Re: [Quickfix-developers] QuickFIX Python and Twisted

[Oren M. <or...@qu...>]

We should be able to use Py_BLOCK_THREADS and Py_UNBLOCK_THREADS.   
The _save variable will need to be global and protected.

--oren

On Nov 15, 2006, at 5:15 PM, Robert Parrott wrote:

> BTW, looking at these macro definitions, it isn't as easy as inserting
> the macros directly, since there are defined to be used in pairs,
> before and after. Instead, for the callbacks there will need to be
> either explicit code or new macros:
>
> (from ceval.h of python 2.3 )
>
> PyAPI_FUNC(void) PyEval_InitThreads(void);
> PyAPI_FUNC(void) PyEval_AcquireLock(void);
> PyAPI_FUNC(void) PyEval_ReleaseLock(void);
> PyAPI_FUNC(void) PyEval_AcquireThread(PyThreadState *tstate);
> PyAPI_FUNC(void) PyEval_ReleaseThread(PyThreadState *tstate);
> PyAPI_FUNC(void) PyEval_ReInitThreads(void);
>
> #define Py_BEGIN_ALLOW_THREADS { \
> 			PyThreadState *_save; \
> 			_save = PyEval_SaveThread();
> #define Py_BLOCK_THREADS	PyEval_RestoreThread(_save);
> #define Py_UNBLOCK_THREADS	_save = PyEval_SaveThread();
> #define Py_END_ALLOW_THREADS	PyEval_RestoreThread(_save); \
> 		 }