From 8985bd5cbc7501a6bbf4aefd66e4ed4dce26f55c Mon Sep 17 00:00:00 2001
From: Peguen <73380451+Peguen@users.noreply.github.com>
Date: Wed, 2 Oct 2024 16:44:06 +0200
Subject: [PATCH] [Python] Fix deadlock: call_method in service now allows
 threads. (#1760)

If service and client are located in the same process, the previous implementation of `call_method` caused deadlocks due to the GIL.
---
 lang/python/core/src/ecal_wrap.cxx | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lang/python/core/src/ecal_wrap.cxx b/lang/python/core/src/ecal_wrap.cxx
index 91d0214418..a601493032 100644
--- a/lang/python/core/src/ecal_wrap.cxx
+++ b/lang/python/core/src/ecal_wrap.cxx
@@ -1120,7 +1120,9 @@ PyObject* client_call_method(PyObject* /*self*/, PyObject* args)   // (client_ha
   PyArg_ParseTuple(args, "nsy#i", &client_handle, &method_name, &request, &request_len, &timeout);
 
   bool called_method{ false };
-  called_method = client_call_method(client_handle, method_name, request, (int)request_len, timeout);
+  Py_BEGIN_ALLOW_THREADS
+    called_method = client_call_method(client_handle, method_name, request, (int)request_len, timeout);
+  Py_END_ALLOW_THREADS
 
   return(Py_BuildValue("i", called_method));
 }