mirror of
https://github.com/pybind/pybind11.git
synced 2024-11-25 06:35:12 +00:00
improved shared pointer support (fixes #14)
This commit is contained in:
parent
5e90fa4e6a
commit
6e213c9ca0
@ -457,6 +457,14 @@ be declared at the top level before any binding code:
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demonstrates how to work with custom reference-counting holder types in
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more detail.
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.. warning::
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To ensure correct reference counting among Python and C++, the use of
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``std::shared_ptr<T>`` as a holder type requires that ``T`` inherits from
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``std::enable_shared_from_this<T>`` (see cppreference_ for details).
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.. _cppreference: http://en.cppreference.com/w/cpp/memory/enable_shared_from_this
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.. _custom_constructors:
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Custom constructors
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@ -31,14 +31,36 @@ private:
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int value;
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};
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class MyObject2 : public std::enable_shared_from_this<MyObject2> {
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public:
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MyObject2(int value) : value(value) {
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std::cout << toString() << " constructor" << std::endl;
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}
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std::string toString() const {
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return "MyObject2[" + std::to_string(value) + "]";
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}
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virtual ~MyObject2() {
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std::cout << toString() << " destructor" << std::endl;
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}
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private:
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int value;
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};
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/// Make pybind aware of the ref-counted wrapper type
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PYBIND11_DECLARE_HOLDER_TYPE(T, ref<T>);
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PYBIND11_DECLARE_HOLDER_TYPE(T, std::shared_ptr<T>);
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Object *make_object_1() { return new MyObject(1); }
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ref<Object> make_object_2() { return new MyObject(2); }
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MyObject *make_myobject_4() { return new MyObject(4); }
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ref<MyObject> make_myobject_5() { return new MyObject(5); }
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MyObject2 *make_myobject2_1() { return new MyObject2(1); }
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std::shared_ptr<MyObject2> make_myobject2_2() { return std::make_shared<MyObject2>(2); }
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void print_object_1(const Object *obj) { std::cout << obj->toString() << std::endl; }
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void print_object_2(ref<Object> obj) { std::cout << obj->toString() << std::endl; }
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void print_object_3(const ref<Object> &obj) { std::cout << obj->toString() << std::endl; }
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@ -49,6 +71,11 @@ void print_myobject_2(ref<MyObject> obj) { std::cout << obj->toString() << std::
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void print_myobject_3(const ref<MyObject> &obj) { std::cout << obj->toString() << std::endl; }
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void print_myobject_4(const ref<MyObject> *obj) { std::cout << (*obj)->toString() << std::endl; }
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void print_myobject2_1(const MyObject2 *obj) { std::cout << obj->toString() << std::endl; }
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void print_myobject2_2(std::shared_ptr<MyObject2> obj) { std::cout << obj->toString() << std::endl; }
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void print_myobject2_3(const std::shared_ptr<MyObject2> &obj) { std::cout << obj->toString() << std::endl; }
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void print_myobject2_4(const std::shared_ptr<MyObject2> *obj) { std::cout << (*obj)->toString() << std::endl; }
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void init_ex8(py::module &m) {
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py::class_<Object, ref<Object>> obj(m, "Object");
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obj.def("getRefCount", &Object::getRefCount);
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@ -69,5 +96,14 @@ void init_ex8(py::module &m) {
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m.def("print_myobject_3", &print_myobject_3);
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m.def("print_myobject_4", &print_myobject_4);
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py::class_<MyObject2, std::shared_ptr<MyObject2>>(m, "MyObject2")
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.def(py::init<int>());
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m.def("make_myobject2_1", &make_myobject2_1);
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m.def("make_myobject2_2", &make_myobject2_2);
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m.def("print_myobject2_1", &print_myobject2_1);
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m.def("print_myobject2_2", &print_myobject2_2);
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m.def("print_myobject2_3", &print_myobject2_3);
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m.def("print_myobject2_4", &print_myobject2_4);
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py::implicitly_convertible<py::int_, MyObject>();
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}
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@ -8,6 +8,8 @@ from example import make_object_1
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from example import make_object_2
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from example import make_myobject_4
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from example import make_myobject_5
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from example import make_myobject2_1
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from example import make_myobject2_2
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from example import print_object_1
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from example import print_object_2
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from example import print_object_3
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@ -16,6 +18,10 @@ from example import print_myobject_1
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from example import print_myobject_2
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from example import print_myobject_3
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from example import print_myobject_4
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from example import print_myobject2_1
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from example import print_myobject2_2
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from example import print_myobject2_3
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from example import print_myobject2_4
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for o in [make_object_1(), make_object_2(), MyObject(3)]:
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print("Reference count = %i" % o.getRefCount())
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@ -35,3 +41,11 @@ for o in [make_myobject_4(), make_myobject_5(), MyObject(6), 7]:
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print_myobject_2(o)
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print_myobject_3(o)
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print_myobject_4(o)
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for o in [make_myobject2_1(), make_myobject2_2()]:
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print(o)
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print_myobject2_1(o)
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print_myobject2_2(o)
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print_myobject2_3(o)
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print_myobject2_4(o)
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@ -1,261 +1,275 @@
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MyObject[1] constructor
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Initialized ref from pointer 0x7ff7d9742750
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Initialized ref from pointer 0x7ffdb2c16a50
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MyObject[2] constructor
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Initialized ref from pointer 0x7ff7d9742150
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Initialized ref from pointer 0x7ff7d9742150
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Destructing ref 0x7ff7d9742150
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Initialized ref from pointer 0x7ffdb2c167a0
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Initialized ref from pointer 0x7ffdb2c167a0
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Destructing ref 0x7ffdb2c167a0
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MyObject[3] constructor
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Initialized ref from pointer 0x7ff7d9741800
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Initialized ref from pointer 0x7ffdb2c17420
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Reference count = 1
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MyObject[1]
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Created empty ref
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Initialized ref from pointer 0x7ff7d9742750
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Move-assigning ref 0x7ff7d9742750
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Initialized ref from pointer 0x7ffdb2c16a50
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Move-assigning ref 0x7ffdb2c16a50
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Destructing ref 0x0
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Initialized ref from ref 0x7ff7d9742750
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Initialized ref from ref 0x7ffdb2c16a50
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MyObject[1]
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Destructing ref 0x7ff7d9742750
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Destructing ref 0x7ff7d9742750
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Destructing ref 0x7ffdb2c16a50
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Destructing ref 0x7ffdb2c16a50
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Created empty ref
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Initialized ref from pointer 0x7ff7d9742750
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Move-assigning ref 0x7ff7d9742750
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Initialized ref from pointer 0x7ffdb2c16a50
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Move-assigning ref 0x7ffdb2c16a50
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Destructing ref 0x0
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MyObject[1]
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Destructing ref 0x7ff7d9742750
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Destructing ref 0x7ffdb2c16a50
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Created empty ref
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Initialized ref from pointer 0x7ff7d9742750
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Move-assigning ref 0x7ff7d9742750
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Initialized ref from pointer 0x7ffdb2c16a50
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Move-assigning ref 0x7ffdb2c16a50
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Destructing ref 0x0
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MyObject[1]
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Destructing ref 0x7ff7d9742750
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Destructing ref 0x7ffdb2c16a50
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Reference count = 1
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MyObject[2]
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Created empty ref
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Initialized ref from pointer 0x7ff7d9742150
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Move-assigning ref 0x7ff7d9742150
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Initialized ref from pointer 0x7ffdb2c167a0
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Move-assigning ref 0x7ffdb2c167a0
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Destructing ref 0x0
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Initialized ref from ref 0x7ff7d9742150
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Initialized ref from ref 0x7ffdb2c167a0
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MyObject[2]
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Destructing ref 0x7ff7d9742150
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Destructing ref 0x7ff7d9742150
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Destructing ref 0x7ffdb2c167a0
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Destructing ref 0x7ffdb2c167a0
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Created empty ref
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Initialized ref from pointer 0x7ff7d9742150
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Move-assigning ref 0x7ff7d9742150
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Initialized ref from pointer 0x7ffdb2c167a0
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Move-assigning ref 0x7ffdb2c167a0
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Destructing ref 0x0
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MyObject[2]
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Destructing ref 0x7ff7d9742150
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Destructing ref 0x7ffdb2c167a0
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Created empty ref
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Initialized ref from pointer 0x7ff7d9742150
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Move-assigning ref 0x7ff7d9742150
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Initialized ref from pointer 0x7ffdb2c167a0
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Move-assigning ref 0x7ffdb2c167a0
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Destructing ref 0x0
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MyObject[2]
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Destructing ref 0x7ff7d9742150
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Destructing ref 0x7ffdb2c167a0
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Reference count = 1
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MyObject[3]
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Created empty ref
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Initialized ref from pointer 0x7ff7d9741800
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Move-assigning ref 0x7ff7d9741800
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Initialized ref from pointer 0x7ffdb2c17420
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Move-assigning ref 0x7ffdb2c17420
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Destructing ref 0x0
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Initialized ref from ref 0x7ff7d9741800
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Initialized ref from ref 0x7ffdb2c17420
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MyObject[3]
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Destructing ref 0x7ff7d9741800
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Destructing ref 0x7ff7d9741800
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Destructing ref 0x7ffdb2c17420
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Destructing ref 0x7ffdb2c17420
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Created empty ref
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Initialized ref from pointer 0x7ff7d9741800
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Move-assigning ref 0x7ff7d9741800
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Initialized ref from pointer 0x7ffdb2c17420
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Move-assigning ref 0x7ffdb2c17420
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Destructing ref 0x0
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MyObject[3]
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Destructing ref 0x7ff7d9741800
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Destructing ref 0x7ffdb2c17420
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Created empty ref
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Initialized ref from pointer 0x7ff7d9741800
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Move-assigning ref 0x7ff7d9741800
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Initialized ref from pointer 0x7ffdb2c17420
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Move-assigning ref 0x7ffdb2c17420
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Destructing ref 0x0
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MyObject[3]
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Destructing ref 0x7ff7d9741800
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Destructing ref 0x7ff7d9742150
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Destructing ref 0x7ffdb2c17420
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Destructing ref 0x7ffdb2c167a0
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MyObject[2] destructor
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Destructing ref 0x7ff7d9742750
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Destructing ref 0x7ffdb2c16a50
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MyObject[1] destructor
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MyObject[4] constructor
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Initialized ref from pointer 0x7ff7d9742750
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Initialized ref from pointer 0x7ffdb2c16a50
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MyObject[5] constructor
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Initialized ref from pointer 0x7ff7d9742150
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Initialized ref from pointer 0x7ff7d9742150
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Destructing ref 0x7ff7d9742150
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Initialized ref from pointer 0x7ffdb2c167a0
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Initialized ref from pointer 0x7ffdb2c167a0
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Destructing ref 0x7ffdb2c167a0
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MyObject[6] constructor
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Initialized ref from pointer 0x7ff7d9741cf0
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Destructing ref 0x7ff7d9741800
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Initialized ref from pointer 0x7ffdb2c161d0
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Destructing ref 0x7ffdb2c17420
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MyObject[3] destructor
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<example.MyObject object at 0x10297a360>
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<example.MyObject object at 0x10cf67600>
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MyObject[4]
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Created empty ref
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Initialized ref from pointer 0x7ff7d9742750
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Move-assigning ref 0x7ff7d9742750
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Initialized ref from pointer 0x7ffdb2c16a50
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Move-assigning ref 0x7ffdb2c16a50
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Destructing ref 0x0
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Initialized ref from ref 0x7ff7d9742750
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Initialized ref from ref 0x7ffdb2c16a50
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MyObject[4]
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Destructing ref 0x7ff7d9742750
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Destructing ref 0x7ff7d9742750
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Destructing ref 0x7ffdb2c16a50
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Destructing ref 0x7ffdb2c16a50
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Created empty ref
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Initialized ref from pointer 0x7ff7d9742750
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Move-assigning ref 0x7ff7d9742750
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Initialized ref from pointer 0x7ffdb2c16a50
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Move-assigning ref 0x7ffdb2c16a50
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Destructing ref 0x0
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MyObject[4]
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Destructing ref 0x7ff7d9742750
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Destructing ref 0x7ffdb2c16a50
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Created empty ref
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Initialized ref from pointer 0x7ff7d9742750
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Move-assigning ref 0x7ff7d9742750
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Initialized ref from pointer 0x7ffdb2c16a50
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Move-assigning ref 0x7ffdb2c16a50
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Destructing ref 0x0
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MyObject[4]
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Destructing ref 0x7ff7d9742750
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Destructing ref 0x7ffdb2c16a50
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MyObject[4]
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Created empty ref
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Initialized ref from pointer 0x7ff7d9742750
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Move-assigning ref 0x7ff7d9742750
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Initialized ref from pointer 0x7ffdb2c16a50
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Move-assigning ref 0x7ffdb2c16a50
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Destructing ref 0x0
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Initialized ref from ref 0x7ff7d9742750
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Initialized ref from ref 0x7ffdb2c16a50
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MyObject[4]
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Destructing ref 0x7ff7d9742750
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Destructing ref 0x7ff7d9742750
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Destructing ref 0x7ffdb2c16a50
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Destructing ref 0x7ffdb2c16a50
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Created empty ref
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Initialized ref from pointer 0x7ff7d9742750
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Move-assigning ref 0x7ff7d9742750
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Initialized ref from pointer 0x7ffdb2c16a50
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Move-assigning ref 0x7ffdb2c16a50
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Destructing ref 0x0
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MyObject[4]
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Destructing ref 0x7ff7d9742750
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Destructing ref 0x7ffdb2c16a50
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Created empty ref
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Initialized ref from pointer 0x7ff7d9742750
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Move-assigning ref 0x7ff7d9742750
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Initialized ref from pointer 0x7ffdb2c16a50
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Move-assigning ref 0x7ffdb2c16a50
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Destructing ref 0x0
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MyObject[4]
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Destructing ref 0x7ff7d9742750
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<example.MyObject object at 0x10297a870>
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Destructing ref 0x7ffdb2c16a50
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<example.MyObject object at 0x10cf7d210>
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MyObject[5]
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Created empty ref
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Initialized ref from pointer 0x7ff7d9742150
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Move-assigning ref 0x7ff7d9742150
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Initialized ref from pointer 0x7ffdb2c167a0
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Move-assigning ref 0x7ffdb2c167a0
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Destructing ref 0x0
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Initialized ref from ref 0x7ff7d9742150
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Initialized ref from ref 0x7ffdb2c167a0
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MyObject[5]
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Destructing ref 0x7ff7d9742150
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Destructing ref 0x7ff7d9742150
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Destructing ref 0x7ffdb2c167a0
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Destructing ref 0x7ffdb2c167a0
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Created empty ref
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Initialized ref from pointer 0x7ff7d9742150
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Move-assigning ref 0x7ff7d9742150
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Initialized ref from pointer 0x7ffdb2c167a0
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Move-assigning ref 0x7ffdb2c167a0
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Destructing ref 0x0
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MyObject[5]
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Destructing ref 0x7ff7d9742150
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Destructing ref 0x7ffdb2c167a0
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Created empty ref
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Initialized ref from pointer 0x7ff7d9742150
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Move-assigning ref 0x7ff7d9742150
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Initialized ref from pointer 0x7ffdb2c167a0
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Move-assigning ref 0x7ffdb2c167a0
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Destructing ref 0x0
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MyObject[5]
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Destructing ref 0x7ff7d9742150
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Destructing ref 0x7ffdb2c167a0
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MyObject[5]
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Created empty ref
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Initialized ref from pointer 0x7ff7d9742150
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Move-assigning ref 0x7ff7d9742150
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Initialized ref from pointer 0x7ffdb2c167a0
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Move-assigning ref 0x7ffdb2c167a0
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Destructing ref 0x0
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Initialized ref from ref 0x7ff7d9742150
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Initialized ref from ref 0x7ffdb2c167a0
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MyObject[5]
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Destructing ref 0x7ff7d9742150
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Destructing ref 0x7ff7d9742150
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Destructing ref 0x7ffdb2c167a0
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Destructing ref 0x7ffdb2c167a0
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Created empty ref
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Initialized ref from pointer 0x7ff7d9742150
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Move-assigning ref 0x7ff7d9742150
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Initialized ref from pointer 0x7ffdb2c167a0
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Move-assigning ref 0x7ffdb2c167a0
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Destructing ref 0x0
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MyObject[5]
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Destructing ref 0x7ff7d9742150
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Destructing ref 0x7ffdb2c167a0
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Created empty ref
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Initialized ref from pointer 0x7ff7d9742150
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Move-assigning ref 0x7ff7d9742150
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Initialized ref from pointer 0x7ffdb2c167a0
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Move-assigning ref 0x7ffdb2c167a0
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Destructing ref 0x0
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MyObject[5]
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Destructing ref 0x7ff7d9742150
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<example.MyObject object at 0x10297a8d0>
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Destructing ref 0x7ffdb2c167a0
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<example.MyObject object at 0x10cf7d270>
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MyObject[6]
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Created empty ref
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Initialized ref from pointer 0x7ff7d9741cf0
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Move-assigning ref 0x7ff7d9741cf0
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Initialized ref from pointer 0x7ffdb2c161d0
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Move-assigning ref 0x7ffdb2c161d0
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Destructing ref 0x0
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Initialized ref from ref 0x7ff7d9741cf0
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Initialized ref from ref 0x7ffdb2c161d0
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MyObject[6]
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Destructing ref 0x7ff7d9741cf0
|
||||
Destructing ref 0x7ff7d9741cf0
|
||||
Destructing ref 0x7ffdb2c161d0
|
||||
Destructing ref 0x7ffdb2c161d0
|
||||
Created empty ref
|
||||
Initialized ref from pointer 0x7ff7d9741cf0
|
||||
Move-assigning ref 0x7ff7d9741cf0
|
||||
Initialized ref from pointer 0x7ffdb2c161d0
|
||||
Move-assigning ref 0x7ffdb2c161d0
|
||||
Destructing ref 0x0
|
||||
MyObject[6]
|
||||
Destructing ref 0x7ff7d9741cf0
|
||||
Destructing ref 0x7ffdb2c161d0
|
||||
Created empty ref
|
||||
Initialized ref from pointer 0x7ff7d9741cf0
|
||||
Move-assigning ref 0x7ff7d9741cf0
|
||||
Initialized ref from pointer 0x7ffdb2c161d0
|
||||
Move-assigning ref 0x7ffdb2c161d0
|
||||
Destructing ref 0x0
|
||||
MyObject[6]
|
||||
Destructing ref 0x7ff7d9741cf0
|
||||
Destructing ref 0x7ffdb2c161d0
|
||||
MyObject[6]
|
||||
Created empty ref
|
||||
Initialized ref from pointer 0x7ff7d9741cf0
|
||||
Move-assigning ref 0x7ff7d9741cf0
|
||||
Initialized ref from pointer 0x7ffdb2c161d0
|
||||
Move-assigning ref 0x7ffdb2c161d0
|
||||
Destructing ref 0x0
|
||||
Initialized ref from ref 0x7ff7d9741cf0
|
||||
Initialized ref from ref 0x7ffdb2c161d0
|
||||
MyObject[6]
|
||||
Destructing ref 0x7ff7d9741cf0
|
||||
Destructing ref 0x7ff7d9741cf0
|
||||
Destructing ref 0x7ffdb2c161d0
|
||||
Destructing ref 0x7ffdb2c161d0
|
||||
Created empty ref
|
||||
Initialized ref from pointer 0x7ff7d9741cf0
|
||||
Move-assigning ref 0x7ff7d9741cf0
|
||||
Initialized ref from pointer 0x7ffdb2c161d0
|
||||
Move-assigning ref 0x7ffdb2c161d0
|
||||
Destructing ref 0x0
|
||||
MyObject[6]
|
||||
Destructing ref 0x7ff7d9741cf0
|
||||
Destructing ref 0x7ffdb2c161d0
|
||||
Created empty ref
|
||||
Initialized ref from pointer 0x7ff7d9741cf0
|
||||
Move-assigning ref 0x7ff7d9741cf0
|
||||
Initialized ref from pointer 0x7ffdb2c161d0
|
||||
Move-assigning ref 0x7ffdb2c161d0
|
||||
Destructing ref 0x0
|
||||
MyObject[6]
|
||||
Destructing ref 0x7ff7d9741cf0
|
||||
Destructing ref 0x7ffdb2c161d0
|
||||
7
|
||||
MyObject[7] constructor
|
||||
Initialized ref from pointer 0x7ff7d9741800
|
||||
Initialized ref from pointer 0x7ffdb2c17420
|
||||
MyObject[7]
|
||||
Destructing ref 0x7ff7d9741800
|
||||
Destructing ref 0x7ffdb2c17420
|
||||
MyObject[7] destructor
|
||||
Created empty ref
|
||||
MyObject[7] constructor
|
||||
Initialized ref from pointer 0x7ff7d9741800
|
||||
Initialized ref from pointer 0x7ff7d9741800
|
||||
Move-assigning ref 0x7ff7d9741800
|
||||
Initialized ref from pointer 0x7ffdb2c17420
|
||||
Initialized ref from pointer 0x7ffdb2c17420
|
||||
Move-assigning ref 0x7ffdb2c17420
|
||||
Destructing ref 0x0
|
||||
Initialized ref from ref 0x7ff7d9741800
|
||||
Initialized ref from ref 0x7ffdb2c17420
|
||||
MyObject[7]
|
||||
Destructing ref 0x7ff7d9741800
|
||||
Destructing ref 0x7ff7d9741800
|
||||
Destructing ref 0x7ff7d9741800
|
||||
Destructing ref 0x7ffdb2c17420
|
||||
Destructing ref 0x7ffdb2c17420
|
||||
Destructing ref 0x7ffdb2c17420
|
||||
MyObject[7] destructor
|
||||
Created empty ref
|
||||
MyObject[7] constructor
|
||||
Initialized ref from pointer 0x7ff7d9741800
|
||||
Initialized ref from pointer 0x7ff7d9741800
|
||||
Move-assigning ref 0x7ff7d9741800
|
||||
Initialized ref from pointer 0x7ffdb2c17420
|
||||
Initialized ref from pointer 0x7ffdb2c17420
|
||||
Move-assigning ref 0x7ffdb2c17420
|
||||
Destructing ref 0x0
|
||||
MyObject[7]
|
||||
Destructing ref 0x7ff7d9741800
|
||||
Destructing ref 0x7ff7d9741800
|
||||
Destructing ref 0x7ffdb2c17420
|
||||
Destructing ref 0x7ffdb2c17420
|
||||
MyObject[7] destructor
|
||||
Created empty ref
|
||||
MyObject[7] constructor
|
||||
Initialized ref from pointer 0x7ff7d9741800
|
||||
Initialized ref from pointer 0x7ff7d9741800
|
||||
Move-assigning ref 0x7ff7d9741800
|
||||
Initialized ref from pointer 0x7ffdb2c17420
|
||||
Initialized ref from pointer 0x7ffdb2c17420
|
||||
Move-assigning ref 0x7ffdb2c17420
|
||||
Destructing ref 0x0
|
||||
MyObject[7]
|
||||
Destructing ref 0x7ff7d9741800
|
||||
Destructing ref 0x7ff7d9741800
|
||||
Destructing ref 0x7ffdb2c17420
|
||||
Destructing ref 0x7ffdb2c17420
|
||||
MyObject[7] destructor
|
||||
Destructing ref 0x7ff7d9741cf0
|
||||
Destructing ref 0x7ffdb2c161d0
|
||||
MyObject[6] destructor
|
||||
Destructing ref 0x7ff7d9742150
|
||||
Destructing ref 0x7ffdb2c167a0
|
||||
MyObject[5] destructor
|
||||
Destructing ref 0x7ff7d9742750
|
||||
Destructing ref 0x7ffdb2c16a50
|
||||
MyObject[4] destructor
|
||||
MyObject2[1] constructor
|
||||
MyObject2[2] constructor
|
||||
<example.MyObject2 object at 0x10cf5c378>
|
||||
MyObject2[1]
|
||||
MyObject2[1]
|
||||
MyObject2[1]
|
||||
MyObject2[1]
|
||||
<example.MyObject2 object at 0x10cf5c340>
|
||||
MyObject2[2]
|
||||
MyObject2[2]
|
||||
MyObject2[2]
|
||||
MyObject2[2]
|
||||
MyObject2[1] destructor
|
||||
MyObject2[2] destructor
|
||||
|
@ -517,12 +517,25 @@ protected:
|
||||
template <typename type, typename holder_type> class type_caster_holder : public type_caster<type> {
|
||||
public:
|
||||
typedef type_caster<type> parent;
|
||||
|
||||
template <typename T = holder_type,
|
||||
typename std::enable_if<std::is_same<std::shared_ptr<type>, T>::value, int>::type = 0>
|
||||
bool load(PyObject *src, bool convert) {
|
||||
if (!parent::load(src, convert))
|
||||
return false;
|
||||
holder = holder_type(((type *) parent::value)->shared_from_this());
|
||||
return true;
|
||||
}
|
||||
|
||||
template <typename T = holder_type,
|
||||
typename std::enable_if<!std::is_same<std::shared_ptr<type>, T>::value, int>::type = 0>
|
||||
bool load(PyObject *src, bool convert) {
|
||||
if (!parent::load(src, convert))
|
||||
return false;
|
||||
holder = holder_type((type *) parent::value);
|
||||
return true;
|
||||
}
|
||||
|
||||
explicit operator type*() { return this->value; }
|
||||
explicit operator type&() { return *(this->value); }
|
||||
explicit operator holder_type&() { return holder; }
|
||||
|
@ -798,11 +798,29 @@ public:
|
||||
return *this;
|
||||
}
|
||||
private:
|
||||
template <typename T = holder_type,
|
||||
typename std::enable_if<!std::is_same<std::shared_ptr<type>, T>::value, int>::type = 0>
|
||||
static void init_holder(PyObject *inst_) {
|
||||
instance_type *inst = (instance_type *) inst_;
|
||||
new (&inst->holder) holder_type(inst->value);
|
||||
inst->constructed = true;
|
||||
}
|
||||
|
||||
template <typename T = holder_type,
|
||||
typename std::enable_if<std::is_same<std::shared_ptr<type>, T>::value, int>::type = 0>
|
||||
static void init_holder(PyObject *inst_) {
|
||||
instance_type *inst = (instance_type *) inst_;
|
||||
try {
|
||||
new (&inst->holder) holder_type(
|
||||
inst->value->shared_from_this()
|
||||
);
|
||||
} catch (const std::bad_weak_ptr &) {
|
||||
new (&inst->holder) holder_type(inst->value);
|
||||
}
|
||||
inst->constructed = true;
|
||||
}
|
||||
|
||||
|
||||
static void dealloc(PyObject *inst_) {
|
||||
instance_type *inst = (instance_type *) inst_;
|
||||
if (inst->owned) {
|
||||
|
Loading…
Reference in New Issue
Block a user