kicad/thirdparty/pybind11/tests/cross_module_gil_utils.cpp

65 lines
1.7 KiB
C++

/*
tests/cross_module_gil_utils.cpp -- tools for acquiring GIL from a different module
Copyright (c) 2019 Google LLC
All rights reserved. Use of this source code is governed by a
BSD-style license that can be found in the LICENSE file.
*/
#include <pybind11/pybind11.h>
#include <cstdint>
// This file mimics a DSO that makes pybind11 calls but does not define a
// PYBIND11_MODULE. The purpose is to test that such a DSO can create a
// py::gil_scoped_acquire when the running thread is in a GIL-released state.
//
// Note that we define a Python module here for convenience, but in general
// this need not be the case. The typical scenario would be a DSO that implements
// shared logic used internally by multiple pybind11 modules.
namespace {
namespace py = pybind11;
void gil_acquire() { py::gil_scoped_acquire gil; }
constexpr char kModuleName[] = "cross_module_gil_utils";
#if PY_MAJOR_VERSION >= 3
struct PyModuleDef moduledef
= {PyModuleDef_HEAD_INIT, kModuleName, NULL, 0, NULL, NULL, NULL, NULL, NULL};
#else
PyMethodDef module_methods[] = {{NULL, NULL, 0, NULL}};
#endif
} // namespace
extern "C" PYBIND11_EXPORT
#if PY_MAJOR_VERSION >= 3
PyObject *
PyInit_cross_module_gil_utils()
#else
void
initcross_module_gil_utils()
#endif
{
PyObject *m =
#if PY_MAJOR_VERSION >= 3
PyModule_Create(&moduledef);
#else
Py_InitModule(kModuleName, module_methods);
#endif
if (m != NULL) {
static_assert(sizeof(&gil_acquire) == sizeof(void *),
"Function pointer must have the same size as void*");
PyModule_AddObject(
m, "gil_acquire_funcaddr", PyLong_FromVoidPtr(reinterpret_cast<void *>(&gil_acquire)));
}
#if PY_MAJOR_VERSION >= 3
return m;
#endif
}