[mauso]

Hi,

Implementing C++ extension that makes callbacks to a function in a python module.

In pys60 1.4.5 with S60 3rd FP1 these thread-state functions around the callback seem to work with no problem:

PyEval_RestoreThread( PYTHON_TLS->thread_state );
...
PyEval_SaveThread();

But on 1.9.2 with S60 5th the code won't build with those lines. Commenting them out makes it build succesfully but the python runtime at emulator crashes when the callback in the extension code is reached.

Have the PyEval_RestoreThread and/or PyEval_SaveThread functions changed between 1.4.5. and 1.9.2 (or python 2.2 and 2.5 respectively)? Any workarounds?

[haviital]

Try this:

Py_Initialize();
PyEval_InitThreads();
...
Py_Finalize();

[ashwinurao]

Originally Posted by mauso

Hi,

Implementing C++ extension that makes callbacks to a function in a python module.

In pys60 1.4.5 with S60 3rd FP1 these thread-state functions around the callback seem to work with no problem:

PyEval_RestoreThread( PYTHON_TLS->thread_state );
...
PyEval_SaveThread();

But on 1.9.2 with S60 5th the code won't build with those lines. Commenting them out makes it build succesfully but the python runtime at emulator crashes when the callback in the extension code is reached.

Have the PyEval_RestoreThread and/or PyEval_SaveThread functions changed between 1.4.5. and 1.9.2 (or python 2.2 and 2.5 respectively)? Any workarounds?

Yes. We don't need to maintain the thread state anymore explicitly. We leave all the dirty work to the interpreter. Do a direct replace as shown below :

PyEval_RestoreThread( PYTHON_TLS->thread_state ) --> PyGILState_STATE gstate = PyGILState_Ensure();

PyEval_SaveThread() --> PyGILState_Release(gstate);

[mahesh.sayibabu]

Originally Posted by mauso

Hi,

Implementing C++ extension that makes callbacks to a function in a python module.

In pys60 1.4.5 with S60 3rd FP1 these thread-state functions around the callback seem to work with no problem:

PyEval_RestoreThread( PYTHON_TLS->thread_state );
...
PyEval_SaveThread();

But on 1.9.2 with S60 5th the code won't build with those lines. Commenting them out makes it build succesfully but the python runtime at emulator crashes when the callback in the extension code is reached.

Have the PyEval_RestoreThread and/or PyEval_SaveThread functions changed between 1.4.5. and 1.9.2 (or python 2.2 and 2.5 respectively)? Any workarounds?

Refer to the file, PyS60_1_9_x_README.txt under the src directory. The section "6.2 Porting PyS601.4.x extensions to PyS601.9.x" explains the changes that needs to be done for porting modules to 1.9.x.

=======
Mahesh
PyS60 Team

[mauso]

Thanks for good&quick answers, problems solved so far