Roland Conybeare
707562f1f2
git-subtree-dir: xo-pyutil git-subtree-mainline:219038c445git-subtree-split:a2cb8ae60f
30 lines
965 B
C++
30 lines
965 B
C++
/* @file pyutil.hpp
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*
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* utility stuff to be used across multiple pybind11 .cpp files
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*/
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#pragma once
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#include "xo/refcnt/Refcounted.hpp"
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#include "xo/refcnt/Unowned.hpp"
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#include <pybind11/pybind11.h>
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/* xo::ref::intrusive_ptr<T> is an intrusively-reference-counted pointer.
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* always safe to create one from a T* p
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* (since refcount is directly accessible from p)
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*
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* Need declaration like this before any pybind11 bindings
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* that expose an object of types like
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* (a) intrusive_ptr<T> or
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* (b) T * / T const * / T & / T const & to python.
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* If this were not done, pybind11 would by default use unique_ptr<intrusive_ptr<T>>
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* (ok but inefficient) or unique_ptr<T> (fatal!)
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*/
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PYBIND11_DECLARE_HOLDER_TYPE(T, xo::ref::intrusive_ptr<T>, true);
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/* xo::ref::unowned_ptr<T> is an unmanaged pointer.
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* use this for immortal objects that pybind11 must not delete.
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*/
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PYBIND11_DECLARE_HOLDER_TYPE(T, xo::ref::unowned_ptr<T>, true);
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/* end pyutil.hpp */
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