pythonnet/src/runtime/runtime.cs at drop-python2 · filmor/pythonnet · GitHub

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using System.Reflection.Emit;

using System;

using System.Diagnostics.Contracts;

using System.Runtime.InteropServices;

using System.Security;

using System.Text;

using System.Threading;

using System.Collections.Generic;

using Python.Runtime.Platform;

namespace Python.Runtime

{

/// <summary>

/// Encapsulates the low-level Python C API. Note that it is

/// the responsibility of the caller to have acquired the GIL

/// before calling any of these methods.

/// </summary>

public class Runtime

{

// C# compiler copies constants to the assemblies that references this library.

// We needs to replace all public constants to static readonly fields to allow

// binary substitution of different Python.Runtime.dll builds in a target application.

public static int UCS => _UCS;

#if UCS4

internal const int _UCS = 4;

/// <summary>

/// EntryPoint to be used in DllImport to map to correct Unicode

/// methods prior to PEP393. Only used for PY27.

/// </summary>

private const string PyUnicodeEntryPoint = "PyUnicodeUCS4_";

#elif UCS2

internal const int _UCS = 2;

/// <summary>

/// EntryPoint to be used in DllImport to map to correct Unicode

/// methods prior to PEP393. Only used for PY27.

/// </summary>

private const string PyUnicodeEntryPoint = "PyUnicodeUCS2_";

#else

#error You must define either UCS2 or UCS4!

#endif

#if PYTHON34

const string _minor = "4";

#elif PYTHON35

const string _minor = "5";

#elif PYTHON36

const string _minor = "6";

#elif PYTHON37

const string _minor = "7";

#elif PYTHON38

const string _minor = "8";

#else

#error You must define one of PYTHON34 to PYTHON38

#endif

#if WINDOWS

internal const string dllBase = "python3" + _minor;

#else

internal const string dllBase = "python3." + _minor;

#endif

#if PYTHON_WITH_PYDEBUG

internal const string dllWithPyDebug = "d";

#else

internal const string dllWithPyDebug = "";

#endif

#if PYTHON_WITH_PYMALLOC

internal const string dllWithPyMalloc = "m";

#else

internal const string dllWithPyMalloc = "";

#endif

// C# compiler copies constants to the assemblies that references this library.

// We needs to replace all public constants to static readonly fields to allow

// binary substitution of different Python.Runtime.dll builds in a target application.

public static readonly string PythonDLL = _PythonDll;

#if PYTHON_WITHOUT_ENABLE_SHARED && !NETSTANDARD

internal const string _PythonDll = "__Internal";

#else

internal const string _PythonDll = dllBase + dllWithPyDebug + dllWithPyMalloc;

#endif

// set to true when python is finalizing

internal static object IsFinalizingLock = new object();

internal static bool IsFinalizing;

internal static bool Is32Bit => IntPtr.Size == 4;

// .NET core: System.Runtime.InteropServices.RuntimeInformation.IsOSPlatform(OSPlatform.Windows)

internal static bool IsWindows = Environment.OSVersion.Platform == PlatformID.Win32NT;

static readonly Dictionary<string, OperatingSystemType> OperatingSystemTypeMapping = new Dictionary<string, OperatingSystemType>()

{

{ "Windows", OperatingSystemType.Windows },

{ "Darwin", OperatingSystemType.Darwin },

{ "Linux", OperatingSystemType.Linux },

};

[Obsolete]

public static string OperatingSystemName => OperatingSystem.ToString();

[Obsolete]

public static string MachineName => Machine.ToString();

/// <summary>

/// Gets the operating system as reported by python's platform.system().

/// </summary>

public static OperatingSystemType OperatingSystem { get; private set; }

/// <summary>

/// Map lower-case version of the python machine name to the processor

/// type. There are aliases, e.g. x86_64 and amd64 are two names for

/// the same thing. Make sure to lower-case the search string, because

/// capitalization can differ.

/// </summary>

static readonly Dictionary<string, MachineType> MachineTypeMapping = new Dictionary<string, MachineType>()

{

["i386"] = MachineType.i386,

["i686"] = MachineType.i386,

["x86"] = MachineType.i386,

["x86_64"] = MachineType.x86_64,

["amd64"] = MachineType.x86_64,

["x64"] = MachineType.x86_64,

["em64t"] = MachineType.x86_64,

["armv7l"] = MachineType.armv7l,

["armv8"] = MachineType.armv8,

["aarch64"] = MachineType.aarch64,

};

/// <summary>

/// Gets the machine architecture as reported by python's platform.machine().

/// </summary>

public static MachineType Machine { get; private set; }/* set in Initialize using python's platform.machine */

public static int MainManagedThreadId { get; private set; }

/// <summary>

/// Encoding to use to convert Unicode to/from Managed to Native

/// </summary>

internal static readonly Encoding PyEncoding = _UCS == 2 ? Encoding.Unicode : Encoding.UTF32;

private static PyReferenceCollection _pyRefs = new PyReferenceCollection();

/// <summary>

/// Initialize the runtime...

/// </summary>

internal static void Initialize(bool initSigs = false)

{

if (Py_IsInitialized() == 0)

{

Py_InitializeEx(initSigs ? 1 : 0);

MainManagedThreadId = Thread.CurrentThread.ManagedThreadId;

}

if (PyEval_ThreadsInitialized() == 0)

{

PyEval_InitThreads();

}

IsFinalizing = false;

GenericUtil.Reset();

PyScopeManager.Reset();

ClassManager.Reset();

ClassDerivedObject.Reset();

TypeManager.Reset();

IntPtr op;

{

var builtins = GetBuiltins();

SetPyMember(ref PyNotImplemented, PyObject_GetAttrString(builtins, "NotImplemented"),

() => PyNotImplemented = IntPtr.Zero);

SetPyMember(ref PyBaseObjectType, PyObject_GetAttrString(builtins, "object"),

() => PyBaseObjectType = IntPtr.Zero);

SetPyMember(ref PyNone, PyObject_GetAttrString(builtins, "None"),

() => PyNone = IntPtr.Zero);

SetPyMember(ref PyTrue, PyObject_GetAttrString(builtins, "True"),

() => PyTrue = IntPtr.Zero);

SetPyMember(ref PyFalse, PyObject_GetAttrString(builtins, "False"),

() => PyFalse = IntPtr.Zero);

SetPyMember(ref PyBoolType, PyObject_Type(PyTrue),

() => PyBoolType = IntPtr.Zero);

SetPyMember(ref PyNoneType, PyObject_Type(PyNone),

() => PyNoneType = IntPtr.Zero);

SetPyMember(ref PyTypeType, PyObject_Type(PyNoneType),

() => PyTypeType = IntPtr.Zero);

op = PyObject_GetAttrString(builtins, "len");

SetPyMember(ref PyMethodType, PyObject_Type(op),

() => PyMethodType = IntPtr.Zero);

XDecref(op);

// For some arcane reason, builtins.__dict__.__setitem__ is *not*

// a wrapper_descriptor, even though dict.__setitem__ is.

// object.__init__ seems safe, though.

op = PyObject_GetAttrString(PyBaseObjectType, "__init__");

SetPyMember(ref PyWrapperDescriptorType, PyObject_Type(op),

() => PyWrapperDescriptorType = IntPtr.Zero);

XDecref(op);

SetPyMember(ref PySuper_Type, PyObject_GetAttrString(builtins, "super"),

() => PySuper_Type = IntPtr.Zero);

XDecref(builtins);

}

op = PyString_FromString("string");

SetPyMember(ref PyStringType, PyObject_Type(op),

() => PyStringType = IntPtr.Zero);

XDecref(op);

op = PyUnicode_FromString("unicode");

SetPyMember(ref PyUnicodeType, PyObject_Type(op),

() => PyUnicodeType = IntPtr.Zero);

XDecref(op);

op = PyBytes_FromString("bytes");

SetPyMember(ref PyBytesType, PyObject_Type(op),

() => PyBytesType = IntPtr.Zero);

XDecref(op);

op = PyTuple_New(0);

SetPyMember(ref PyTupleType, PyObject_Type(op),

() => PyTupleType = IntPtr.Zero);

XDecref(op);

op = PyList_New(0);

SetPyMember(ref PyListType, PyObject_Type(op),

() => PyListType = IntPtr.Zero);

XDecref(op);

op = PyDict_New();

SetPyMember(ref PyDictType, PyObject_Type(op),

() => PyDictType = IntPtr.Zero);

XDecref(op);

op = PyInt_FromInt32(0);

SetPyMember(ref PyIntType, PyObject_Type(op),

() => PyIntType = IntPtr.Zero);

XDecref(op);

op = PyLong_FromLong(0);

SetPyMember(ref PyLongType, PyObject_Type(op),

() => PyLongType = IntPtr.Zero);

XDecref(op);

op = PyFloat_FromDouble(0);

SetPyMember(ref PyFloatType, PyObject_Type(op),

() => PyFloatType = IntPtr.Zero);

XDecref(op);

PyClassType = IntPtr.Zero;

PyInstanceType = IntPtr.Zero;

Error = new IntPtr(-1);

// Initialize data about the platform we're running on. We need

// this for the type manager and potentially other details. Must

// happen after caching the python types, above.

InitializePlatformData();

IntPtr dllLocal = IntPtr.Zero;

var loader = LibraryLoader.Get(OperatingSystem);

if (_PythonDll != "__Internal")

{

dllLocal = loader.Load(_PythonDll);

}

_PyObject_NextNotImplemented = loader.GetFunction(dllLocal, "_PyObject_NextNotImplemented");

PyModuleType = loader.GetFunction(dllLocal, "PyModule_Type");

if (dllLocal != IntPtr.Zero)

{

loader.Free(dllLocal);

}

// Initialize modules that depend on the runtime class.

AssemblyManager.Initialize();

PyCLRMetaType = MetaType.Initialize();

Exceptions.Initialize();

ImportHook.Initialize();

// Need to add the runtime directory to sys.path so that we

// can find built-in assemblies like System.Data, et. al.

string rtdir = RuntimeEnvironment.GetRuntimeDirectory();

IntPtr path = PySys_GetObject("path");

IntPtr item = PyString_FromString(rtdir);

PyList_Append(new BorrowedReference(path), item);

XDecref(item);

AssemblyManager.UpdatePath();

}

/// <summary>

/// Initializes the data about platforms.

///

/// This must be the last step when initializing the runtime:

/// GetManagedString needs to have the cached values for types.

/// But it must run before initializing anything outside the runtime

/// because those rely on the platform data.

/// </summary>

private static void InitializePlatformData()

{

#if !NETSTANDARD

IntPtr op;

IntPtr fn;

IntPtr platformModule = PyImport_ImportModule("platform");

IntPtr emptyTuple = PyTuple_New(0);

fn = PyObject_GetAttrString(platformModule, "system");

op = PyObject_Call(fn, emptyTuple, IntPtr.Zero);

string operatingSystemName = GetManagedString(op);

XDecref(op);

XDecref(fn);

fn = PyObject_GetAttrString(platformModule, "machine");

op = PyObject_Call(fn, emptyTuple, IntPtr.Zero);

string machineName = GetManagedString(op);

XDecref(op);

XDecref(fn);

XDecref(emptyTuple);

XDecref(platformModule);

// Now convert the strings into enum values so we can do switch

// statements rather than constant parsing.

OperatingSystemType OSType;

if (!OperatingSystemTypeMapping.TryGetValue(operatingSystemName, out OSType))

{

OSType = OperatingSystemType.Other;

}

OperatingSystem = OSType;

MachineType MType;

if (!MachineTypeMapping.TryGetValue(machineName.ToLower(), out MType))

{

MType = MachineType.Other;

}

Machine = MType;

#else

if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))

OperatingSystem = OperatingSystemType.Linux;

else if (RuntimeInformation.IsOSPlatform(OSPlatform.OSX))

OperatingSystem = OperatingSystemType.Darwin;

else if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))

OperatingSystem = OperatingSystemType.Windows;

else

OperatingSystem = OperatingSystemType.Other;

switch (RuntimeInformation.ProcessArchitecture)

{

case Architecture.X86:

Machine = MachineType.i386;

break;

case Architecture.X64:

Machine = MachineType.x86_64;

break;

case Architecture.Arm:

Machine = MachineType.armv7l;

break;

case Architecture.Arm64:

Machine = MachineType.aarch64;

break;

default:

Machine = MachineType.Other;

break;

}

#endif

}

internal static void Shutdown()

{

AssemblyManager.Shutdown();

Exceptions.Shutdown();

ImportHook.Shutdown();

Finalizer.Shutdown();

// TOOD: PyCLRMetaType's release operation still in #958

PyCLRMetaType = IntPtr.Zero;

ResetPyMembers();

Py_Finalize();

}

// called *without* the GIL acquired by clr._AtExit

internal static int AtExit()

{

lock (IsFinalizingLock)

{

IsFinalizing = true;

}

return 0;

}

private static void SetPyMember(ref IntPtr obj, IntPtr value, Action onRelease)

{

// XXX: For current usages, value should not be null.

PythonException.ThrowIfIsNull(value);

obj = value;

_pyRefs.Add(value, onRelease);

}

private static void ResetPyMembers()

{

_pyRefs.Release();

}

internal static IntPtr Py_single_input = (IntPtr)256;

internal static IntPtr Py_file_input = (IntPtr)257;

internal static IntPtr Py_eval_input = (IntPtr)258;

internal static IntPtr PyBaseObjectType;

internal static IntPtr PyModuleType;

internal static IntPtr PyClassType;

internal static IntPtr PyInstanceType;

internal static IntPtr PySuper_Type;

internal static IntPtr PyCLRMetaType;

internal static IntPtr PyMethodType;

internal static IntPtr PyWrapperDescriptorType;

internal static IntPtr PyUnicodeType;

internal static IntPtr PyStringType;

internal static IntPtr PyTupleType;

internal static IntPtr PyListType;

internal static IntPtr PyDictType;

internal static IntPtr PyIntType;

internal static IntPtr PyLongType;

internal static IntPtr PyFloatType;

internal static IntPtr PyBoolType;

internal static IntPtr PyNoneType;

internal static IntPtr PyTypeType;

internal static IntPtr Py_NoSiteFlag;

internal static IntPtr PyBytesType;

internal static IntPtr _PyObject_NextNotImplemented;

internal static IntPtr PyNotImplemented;

internal const int Py_LT = 0;

internal const int Py_LE = 1;

internal const int Py_EQ = 2;

internal const int Py_NE = 3;

internal const int Py_GT = 4;

internal const int Py_GE = 5;

internal static IntPtr PyTrue;

internal static IntPtr PyFalse;

internal static IntPtr PyNone;

internal static IntPtr Error;

public static PyObject None

{

get

{

var none = Runtime.PyNone;

Runtime.XIncref(none);

return new PyObject(none);

}

/// <summary>

/// Check if any Python Exceptions occurred.

/// If any exist throw new PythonException.

/// </summary>

/// <remarks>

/// Can be used instead of `obj == IntPtr.Zero` for example.

/// </remarks>

internal static void CheckExceptionOccurred()

{

if (PyErr_Occurred() != IntPtr.Zero)

{

throw new PythonException();

}

internal static IntPtr ExtendTuple(IntPtr t, params IntPtr[] args)

{

var size = PyTuple_Size(t);

int add = args.Length;

IntPtr item;

IntPtr items = PyTuple_New(size + add);

for (var i = 0; i < size; i++)

{

item = PyTuple_GetItem(t, i);

XIncref(item);

PyTuple_SetItem(items, i, item);

}

for (var n = 0; n < add; n++)

{

item = args[n];

XIncref(item);

PyTuple_SetItem(items, size + n, item);

}

return items;

}

internal static Type[] PythonArgsToTypeArray(IntPtr arg)

{

return PythonArgsToTypeArray(arg, false);

}

internal static Type[] PythonArgsToTypeArray(IntPtr arg, bool mangleObjects)

{

// Given a PyObject * that is either a single type object or a

// tuple of (managed or unmanaged) type objects, return a Type[]

// containing the CLR Type objects that map to those types.

IntPtr args = arg;

var free = false;

if (!PyTuple_Check(arg))

{

args = PyTuple_New(1);

XIncref(arg);

PyTuple_SetItem(args, 0, arg);

free = true;

}

var n = PyTuple_Size(args);

var types = new Type[n];

Type t = null;

for (var i = 0; i < n; i++)

{

IntPtr op = PyTuple_GetItem(args, i);

if (mangleObjects && (!PyType_Check(op)))

{

op = PyObject_TYPE(op);

}

ManagedType mt = ManagedType.GetManagedObject(op);

if (mt is ClassBase)

{

t = ((ClassBase)mt).type;

}

else if (mt is CLRObject)

{

object inst = ((CLRObject)mt).inst;

if (inst is Type)

{

t = inst as Type;

}

else

{

t = Converter.GetTypeByAlias(op);

}

if (t == null)

{

types = null;

break;

}

types[i] = t;

}

if (free)

{

XDecref(args);

}

return types;

}

/// <summary>

/// Managed exports of the Python C API. Where appropriate, we do

/// some optimization to avoid managed <--> unmanaged transitions

/// (mostly for heavily used methods).

/// </summary>

internal static unsafe void XIncref(IntPtr op)

{

#if PYTHON_WITH_PYDEBUG || NETSTANDARD

Py_IncRef(op);

return;

#else

var p = (void*)op;

if ((void*)0 != p)

{

if (Is32Bit)

{

(*(int*)p)++;

}

else

{

(*(long*)p)++;

}

#endif

}

/// <summary>

/// Increase Python's ref counter for the given object, and get the object back.

/// </summary>

internal static IntPtr SelfIncRef(IntPtr op)

{

XIncref(op);

return op;

}

internal static unsafe void XDecref(IntPtr op)

{

#if PYTHON_WITH_PYDEBUG || NETSTANDARD

Py_DecRef(op);

return;

#else

var p = (void*)op;

if ((void*)0 != p)

{

if (Is32Bit)

{

--(*(int*)p);

}

else

{

--(*(long*)p);

}

if ((*(int*)p) == 0)

{

// PyObject_HEAD: struct _typeobject *ob_type

void* t = Is32Bit

? (void*)(*((uint*)p + 1))

: (void*)(*((ulong*)p + 1));

// PyTypeObject: destructor tp_dealloc

void* f = Is32Bit

? (void*)(*((uint*)t + 6))

: (void*)(*((ulong*)t + 6));

if ((void*)0 == f)

{

return;

}

NativeCall.Impl.Void_Call_1(new IntPtr(f), op);

}

#endif

}

[Pure]

internal static unsafe long Refcount(IntPtr op)

{

var p = (void*)op;

if ((void*)0 == p)

{

return 0;

}

return Is32Bit ? (*(int*)p) : (*(long*)p);

}

/// <summary>

/// Export of Macro Py_XIncRef. Use XIncref instead.

/// Limit this function usage for Testing and Py_Debug builds

/// </summary>

/// <param name="ob">PyObject Ptr</param>

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern void Py_IncRef(IntPtr ob);

/// <summary>

/// Export of Macro Py_XDecRef. Use XDecref instead.

/// Limit this function usage for Testing and Py_Debug builds

/// </summary>

/// <param name="ob">PyObject Ptr</param>

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern void Py_DecRef(IntPtr ob);

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern void Py_Initialize();

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern void Py_InitializeEx(int initsigs);

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern int Py_IsInitialized();

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern void Py_Finalize();

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern IntPtr Py_NewInterpreter();

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern void Py_EndInterpreter(IntPtr threadState);

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern IntPtr PyThreadState_New(IntPtr istate);

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern IntPtr PyThreadState_Get();

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern IntPtr PyThread_get_key_value(IntPtr key);

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern int PyThread_get_thread_ident();

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern int PyThread_set_key_value(IntPtr key, IntPtr value);

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern IntPtr PyThreadState_Swap(IntPtr key);

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern IntPtr PyGILState_Ensure();

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern void PyGILState_Release(IntPtr gs);

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern IntPtr PyGILState_GetThisThreadState();

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

public static extern int Py_Main(

int argc,

[MarshalAs(UnmanagedType.CustomMarshaler, MarshalTypeRef = typeof(StrArrayMarshaler))] string[] argv

);

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern void PyEval_InitThreads();

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern int PyEval_ThreadsInitialized();

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern void PyEval_AcquireLock();

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern void PyEval_ReleaseLock();

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern void PyEval_AcquireThread(IntPtr tstate);

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern void PyEval_ReleaseThread(IntPtr tstate);

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern IntPtr PyEval_SaveThread();

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern void PyEval_RestoreThread(IntPtr tstate);

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern IntPtr PyEval_GetBuiltins();

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern IntPtr PyEval_GetGlobals();

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern IntPtr PyEval_GetLocals();

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern IntPtr Py_GetProgramName();

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern void Py_SetProgramName(IntPtr name);

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern IntPtr Py_GetPythonHome();

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern void Py_SetPythonHome(IntPtr home);

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern IntPtr Py_GetPath();

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern void Py_SetPath(IntPtr home);

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern IntPtr Py_GetVersion();

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern IntPtr Py_GetPlatform();

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern IntPtr Py_GetCopyright();

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern IntPtr Py_GetCompiler();

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern IntPtr Py_GetBuildInfo();

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern int PyRun_SimpleString(string code);

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern NewReference PyRun_String([MarshalAs(UnmanagedType.CustomMarshaler, MarshalTypeRef = typeof(Utf8Marshaler))] string code, IntPtr st, IntPtr globals, IntPtr locals);

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern IntPtr PyEval_EvalCode(IntPtr co, IntPtr globals, IntPtr locals);

/// <summary>

/// Return value: New reference.

/// This is a simplified interface to Py_CompileStringFlags() below, leaving flags set to NULL.

/// </summary>

internal static IntPtr Py_CompileString(string str, string file, int start)

{

return Py_CompileStringFlags(str, file, start, IntPtr.Zero);

}

/// <summary>

/// Return value: New reference.

/// This is a simplified interface to Py_CompileStringExFlags() below, with optimize set to -1.

/// </summary>

internal static IntPtr Py_CompileStringFlags(string str, string file, int start, IntPtr flags)

{

return Py_CompileStringExFlags(str, file, start, flags, -1);

}

/// <summary>

/// Return value: New reference.

/// Like Py_CompileStringObject(), but filename is a byte string decoded from the filesystem encoding(os.fsdecode()).

/// </summary>

/// <returns></returns>

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern IntPtr Py_CompileStringExFlags(string str, string file, int start, IntPtr flags, int optimize);

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern IntPtr PyImport_ExecCodeModule(string name, IntPtr code);

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern IntPtr PyCFunction_NewEx(IntPtr ml, IntPtr self, IntPtr mod);

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern IntPtr PyCFunction_Call(IntPtr func, IntPtr args, IntPtr kw);

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern IntPtr PyInstance_New(IntPtr cls, IntPtr args, IntPtr kw);

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern IntPtr PyInstance_NewRaw(IntPtr cls, IntPtr dict);

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern IntPtr PyMethod_New(IntPtr func, IntPtr self, IntPtr cls);

//====================================================================

// Python abstract object API

//====================================================================

/// <summary>

/// A macro-like method to get the type of a Python object. This is

/// designed to be lean and mean in IL & avoid managed <-> unmanaged

/// transitions. Note that this does not incref the type object.

/// </summary>

internal static unsafe IntPtr PyObject_TYPE(IntPtr op)

{

var p = (void*)op;

if ((void*)0 == p)

{

return IntPtr.Zero;

}

#if PYTHON_WITH_PYDEBUG

var n = 3;

#else

var n = 1;

#endif

return Is32Bit

? new IntPtr((void*)(*((uint*)p + n)))

: new IntPtr((void*)(*((ulong*)p + n)));

}

/// <summary>

/// Managed version of the standard Python C API PyObject_Type call.

/// This version avoids a managed <-> unmanaged transition.

/// This one does incref the returned type object.

/// </summary>

internal static IntPtr PyObject_Type(IntPtr op)

{

IntPtr tp = PyObject_TYPE(op);

XIncref(tp);

return tp;

}

internal static string PyObject_GetTypeName(IntPtr op)

{

IntPtr pyType = Marshal.ReadIntPtr(op, ObjectOffset.ob_type);

IntPtr ppName = Marshal.ReadIntPtr(pyType, TypeOffset.tp_name);

return Marshal.PtrToStringAnsi(ppName);

}

/// <summary>

/// Test whether the Python object is an iterable.

/// </summary>

internal static bool PyObject_IsIterable(IntPtr pointer)

{

var ob_type = Marshal.ReadIntPtr(pointer, ObjectOffset.ob_type);

IntPtr tp_iter = Marshal.ReadIntPtr(ob_type, TypeOffset.tp_iter);

return tp_iter != IntPtr.Zero;

}

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern int PyObject_HasAttrString(IntPtr pointer, string name);

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern IntPtr PyObject_GetAttrString(IntPtr pointer, string name);

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern int PyObject_SetAttrString(IntPtr pointer, string name, IntPtr value);

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern int PyObject_HasAttr(IntPtr pointer, IntPtr name);

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern IntPtr PyObject_GetAttr(IntPtr pointer, IntPtr name);

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern int PyObject_SetAttr(IntPtr pointer, IntPtr name, IntPtr value);

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern IntPtr PyObject_GetItem(IntPtr pointer, IntPtr key);

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern int PyObject_SetItem(IntPtr pointer, IntPtr key, IntPtr value);

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern int PyObject_DelItem(IntPtr pointer, IntPtr key);

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern IntPtr PyObject_GetIter(IntPtr op);

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern IntPtr PyObject_Call(IntPtr pointer, IntPtr args, IntPtr kw);

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern IntPtr PyObject_CallObject(IntPtr pointer, IntPtr args);

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern int PyObject_RichCompareBool(IntPtr value1, IntPtr value2, int opid);

internal static int PyObject_Compare(IntPtr value1, IntPtr value2)

{

int res;

res = PyObject_RichCompareBool(value1, value2, Py_LT);

if (-1 == res)

return -1;

else if (1 == res)

return -1;

res = PyObject_RichCompareBool(value1, value2, Py_EQ);

if (-1 == res)

return -1;

else if (1 == res)

return 0;

res = PyObject_RichCompareBool(value1, value2, Py_GT);

if (-1 == res)

return -1;

else if (1 == res)

return 1;

Exceptions.SetError(Exceptions.SystemError, "Error comparing objects");

return -1;

}

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern int PyObject_IsInstance(IntPtr ob, IntPtr type);

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern int PyObject_IsSubclass(IntPtr ob, IntPtr type);

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern int PyCallable_Check(IntPtr pointer);

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern int PyObject_IsTrue(IntPtr pointer);

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern int PyObject_Not(IntPtr pointer);

internal static long PyObject_Size(IntPtr pointer)

{

return (long)_PyObject_Size(pointer);

}

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl, EntryPoint = "PyObject_Size")]

private static extern IntPtr _PyObject_Size(IntPtr pointer);

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern IntPtr PyObject_Hash(IntPtr op);

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern IntPtr PyObject_Repr(IntPtr pointer);

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern IntPtr PyObject_Str(IntPtr pointer);

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl,

EntryPoint = "PyObject_Str")]

internal static extern IntPtr PyObject_Unicode(IntPtr pointer);

[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]

internal static extern IntPtr PyObject_Dir(IntPtr pointer);

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pythonnet/src/runtime/runtime.cs at drop-python2 · filmor/pythonnet · GitHub

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