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Shuffling code in test_smart_ptr.cpp to separate struct/class definitions from bindings code. Back-porting from smart_holder branch, to minimize diffs and potential for merge conflicts. (#2875)
Thanks Wenzel!
This commit is contained in:
Ralf W. Grosse-Kunstleve
GitHub
parent
74a767d429
commit
e2e819b2d8
@ -15,23 +15,7 @@
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#include "pybind11_tests.h"
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#include "object.h"
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// Make pybind aware of the ref-counted wrapper type (s):
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// ref<T> is a wrapper for 'Object' which uses intrusive reference counting
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// It is always possible to construct a ref<T> from an Object* pointer without
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// possible inconsistencies, hence the 'true' argument at the end.
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PYBIND11_DECLARE_HOLDER_TYPE(T, ref<T>, true);
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// Make pybind11 aware of the non-standard getter member function
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namespace pybind11 { namespace detail {
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template <typename T>
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struct holder_helper<ref<T>> {
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static const T *get(const ref<T> &p) { return p.get_ptr(); }
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};
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} // namespace detail
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} // namespace pybind11
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// The following is not required anymore for std::shared_ptr, but it should compile without error:
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PYBIND11_DECLARE_HOLDER_TYPE(T, std::shared_ptr<T>);
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namespace {
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// This is just a wrapper around unique_ptr, but with extra fields to deliberately bloat up the
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// holder size to trigger the non-simple-layout internal instance layout for single inheritance with
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@ -43,7 +27,6 @@ public:
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huge_unique_ptr(T *p) : ptr(p) {};
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T *get() { return ptr.get(); }
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};
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PYBIND11_DECLARE_HOLDER_TYPE(T, huge_unique_ptr<T>);
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// Simple custom holder that works like unique_ptr
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template <typename T>
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@ -54,7 +37,6 @@ public:
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T* get() const { return impl.get(); }
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T* release_ptr() { return impl.release(); }
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};
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PYBIND11_DECLARE_HOLDER_TYPE(T, custom_unique_ptr<T>);
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// Simple custom holder that works like shared_ptr and has operator& overload
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// To obtain address of an instance of this holder pybind should use std::addressof
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@ -68,7 +50,6 @@ public:
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T* get() const { return impl.get(); }
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T** operator&() { throw std::logic_error("Call of overloaded operator& is not expected"); }
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};
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PYBIND11_DECLARE_HOLDER_TYPE(T, shared_ptr_with_addressof_operator<T>);
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// Simple custom holder that works like unique_ptr and has operator& overload
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// To obtain address of an instance of this holder pybind should use std::addressof
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@ -83,10 +64,218 @@ public:
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T* release_ptr() { return impl.release(); }
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T** operator&() { throw std::logic_error("Call of overloaded operator& is not expected"); }
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};
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// Custom object with builtin reference counting (see 'object.h' for the implementation)
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class MyObject1 : public Object {
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public:
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MyObject1(int value) : value(value) { print_created(this, toString()); }
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std::string toString() const override { return "MyObject1[" + std::to_string(value) + "]"; }
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protected:
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~MyObject1() override { print_destroyed(this); }
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private:
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int value;
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};
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// Object managed by a std::shared_ptr<>
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class MyObject2 {
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public:
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MyObject2(const MyObject2 &) = default;
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MyObject2(int value) : value(value) { print_created(this, toString()); }
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std::string toString() const { return "MyObject2[" + std::to_string(value) + "]"; }
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virtual ~MyObject2() { print_destroyed(this); }
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private:
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int value;
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};
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// Object managed by a std::shared_ptr<>, additionally derives from std::enable_shared_from_this<>
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class MyObject3 : public std::enable_shared_from_this<MyObject3> {
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public:
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MyObject3(const MyObject3 &) = default;
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MyObject3(int value) : value(value) { print_created(this, toString()); }
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std::string toString() const { return "MyObject3[" + std::to_string(value) + "]"; }
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virtual ~MyObject3() { print_destroyed(this); }
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private:
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int value;
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};
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// test_unique_nodelete
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// Object with a private destructor
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class MyObject4;
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static std::unordered_set<MyObject4 *> myobject4_instances;
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class MyObject4 {
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public:
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MyObject4(int value) : value{value} {
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print_created(this);
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myobject4_instances.insert(this);
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}
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int value;
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static void cleanupAllInstances() {
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auto tmp = std::move(myobject4_instances);
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myobject4_instances.clear();
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for (auto o : tmp)
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delete o;
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}
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private:
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~MyObject4() {
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myobject4_instances.erase(this);
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print_destroyed(this);
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}
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};
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// test_unique_deleter
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// Object with std::unique_ptr<T, D> where D is not matching the base class
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// Object with a protected destructor
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class MyObject4a;
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static std::unordered_set<MyObject4a *> myobject4a_instances;
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class MyObject4a {
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public:
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MyObject4a(int i) {
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value = i;
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print_created(this);
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myobject4a_instances.insert(this);
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};
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int value;
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static void cleanupAllInstances() {
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auto tmp = std::move(myobject4a_instances);
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myobject4a_instances.clear();
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for (auto o : tmp)
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delete o;
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}
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protected:
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virtual ~MyObject4a() {
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myobject4a_instances.erase(this);
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print_destroyed(this);
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}
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};
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// Object derived but with public destructor and no Deleter in default holder
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class MyObject4b : public MyObject4a {
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public:
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MyObject4b(int i) : MyObject4a(i) { print_created(this); }
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~MyObject4b() override { print_destroyed(this); }
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};
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// test_large_holder
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class MyObject5 { // managed by huge_unique_ptr
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public:
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MyObject5(int value) : value{value} { print_created(this); }
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~MyObject5() { print_destroyed(this); }
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int value;
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};
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// test_shared_ptr_and_references
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struct SharedPtrRef {
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struct A {
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A() { print_created(this); }
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A(const A &) { print_copy_created(this); }
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A(A &&) { print_move_created(this); }
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~A() { print_destroyed(this); }
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};
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A value = {};
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std::shared_ptr<A> shared = std::make_shared<A>();
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};
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// test_shared_ptr_from_this_and_references
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struct SharedFromThisRef {
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struct B : std::enable_shared_from_this<B> {
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B() { print_created(this); }
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B(const B &) : std::enable_shared_from_this<B>() { print_copy_created(this); }
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B(B &&) : std::enable_shared_from_this<B>() { print_move_created(this); }
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~B() { print_destroyed(this); }
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};
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B value = {};
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std::shared_ptr<B> shared = std::make_shared<B>();
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};
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// Issue #865: shared_from_this doesn't work with virtual inheritance
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struct SharedFromThisVBase : std::enable_shared_from_this<SharedFromThisVBase> {
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SharedFromThisVBase() = default;
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SharedFromThisVBase(const SharedFromThisVBase &) = default;
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virtual ~SharedFromThisVBase() = default;
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};
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struct SharedFromThisVirt : virtual SharedFromThisVBase {};
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// test_move_only_holder
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struct C {
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C() { print_created(this); }
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~C() { print_destroyed(this); }
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};
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// test_holder_with_addressof_operator
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struct TypeForHolderWithAddressOf {
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TypeForHolderWithAddressOf() { print_created(this); }
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TypeForHolderWithAddressOf(const TypeForHolderWithAddressOf &) { print_copy_created(this); }
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TypeForHolderWithAddressOf(TypeForHolderWithAddressOf &&) { print_move_created(this); }
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~TypeForHolderWithAddressOf() { print_destroyed(this); }
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std::string toString() const {
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return "TypeForHolderWithAddressOf[" + std::to_string(value) + "]";
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}
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int value = 42;
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};
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// test_move_only_holder_with_addressof_operator
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struct TypeForMoveOnlyHolderWithAddressOf {
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TypeForMoveOnlyHolderWithAddressOf(int value) : value{value} { print_created(this); }
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~TypeForMoveOnlyHolderWithAddressOf() { print_destroyed(this); }
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std::string toString() const {
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return "MoveOnlyHolderWithAddressOf[" + std::to_string(value) + "]";
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}
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int value;
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};
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// test_smart_ptr_from_default
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struct HeldByDefaultHolder { };
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// test_shared_ptr_gc
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// #187: issue involving std::shared_ptr<> return value policy & garbage collection
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struct ElementBase {
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virtual ~ElementBase() = default; /* Force creation of virtual table */
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ElementBase() = default;
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ElementBase(const ElementBase&) = delete;
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};
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struct ElementA : ElementBase {
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ElementA(int v) : v(v) { }
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int value() { return v; }
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int v;
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};
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struct ElementList {
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void add(std::shared_ptr<ElementBase> e) { l.push_back(e); }
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std::vector<std::shared_ptr<ElementBase>> l;
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};
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} // namespace
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// ref<T> is a wrapper for 'Object' which uses intrusive reference counting
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// It is always possible to construct a ref<T> from an Object* pointer without
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// possible inconsistencies, hence the 'true' argument at the end.
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// Make pybind11 aware of the non-standard getter member function
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namespace pybind11 { namespace detail {
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template <typename T>
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struct holder_helper<ref<T>> {
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static const T *get(const ref<T> &p) { return p.get_ptr(); }
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};
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} // namespace detail
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} // namespace pybind11
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// Make pybind aware of the ref-counted wrapper type (s):
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PYBIND11_DECLARE_HOLDER_TYPE(T, ref<T>, true);
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// The following is not required anymore for std::shared_ptr, but it should compile without error:
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PYBIND11_DECLARE_HOLDER_TYPE(T, std::shared_ptr<T>);
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PYBIND11_DECLARE_HOLDER_TYPE(T, huge_unique_ptr<T>);
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PYBIND11_DECLARE_HOLDER_TYPE(T, custom_unique_ptr<T>);
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PYBIND11_DECLARE_HOLDER_TYPE(T, shared_ptr_with_addressof_operator<T>);
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PYBIND11_DECLARE_HOLDER_TYPE(T, unique_ptr_with_addressof_operator<T>);
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TEST_SUBMODULE(smart_ptr, m) {
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// Please do not interleave `struct` and `class` definitions with bindings code,
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// but implement `struct`s and `class`es in the anonymous namespace above.
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// This helps keeping the smart_holder branch in sync with master.
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// test_smart_ptr
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@ -94,16 +283,6 @@ TEST_SUBMODULE(smart_ptr, 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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// Custom object with builtin reference counting (see 'object.h' for the implementation)
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class MyObject1 : public Object {
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public:
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MyObject1(int value) : value(value) { print_created(this, toString()); }
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std::string toString() const override { return "MyObject1[" + std::to_string(value) + "]"; }
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protected:
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~MyObject1() override { print_destroyed(this); }
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private:
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int value;
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};
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py::class_<MyObject1, ref<MyObject1>>(m, "MyObject1", obj)
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.def(py::init<int>());
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py::implicitly_convertible<py::int_, MyObject1>();
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@ -124,17 +303,6 @@ TEST_SUBMODULE(smart_ptr, m) {
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// Expose constructor stats for the ref type
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m.def("cstats_ref", &ConstructorStats::get<ref_tag>);
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// Object managed by a std::shared_ptr<>
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class MyObject2 {
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public:
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MyObject2(const MyObject2 &) = default;
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MyObject2(int value) : value(value) { print_created(this, toString()); }
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std::string toString() const { return "MyObject2[" + std::to_string(value) + "]"; }
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virtual ~MyObject2() { print_destroyed(this); }
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private:
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int value;
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};
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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", []() { return new MyObject2(6); });
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@ -144,16 +312,6 @@ TEST_SUBMODULE(smart_ptr, m) {
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m.def("print_myobject2_3", [](const std::shared_ptr<MyObject2> &obj) { py::print(obj->toString()); });
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m.def("print_myobject2_4", [](const std::shared_ptr<MyObject2> *obj) { py::print((*obj)->toString()); });
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// Object managed by a std::shared_ptr<>, additionally derives from std::enable_shared_from_this<>
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class MyObject3 : public std::enable_shared_from_this<MyObject3> {
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public:
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MyObject3(const MyObject3 &) = default;
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MyObject3(int value) : value(value) { print_created(this, toString()); }
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std::string toString() const { return "MyObject3[" + std::to_string(value) + "]"; }
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virtual ~MyObject3() { print_destroyed(this); }
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private:
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int value;
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};
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py::class_<MyObject3, std::shared_ptr<MyObject3>>(m, "MyObject3")
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.def(py::init<int>());
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m.def("make_myobject3_1", []() { return new MyObject3(8); });
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@ -175,100 +333,29 @@ TEST_SUBMODULE(smart_ptr, m) {
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});
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// test_unique_nodelete
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// Object with a private destructor
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class MyObject4;
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static std::unordered_set<MyObject4 *> myobject4_instances;
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class MyObject4 {
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public:
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MyObject4(int value) : value{value} {
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print_created(this);
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myobject4_instances.insert(this);
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}
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int value;
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static void cleanupAllInstances() {
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auto tmp = std::move(myobject4_instances);
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myobject4_instances.clear();
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for (auto o : tmp)
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delete o;
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}
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private:
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~MyObject4() {
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myobject4_instances.erase(this);
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print_destroyed(this);
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}
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};
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py::class_<MyObject4, std::unique_ptr<MyObject4, py::nodelete>>(m, "MyObject4")
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.def(py::init<int>())
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.def_readwrite("value", &MyObject4::value)
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.def_static("cleanup_all_instances", &MyObject4::cleanupAllInstances);
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// test_unique_deleter
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// Object with std::unique_ptr<T, D> where D is not matching the base class
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// Object with a protected destructor
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class MyObject4a;
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static std::unordered_set<MyObject4a *> myobject4a_instances;
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class MyObject4a {
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public:
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MyObject4a(int i) {
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value = i;
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print_created(this);
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myobject4a_instances.insert(this);
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};
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int value;
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static void cleanupAllInstances() {
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auto tmp = std::move(myobject4a_instances);
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myobject4a_instances.clear();
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for (auto o : tmp)
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delete o;
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}
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protected:
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virtual ~MyObject4a() {
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myobject4a_instances.erase(this);
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print_destroyed(this);
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}
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};
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py::class_<MyObject4a, std::unique_ptr<MyObject4a, py::nodelete>>(m, "MyObject4a")
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.def(py::init<int>())
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.def_readwrite("value", &MyObject4a::value)
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.def_static("cleanup_all_instances", &MyObject4a::cleanupAllInstances);
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// Object derived but with public destructor and no Deleter in default holder
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class MyObject4b : public MyObject4a {
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public:
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MyObject4b(int i) : MyObject4a(i) { print_created(this); }
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~MyObject4b() override { print_destroyed(this); }
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};
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py::class_<MyObject4b, MyObject4a>(m, "MyObject4b")
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py::class_<MyObject4b, MyObject4a, std::unique_ptr<MyObject4b>>(m, "MyObject4b")
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.def(py::init<int>());
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// test_large_holder
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class MyObject5 { // managed by huge_unique_ptr
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public:
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MyObject5(int value) : value{value} { print_created(this); }
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~MyObject5() { print_destroyed(this); }
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int value;
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};
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py::class_<MyObject5, huge_unique_ptr<MyObject5>>(m, "MyObject5")
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.def(py::init<int>())
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.def_readwrite("value", &MyObject5::value);
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// test_shared_ptr_and_references
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struct SharedPtrRef {
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struct A {
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A() { print_created(this); }
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A(const A &) { print_copy_created(this); }
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A(A &&) { print_move_created(this); }
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~A() { print_destroyed(this); }
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};
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A value = {};
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std::shared_ptr<A> shared = std::make_shared<A>();
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};
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using A = SharedPtrRef::A;
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py::class_<A, std::shared_ptr<A>>(m, "A");
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py::class_<SharedPtrRef>(m, "SharedPtrRef")
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py::class_<SharedPtrRef, std::unique_ptr<SharedPtrRef>>(m, "SharedPtrRef")
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.def(py::init<>())
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.def_readonly("ref", &SharedPtrRef::value)
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.def_property_readonly("copy", [](const SharedPtrRef &s) { return s.value; },
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@ -280,20 +367,9 @@ TEST_SUBMODULE(smart_ptr, m) {
|
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.def("set_holder", [](SharedPtrRef &, std::shared_ptr<A>) { return true; });
|
||||
|
||||
// test_shared_ptr_from_this_and_references
|
||||
struct SharedFromThisRef {
|
||||
struct B : std::enable_shared_from_this<B> {
|
||||
B() { print_created(this); }
|
||||
B(const B &) : std::enable_shared_from_this<B>() { print_copy_created(this); }
|
||||
B(B &&) : std::enable_shared_from_this<B>() { print_move_created(this); }
|
||||
~B() { print_destroyed(this); }
|
||||
};
|
||||
|
||||
B value = {};
|
||||
std::shared_ptr<B> shared = std::make_shared<B>();
|
||||
};
|
||||
using B = SharedFromThisRef::B;
|
||||
py::class_<B, std::shared_ptr<B>>(m, "B");
|
||||
py::class_<SharedFromThisRef>(m, "SharedFromThisRef")
|
||||
py::class_<SharedFromThisRef, std::unique_ptr<SharedFromThisRef>>(m, "SharedFromThisRef")
|
||||
.def(py::init<>())
|
||||
.def_readonly("bad_wp", &SharedFromThisRef::value)
|
||||
.def_property_readonly("ref", [](const SharedFromThisRef &s) -> const B & { return *s.shared; })
|
||||
@ -306,36 +382,16 @@ TEST_SUBMODULE(smart_ptr, m) {
|
||||
.def("set_holder", [](SharedFromThisRef &, std::shared_ptr<B>) { return true; });
|
||||
|
||||
// Issue #865: shared_from_this doesn't work with virtual inheritance
|
||||
struct SharedFromThisVBase : std::enable_shared_from_this<SharedFromThisVBase> {
|
||||
SharedFromThisVBase() = default;
|
||||
SharedFromThisVBase(const SharedFromThisVBase &) = default;
|
||||
virtual ~SharedFromThisVBase() = default;
|
||||
};
|
||||
struct SharedFromThisVirt : virtual SharedFromThisVBase {};
|
||||
static std::shared_ptr<SharedFromThisVirt> sft(new SharedFromThisVirt());
|
||||
py::class_<SharedFromThisVirt, std::shared_ptr<SharedFromThisVirt>>(m, "SharedFromThisVirt")
|
||||
.def_static("get", []() { return sft.get(); });
|
||||
|
||||
// test_move_only_holder
|
||||
struct C {
|
||||
C() { print_created(this); }
|
||||
~C() { print_destroyed(this); }
|
||||
};
|
||||
py::class_<C, custom_unique_ptr<C>>(m, "TypeWithMoveOnlyHolder")
|
||||
.def_static("make", []() { return custom_unique_ptr<C>(new C); })
|
||||
.def_static("make_as_object", []() { return py::cast(custom_unique_ptr<C>(new C)); });
|
||||
|
||||
// test_holder_with_addressof_operator
|
||||
struct TypeForHolderWithAddressOf {
|
||||
TypeForHolderWithAddressOf() { print_created(this); }
|
||||
TypeForHolderWithAddressOf(const TypeForHolderWithAddressOf &) { print_copy_created(this); }
|
||||
TypeForHolderWithAddressOf(TypeForHolderWithAddressOf &&) { print_move_created(this); }
|
||||
~TypeForHolderWithAddressOf() { print_destroyed(this); }
|
||||
std::string toString() const {
|
||||
return "TypeForHolderWithAddressOf[" + std::to_string(value) + "]";
|
||||
}
|
||||
int value = 42;
|
||||
};
|
||||
using HolderWithAddressOf = shared_ptr_with_addressof_operator<TypeForHolderWithAddressOf>;
|
||||
py::class_<TypeForHolderWithAddressOf, HolderWithAddressOf>(m, "TypeForHolderWithAddressOf")
|
||||
.def_static("make", []() { return HolderWithAddressOf(new TypeForHolderWithAddressOf); })
|
||||
@ -346,14 +402,6 @@ TEST_SUBMODULE(smart_ptr, m) {
|
||||
.def("print_object_4", [](const HolderWithAddressOf *obj) { py::print((*obj).get()->toString()); });
|
||||
|
||||
// test_move_only_holder_with_addressof_operator
|
||||
struct TypeForMoveOnlyHolderWithAddressOf {
|
||||
TypeForMoveOnlyHolderWithAddressOf(int value) : value{value} { print_created(this); }
|
||||
~TypeForMoveOnlyHolderWithAddressOf() { print_destroyed(this); }
|
||||
std::string toString() const {
|
||||
return "MoveOnlyHolderWithAddressOf[" + std::to_string(value) + "]";
|
||||
}
|
||||
int value;
|
||||
};
|
||||
using MoveOnlyHolderWithAddressOf = unique_ptr_with_addressof_operator<TypeForMoveOnlyHolderWithAddressOf>;
|
||||
py::class_<TypeForMoveOnlyHolderWithAddressOf, MoveOnlyHolderWithAddressOf>(m, "TypeForMoveOnlyHolderWithAddressOf")
|
||||
.def_static("make", []() { return MoveOnlyHolderWithAddressOf(new TypeForMoveOnlyHolderWithAddressOf(0)); })
|
||||
@ -361,33 +409,18 @@ TEST_SUBMODULE(smart_ptr, m) {
|
||||
.def("print_object", [](const TypeForMoveOnlyHolderWithAddressOf *obj) { py::print(obj->toString()); });
|
||||
|
||||
// test_smart_ptr_from_default
|
||||
struct HeldByDefaultHolder { };
|
||||
py::class_<HeldByDefaultHolder>(m, "HeldByDefaultHolder")
|
||||
py::class_<HeldByDefaultHolder, std::unique_ptr<HeldByDefaultHolder>>(m, "HeldByDefaultHolder")
|
||||
.def(py::init<>())
|
||||
.def_static("load_shared_ptr", [](std::shared_ptr<HeldByDefaultHolder>) {});
|
||||
|
||||
// test_shared_ptr_gc
|
||||
// #187: issue involving std::shared_ptr<> return value policy & garbage collection
|
||||
struct ElementBase {
|
||||
virtual ~ElementBase() = default; /* Force creation of virtual table */
|
||||
ElementBase() = default;
|
||||
ElementBase(const ElementBase&) = delete;
|
||||
};
|
||||
py::class_<ElementBase, std::shared_ptr<ElementBase>>(m, "ElementBase");
|
||||
|
||||
struct ElementA : ElementBase {
|
||||
ElementA(int v) : v(v) { }
|
||||
int value() { return v; }
|
||||
int v;
|
||||
};
|
||||
py::class_<ElementA, ElementBase, std::shared_ptr<ElementA>>(m, "ElementA")
|
||||
.def(py::init<int>())
|
||||
.def("value", &ElementA::value);
|
||||
|
||||
struct ElementList {
|
||||
void add(std::shared_ptr<ElementBase> e) { l.push_back(e); }
|
||||
std::vector<std::shared_ptr<ElementBase>> l;
|
||||
};
|
||||
py::class_<ElementList, std::shared_ptr<ElementList>>(m, "ElementList")
|
||||
.def(py::init<>())
|
||||
.def("add", &ElementList::add)
|
||||
|
||||
Loading…
Reference in New Issue
Block a user