LoadBuiltinModule(string name)
{
IntPtr initFP = Unmanaged.GetProcAddress(this.library, "init" + name);
PydInit_Delegate init = (PydInit_Delegate)Marshal.GetDelegateForFunctionPointer(initFP, typeof(PydInit_Delegate));
init();
}
Load(string path)
{
// the ActCtx stuff allows us to import .pyds which link to msvcr90 but don't have manifests
// implementation explained in stub/ic_msvcr90.c
IntPtr cookie = Unmanaged._Py_ActivateActCtx();
IntPtr l = Unmanaged.LoadLibrary(path);
Unmanaged._Py_DeactivateActCtx(cookie);
if (l == IntPtr.Zero)
{
throw new Exception(
String.Format("Could not load library '{0}' . Error code:{1}", path, Unmanaged.GetLastError()));
}
this.handles.Add(l);
string funcName = "init" + Path.GetFileNameWithoutExtension(path);
IntPtr funcPtr = Unmanaged.GetProcAddress(l, funcName);
if (funcPtr == IntPtr.Zero)
{
throw new Exception(
String.Format("Could not find module init function {0} in dll {1}", funcName, path));
}
PydInit_Delegate initmodule = (PydInit_Delegate)Marshal.GetDelegateForFunctionPointer(
funcPtr, typeof(PydInit_Delegate));
initmodule();
}
Init(dgt_getfuncptr addressGetter, dgt_registerdata dataSetter)
{
IntPtr initFP = Unmanaged.GetProcAddress(this.library, "init");
InitDelegate initDgt = (InitDelegate)Marshal.GetDelegateForFunctionPointer(initFP, typeof(InitDelegate));
IntPtr addressGetterFP = Marshal.GetFunctionPointerForDelegate(addressGetter);
IntPtr dataSetterFP = Marshal.GetFunctionPointerForDelegate(dataSetter);
initDgt(addressGetterFP, dataSetterFP);
// yes, these do appear to be necessary: rare NullReferenceExceptions will be thrown
// from the initDgt call otherwise. run functionalitytest in a loop to observe.
GC.KeepAlive(addressGetter);
GC.KeepAlive(dataSetter);
}