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-rw-r--r--Modules/_multiprocessing/connection.h527
1 files changed, 0 insertions, 527 deletions
diff --git a/Modules/_multiprocessing/connection.h b/Modules/_multiprocessing/connection.h
deleted file mode 100644
index 002d5aa..0000000
--- a/Modules/_multiprocessing/connection.h
+++ /dev/null
@@ -1,527 +0,0 @@
-/*
- * 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)
-{
- Py_buffer pbuffer;
- 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,
- &pbuffer, &offset, &size))
- return NULL;
- buffer = pbuffer.buf;
- length = pbuffer.len;
-
- CHECK_WRITABLE(self); /* XXX release buffer in case of failure */
-
- if (offset < 0) {
- PyBuffer_Release(&pbuffer);
- PyErr_SetString(PyExc_ValueError, "offset is negative");
- return NULL;
- }
- if (length < offset) {
- PyBuffer_Release(&pbuffer);
- PyErr_SetString(PyExc_ValueError, "buffer length < offset");
- return NULL;
- }
-
- if (size == PY_SSIZE_T_MIN) {
- size = length - offset;
- } else {
- if (size < 0) {
- PyBuffer_Release(&pbuffer);
- PyErr_SetString(PyExc_ValueError, "size is negative");
- return NULL;
- }
- if (offset + size > length) {
- PyBuffer_Release(&pbuffer);
- PyErr_SetString(PyExc_ValueError,
- "buffer length < offset + size");
- return NULL;
- }
- }
-
- res = conn_send_string(self, buffer + offset, size);
-
- PyBuffer_Release(&pbuffer);
- 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 = PyBytes_FromStringAndSize(self->buffer, res);
- } else {
- result = PyBytes_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 (PyBytes_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 = PyBytes_FromStringAndSize(self->buffer, res);
- } else {
- temp = PyBytes_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_reserved */ 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 */