re-entrant call to PyEval_RestoreT hread(context) hangs

[Paul]

following hangs when re-entered

run()
{
PyEval_RestoreT hread(context);

pName = PyString_FromSt ring(script);

Py_DECREF(pName );

context = PyEval_SaveThre ad();
}

This invokes a python script (using context[0])

The python script uses "swig" to call back into the run() method
The run() method now calls PyEval_RestoreT hread(context[1])

but this hangs

ie to summarise

C++ run() context0
-> .py
-> C++ run() context1 HANGS!

Can anyone suggest a solution for this?

[Greg Chapman]

On 26 Feb 2004 03:54:42 -0800, pc******@iel.ie (Paul) wrote:

following hangs when re-entered

run()
{
PyEval_RestoreT hread(context);

pName = PyString_FromSt ring(script);

Py_DECREF(pName );

context = PyEval_SaveThre ad();
}

This invokes a python script (using context[0])

The python script uses "swig" to call back into the run() method
The run() method now calls PyEval_RestoreT hread(context[1])

but this hangs

ie to summarise

C++ run() context0
-> .py
-> C++ run() context1 HANGS!

Can anyone suggest a solution for this?

I've never used SWIG, so I'm not sure if your run method is something for which
SWIG generates the actual C code or pseudocode you're using for example.
Anyway, if you're using 2.3, you can use the PyGILState API:

run()
{
PyGILState_STAT E state = PyGILState_Ensu re();

PyObject *pName = PyString_FromSt ring(script);

Py_XDECREF(pNam e);

PyGILState_Rele ase(state);
}

---
Greg Chapman