pythonnet/src/runtime/methodwrapper.cs at master · RXDSolutions/pythonnet · GitHub

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using System;

namespace Python.Runtime

{

/// <summary>

/// A MethodWrapper wraps a static method of a managed type,

/// making it callable by Python as a PyCFunction object. This is

/// currently used mainly to implement special cases like the CLR

/// import hook.

/// </summary>

internal class MethodWrapper

{

public IntPtr mdef;

public IntPtr ptr;

private bool _disposed = false;

private ThunkInfo _thunk;

public MethodWrapper(Type type, string name, string funcType = null)

{

// Turn the managed method into a function pointer

_thunk = Interop.GetThunk(type.GetMethod(name), funcType);

// Allocate and initialize a PyMethodDef structure to represent

// the managed method, then create a PyCFunction.

mdef = Runtime.PyMem_Malloc(4 * IntPtr.Size);

TypeManager.WriteMethodDef(mdef, name, _thunk.Address, 0x0003);

ptr = Runtime.PyCFunction_NewEx(mdef, IntPtr.Zero, IntPtr.Zero);

}

public IntPtr Call(IntPtr args, IntPtr kw)

{

return Runtime.PyCFunction_Call(ptr, args, kw);

}

public void Release()

{

if (_disposed)

{

return;

}

_disposed = true;

bool freeDef = Runtime.Refcount(ptr) == 1;

Runtime.XDecref(ptr);

if (freeDef && mdef != IntPtr.Zero)

{

Runtime.PyMem_Free(mdef);

mdef = IntPtr.Zero;

}

pythonnet/src/runtime/methodwrapper.cs at master · RXDSolutions/pythonnet · GitHub

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