internal static SlotsHolder SetupMetaSlots(Type impl, IntPtr type)
{
// Override type slots with those of the managed implementation.
SlotsHolder slotsHolder = new SlotsHolder(type);
InitializeSlots(type, impl, slotsHolder);
// We need space for 3 PyMethodDef structs.
int mdefSize = (MetaType.CustomMethods.Length + 1) * Marshal.SizeOf(typeof(PyMethodDef));
IntPtr mdef = Runtime.PyMem_Malloc(mdefSize);
IntPtr mdefStart = mdef;
foreach (var methodName in MetaType.CustomMethods)
{
mdef = AddCustomMetaMethod(methodName, type, mdef, slotsHolder);
}
mdef = WriteMethodDefSentinel(mdef);
Debug.Assert((long)(mdefStart + mdefSize) <= (long)mdef);
Marshal.WriteIntPtr(type, TypeOffset.tp_methods, mdefStart);
// XXX: Hard code with mode check.
if (Runtime.ShutdownMode != ShutdownMode.Reload)
{
slotsHolder.Set(TypeOffset.tp_methods, (t, offset) =>
{
var p = Marshal.ReadIntPtr(t, offset);
Runtime.PyMem_Free(p);
Marshal.WriteIntPtr(t, offset, IntPtr.Zero);
});
}
return(slotsHolder);
}
public void Dispose()
{
if (_disposed)
{
return;
}
_disposed = true;
Runtime.XDecref(ptr);
if (mdef != IntPtr.Zero)
{
Runtime.PyMem_Free(mdef);
mdef = IntPtr.Zero;
}
}
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;
}
}