mirror of
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dd69649660
children and raises BrokenProcessPool in such a situation. Previously it would reliably freeze/deadlock.
790 lines
22 KiB
C
790 lines
22 KiB
C
/*
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* Win32 functions used by multiprocessing package
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*
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* win32_functions.c
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*
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* Copyright (c) 2006-2008, R Oudkerk --- see COPYING.txt
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*/
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#include "multiprocessing.h"
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#define WIN32_FUNCTION(func) \
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{#func, (PyCFunction)win32_ ## func, METH_VARARGS | METH_STATIC, ""}
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#define WIN32_KWARGS_FUNCTION(func) \
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{#func, (PyCFunction)win32_ ## func, METH_VARARGS | METH_KEYWORDS | METH_STATIC, ""}
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#define WIN32_CONSTANT(fmt, con) \
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PyDict_SetItemString(Win32Type.tp_dict, #con, Py_BuildValue(fmt, con))
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/* Grab CancelIoEx dynamically from kernel32 */
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static int has_CancelIoEx = -1;
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static BOOL (CALLBACK *Py_CancelIoEx)(HANDLE, LPOVERLAPPED);
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static int
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check_CancelIoEx()
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{
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if (has_CancelIoEx == -1)
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{
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HINSTANCE hKernel32 = GetModuleHandle("KERNEL32");
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* (FARPROC *) &Py_CancelIoEx = GetProcAddress(hKernel32,
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"CancelIoEx");
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has_CancelIoEx = (Py_CancelIoEx != NULL);
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}
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return has_CancelIoEx;
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}
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/*
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* A Python object wrapping an OVERLAPPED structure and other useful data
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* for overlapped I/O
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*/
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typedef struct {
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PyObject_HEAD
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OVERLAPPED overlapped;
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/* For convenience, we store the file handle too */
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HANDLE handle;
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/* Whether there's I/O in flight */
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int pending;
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/* Whether I/O completed successfully */
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int completed;
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/* Buffer used for reading (optional) */
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PyObject *read_buffer;
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/* Buffer used for writing (optional) */
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Py_buffer write_buffer;
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} OverlappedObject;
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static void
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overlapped_dealloc(OverlappedObject *self)
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{
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int err = GetLastError();
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if (self->pending) {
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if (check_CancelIoEx())
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Py_CancelIoEx(self->handle, &self->overlapped);
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else {
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PyErr_SetString(PyExc_RuntimeError,
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"I/O operations still in flight while destroying "
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"Overlapped object, the process may crash");
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PyErr_WriteUnraisable(NULL);
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}
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}
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CloseHandle(self->overlapped.hEvent);
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SetLastError(err);
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if (self->write_buffer.obj)
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PyBuffer_Release(&self->write_buffer);
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Py_CLEAR(self->read_buffer);
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PyObject_Del(self);
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}
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static PyObject *
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overlapped_GetOverlappedResult(OverlappedObject *self, PyObject *waitobj)
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{
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int wait;
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BOOL res;
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DWORD transferred = 0;
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wait = PyObject_IsTrue(waitobj);
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if (wait < 0)
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return NULL;
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Py_BEGIN_ALLOW_THREADS
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res = GetOverlappedResult(self->handle, &self->overlapped, &transferred,
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wait != 0);
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Py_END_ALLOW_THREADS
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if (!res) {
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int err = GetLastError();
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if (err == ERROR_IO_INCOMPLETE)
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Py_RETURN_NONE;
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if (err != ERROR_MORE_DATA) {
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self->pending = 0;
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return PyErr_SetExcFromWindowsErr(PyExc_IOError, err);
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}
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}
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self->pending = 0;
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self->completed = 1;
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if (self->read_buffer) {
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assert(PyBytes_CheckExact(self->read_buffer));
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if (_PyBytes_Resize(&self->read_buffer, transferred))
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return NULL;
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}
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return Py_BuildValue("lN", (long) transferred, PyBool_FromLong(res));
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}
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static PyObject *
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overlapped_getbuffer(OverlappedObject *self)
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{
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PyObject *res;
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if (!self->completed) {
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PyErr_SetString(PyExc_ValueError,
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"can't get read buffer before GetOverlappedResult() "
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"signals the operation completed");
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return NULL;
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}
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res = self->read_buffer ? self->read_buffer : Py_None;
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Py_INCREF(res);
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return res;
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}
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static PyObject *
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overlapped_cancel(OverlappedObject *self)
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{
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BOOL res = TRUE;
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if (self->pending) {
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Py_BEGIN_ALLOW_THREADS
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if (check_CancelIoEx())
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res = Py_CancelIoEx(self->handle, &self->overlapped);
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else
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res = CancelIo(self->handle);
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Py_END_ALLOW_THREADS
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}
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/* CancelIoEx returns ERROR_NOT_FOUND if the I/O completed in-between */
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if (!res && GetLastError() != ERROR_NOT_FOUND)
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return PyErr_SetExcFromWindowsErr(PyExc_IOError, 0);
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self->pending = 0;
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Py_RETURN_NONE;
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}
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static PyMethodDef overlapped_methods[] = {
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{"GetOverlappedResult", (PyCFunction) overlapped_GetOverlappedResult,
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METH_O, NULL},
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{"getbuffer", (PyCFunction) overlapped_getbuffer, METH_NOARGS, NULL},
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{"cancel", (PyCFunction) overlapped_cancel, METH_NOARGS, NULL},
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{NULL}
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};
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static PyMemberDef overlapped_members[] = {
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{"event", T_HANDLE,
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offsetof(OverlappedObject, overlapped) + offsetof(OVERLAPPED, hEvent),
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READONLY, "overlapped event handle"},
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{NULL}
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};
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PyTypeObject OverlappedType = {
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PyVarObject_HEAD_INIT(NULL, 0)
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/* tp_name */ "_multiprocessing.win32.Overlapped",
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/* tp_basicsize */ sizeof(OverlappedObject),
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/* tp_itemsize */ 0,
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/* tp_dealloc */ (destructor) overlapped_dealloc,
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/* tp_print */ 0,
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/* tp_getattr */ 0,
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/* tp_setattr */ 0,
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/* tp_reserved */ 0,
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/* tp_repr */ 0,
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/* tp_as_number */ 0,
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/* tp_as_sequence */ 0,
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/* tp_as_mapping */ 0,
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/* tp_hash */ 0,
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/* tp_call */ 0,
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/* tp_str */ 0,
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/* tp_getattro */ 0,
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/* tp_setattro */ 0,
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/* tp_as_buffer */ 0,
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/* tp_flags */ Py_TPFLAGS_DEFAULT,
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/* tp_doc */ "OVERLAPPED structure wrapper",
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/* tp_traverse */ 0,
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/* tp_clear */ 0,
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/* tp_richcompare */ 0,
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/* tp_weaklistoffset */ 0,
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/* tp_iter */ 0,
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/* tp_iternext */ 0,
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/* tp_methods */ overlapped_methods,
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/* tp_members */ overlapped_members,
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/* tp_getset */ 0,
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/* tp_base */ 0,
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/* tp_dict */ 0,
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/* tp_descr_get */ 0,
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/* tp_descr_set */ 0,
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/* tp_dictoffset */ 0,
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/* tp_init */ 0,
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/* tp_alloc */ 0,
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/* tp_new */ 0,
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};
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static OverlappedObject *
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new_overlapped(HANDLE handle)
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{
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OverlappedObject *self;
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self = PyObject_New(OverlappedObject, &OverlappedType);
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if (!self)
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return NULL;
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self->handle = handle;
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self->read_buffer = NULL;
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self->pending = 0;
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self->completed = 0;
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memset(&self->overlapped, 0, sizeof(OVERLAPPED));
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memset(&self->write_buffer, 0, sizeof(Py_buffer));
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/* Manual reset, initially non-signalled */
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self->overlapped.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
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return self;
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}
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/*
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* Module functions
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*/
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static PyObject *
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win32_CloseHandle(PyObject *self, PyObject *args)
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{
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HANDLE hObject;
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BOOL success;
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if (!PyArg_ParseTuple(args, F_HANDLE, &hObject))
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return NULL;
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Py_BEGIN_ALLOW_THREADS
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success = CloseHandle(hObject);
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Py_END_ALLOW_THREADS
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if (!success)
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return PyErr_SetFromWindowsErr(0);
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Py_RETURN_NONE;
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}
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static PyObject *
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win32_ConnectNamedPipe(PyObject *self, PyObject *args, PyObject *kwds)
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{
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HANDLE hNamedPipe;
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int use_overlapped = 0;
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BOOL success;
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OverlappedObject *overlapped = NULL;
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static char *kwlist[] = {"handle", "overlapped", NULL};
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if (!PyArg_ParseTupleAndKeywords(args, kwds,
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F_HANDLE "|i", kwlist,
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&hNamedPipe, &use_overlapped))
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return NULL;
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if (use_overlapped) {
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overlapped = new_overlapped(hNamedPipe);
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if (!overlapped)
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return NULL;
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}
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Py_BEGIN_ALLOW_THREADS
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success = ConnectNamedPipe(hNamedPipe,
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overlapped ? &overlapped->overlapped : NULL);
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Py_END_ALLOW_THREADS
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if (overlapped) {
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int err = GetLastError();
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/* Overlapped ConnectNamedPipe never returns a success code */
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assert(success == 0);
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if (err == ERROR_IO_PENDING)
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overlapped->pending = 1;
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else if (err == ERROR_PIPE_CONNECTED)
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SetEvent(overlapped->overlapped.hEvent);
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else {
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Py_DECREF(overlapped);
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return PyErr_SetFromWindowsErr(err);
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}
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return (PyObject *) overlapped;
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}
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if (!success)
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return PyErr_SetFromWindowsErr(0);
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Py_RETURN_NONE;
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}
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static PyObject *
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win32_CreateFile(PyObject *self, PyObject *args)
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{
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LPCTSTR lpFileName;
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DWORD dwDesiredAccess;
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DWORD dwShareMode;
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LPSECURITY_ATTRIBUTES lpSecurityAttributes;
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DWORD dwCreationDisposition;
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DWORD dwFlagsAndAttributes;
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HANDLE hTemplateFile;
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HANDLE handle;
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if (!PyArg_ParseTuple(args, "s" F_DWORD F_DWORD F_POINTER
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F_DWORD F_DWORD F_HANDLE,
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&lpFileName, &dwDesiredAccess, &dwShareMode,
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&lpSecurityAttributes, &dwCreationDisposition,
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&dwFlagsAndAttributes, &hTemplateFile))
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return NULL;
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Py_BEGIN_ALLOW_THREADS
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handle = CreateFile(lpFileName, dwDesiredAccess,
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dwShareMode, lpSecurityAttributes,
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dwCreationDisposition,
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dwFlagsAndAttributes, hTemplateFile);
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Py_END_ALLOW_THREADS
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if (handle == INVALID_HANDLE_VALUE)
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return PyErr_SetFromWindowsErr(0);
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return Py_BuildValue(F_HANDLE, handle);
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}
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static PyObject *
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win32_CreateNamedPipe(PyObject *self, PyObject *args)
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{
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LPCTSTR lpName;
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DWORD dwOpenMode;
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DWORD dwPipeMode;
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DWORD nMaxInstances;
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DWORD nOutBufferSize;
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DWORD nInBufferSize;
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DWORD nDefaultTimeOut;
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LPSECURITY_ATTRIBUTES lpSecurityAttributes;
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HANDLE handle;
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if (!PyArg_ParseTuple(args, "s" F_DWORD F_DWORD F_DWORD
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F_DWORD F_DWORD F_DWORD F_POINTER,
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&lpName, &dwOpenMode, &dwPipeMode,
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&nMaxInstances, &nOutBufferSize,
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&nInBufferSize, &nDefaultTimeOut,
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&lpSecurityAttributes))
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return NULL;
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Py_BEGIN_ALLOW_THREADS
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handle = CreateNamedPipe(lpName, dwOpenMode, dwPipeMode,
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nMaxInstances, nOutBufferSize,
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nInBufferSize, nDefaultTimeOut,
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lpSecurityAttributes);
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Py_END_ALLOW_THREADS
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if (handle == INVALID_HANDLE_VALUE)
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return PyErr_SetFromWindowsErr(0);
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return Py_BuildValue(F_HANDLE, handle);
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}
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static PyObject *
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win32_ExitProcess(PyObject *self, PyObject *args)
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{
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UINT uExitCode;
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if (!PyArg_ParseTuple(args, "I", &uExitCode))
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return NULL;
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#if defined(Py_DEBUG)
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SetErrorMode(SEM_FAILCRITICALERRORS|SEM_NOALIGNMENTFAULTEXCEPT|SEM_NOGPFAULTERRORBOX|SEM_NOOPENFILEERRORBOX);
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_CrtSetReportMode(_CRT_ASSERT, _CRTDBG_MODE_DEBUG);
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#endif
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ExitProcess(uExitCode);
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return NULL;
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}
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static PyObject *
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win32_GetLastError(PyObject *self, PyObject *args)
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{
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return Py_BuildValue(F_DWORD, GetLastError());
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}
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static PyObject *
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win32_OpenProcess(PyObject *self, PyObject *args)
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{
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DWORD dwDesiredAccess;
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BOOL bInheritHandle;
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DWORD dwProcessId;
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HANDLE handle;
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if (!PyArg_ParseTuple(args, F_DWORD "i" F_DWORD,
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&dwDesiredAccess, &bInheritHandle, &dwProcessId))
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return NULL;
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handle = OpenProcess(dwDesiredAccess, bInheritHandle, dwProcessId);
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if (handle == NULL)
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return PyErr_SetFromWindowsErr(0);
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return Py_BuildValue(F_HANDLE, handle);
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}
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static PyObject *
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win32_SetNamedPipeHandleState(PyObject *self, PyObject *args)
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{
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HANDLE hNamedPipe;
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PyObject *oArgs[3];
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DWORD dwArgs[3], *pArgs[3] = {NULL, NULL, NULL};
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int i;
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if (!PyArg_ParseTuple(args, F_HANDLE "OOO",
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&hNamedPipe, &oArgs[0], &oArgs[1], &oArgs[2]))
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return NULL;
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PyErr_Clear();
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for (i = 0 ; i < 3 ; i++) {
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if (oArgs[i] != Py_None) {
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dwArgs[i] = PyLong_AsUnsignedLongMask(oArgs[i]);
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if (PyErr_Occurred())
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return NULL;
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pArgs[i] = &dwArgs[i];
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}
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}
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if (!SetNamedPipeHandleState(hNamedPipe, pArgs[0], pArgs[1], pArgs[2]))
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return PyErr_SetFromWindowsErr(0);
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Py_RETURN_NONE;
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}
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static PyObject *
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win32_WaitNamedPipe(PyObject *self, PyObject *args)
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{
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LPCTSTR lpNamedPipeName;
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DWORD nTimeOut;
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BOOL success;
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if (!PyArg_ParseTuple(args, "s" F_DWORD, &lpNamedPipeName, &nTimeOut))
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return NULL;
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Py_BEGIN_ALLOW_THREADS
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success = WaitNamedPipe(lpNamedPipeName, nTimeOut);
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Py_END_ALLOW_THREADS
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if (!success)
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return PyErr_SetFromWindowsErr(0);
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Py_RETURN_NONE;
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}
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static PyObject *
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win32_closesocket(PyObject *self, PyObject *args)
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{
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HANDLE handle;
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int ret;
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if (!PyArg_ParseTuple(args, F_HANDLE ":closesocket" , &handle))
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return NULL;
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Py_BEGIN_ALLOW_THREADS
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ret = closesocket((SOCKET) handle);
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Py_END_ALLOW_THREADS
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if (ret)
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return PyErr_SetExcFromWindowsErr(PyExc_IOError, WSAGetLastError());
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Py_RETURN_NONE;
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}
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static PyObject *
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win32_recv(PyObject *self, PyObject *args)
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{
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HANDLE handle;
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int size, nread;
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PyObject *buf;
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if (!PyArg_ParseTuple(args, F_HANDLE "i:recv" , &handle, &size))
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return NULL;
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buf = PyBytes_FromStringAndSize(NULL, size);
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if (!buf)
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return NULL;
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Py_BEGIN_ALLOW_THREADS
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nread = recv((SOCKET) handle, PyBytes_AS_STRING(buf), size, 0);
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Py_END_ALLOW_THREADS
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if (nread < 0) {
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Py_DECREF(buf);
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return PyErr_SetExcFromWindowsErr(PyExc_IOError, WSAGetLastError());
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}
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_PyBytes_Resize(&buf, nread);
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return buf;
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}
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static PyObject *
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win32_send(PyObject *self, PyObject *args)
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{
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HANDLE handle;
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Py_buffer buf;
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int ret;
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if (!PyArg_ParseTuple(args, F_HANDLE "y*:send" , &handle, &buf))
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return NULL;
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Py_BEGIN_ALLOW_THREADS
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ret = send((SOCKET) handle, buf.buf, buf.len, 0);
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Py_END_ALLOW_THREADS
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PyBuffer_Release(&buf);
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if (ret < 0)
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return PyErr_SetExcFromWindowsErr(PyExc_IOError, WSAGetLastError());
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return PyLong_FromLong(ret);
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}
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static PyObject *
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win32_WriteFile(PyObject *self, PyObject *args, PyObject *kwds)
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{
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HANDLE handle;
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Py_buffer _buf, *buf;
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PyObject *bufobj;
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int written;
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BOOL ret;
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int use_overlapped = 0;
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OverlappedObject *overlapped = NULL;
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static char *kwlist[] = {"handle", "buffer", "overlapped", NULL};
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/* First get handle and use_overlapped to know which Py_buffer to use */
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if (!PyArg_ParseTupleAndKeywords(args, kwds,
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F_HANDLE "O|i:WriteFile", kwlist,
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&handle, &bufobj, &use_overlapped))
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return NULL;
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if (use_overlapped) {
|
|
overlapped = new_overlapped(handle);
|
|
if (!overlapped)
|
|
return NULL;
|
|
buf = &overlapped->write_buffer;
|
|
}
|
|
else
|
|
buf = &_buf;
|
|
|
|
if (!PyArg_Parse(bufobj, "y*", buf)) {
|
|
Py_XDECREF(overlapped);
|
|
return NULL;
|
|
}
|
|
|
|
Py_BEGIN_ALLOW_THREADS
|
|
ret = WriteFile(handle, buf->buf, buf->len, &written,
|
|
overlapped ? &overlapped->overlapped : NULL);
|
|
Py_END_ALLOW_THREADS
|
|
|
|
if (overlapped) {
|
|
int err = GetLastError();
|
|
if (!ret) {
|
|
if (err == ERROR_IO_PENDING)
|
|
overlapped->pending = 1;
|
|
else {
|
|
Py_DECREF(overlapped);
|
|
return PyErr_SetExcFromWindowsErr(PyExc_IOError, 0);
|
|
}
|
|
}
|
|
return (PyObject *) overlapped;
|
|
}
|
|
|
|
PyBuffer_Release(buf);
|
|
if (!ret)
|
|
return PyErr_SetExcFromWindowsErr(PyExc_IOError, 0);
|
|
return PyLong_FromLong(written);
|
|
}
|
|
|
|
static PyObject *
|
|
win32_ReadFile(PyObject *self, PyObject *args, PyObject *kwds)
|
|
{
|
|
HANDLE handle;
|
|
int size;
|
|
DWORD nread;
|
|
PyObject *buf;
|
|
BOOL ret;
|
|
int use_overlapped = 0;
|
|
OverlappedObject *overlapped = NULL;
|
|
static char *kwlist[] = {"handle", "size", "overlapped", NULL};
|
|
|
|
if (!PyArg_ParseTupleAndKeywords(args, kwds,
|
|
F_HANDLE "i|i:ReadFile", kwlist,
|
|
&handle, &size, &use_overlapped))
|
|
return NULL;
|
|
|
|
buf = PyBytes_FromStringAndSize(NULL, size);
|
|
if (!buf)
|
|
return NULL;
|
|
if (use_overlapped) {
|
|
overlapped = new_overlapped(handle);
|
|
if (!overlapped) {
|
|
Py_DECREF(buf);
|
|
return NULL;
|
|
}
|
|
/* Steals reference to buf */
|
|
overlapped->read_buffer = buf;
|
|
}
|
|
|
|
Py_BEGIN_ALLOW_THREADS
|
|
ret = ReadFile(handle, PyBytes_AS_STRING(buf), size, &nread,
|
|
overlapped ? &overlapped->overlapped : NULL);
|
|
Py_END_ALLOW_THREADS
|
|
|
|
if (overlapped) {
|
|
int err = GetLastError();
|
|
if (!ret) {
|
|
if (err == ERROR_IO_PENDING)
|
|
overlapped->pending = 1;
|
|
else if (err != ERROR_MORE_DATA) {
|
|
Py_DECREF(overlapped);
|
|
return PyErr_SetExcFromWindowsErr(PyExc_IOError, 0);
|
|
}
|
|
}
|
|
return (PyObject *) overlapped;
|
|
}
|
|
|
|
if (!ret && GetLastError() != ERROR_MORE_DATA) {
|
|
Py_DECREF(buf);
|
|
return PyErr_SetExcFromWindowsErr(PyExc_IOError, 0);
|
|
}
|
|
if (_PyBytes_Resize(&buf, nread))
|
|
return NULL;
|
|
return Py_BuildValue("NN", buf, PyBool_FromLong(ret));
|
|
}
|
|
|
|
static PyObject *
|
|
win32_PeekNamedPipe(PyObject *self, PyObject *args)
|
|
{
|
|
HANDLE handle;
|
|
int size = 0;
|
|
PyObject *buf = NULL;
|
|
DWORD nread, navail, nleft;
|
|
BOOL ret;
|
|
|
|
if (!PyArg_ParseTuple(args, F_HANDLE "|i:PeekNamedPipe" , &handle, &size))
|
|
return NULL;
|
|
|
|
if (size < 0) {
|
|
PyErr_SetString(PyExc_ValueError, "negative size");
|
|
return NULL;
|
|
}
|
|
|
|
if (size) {
|
|
buf = PyBytes_FromStringAndSize(NULL, size);
|
|
if (!buf)
|
|
return NULL;
|
|
Py_BEGIN_ALLOW_THREADS
|
|
ret = PeekNamedPipe(handle, PyBytes_AS_STRING(buf), size, &nread,
|
|
&navail, &nleft);
|
|
Py_END_ALLOW_THREADS
|
|
if (!ret) {
|
|
Py_DECREF(buf);
|
|
return PyErr_SetExcFromWindowsErr(PyExc_IOError, 0);
|
|
}
|
|
if (_PyBytes_Resize(&buf, nread))
|
|
return NULL;
|
|
return Py_BuildValue("Nii", buf, navail, nleft);
|
|
}
|
|
else {
|
|
Py_BEGIN_ALLOW_THREADS
|
|
ret = PeekNamedPipe(handle, NULL, 0, NULL, &navail, &nleft);
|
|
Py_END_ALLOW_THREADS
|
|
if (!ret) {
|
|
return PyErr_SetExcFromWindowsErr(PyExc_IOError, 0);
|
|
}
|
|
return Py_BuildValue("ii", navail, nleft);
|
|
}
|
|
}
|
|
|
|
static PyObject *
|
|
win32_WaitForMultipleObjects(PyObject* self, PyObject* args)
|
|
{
|
|
DWORD result;
|
|
PyObject *handle_seq;
|
|
HANDLE handles[MAXIMUM_WAIT_OBJECTS];
|
|
Py_ssize_t nhandles, i;
|
|
int wait_flag;
|
|
int milliseconds = INFINITE;
|
|
|
|
if (!PyArg_ParseTuple(args, "Oi|i:WaitForMultipleObjects",
|
|
&handle_seq, &wait_flag, &milliseconds))
|
|
return NULL;
|
|
|
|
if (!PySequence_Check(handle_seq)) {
|
|
PyErr_Format(PyExc_TypeError,
|
|
"sequence type expected, got '%s'",
|
|
Py_TYPE(handle_seq)->tp_doc);
|
|
return NULL;
|
|
}
|
|
nhandles = PySequence_Length(handle_seq);
|
|
if (nhandles == -1)
|
|
return NULL;
|
|
if (nhandles < 0 || nhandles >= MAXIMUM_WAIT_OBJECTS) {
|
|
PyErr_Format(PyExc_ValueError,
|
|
"need at most %zd handles, got a sequence of length %zd",
|
|
MAXIMUM_WAIT_OBJECTS, nhandles);
|
|
return NULL;
|
|
}
|
|
for (i = 0; i < nhandles; i++) {
|
|
HANDLE h;
|
|
PyObject *v = PySequence_GetItem(handle_seq, i);
|
|
if (v == NULL)
|
|
return NULL;
|
|
if (!PyArg_Parse(v, F_HANDLE, &h))
|
|
return NULL;
|
|
handles[i] = h;
|
|
}
|
|
|
|
Py_BEGIN_ALLOW_THREADS
|
|
result = WaitForMultipleObjects((DWORD) nhandles, handles,
|
|
(BOOL) wait_flag, (DWORD) milliseconds);
|
|
Py_END_ALLOW_THREADS
|
|
|
|
if (result == WAIT_FAILED)
|
|
return PyErr_SetExcFromWindowsErr(PyExc_IOError, 0);
|
|
|
|
return PyLong_FromLong((int) result);
|
|
}
|
|
|
|
|
|
static PyMethodDef win32_methods[] = {
|
|
WIN32_FUNCTION(CloseHandle),
|
|
WIN32_FUNCTION(GetLastError),
|
|
WIN32_FUNCTION(OpenProcess),
|
|
WIN32_FUNCTION(ExitProcess),
|
|
WIN32_KWARGS_FUNCTION(ConnectNamedPipe),
|
|
WIN32_FUNCTION(CreateFile),
|
|
WIN32_FUNCTION(CreateNamedPipe),
|
|
WIN32_KWARGS_FUNCTION(ReadFile),
|
|
WIN32_FUNCTION(PeekNamedPipe),
|
|
WIN32_FUNCTION(SetNamedPipeHandleState),
|
|
WIN32_FUNCTION(WaitForMultipleObjects),
|
|
WIN32_FUNCTION(WaitNamedPipe),
|
|
WIN32_KWARGS_FUNCTION(WriteFile),
|
|
WIN32_FUNCTION(closesocket),
|
|
WIN32_FUNCTION(recv),
|
|
WIN32_FUNCTION(send),
|
|
{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);
|
|
|
|
if (PyType_Ready(&OverlappedType) < 0)
|
|
return NULL;
|
|
PyDict_SetItemString(Win32Type.tp_dict, "Overlapped",
|
|
(PyObject *) &OverlappedType);
|
|
|
|
WIN32_CONSTANT(F_DWORD, ERROR_ALREADY_EXISTS);
|
|
WIN32_CONSTANT(F_DWORD, ERROR_BROKEN_PIPE);
|
|
WIN32_CONSTANT(F_DWORD, ERROR_NO_SYSTEM_RESOURCES);
|
|
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, FILE_FLAG_OVERLAPPED);
|
|
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;
|
|
}
|