *conn, double timeout, PyThreadState *_save)
+{
+    DWORD bytes, deadline, delay;
+    int difference, res;
+    BOOL block = FALSE;
+
+    if (!PeekNamedPipe(conn->handle, NULL, 0, NULL, &bytes, NULL))
+        return MP_STANDARD_ERROR;
+
+    if (timeout == 0.0)
+        return bytes > 0;
+
+    if (timeout < 0.0)
+        block = TRUE;
+    else
+        /* XXX does not check for overflow */
+        deadline = GetTickCount() + (DWORD)(1000 * timeout + 0.5);
+
+    Sleep(0);
+
+    for (delay = 1 ; ; delay += 1) {
+        if (!PeekNamedPipe(conn->handle, NULL, 0, NULL, &bytes, NULL))
+            return MP_STANDARD_ERROR;
+        else if (bytes > 0)
+            return TRUE;
+
+        if (!block) {
+            difference = deadline - GetTickCount();
+            if (difference < 0)
+                return FALSE;
+            if ((int)delay > difference)
+                delay = difference;
+        }
+
+        if (delay > 20)
+            delay = 20;
+
+        Sleep(delay);
+
+        /* check for signals */
+        Py_BLOCK_THREADS
+        res = PyErr_CheckSignals();
+        Py_UNBLOCK_THREADS
+
+        if (res)
+            return MP_EXCEPTION_HAS_BEEN_SET;
+    }
+}
+
+/*
+ * "connection.h" defines the PipeConnection type using the definitions above
+ */
+
+#define CONNECTION_NAME "PipeConnection"
+#define CONNECTION_TYPE PipeConnectionType
+
+#include "connection.h"
diff --git a/contrib/tools/python/src/Modules/_multiprocessing/semaphore.c b/contrib/tools/python/src/Modules/_multiprocessing/semaphore.c
new file mode 100644
index 0000000000..fc42754347
--- /dev/null
+++ b/contrib/tools/python/src/Modules/_multiprocessing/semaphore.c
@@ -0,0 +1,640 @@
+/*
+ * A type which wraps a semaphore
+ *
+ * semaphore.c
+ *
+ * Copyright (c) 2006-2008, R Oudkerk --- see COPYING.txt
+ */
+
+#include "multiprocessing.h"
+
+enum { RECURSIVE_MUTEX, SEMAPHORE };
+
+typedef struct {
+    PyObject_HEAD
+    SEM_HANDLE handle;
+    long last_tid;
+    int count;
+    int maxvalue;
+    int kind;
+} SemLockObject;
+
+#define ISMINE(o) (o->count > 0 && PyThread_get_thread_ident() == o->last_tid)
+
+
+#ifdef MS_WINDOWS
+
+/*
+ * Windows definitions
+ */
+
+#define SEM_FAILED NULL
+
+#define SEM_CLEAR_ERROR() SetLastError(0)
+#define SEM_GET_LAST_ERROR() GetLastError()
+#define SEM_CREATE(name, val, max) CreateSemaphore(NULL, val, max, NULL)
+#define SEM_CLOSE(sem) (CloseHandle(sem) ? 0 : -1)
+#define SEM_GETVALUE(sem, pval) _GetSemaphoreValue(sem, pval)
+#define SEM_UNLINK(name) 0
+
+static int
+_GetSemaphoreValue(HANDLE handle, long *value)
+{
+    long previous;
+
+    switch (WaitForSingleObject(handle, 0)) {
+    case WAIT_OBJECT_0:
+        if (!ReleaseSemaphore(handle, 1, &previous))
+            return MP_STANDARD_ERROR;
+        *value = previous + 1;
+        return 0;
+    case WAIT_TIMEOUT:
+        *value = 0;
+        return 0;
+    default:
+        return MP_STANDARD_ERROR;
+    }
+}
+
+static PyObject *
+semlock_acquire(SemLockObject *self, PyObject *args, PyObject *kwds)
+{
+    int blocking = 1;
+    double timeout;
+    PyObject *timeout_obj = Py_None;
+    DWORD res, full_msecs, msecs, start, ticks;
+
+    static char *kwlist[] = {"block", "timeout", NULL};
+
+    if (!PyArg_ParseTupleAndKeywords(args, kwds, "|iO", kwlist,
+                                     &blocking, &timeout_obj))
+        return NULL;
+
+    /* calculate timeout */
+    if (!blocking) {
+        full_msecs = 0;
+    } else if (timeout_obj == Py_None) {
+        full_msecs = INFINITE;
+    } else {
+        timeout = PyFloat_AsDouble(timeout_obj);
+        if (PyErr_Occurred())
+            return NULL;
+        timeout *= 1000.0;      /* convert to millisecs */
+        if (timeout < 0.0) {
+            timeout = 0.0;
+        } else if (timeout >= 0.5 * INFINITE) { /* 25 days */
+            PyErr_SetString(PyExc_OverflowError,
+                            "timeout is too large");
+            return NULL;
+        }
+        full_msecs = (DWORD)(timeout + 0.5);
+    }
+
+    /* check whether we already own the lock */
+    if (self->kind == RECURSIVE_MUTEX && ISMINE(self)) {
+        ++self->count;
+        Py_RETURN_TRUE;
+    }
+
+    /* check whether we can acquire without blocking */
+    if (WaitForSingleObject(self->handle, 0) == WAIT_OBJECT_0) {
+        self->last_tid = GetCurrentThreadId();
+        ++self->count;
+        Py_RETURN_TRUE;
+    }
+
+    msecs = full_msecs;
+    start = GetTickCount();
+
+    for ( ; ; ) {
+        HANDLE handles[2] = {self->handle, sigint_event};
+
+        /* do the wait */
+        Py_BEGIN_ALLOW_THREADS
+        ResetEvent(sigint_event);
+        res = WaitForMultipleObjects(2, handles, FALSE, msecs);
+        Py_END_ALLOW_THREADS
+
+        /* handle result */
+        if (res != WAIT_OBJECT_0 + 1)
+            break;
+
+        /* got SIGINT so give signal handler a chance to run */
+        Sleep(1);
+
+        /* if this is main thread let KeyboardInterrupt be raised */
+        if (PyErr_CheckSignals())
+            return NULL;
+
+        /* recalculate timeout */
+        if (msecs != INFINITE) {
+            ticks = GetTickCount();
+            if ((DWORD)(ticks - start) >= full_msecs)
+                Py_RETURN_FALSE;
+            msecs = full_msecs - (ticks - start);
+        }
+    }
+
+    /* handle result */
+    switch (res) {
+    case WAIT_TIMEOUT:
+        Py_RETURN_FALSE;
+    case WAIT_OBJECT_0:
+        self->last_tid = GetCurrentThreadId();
+        ++self->count;
+        Py_RETURN_TRUE;
+    case WAIT_FAILED:
+        return PyErr_SetFromWindowsErr(0);
+    default:
+        PyErr_Format(PyExc_RuntimeError, "WaitForSingleObject() or "
+                     "WaitForMultipleObjects() gave unrecognized "
+                     "value %d", res);
+        return NULL;
+    }
+}
+
+static PyObject *
+semlock_release(SemLockObject *self, PyObject *args)
+{
+    if (self->kind == RECURSIVE_MUTEX) {
+        if (!ISMINE(self)) {
+            PyErr_SetString(PyExc_AssertionError, "attempt to "
+                            "release recursive lock not owned "
+                            "by thread");
+            return NULL;
+        }
+        if (self->count > 1) {
+            --self->count;
+            Py_RETURN_NONE;
+        }
+        assert(self->count == 1);
+    }
+
+    if (!ReleaseSemaphore(self->handle, 1, NULL)) {
+        if (GetLastError() == ERROR_TOO_MANY_POSTS) {
+            PyErr_SetString(PyExc_ValueError, "semaphore or lock "
+                            "released too many times");
+            return NULL;
+        } else {
+            return PyErr_SetFromWindowsErr(0);
+        }
+    }
+
+    --self->count;
+    Py_RETURN_NONE;
+}
+
+#else /* !MS_WINDOWS */
+
+/*
+ * Unix definitions
+ */
+
+#define SEM_CLEAR_ERROR()
+#define SEM_GET_LAST_ERROR() 0
+#define SEM_CREATE(name, val, max) sem_open(name, O_CREAT | O_EXCL, 0600, val)
+#define SEM_CLOSE(sem) sem_close(sem)
+#define SEM_GETVALUE(sem, pval) sem_getvalue(sem, pval)
+#define SEM_UNLINK(name) sem_unlink(name)
+
+/* OS X 10.4 defines SEM_FAILED as -1 instead of (sem_t *)-1;  this gives
+   compiler warnings, and (potentially) undefined behaviour. */
+#ifdef __APPLE__
+#  undef SEM_FAILED
+#  define SEM_FAILED ((sem_t *)-1)
+#endif
+
+#ifndef HAVE_SEM_UNLINK
+#  define sem_unlink(name) 0
+#endif
+
+#ifndef HAVE_SEM_TIMEDWAIT
+#  define sem_timedwait(sem,deadline) sem_timedwait_save(sem,deadline,_save)
+
+int
+sem_timedwait_save(sem_t *sem, struct timespec *deadline, PyThreadState *_save)
+{
+    int res;
+    unsigned long delay, difference;
+    struct timeval now, tvdeadline, tvdelay;
+
+    errno = 0;
+    tvdeadline.tv_sec = deadline->tv_sec;
+    tvdeadline.tv_usec = deadline->tv_nsec / 1000;
+
+    for (delay = 0 ; ; delay += 1000) {
+        /* poll */
+        if (sem_trywait(sem) == 0)
+            return 0;
+        else if (errno != EAGAIN)
+            return MP_STANDARD_ERROR;
+
+        /* get current time */
+        if (gettimeofday(&now, NULL) < 0)
+            return MP_STANDARD_ERROR;
+
+        /* check for timeout */
+        if (tvdeadline.tv_sec < now.tv_sec ||
+            (tvdeadline.tv_sec == now.tv_sec &&
+             tvdeadline.tv_usec <= now.tv_usec)) {
+            errno = ETIMEDOUT;
+            return MP_STANDARD_ERROR;
+        }
+
+        /* calculate how much time is left */
+        difference = (tvdeadline.tv_sec - now.tv_sec) * 1000000 +
+            (tvdeadline.tv_usec - now.tv_usec);
+
+        /* check delay not too long -- maximum is 20 msecs */
+        if (delay > 20000)
+            delay = 20000;
+        if (delay > difference)
+            delay = difference;
+
+        /* sleep */
+        tvdelay.tv_sec = delay / 1000000;
+        tvdelay.tv_usec = delay % 1000000;
+        if (select(0, NULL, NULL, NULL, &tvdelay) < 0)
+            return MP_STANDARD_ERROR;
+
+        /* check for signals */
+        Py_BLOCK_THREADS
+        res = PyErr_CheckSignals();
+        Py_UNBLOCK_THREADS
+
+        if (res) {
+            errno = EINTR;
+            return MP_EXCEPTION_HAS_BEEN_SET;
+        }
+    }
+}
+
+#endif /* !HAVE_SEM_TIMEDWAIT */
+
+static PyObject *
+semlock_acquire(SemLockObject *self, PyObject *args, PyObject *kwds)
+{
+    int blocking = 1, res;
+    double timeout;
+    PyObject *timeout_obj = Py_None;
+    struct timespec deadline = {0};
+    struct timeval now;
+    long sec, nsec;
+
+    static char *kwlist[] = {"block", "timeout", NULL};
+
+    if (!PyArg_ParseTupleAndKeywords(args, kwds, "|iO", kwlist,
+                                     &blocking, &timeout_obj))
+        return NULL;
+
+    if (self->kind == RECURSIVE_MUTEX && ISMINE(self)) {
+        ++self->count;
+        Py_RETURN_TRUE;
+    }
+
+    if (timeout_obj != Py_None) {
+        timeout = PyFloat_AsDouble(timeout_obj);
+        if (PyErr_Occurred())
+            return NULL;
+        if (timeout < 0.0)
+            timeout = 0.0;
+
+        if (gettimeofday(&now, NULL) < 0) {
+            PyErr_SetFromErrno(PyExc_OSError);
+            return NULL;
+        }
+        sec = (long) timeout;
+        nsec = (long) (1e9 * (timeout - sec) + 0.5);
+        deadline.tv_sec = now.tv_sec + sec;
+        deadline.tv_nsec = now.tv_usec * 1000 + nsec;
+        deadline.tv_sec += (deadline.tv_nsec / 1000000000);
+        deadline.tv_nsec %= 1000000000;
+    }
+
+    do {
+        Py_BEGIN_ALLOW_THREADS
+        if (blocking && timeout_obj == Py_None)
+            res = sem_wait(self->handle);
+        else if (!blocking)
+            res = sem_trywait(self->handle);
+        else
+            res = sem_timedwait(self->handle, &deadline);
+        Py_END_ALLOW_THREADS
+        if (res == MP_EXCEPTION_HAS_BEEN_SET)
+            break;
+    } while (res < 0 && errno == EINTR && !PyErr_CheckSignals());
+
+    if (res < 0) {
+        if (errno == EAGAIN || errno == ETIMEDOUT)
+            Py_RETURN_FALSE;
+        else if (errno == EINTR)
+            return NULL;
+        else
+            return PyErr_SetFromErrno(PyExc_OSError);
+    }
+
+    ++self->count;
+    self->last_tid = PyThread_get_thread_ident();
+
+    Py_RETURN_TRUE;
+}
+
+static PyObject *
+semlock_release(SemLockObject *self, PyObject *args)
+{
+    if (self->kind == RECURSIVE_MUTEX) {
+        if (!ISMINE(self)) {
+            PyErr_SetString(PyExc_AssertionError, "attempt to "
+                            "release recursive lock not owned "
+                            "by thread");
+            return NULL;
+        }
+        if (self->count > 1) {
+            --self->count;
+            Py_RETURN_NONE;
+        }
+        assert(self->count == 1);
+    } else {
+#ifdef HAVE_BROKEN_SEM_GETVALUE
+        /* We will only check properly the maxvalue == 1 case */
+        if (self->maxvalue == 1) {
+            /* make sure that already locked */
+            if (sem_trywait(self->handle) < 0) {
+                if (errno != EAGAIN) {
+                    PyErr_SetFromErrno(PyExc_OSError);
+                    return NULL;
+                }
+                /* it is already locked as expected */
+            } else {
+                /* it was not locked so undo wait and raise  */
+                if (sem_post(self->handle) < 0) {
+                    PyErr_SetFromErrno(PyExc_OSError);
+                    return NULL;
+                }
+                PyErr_SetString(PyExc_ValueError, "semaphore "
+                                "or lock released too many "
+                                "times");
+                return NULL;
+            }
+        }
+#else
+        int sval;
+
+        /* This check is not an absolute guarantee that the semaphore
+           does not rise above maxvalue. */
+        if (sem_getvalue(self->handle, &sval) < 0) {
+            return PyErr_SetFromErrno(PyExc_OSError);
+        } else if (sval >= self->maxvalue) {
+            PyErr_SetString(PyExc_ValueError, "semaphore or lock "
+                            "released too many times");
+            return NULL;
+        }
+#endif
+    }
+
+    if (sem_post(self->handle) < 0)
+        return PyErr_SetFromErrno(PyExc_OSError);
+
+    --self->count;
+    Py_RETURN_NONE;
+}
+
+#endif /* !MS_WINDOWS */
+
+/*
+ * All platforms
+ */
+
+static PyObject *
+newsemlockobject(PyTypeObject *type, SEM_HANDLE handle, int kind, int maxvalue)
+{
+    SemLockObject *self;
+
+    self = PyObject_New(SemLockObject, type);
+    if (!self)
+        return NULL;
+    self->handle = handle;
+    self->kind = kind;
+    self->count = 0;
+    self->last_tid = 0;
+    self->maxvalue = maxvalue;
+    return (PyObject*)self;
+}
+
+static PyObject *
+semlock_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
+{
+    char buffer[256];
+    SEM_HANDLE handle = SEM_FAILED;
+    int kind, maxvalue, value;
+    PyObject *result;
+    static char *kwlist[] = {"kind", "value", "maxvalue", NULL};
+    int try = 0;
+
+    if (!PyArg_ParseTupleAndKeywords(args, kwds, "iii", kwlist,
+                                     &kind, &value, &maxvalue))
+        return NULL;
+
+    if (kind != RECURSIVE_MUTEX && kind != SEMAPHORE) {
+        PyErr_SetString(PyExc_ValueError, "unrecognized kind");
+        return NULL;
+    }
+
+    /* Create a semaphore with a unique name. The bytes returned by
+     * _PyOS_URandom() are treated as unsigned long to ensure that the filename
+     * is valid (no special characters). */
+    do {
+        unsigned long suffix;
+        _PyOS_URandom((char *)&suffix, sizeof(suffix));
+        PyOS_snprintf(buffer, sizeof(buffer), "/mp%ld-%lu", (long)getpid(),
+                      suffix);
+        SEM_CLEAR_ERROR();
+        handle = SEM_CREATE(buffer, value, maxvalue);
+    } while ((handle == SEM_FAILED) && (errno == EEXIST) && (++try < 100));
+
+    /* On Windows we should fail if GetLastError()==ERROR_ALREADY_EXISTS */
+    if (handle == SEM_FAILED || SEM_GET_LAST_ERROR() != 0)
+        goto failure;
+
+    if (SEM_UNLINK(buffer) < 0)
+        goto failure;
+
+    result = newsemlockobject(type, handle, kind, maxvalue);
+    if (!result)
+        goto failure;
+
+    return result;
+
+  failure:
+    if (handle != SEM_FAILED)
+        SEM_CLOSE(handle);
+    mp_SetError(NULL, MP_STANDARD_ERROR);
+    return NULL;
+}
+
+static PyObject *
+semlock_rebuild(PyTypeObject *type, PyObject *args)
+{
+    SEM_HANDLE handle;
+    int kind, maxvalue;
+
+    if (!PyArg_ParseTuple(args, F_SEM_HANDLE "ii",
+                          &handle, &kind, &maxvalue))
+        return NULL;
+
+    return newsemlockobject(type, handle, kind, maxvalue);
+}
+
+static void
+semlock_dealloc(SemLockObject* self)
+{
+    if (self->handle != SEM_FAILED)
+        SEM_CLOSE(self->handle);
+    PyObject_Del(self);
+}
+
+static PyObject *
+semlock_count(SemLockObject *self)
+{
+    return PyInt_FromLong((long)self->count);
+}
+
+static PyObject *
+semlock_ismine(SemLockObject *self)
+{
+    /* only makes sense for a lock */
+    return PyBool_FromLong(ISMINE(self));
+}
+
+static PyObject *
+semlock_getvalue(SemLockObject *self)
+{
+#ifdef HAVE_BROKEN_SEM_GETVALUE
+    PyErr_SetNone(PyExc_NotImplementedError);
+    return NULL;
+#else
+    int sval;
+    if (SEM_GETVALUE(self->handle, &sval) < 0)
+        return mp_SetError(NULL, MP_STANDARD_ERROR);
+    /* some posix implementations use negative numbers to indicate
+       the number of waiting threads */
+    if (sval < 0)
+        sval = 0;
+    return PyInt_FromLong((long)sval);
+#endif
+}
+
+static PyObject *
+semlock_iszero(SemLockObject *self)
+{
+#ifdef HAVE_BROKEN_SEM_GETVALUE
+    if (sem_trywait(self->handle) < 0) {
+        if (errno == EAGAIN)
+            Py_RETURN_TRUE;
+        return mp_SetError(NULL, MP_STANDARD_ERROR);
+    } else {
+        if (sem_post(self->handle) < 0)
+            return mp_SetError(NULL, MP_STANDARD_ERROR);
+        Py_RETURN_FALSE;
+    }
+#else
+    int sval;
+    if (SEM_GETVALUE(self->handle, &sval) < 0)
+        return mp_SetError(NULL, MP_STANDARD_ERROR);
+    return PyBool_FromLong((long)sval == 0);
+#endif
+}
+
+static PyObject *
+semlock_afterfork(SemLockObject *self)
+{
+    self->count = 0;
+    Py_RETURN_NONE;
+}
+
+/*
+ * Semaphore methods
+ */
+
+static PyMethodDef semlock_methods[] = {
+    {"acquire", (PyCFunction)semlock_acquire, METH_VARARGS | METH_KEYWORDS,
+     "acquire the semaphore/lock"},
+    {"release", (PyCFunction)semlock_release, METH_NOARGS,
+     "release the semaphore/lock"},
+    {"__enter__", (PyCFunction)semlock_acquire, METH_VARARGS | METH_KEYWORDS,
+     "enter the semaphore/lock"},
+    {"__exit__", (PyCFunction)semlock_release, METH_VARARGS,
+     "exit the semaphore/lock"},
+    {"_count", (PyCFunction)semlock_count, METH_NOARGS,
+     "num of `acquire()`s minus num of `release()`s for this process"},
+    {"_is_mine", (PyCFunction)semlock_ismine, METH_NOARGS,
+     "whether the lock is owned by this thread"},
+    {"_get_value", (PyCFunction)semlock_getvalue, METH_NOARGS,
+     "get the value of the semaphore"},
+    {"_is_zero", (PyCFunction)semlock_iszero, METH_NOARGS,
+     "returns whether semaphore has value zero"},
+    {"_rebuild", (PyCFunction)semlock_rebuild, METH_VARARGS | METH_CLASS,
+     ""},
+    {"_after_fork", (PyCFunction)semlock_afterfork, METH_NOARGS,
+     "rezero the net acquisition count after fork()"},
+    {NULL}
+};
+
+/*
+ * Member table
+ */
+
+static PyMemberDef semlock_members[] = {
+    {"handle", T_SEM_HANDLE, offsetof(SemLockObject, handle), READONLY,
+     ""},
+    {"kind", T_INT, offsetof(SemLockObject, kind), READONLY,
+     ""},
+    {"maxvalue", T_INT, offsetof(SemLockObject, maxvalue), READONLY,
+     ""},
+    {NULL}
+};
+
+/*
+ * Semaphore type
+ */
+
+PyTypeObject SemLockType = {
+    PyVarObject_HEAD_INIT(NULL, 0)
+    /* tp_name           */ "_multiprocessing.SemLock",
+    /* tp_basicsize      */ sizeof(SemLockObject),
+    /* tp_itemsize       */ 0,
+    /* tp_dealloc        */ (destructor)semlock_dealloc,
+    /* tp_print          */ 0,
+    /* tp_getattr        */ 0,
+    /* tp_setattr        */ 0,
+    /* tp_compare        */ 0,
+    /* tp_repr           */ 0,
+    /* tp_as_number      */ 0,
+    /* tp_as_sequence    */ 0,
+    /* tp_as_mapping     */ 0,
+    /* tp_hash           */ 0,
+    /* tp_call           */ 0,
+    /* tp_str            */ 0,
+    /* tp_getattro       */ 0,
+    /* tp_setattro       */ 0,
+    /* tp_as_buffer      */ 0,
+    /* tp_flags          */ Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,
+    /* tp_doc            */ "Semaphore/Mutex type",
+    /* tp_traverse       */ 0,
+    /* tp_clear          */ 0,
+    /* tp_richcompare    */ 0,
+    /* tp_weaklistoffset */ 0,
+    /* tp_iter           */ 0,
+    /* tp_iternext       */ 0,
+    /* tp_methods        */ semlock_methods,
+    /* tp_members        */ semlock_members,
+    /* tp_getset         */ 0,
+    /* tp_base           */ 0,
+    /* tp_dict           */ 0,
+    /* tp_descr_get      */ 0,
+    /* tp_descr_set      */ 0,
+    /* tp_dictoffset     */ 0,
+    /* tp_init           */ 0,
+    /* tp_alloc          */ 0,
+    /* tp_new            */ semlock_new,
+};
diff --git a/contrib/tools/python/src/Modules/_multiprocessing/socket_connection.c b/contrib/tools/python/src/Modules/_multiprocessing/socket_connection.c
new file mode 100644
index 0000000000..bdb0a32e37
--- /dev/null
+++ b/contrib/tools/python/src/Modules/_multiprocessing/socket_connection.c
@@ -0,0 +1,277 @@
+/*
+ * A type which wraps a socket
+ *
+ * socket_connection.c
+ *
+ * Copyright (c) 2006-2008, R Oudkerk --- see COPYING.txt
+ */
+
+#include "multiprocessing.h"
+
+#if defined(HAVE_POLL) && !defined(HAVE_BROKEN_POLL)
+#  include "poll.h"
+#endif
+
+#ifdef MS_WINDOWS
+#  define WRITE(h, buffer, length) send((SOCKET)h, buffer, length, 0)
+#  define READ(h, buffer, length) recv((SOCKET)h, buffer, length, 0)
+#  define CLOSE(h) closesocket((SOCKET)h)
+#else
+#  define WRITE(h, buffer, length) write(h, buffer, length)
+#  define READ(h, buffer, length) read(h, buffer, length)
+#  define CLOSE(h) close(h)
+#endif
+
+/*
+ * Wrapper for PyErr_CheckSignals() which can be called without the GIL
+ */
+
+static int
+check_signals(void)
+{
+    PyGILState_STATE state;
+    int res;
+    state = PyGILState_Ensure();
+    res = PyErr_CheckSignals();
+    PyGILState_Release(state);
+    return res;
+}
+
+/*
+ * Send string to file descriptor
+ */
+
+static Py_ssize_t
+_conn_sendall(HANDLE h, char *string, size_t length)
+{
+    char *p = string;
+    Py_ssize_t res;
+
+    while (length > 0) {
+        res = WRITE(h, p, length);
+        if (res < 0) {
+            if (errno == EINTR) {
+                if (check_signals() < 0)
+                    return MP_EXCEPTION_HAS_BEEN_SET;
+                continue;
+            }
+            return MP_SOCKET_ERROR;
+        }
+        length -= res;
+        p += res;
+    }
+
+    return MP_SUCCESS;
+}
+
+/*
+ * Receive string of exact length from file descriptor
+ */
+
+static Py_ssize_t
+_conn_recvall(HANDLE h, char *buffer, size_t length)
+{
+    size_t remaining = length;
+    Py_ssize_t temp;
+    char *p = buffer;
+
+    while (remaining > 0) {
+        temp = READ(h, p, remaining);
+        if (temp < 0) {
+            if (errno == EINTR) {
+                if (check_signals() < 0)
+                    return MP_EXCEPTION_HAS_BEEN_SET;
+                continue;
+            }
+            return temp;
+        }
+        else if (temp == 0) {
+            return remaining == length ? MP_END_OF_FILE : MP_EARLY_END_OF_FILE;
+        }
+        remaining -= temp;
+        p += temp;
+    }
+
+    return MP_SUCCESS;
+}
+
+/*
+ * Send a string prepended by the string length in network byte order
+ */
+
+static Py_ssize_t
+conn_send_string(ConnectionObject *conn, char *string, size_t length)
+{
+    Py_ssize_t res;
+    /* The "header" of the message is a 32 bit unsigned number (in
+       network order) which specifies the length of the "body".  If
+       the message is shorter than about 16kb then it is quicker to
+       combine the "header" and the "body" of the message and send
+       them at once. */
+    if (length < (16*1024)) {
+        char *message;
+
+        message = PyMem_Malloc(length+4);
+        if (message == NULL)
+            return MP_MEMORY_ERROR;
+
+        *(UINT32*)message = htonl((UINT32)length);
+        memcpy(message+4, string, length);
+        Py_BEGIN_ALLOW_THREADS
+        res = _conn_sendall(conn->handle, message, length+4);
+        Py_END_ALLOW_THREADS
+        PyMem_Free(message);
+    } else {
+        UINT32 lenbuff;
+
+        if (length > MAX_MESSAGE_LENGTH)
+            return MP_BAD_MESSAGE_LENGTH;
+
+        lenbuff = htonl((UINT32)length);
+        Py_BEGIN_ALLOW_THREADS
+        res = _conn_sendall(conn->handle, (char*)&lenbuff, 4) ||
+            _conn_sendall(conn->handle, string, length);
+        Py_END_ALLOW_THREADS
+    }
+    return res;
+}
+
+/*
+ * Attempts to read into buffer, or failing that into *newbuffer
+ *
+ * Returns number of bytes read.
+ */
+
+static Py_ssize_t
+conn_recv_string(ConnectionObject *conn, char *buffer,
+                 size_t buflength, char **newbuffer, size_t maxlength)
+{
+    Py_ssize_t res;
+    UINT32 ulength;
+
+    *newbuffer = NULL;
+
+    Py_BEGIN_ALLOW_THREADS
+    res = _conn_recvall(conn->handle, (char*)&ulength, 4);
+    Py_END_ALLOW_THREADS
+    if (res < 0)
+        return res;
+
+    ulength = ntohl(ulength);
+    if (ulength > maxlength)
+        return MP_BAD_MESSAGE_LENGTH;
+
+    if (ulength > buflength) {
+        *newbuffer = buffer = PyMem_Malloc((size_t)ulength);
+        if (buffer == NULL)
+            return MP_MEMORY_ERROR;
+    }
+
+    Py_BEGIN_ALLOW_THREADS
+    res = _conn_recvall(conn->handle, buffer, (size_t)ulength);
+    Py_END_ALLOW_THREADS
+
+    if (res >= 0) {
+        res = (Py_ssize_t)ulength;
+    } else if (*newbuffer != NULL) {
+        PyMem_Free(*newbuffer);
+        *newbuffer = NULL;
+    }
+    return res;
+}
+
+/*
+ * Check whether any data is available for reading -- neg timeout blocks
+ */
+
+static int
+conn_poll(ConnectionObject *conn, double timeout, PyThreadState *_save)
+{
+#if defined(HAVE_POLL) && !defined(HAVE_BROKEN_POLL)
+    int res;
+    struct pollfd p;
+
+    p.fd = (int)conn->handle;
+    p.events = POLLIN | POLLPRI;
+    p.revents = 0;
+
+    if (timeout < 0) {
+        do {
+            res = poll(&p, 1, -1);
+        } while (res < 0 && errno == EINTR);
+    } else {
+        res = poll(&p, 1, (int)(timeout * 1000 + 0.5));
+        if (res < 0 && errno == EINTR) {
+            /* We were interrupted by a signal.  Just indicate a
+               timeout even though we are early. */
+            return FALSE;
+        }
+    }
+
+    if (res < 0) {
+        return MP_SOCKET_ERROR;
+    } else if (p.revents & (POLLNVAL|POLLERR)) {
+        Py_BLOCK_THREADS
+        PyErr_SetString(PyExc_IOError, "poll() gave POLLNVAL or POLLERR");
+        Py_UNBLOCK_THREADS
+        return MP_EXCEPTION_HAS_BEEN_SET;
+    } else if (p.revents != 0) {
+        return TRUE;
+    } else {
+        assert(res == 0);
+        return FALSE;
+    }
+#else
+    int res;
+    fd_set rfds;
+
+    /*
+     * Verify the handle, issue 3321. Not required for windows.
+     */
+    #ifndef MS_WINDOWS
+        if (((int)conn->handle) < 0 || ((int)conn->handle) >= FD_SETSIZE) {
+            Py_BLOCK_THREADS
+            PyErr_SetString(PyExc_IOError, "handle out of range in select()");
+            Py_UNBLOCK_THREADS
+            return MP_EXCEPTION_HAS_BEEN_SET;
+        }
+    #endif
+
+    FD_ZERO(&rfds);
+    FD_SET((SOCKET)conn->handle, &rfds);
+
+    if (timeout < 0.0) {
+        do {
+            res = select((int)conn->handle+1, &rfds, NULL, NULL, NULL);
+        } while (res < 0 && errno == EINTR);
+    } else {
+        struct timeval tv;
+        tv.tv_sec = (long)timeout;
+        tv.tv_usec = (long)((timeout - tv.tv_sec) * 1e6 + 0.5);
+        res = select((int)conn->handle+1, &rfds, NULL, NULL, &tv);
+        if (res < 0 && errno == EINTR) {
+            /* We were interrupted by a signal.  Just indicate a
+               timeout even though we are early. */
+            return FALSE;
+        }
+    }
+
+    if (res < 0) {
+        return MP_SOCKET_ERROR;
+    } else if (FD_ISSET(conn->handle, &rfds)) {
+        return TRUE;
+    } else {
+        assert(res == 0);
+        return FALSE;
+    }
+#endif
+}
+
+/*
+ * "connection.h" defines the Connection type using defs above
+ */
+
+#define CONNECTION_NAME "Connection"
+#define CONNECTION_TYPE ConnectionType
+
+#include "connection.h"
diff --git a/contrib/tools/python/src/Modules/_multiprocessing/win32_functions.c b/contrib/tools/python/src/Modules/_multiprocessing/win32_functions.c
new file mode 100644
index 0000000000..9425929469
--- /dev/null
+++ b/contrib/tools/python/src/Modules/_multiprocessing/win32_functions.c
@@ -0,0 +1,267 @@
+/*
+ * Win32 functions used by multiprocessing package
+ *
+ * win32_functions.c
+ *
+ * Copyright (c) 2006-2008, R Oudkerk --- see COPYING.txt
+ */
+
+#include "multiprocessing.h"
+
+
+#define WIN32_FUNCTION(func) \
+    {#func, (PyCFunction)win32_ ## func, METH_VARARGS | METH_STATIC, ""}
+
+#define WIN32_CONSTANT(fmt, con) \
+    PyDict_SetItemString(Win32Type.tp_dict, #con, Py_BuildValue(fmt, con))
+
+
+static PyObject *
+win32_CloseHandle(PyObject *self, PyObject *args)
+{
+    HANDLE hObject;
+    BOOL success;
+
+    if (!PyArg_ParseTuple(args, F_HANDLE, &hObject))
+        return NULL;
+
+    Py_BEGIN_ALLOW_THREADS
+    success = CloseHandle(hObject);
+    Py_END_ALLOW_THREADS
+
+    if (!success)
+        return PyErr_SetFromWindowsErr(0);
+
+    Py_RETURN_NONE;
+}
+
+static PyObject *
+win32_ConnectNamedPipe(PyObject *self, PyObject *args)
+{
+    HANDLE hNamedPipe;
+    LPOVERLAPPED lpOverlapped;
+    BOOL success;
+
+    if (!PyArg_ParseTuple(args, F_HANDLE F_POINTER,
+                          &hNamedPipe, &lpOverlapped))
+        return NULL;
+
+    Py_BEGIN_ALLOW_THREADS
+    success = ConnectNamedPipe(hNamedPipe, lpOverlapped);
+    Py_END_ALLOW_THREADS
+
+    if (!success)
+        return PyErr_SetFromWindowsErr(0);
+
+    Py_RETURN_NONE;
+}
+
+static PyObject *
+win32_CreateFile(PyObject *self, PyObject *args)
+{
+    LPCTSTR lpFileName;
+    DWORD dwDesiredAccess;
+    DWORD dwShareMode;
+    LPSECURITY_ATTRIBUTES lpSecurityAttributes;
+    DWORD dwCreationDisposition;
+    DWORD dwFlagsAndAttributes;
+    HANDLE hTemplateFile;
+    HANDLE handle;
+
+    if (!PyArg_ParseTuple(args, "s" F_DWORD F_DWORD F_POINTER
+                          F_DWORD F_DWORD F_HANDLE,
+                          &lpFileName, &dwDesiredAccess, &dwShareMode,
+                          &lpSecurityAttributes, &dwCreationDisposition,
+                          &dwFlagsAndAttributes, &hTemplateFile))
+        return NULL;
+
+    Py_BEGIN_ALLOW_THREADS
+    handle = CreateFile(lpFileName, dwDesiredAccess,
+                        dwShareMode, lpSecurityAttributes,
+                        dwCreationDisposition,
+                        dwFlagsAndAttributes, hTemplateFile);
+    Py_END_ALLOW_THREADS
+
+    if (handle == INVALID_HANDLE_VALUE)
+        return PyErr_SetFromWindowsErr(0);
+
+    return Py_BuildValue(F_HANDLE, handle);
+}
+
+static PyObject *
+win32_CreateNamedPipe(PyObject *self, PyObject *args)
+{
+    LPCTSTR lpName;
+    DWORD dwOpenMode;
+    DWORD dwPipeMode;
+    DWORD nMaxInstances;
+    DWORD nOutBufferSize;
+    DWORD nInBufferSize;
+    DWORD nDefaultTimeOut;
+    LPSECURITY_ATTRIBUTES lpSecurityAttributes;
+    HANDLE handle;
+
+    if (!PyArg_ParseTuple(args, "s" F_DWORD F_DWORD F_DWORD
+                          F_DWORD F_DWORD F_DWORD F_POINTER,
+                          &lpName, &dwOpenMode, &dwPipeMode,
+                          &nMaxInstances, &nOutBufferSize,
+                          &nInBufferSize, &nDefaultTimeOut,
+                          &lpSecurityAttributes))
+        return NULL;
+
+    Py_BEGIN_ALLOW_THREADS
+    handle = CreateNamedPipe(lpName, dwOpenMode, dwPipeMode,
+                             nMaxInstances, nOutBufferSize,
+                             nInBufferSize, nDefaultTimeOut,
+                             lpSecurityAttributes);
+    Py_END_ALLOW_THREADS
+
+    if (handle == INVALID_HANDLE_VALUE)
+        return PyErr_SetFromWindowsErr(0);
+
+    return Py_BuildValue(F_HANDLE, handle);
+}
+
+static PyObject *
+win32_ExitProcess(PyObject *self, PyObject *args)
+{
+    UINT uExitCode;
+
+    if (!PyArg_ParseTuple(args, "I", &uExitCode))
+        return NULL;
+
+    #if defined(Py_DEBUG)
+        SetErrorMode(SEM_FAILCRITICALERRORS|SEM_NOALIGNMENTFAULTEXCEPT|SEM_NOGPFAULTERRORBOX|SEM_NOOPENFILEERRORBOX);
+        _CrtSetReportMode(_CRT_ASSERT, _CRTDBG_MODE_DEBUG);
+    #endif
+
+
+    ExitProcess(uExitCode);
+
+    return NULL;
+}
+
+static PyObject *
+win32_GetLastError(PyObject *self, PyObject *args)
+{
+    return Py_BuildValue(F_DWORD, GetLastError());
+}
+
+static PyObject *
+win32_OpenProcess(PyObject *self, PyObject *args)
+{
+    DWORD dwDesiredAccess;
+    BOOL bInheritHandle;
+    DWORD dwProcessId;
+    HANDLE handle;
+
+    if (!PyArg_ParseTuple(args, F_DWORD "i" F_DWORD,
+                          &dwDesiredAccess, &bInheritHandle, &dwProcessId))
+        return NULL;
+
+    handle = OpenProcess(dwDesiredAccess, bInheritHandle, dwProcessId);
+    if (handle == NULL)
+        return PyErr_SetFromWindowsErr(0);
+
+    return Py_BuildValue(F_HANDLE, handle);
+}
+
+static PyObject *
+win32_SetNamedPipeHandleState(PyObject *self, PyObject *args)
+{
+    HANDLE hNamedPipe;
+    PyObject *oArgs[3];
+    DWORD dwArgs[3], *pArgs[3] = {NULL, NULL, NULL};
+    int i;
+
+    if (!PyArg_ParseTuple(args, F_HANDLE "OOO",
+                          &hNamedPipe, &oArgs[0], &oArgs[1], &oArgs[2]))
+        return NULL;
+
+    PyErr_Clear();
+
+    for (i = 0 ; i < 3 ; i++) {
+        if (oArgs[i] != Py_None) {
+            dwArgs[i] = PyInt_AsUnsignedLongMask(oArgs[i]);
+            if (PyErr_Occurred())
+                return NULL;
+            pArgs[i] = &dwArgs[i];
+        }
+    }
+
+    if (!SetNamedPipeHandleState(hNamedPipe, pArgs[0], pArgs[1], pArgs[2]))
+        return PyErr_SetFromWindowsErr(0);
+
+    Py_RETURN_NONE;
+}
+
+static PyObject *
+win32_WaitNamedPipe(PyObject *self, PyObject *args)
+{
+    LPCTSTR lpNamedPipeName;
+    DWORD nTimeOut;
+    BOOL success;
+
+    if (!PyArg_ParseTuple(args, "s" F_DWORD, &lpNamedPipeName, &nTimeOut))
+        return NULL;
+
+    Py_BEGIN_ALLOW_THREADS
+    success = WaitNamedPipe(lpNamedPipeName, nTimeOut);
+    Py_END_ALLOW_THREADS
+
+    if (!success)
+        return PyErr_SetFromWindowsErr(0);
+
+    Py_RETURN_NONE;
+}
+
+static PyMethodDef win32_methods[] = {
+    WIN32_FUNCTION(CloseHandle),
+    WIN32_FUNCTION(GetLastError),
+    WIN32_FUNCTION(OpenProcess),
+    WIN32_FUNCTION(ExitProcess),
+    WIN32_FUNCTION(ConnectNamedPipe),
+    WIN32_FUNCTION(CreateFile),
+    WIN32_FUNCTION(CreateNamedPipe),
+    WIN32_FUNCTION(SetNamedPipeHandleState),
+    WIN32_FUNCTION(WaitNamedPipe),
+    {NULL}
+};
+
+
+PyTypeObject Win32Type = {
+    PyVarObject_HEAD_INIT(NULL, 0)
+};
+
+
+PyObject *
+create_win32_namespace(void)
+{
+    Win32Type.tp_name = "_multiprocessing.win32";
+    Win32Type.tp_methods = win32_methods;
+    if (PyType_Ready(&Win32Type) < 0)
+        return NULL;
+    Py_INCREF(&Win32Type);
+
+    WIN32_CONSTANT(F_DWORD, ERROR_ALREADY_EXISTS);
+    WIN32_CONSTANT(F_DWORD, ERROR_NO_DATA);
+    WIN32_CONSTANT(F_DWORD, ERROR_PIPE_BUSY);
+    WIN32_CONSTANT(F_DWORD, ERROR_PIPE_CONNECTED);
+    WIN32_CONSTANT(F_DWORD, ERROR_SEM_TIMEOUT);
+    WIN32_CONSTANT(F_DWORD, GENERIC_READ);
+    WIN32_CONSTANT(F_DWORD, GENERIC_WRITE);
+    WIN32_CONSTANT(F_DWORD, INFINITE);
+    WIN32_CONSTANT(F_DWORD, NMPWAIT_WAIT_FOREVER);
+    WIN32_CONSTANT(F_DWORD, OPEN_EXISTING);
+    WIN32_CONSTANT(F_DWORD, PIPE_ACCESS_DUPLEX);
+    WIN32_CONSTANT(F_DWORD, PIPE_ACCESS_INBOUND);
+    WIN32_CONSTANT(F_DWORD, PIPE_READMODE_MESSAGE);
+    WIN32_CONSTANT(F_DWORD, PIPE_TYPE_MESSAGE);
+    WIN32_CONSTANT(F_DWORD, PIPE_UNLIMITED_INSTANCES);
+    WIN32_CONSTANT(F_DWORD, PIPE_WAIT);
+    WIN32_CONSTANT(F_DWORD, PROCESS_ALL_ACCESS);
+
+    WIN32_CONSTANT("i", NULL);
+
+    return (PyObject*)&Win32Type;
+}