mirror of https://github.com/pybind/pybind11.git
55 lines
1.8 KiB
C++
55 lines
1.8 KiB
C++
#include <pybind11/smart_holder.h>
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#include "number_bucket.h"
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#include <cstddef>
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#include <memory>
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namespace hc { // holder comparison
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using nb_up = pybind11_ubench::number_bucket<1>;
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using nb_sp = pybind11_ubench::number_bucket<2>;
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using nb_pu = pybind11_ubench::number_bucket<3>;
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using nb_sh = pybind11_ubench::number_bucket<4>;
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namespace py = pybind11;
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template <typename WrappedType, typename HolderType>
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void wrap_number_bucket(py::module m, const char *class_name) {
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py::class_<WrappedType, HolderType>(m, class_name)
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.def(py::init<std::size_t>(), py::arg("data_size") = 0)
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.def("sum", &WrappedType::sum)
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.def("add", &WrappedType::add, py::arg("other"));
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}
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template <typename T>
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class padded_unique_ptr {
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std::unique_ptr<T> ptr;
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char padding[sizeof(py::smart_holder) - sizeof(std::unique_ptr<T>)];
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public:
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padded_unique_ptr(T *p) : ptr(p) {}
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T *get() { return ptr.get(); }
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};
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static_assert(sizeof(padded_unique_ptr<nb_pu>) == sizeof(py::smart_holder),
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"Unexpected sizeof mismatch.");
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} // namespace hc
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PYBIND11_DECLARE_HOLDER_TYPE(T, hc::padded_unique_ptr<T>);
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PYBIND11_TYPE_CASTER_BASE_HOLDER(hc::nb_up, std::unique_ptr<hc::nb_up>)
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PYBIND11_TYPE_CASTER_BASE_HOLDER(hc::nb_sp, std::shared_ptr<hc::nb_sp>)
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PYBIND11_TYPE_CASTER_BASE_HOLDER(hc::nb_pu, hc::padded_unique_ptr<hc::nb_pu>)
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PYBIND11_SMART_HOLDER_TYPE_CASTERS(hc::nb_sh)
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PYBIND11_MODULE(pybind11_ubench_holder_comparison, m) {
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using namespace hc;
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m.def("sizeof_smart_holder", []() { return sizeof(py::smart_holder); });
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wrap_number_bucket<nb_up, std::unique_ptr<nb_up>>(m, "number_bucket_up");
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wrap_number_bucket<nb_sp, std::shared_ptr<nb_sp>>(m, "number_bucket_sp");
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wrap_number_bucket<nb_pu, padded_unique_ptr<nb_pu>>(m, "number_bucket_pu");
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wrap_number_bucket<nb_sh, py::smart_holder>(m, "number_bucket_sh");
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}
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