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37 lines
1.1 KiB
37 lines
1.1 KiB
/*
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example/example13.cpp -- keep_alive modifier (pybind11's version
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of Boost.Python's with_custodian_and_ward / with_custodian_and_ward_postcall)
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Copyright (c) 2015 Wenzel Jakob <wenzel@inf.ethz.ch>
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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 "example.h"
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class Child {
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public:
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Child() { std::cout << "Allocating child." << std::endl; }
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~Child() { std::cout << "Releasing child." << std::endl; }
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};
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class Parent {
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public:
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Parent() { std::cout << "Allocating parent." << std::endl; }
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~Parent() { std::cout << "Releasing parent." << std::endl; }
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void addChild(Child *) { }
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Child *returnChild() { return new Child(); }
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};
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void init_ex13(py::module &m) {
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py::class_<Parent>(m, "Parent")
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.def(py::init<>())
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.def("addChild", &Parent::addChild)
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.def("addChildKeepAlive", &Parent::addChild, py::keep_alive<1, 2>())
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.def("returnChild", &Parent::returnChild)
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.def("returnChildKeepAlive", &Parent::returnChild, py::keep_alive<1, 0>());
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py::class_<Child>(m, "Child")
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.def(py::init<>());
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}
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