83 lines
3.0 KiB
C++
83 lines
3.0 KiB
C++
// Copyright (c) 2025 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
|
|
// SPDX-License-Identifier: BSD-3-Clause
|
|
|
|
// Redistribution and use in source and binary forms, with or without
|
|
// modification, are permitted provided that the following conditions are met:
|
|
|
|
// 1. Redistributions of source code must retain the above copyright notice,
|
|
// this list of conditions and the following disclaimer.
|
|
|
|
// 2. Redistributions in binary form must reproduce the above copyright notice,
|
|
// this list of conditions and the following disclaimer in the documentation
|
|
// and/or other materials provided with the distribution.
|
|
|
|
// 3. Neither the name of the copyright holder nor the names of its
|
|
// contributors may be used to endorse or promote products derived from
|
|
// this software without specific prior written permission.
|
|
|
|
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
|
|
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
// POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
#include <cstdint>
|
|
#include <nanobind/nanobind.h>
|
|
#include <nanobind/stl/string.h>
|
|
#include <nanobind/stl/vector.h>
|
|
|
|
namespace nb = nanobind;
|
|
|
|
// Forward declaration of the MockTensor struct for testing only
|
|
struct MockTensor {
|
|
void *ptr;
|
|
struct {
|
|
int32_t shape[3];
|
|
} shape;
|
|
|
|
struct {
|
|
int32_t strides[3];
|
|
} strides;
|
|
};
|
|
|
|
NB_MODULE(tensor, m) {
|
|
// create a tensor for testing
|
|
m.def("make_tensor", [](int64_t ptr, std::vector<int32_t> shape,
|
|
std::vector<int32_t> strides) {
|
|
auto *tensor = new MockTensor();
|
|
tensor->ptr = reinterpret_cast<void *>(ptr);
|
|
|
|
assert(shape.size() == 3 && "shape must have 3 elements");
|
|
assert(strides.size() == 3 && "strides must have 3 elements");
|
|
|
|
for (size_t i = 0; i < shape.size(); i++) {
|
|
tensor->shape.shape[i] = shape[i];
|
|
tensor->strides.strides[i] = strides[i];
|
|
}
|
|
|
|
return nb::steal(PyCapsule_New(tensor, "tensor", [](PyObject *capsule) {
|
|
auto n = PyCapsule_GetName(capsule);
|
|
if (void *p = PyCapsule_GetPointer(capsule, n)) {
|
|
delete reinterpret_cast<MockTensor *>(p);
|
|
}
|
|
}));
|
|
});
|
|
|
|
m.def(
|
|
"pycapsule_get_pointer",
|
|
[](nb::object &capsule) {
|
|
void *ptr = PyCapsule_GetPointer(capsule.ptr(), "tensor");
|
|
if (!ptr) {
|
|
throw std::runtime_error("Invalid tensor capsule");
|
|
}
|
|
return reinterpret_cast<uintptr_t>(ptr);
|
|
},
|
|
"Get pointer from PyCapsule");
|
|
}
|