Hello, I'm trying to call Python routines from C/C++. These routines must intereact in a multi-thread environment. I mean that routine A will loop waiting for a condition of routine B.
This condition are coded in C so I don't need routine A running in the same interpreter of routine B. I tried using: PyEval_AcquireLock(); PyInterpreterState* mainInterpreterState = mainThreadState->interp; PyThreadState * myThreadState = PyThreadState_New(mainInterpreterState); PyThreadState_Swap(myThreadState); ... Call Python code here PyThreadState_Swap(NULL); PyEval_ReleaseLock(); Obviosly, I called thread initialization code in the main thread like http://www.linuxjournal.com/article/3641 The problem with this code is that I hold the interpreter lock when calling routine A or B so they cannot run simultaneous and that is a requierement for me (as I explained before). It executes some code of the routine I called but then it hungs. If I release the lock before calling the Python code it doesn´t work neither somhow. Then I tried to create an interpreter for each thread. It is not desirable but it's acceptable: PyEval_AcquireLock(); PyThreadState* myThreadState = Py_NewInterpreter(); PyThreadState_Swap(myThreadState); PyEval_ReleaseLock(); ... Call Python code here PyEval_AcquireLock(); PyThreadState_Swap(NULL); Py_EndInterpreter(myThreadState); PyEval_ReleaseLock(); But it doesn't work. It seems that it requieres to take the lock to call Python code. If I comment the PyEval_ReleaseLock line and PyEval_AcquireLock pair it calls other threads before hunging. I saw some threads talking about some similar situations and I saw no answer to this. This issue remains unsolved? Thanks on advance, Pablo -- http://www.nektra.com
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