[WIP] - Towards Billiard 5.0

Modules/_billiard/clinic/posixshmem.c.h

@@ -0,0 +1,123 @@
+/*[clinic input]
+preserve
+[clinic start generated code]*/
+
+#if defined(HAVE_SHM_OPEN)
+
+PyDoc_STRVAR(_posixshmem_shm_open__doc__,
+"shm_open($module, /, path, flags, mode=511)\n"
+"--\n"
+"\n"
+"Open a shared memory object.  Returns a file descriptor (integer).");
+
+#define _POSIXSHMEM_SHM_OPEN_METHODDEF    \
+    {"shm_open", (PyCFunction)(void(*)(void))_posixshmem_shm_open, METH_FASTCALL|METH_KEYWORDS, _posixshmem_shm_open__doc__},
+
+static int
+_posixshmem_shm_open_impl(PyObject *module, PyObject *path, int flags,
+                          int mode);
+
+static PyObject *
+_posixshmem_shm_open(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    static const char * const _keywords[] = {"path", "flags", "mode", NULL};
+    static _PyArg_Parser _parser = {NULL, _keywords, "shm_open", 0};
+    PyObject *argsbuf[3];
+    Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 2;
+    PyObject *path;
+    int flags;
+    int mode = 511;
+    int _return_value;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 2, 3, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    if (!PyUnicode_Check(args[0])) {
+        _PyArg_BadArgument("shm_open", "argument 'path'", "str", args[0]);
+        goto exit;
+    }
+    if (PyUnicode_READY(args[0]) == -1) {
+        goto exit;
+    }
+    path = args[0];
+    flags = _PyLong_AsInt(args[1]);
+    if (flags == -1 && PyErr_Occurred()) {
+        goto exit;
+    }
+    if (!noptargs) {
+        goto skip_optional_pos;
+    }
+    mode = _PyLong_AsInt(args[2]);
+    if (mode == -1 && PyErr_Occurred()) {
+        goto exit;
+    }
+skip_optional_pos:
+    _return_value = _posixshmem_shm_open_impl(module, path, flags, mode);
+    if ((_return_value == -1) && PyErr_Occurred()) {
+        goto exit;
+    }
+    return_value = PyLong_FromLong((long)_return_value);
+
+exit:
+    return return_value;
+}
+
+#endif /* defined(HAVE_SHM_OPEN) */
+
+#if defined(HAVE_SHM_UNLINK)
+
+PyDoc_STRVAR(_posixshmem_shm_unlink__doc__,
+"shm_unlink($module, /, path)\n"
+"--\n"
+"\n"
+"Remove a shared memory object (similar to unlink()).\n"
+"\n"
+"Remove a shared memory object name, and, once all processes  have  unmapped\n"
+"the object, de-allocates and destroys the contents of the associated memory\n"
+"region.");
+
+#define _POSIXSHMEM_SHM_UNLINK_METHODDEF    \
+    {"shm_unlink", (PyCFunction)(void(*)(void))_posixshmem_shm_unlink, METH_FASTCALL|METH_KEYWORDS, _posixshmem_shm_unlink__doc__},
+
+static PyObject *
+_posixshmem_shm_unlink_impl(PyObject *module, PyObject *path);
+
+static PyObject *
+_posixshmem_shm_unlink(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    static const char * const _keywords[] = {"path", NULL};
+    static _PyArg_Parser _parser = {NULL, _keywords, "shm_unlink", 0};
+    PyObject *argsbuf[1];
+    PyObject *path;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 1, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    if (!PyUnicode_Check(args[0])) {
+        _PyArg_BadArgument("shm_unlink", "argument 'path'", "str", args[0]);
+        goto exit;
+    }
+    if (PyUnicode_READY(args[0]) == -1) {
+        goto exit;
+    }
+    path = args[0];
+    return_value = _posixshmem_shm_unlink_impl(module, path);
+
+exit:
+    return return_value;
+}
+
+#endif /* defined(HAVE_SHM_UNLINK) */
+
+#ifndef _POSIXSHMEM_SHM_OPEN_METHODDEF
+    #define _POSIXSHMEM_SHM_OPEN_METHODDEF
+#endif /* !defined(_POSIXSHMEM_SHM_OPEN_METHODDEF) */
+
+#ifndef _POSIXSHMEM_SHM_UNLINK_METHODDEF
+    #define _POSIXSHMEM_SHM_UNLINK_METHODDEF
+#endif /* !defined(_POSIXSHMEM_SHM_UNLINK_METHODDEF) */
+/*[clinic end generated code: output=bca8e78d0f43ef1a input=a9049054013a1b77]*/