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https://github.com/pybind/pybind11.git
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e45c211497
This commit allows multiple inheritance of pybind11 classes from
Python, e.g.
class MyType(Base1, Base2):
def __init__(self):
Base1.__init__(self)
Base2.__init__(self)
where Base1 and Base2 are pybind11-exported classes.
This requires collapsing the various builtin base objects
(pybind11_object_56, ...) introduced in 2.1 into a single
pybind11_object of a fixed size; this fixed size object allocates enough
space to contain either a simple object (one base class & small* holder
instance), or a pointer to a new allocation that can contain an
arbitrary number of base classes and holders, with holder size
unrestricted.
* "small" here means having a sizeof() of at most 2 pointers, which is
enough to fit unique_ptr (sizeof is 1 ptr) and shared_ptr (sizeof is 2
ptrs).
To minimize the performance impact, this repurposes
`internals::registered_types_py` to store a vector of pybind-registered
base types. For direct-use pybind types (e.g. the `PyA` for a C++ `A`)
this is simply storing the same thing as before, but now in a vector;
for Python-side inherited types, the map lets us avoid having to do a
base class traversal as long as we've seen the class before. The
change to vector is needed for multiple inheritance: Python types
inheriting from multiple registered bases have one entry per base.
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|---|---|---|
| .. | ||
| _static | ||
| advanced | ||
| basics.rst | ||
| benchmark.py | ||
| benchmark.rst | ||
| changelog.rst | ||
| classes.rst | ||
| compiling.rst | ||
| conf.py | ||
| Doxyfile | ||
| faq.rst | ||
| index.rst | ||
| intro.rst | ||
| limitations.rst | ||
| Makefile | ||
| pybind11_vs_boost_python1.png | ||
| pybind11_vs_boost_python1.svg | ||
| pybind11_vs_boost_python2.png | ||
| pybind11_vs_boost_python2.svg | ||
| pybind11-logo.png | ||
| reference.rst | ||
| release.rst | ||
| requirements.txt | ||
