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