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76f9669 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 | // SPDX-FileCopyrightText: Copyright (c) 2021-2024 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
// SPDX-License-Identifier: LicenseRef-NVIDIA-SOFTWARE-LICENSE
// Please refer to the NVIDIA end user license agreement (EULA) associated
// with this source code for terms and conditions that govern your use of
// this software. Any use, reproduction, disclosure, or distribution of
// this software and related documentation outside the terms of the EULA
// is strictly prohibited.
#include <Python.h>
#include <map>
#include <functional>
#include <stdexcept>
#include <string>
static PyObject* ctypes_module = nullptr;
static PyTypeObject* ctypes_c_char = nullptr;
static PyTypeObject* ctypes_c_bool = nullptr;
static PyTypeObject* ctypes_c_wchar = nullptr;
static PyTypeObject* ctypes_c_byte = nullptr;
static PyTypeObject* ctypes_c_ubyte = nullptr;
static PyTypeObject* ctypes_c_short = nullptr;
static PyTypeObject* ctypes_c_ushort = nullptr;
static PyTypeObject* ctypes_c_int = nullptr;
static PyTypeObject* ctypes_c_uint = nullptr;
static PyTypeObject* ctypes_c_long = nullptr;
static PyTypeObject* ctypes_c_ulong = nullptr;
static PyTypeObject* ctypes_c_longlong = nullptr;
static PyTypeObject* ctypes_c_ulonglong = nullptr;
static PyTypeObject* ctypes_c_size_t = nullptr;
static PyTypeObject* ctypes_c_float = nullptr;
static PyTypeObject* ctypes_c_double = nullptr;
static PyTypeObject* ctypes_c_void_p = nullptr;
static void fetch_ctypes()
{
ctypes_module = PyImport_ImportModule("ctypes");
if (ctypes_module == nullptr)
throw std::runtime_error("Cannot import ctypes module");
// get method addressof
PyObject* ctypes_dict = PyModule_GetDict(ctypes_module);
if (ctypes_dict == nullptr)
throw std::runtime_error(std::string("FAILURE @ ") + std::string(__FILE__) + " : " + std::to_string(__LINE__));
// supportedtypes
ctypes_c_char = (PyTypeObject*) PyDict_GetItemString(ctypes_dict, "c_char");
ctypes_c_bool = (PyTypeObject*) PyDict_GetItemString(ctypes_dict, "c_bool");
ctypes_c_wchar = (PyTypeObject*) PyDict_GetItemString(ctypes_dict, "c_wchar");
ctypes_c_byte = (PyTypeObject*) PyDict_GetItemString(ctypes_dict, "c_byte");
ctypes_c_ubyte = (PyTypeObject*) PyDict_GetItemString(ctypes_dict, "c_ubyte");
ctypes_c_short = (PyTypeObject*) PyDict_GetItemString(ctypes_dict, "c_short");
ctypes_c_ushort = (PyTypeObject*) PyDict_GetItemString(ctypes_dict, "c_ushort");
ctypes_c_int = (PyTypeObject*) PyDict_GetItemString(ctypes_dict, "c_int");
ctypes_c_uint = (PyTypeObject*) PyDict_GetItemString(ctypes_dict, "c_uint");
ctypes_c_long = (PyTypeObject*) PyDict_GetItemString(ctypes_dict, "c_long");
ctypes_c_ulong = (PyTypeObject*) PyDict_GetItemString(ctypes_dict, "c_ulong");
ctypes_c_longlong = (PyTypeObject*) PyDict_GetItemString(ctypes_dict, "c_longlong");
ctypes_c_ulonglong = (PyTypeObject*) PyDict_GetItemString(ctypes_dict, "c_ulonglong");
ctypes_c_size_t = (PyTypeObject*) PyDict_GetItemString(ctypes_dict, "c_size_t");
ctypes_c_float = (PyTypeObject*) PyDict_GetItemString(ctypes_dict, "c_float");
ctypes_c_double = (PyTypeObject*) PyDict_GetItemString(ctypes_dict, "c_double");
ctypes_c_void_p = (PyTypeObject*) PyDict_GetItemString(ctypes_dict, "c_void_p"); // == c_voidp
}
// (target type, source type)
static std::map<std::pair<PyTypeObject*,PyTypeObject*>, std::function<int(void*, PyObject*)>> m_feeders;
static void populate_feeders(PyTypeObject* target_t, PyTypeObject* source_t)
{
if (target_t == ctypes_c_int)
{
if (source_t == &PyLong_Type)
{
m_feeders[{target_t,source_t}] = [](void* ptr, PyObject* value) -> int
{
*((int*)ptr) = (int)PyLong_AsLong(value);
return sizeof(int);
};
return;
}
} else if (target_t == ctypes_c_bool) {
if (source_t == &PyBool_Type)
{
m_feeders[{target_t,source_t}] = [](void* ptr, PyObject* value) -> int
{
*((bool*)ptr) = (value == Py_True);
return sizeof(bool);
};
return;
}
} else if (target_t == ctypes_c_byte) {
if (source_t == &PyLong_Type)
{
m_feeders[{target_t,source_t}] = [](void* ptr, PyObject* value) -> int
{
*((int8_t*)ptr) = (int8_t)PyLong_AsLong(value);
return sizeof(int8_t);
};
return;
}
} else if (target_t == ctypes_c_double) {
if (source_t == &PyFloat_Type)
{
m_feeders[{target_t,source_t}] = [](void* ptr, PyObject* value) -> int
{
*((double*)ptr) = (double)PyFloat_AsDouble(value);
return sizeof(double);
};
return;
}
} else if (target_t == ctypes_c_float) {
if (source_t == &PyFloat_Type)
{
m_feeders[{target_t,source_t}] = [](void* ptr, PyObject* value) -> int
{
*((float*)ptr) = (float)PyFloat_AsDouble(value);
return sizeof(float);
};
return;
}
} else if (target_t == ctypes_c_longlong) {
if (source_t == &PyLong_Type)
{
m_feeders[{target_t,source_t}] = [](void* ptr, PyObject* value) -> int
{
*((long long*)ptr) = (long long)PyLong_AsLongLong(value);
return sizeof(long long);
};
return;
}
}
}
static int feed(void* ptr, PyObject* value, PyObject* type)
{
PyTypeObject* pto = (PyTypeObject*)type;
if (ctypes_c_int == nullptr)
fetch_ctypes();
auto found = m_feeders.find({pto,value->ob_type});
if (found == m_feeders.end())
{
populate_feeders(pto, value->ob_type);
found = m_feeders.find({pto,value->ob_type});
}
if (found != m_feeders.end())
{
return found->second(ptr, value);
}
return 0;
}
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