mirror of
https://github.com/pytorch/pytorch.git
synced 2025-10-21 05:34:18 +08:00
6ec71ed4f9
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/55799 I'm going to change the implementation of cdata soon so I need to abstract over cdata access with a function. Additionally, many users are casting manually casting to THPVariable to access the member so I can remove these unsafe casts in the client code (the implementation, of course, is still doing an unsafe cast.) Signed-off-by: Edward Z. Yang <ezyang@fb.com> Test Plan: Imported from OSS Reviewed By: albanD Differential Revision: D27712130 Pulled By: ezyang fbshipit-source-id: 95fcc013bf3913d67f2c634068eb5b3aab144cb3
110 lines
3.3 KiB
C++
110 lines
3.3 KiB
C++
#pragma once
|
|
|
|
#include <torch/csrc/python_headers.h>
|
|
|
|
#include <ATen/ATen.h>
|
|
#include <pybind11/pybind11.h>
|
|
#include <pybind11/stl.h>
|
|
|
|
#include <torch/csrc/DynamicTypes.h>
|
|
#include <torch/csrc/autograd/python_variable.h>
|
|
#include <torch/csrc/utils/python_tuples.h>
|
|
#include <torch/csrc/utils/python_numbers.h>
|
|
#include <torch/csrc/Generator.h>
|
|
|
|
#include <stdexcept>
|
|
#include <utility>
|
|
|
|
namespace py = pybind11;
|
|
|
|
// This makes intrusive_ptr to be available as a custom pybind11 holder type,
|
|
// see
|
|
// https://pybind11.readthedocs.io/en/stable/advanced/smart_ptrs.html#custom-smart-pointers
|
|
PYBIND11_DECLARE_HOLDER_TYPE(T, c10::intrusive_ptr<T>, true);
|
|
|
|
namespace pybind11 { namespace detail {
|
|
|
|
// torch.Tensor <-> at::Tensor conversions (without unwrapping)
|
|
template <>
|
|
struct type_caster<at::Tensor> {
|
|
public:
|
|
// NOLINTNEXTLINE(cppcoreguidelines-non-private-member-variables-in-classes)
|
|
PYBIND11_TYPE_CASTER(at::Tensor, _("at::Tensor"));
|
|
|
|
bool load(handle src, bool) {
|
|
PyObject* obj = src.ptr();
|
|
if (THPVariable_Check(obj)) {
|
|
value = THPVariable_Unpack(obj);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static handle
|
|
cast(const at::Tensor& src, return_value_policy /* policy */, handle /* parent */) {
|
|
return handle(THPVariable_Wrap(src));
|
|
}
|
|
};
|
|
|
|
template <>
|
|
struct type_caster<at::Generator> {
|
|
public:
|
|
// NOLINTNEXTLINE(cppcoreguidelines-non-private-member-variables-in-classes)
|
|
PYBIND11_TYPE_CASTER(at::Generator, _("at::Generator"));
|
|
|
|
bool load(handle src, bool) {
|
|
PyObject* obj = src.ptr();
|
|
if (THPGenerator_Check(obj)) {
|
|
value = reinterpret_cast<THPGenerator*>(obj)->cdata;
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static handle
|
|
cast(const at::Generator& src, return_value_policy /* policy */, handle /* parent */) {
|
|
return handle(THPGenerator_Wrap(src));
|
|
}
|
|
};
|
|
|
|
template<> struct type_caster<at::IntArrayRef> {
|
|
public:
|
|
// NOLINTNEXTLINE(cppcoreguidelines-non-private-member-variables-in-classes)
|
|
PYBIND11_TYPE_CASTER(at::IntArrayRef, _("at::IntArrayRef"));
|
|
|
|
bool load(handle src, bool) {
|
|
PyObject *source = src.ptr();
|
|
auto tuple = PyTuple_Check(source);
|
|
if (tuple || PyList_Check(source)) {
|
|
// NOLINTNEXTLINE(bugprone-branch-clone)
|
|
auto size = tuple ? PyTuple_GET_SIZE(source) : PyList_GET_SIZE(source);
|
|
v_value.resize(size);
|
|
for (int idx = 0; idx < size; idx++) {
|
|
PyObject* obj = tuple ? PyTuple_GET_ITEM(source, idx) : PyList_GET_ITEM(source, idx);
|
|
if (THPVariable_Check(obj)) {
|
|
v_value[idx] = THPVariable_Unpack(obj).item<int64_t>();
|
|
} else if (PyLong_Check(obj)) {
|
|
// use THPUtils_unpackLong after it is safe to include python_numbers.h
|
|
v_value[idx] = THPUtils_unpackLong(obj);
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
value = v_value;
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
static handle cast(at::IntArrayRef src, return_value_policy /* policy */, handle /* parent */) {
|
|
return handle(THPUtils_packInt64Array(src.size(), src.data()));
|
|
}
|
|
private:
|
|
std::vector<int64_t> v_value;
|
|
};
|
|
|
|
// Pybind11 bindings for our optional type.
|
|
// http://pybind11.readthedocs.io/en/stable/advanced/cast/stl.html#c-17-library-containers
|
|
template <typename T>
|
|
struct type_caster<c10::optional<T>> : optional_caster<c10::optional<T>> {};
|
|
}} // namespace pybind11::detail
|