d-mercator/python/pybind11/tests/test_thread.cpp at main · networkgeometry/d-mercator · GitHub

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tests/test_thread.cpp -- call pybind11 bound methods in threads

BSD-style license that can be found in the LICENSE file.

#include <pybind11/cast.h>

#include <pybind11/pybind11.h>

#include "pybind11_tests.h"

#include <chrono>

#include <thread>

namespace py = pybind11;

namespace {

struct IntStruct {

explicit IntStruct(int v) : value(v){};

~IntStruct() { value = -value; }

IntStruct(const IntStruct &) = default;

IntStruct &operator=(const IntStruct &) = default;

int value;

};

} // namespace

TEST_SUBMODULE(thread, m) {

py::class_<IntStruct>(m, "IntStruct").def(py::init([](const int i) { return IntStruct(i); }));

// implicitly_convertible uses loader_life_support when an implicit

// conversion is required in order to lifetime extend the reference.

// This test should be run with ASAN for better effectiveness.

py::implicitly_convertible<int, IntStruct>();

m.def("test", [](int expected, const IntStruct &in) {

{

py::gil_scoped_release release;

std::this_thread::sleep_for(std::chrono::milliseconds(5));

}

if (in.value != expected) {

throw std::runtime_error("Value changed!!");

}

});

m.def(

"test_no_gil",

[](int expected, const IntStruct &in) {

std::this_thread::sleep_for(std::chrono::milliseconds(5));

if (in.value != expected) {

throw std::runtime_error("Value changed!!");

}

py::call_guard<py::gil_scoped_release>());

// NOTE: std::string_view also uses loader_life_support to ensure that

// the string contents remain alive, but that's a C++ 17 feature.

}

d-mercator/python/pybind11/tests/test_thread.cpp at main · networkgeometry/d-mercator · GitHub

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