cleanup threadstate so that it removes the thread-local storage and cleans up…

cleanup threadstate so that it removes the thread-local storage and cleans up django database connections which are stored in thread-local.  fixes bug where it was leaking connections.

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@8193 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/mod/languages/mod_python/mod_python.c

@@ -176,11 +176,14 @@ static void eval_some_python(char *uuid, char *args, switch_core_session_t *sess
 		// or out .. thread state will currently be swapped in, and the SwapInThreadState 
 		// will be null
 		if (swapin_tstate == NULL) {
-		// swap it out
-		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Threadstate mod_python.c swap-out! \n");
-		// PyEval_ReleaseThread(cur_tstate);
-		swapin_tstate = (void *) PyEval_SaveThread();
-		switch_channel_set_private(channel, "SwapInThreadState", (void *) swapin_tstate);
+			// clear out threadstate
+			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "clear threadstate \n");
+			// we know we are swapped in because swapin_tstate is NULL, and therefore we have the GIL, so
+			// it is safe to call PyThreadState_Get.
+			PyThreadState *cur_tstate = PyThreadState_Get();
+			PyThreadState_Clear(cur_tstate);
+			PyEval_ReleaseThread(cur_tstate);
+			PyThreadState_Delete(cur_tstate); 
 		}
 		else {
 			// thread state is already swapped out, so, nothing for us to do
@@ -189,7 +192,7 @@ static void eval_some_python(char *uuid, char *args, switch_core_session_t *sess
 	}
 	else {
 		// they ran python script from cmd line, behave a bit differently (untested)
-	    switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Threadstate mod_python.c swap-out! \n");
+		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "No session: Threadstate mod_python.c swap-out! \n");
 		PyEval_ReleaseThread(tstate);
 	}