Scheduler: Don't hang when starting an empty graph

fair-acc · Oct 1, 2024 · b77c2ca · b77c2ca
1 parent aa1ec79
commit b77c2ca
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/core/include/gnuradio-4.0/Scheduler.hpp b/core/include/gnuradio-4.0/Scheduler.hpp
@@ -246,7 +246,9 @@ class SchedulerBase : public Block<Derived> {
             for (std::size_t runnerID = 0UZ; runnerID < _jobLists->size(); runnerID++) {
                 _pool->execute([this, runnerID]() { static_cast<Derived*>(this)->poolWorker(runnerID, _jobLists); });
             }
-            _nRunningJobs.wait(0UZ, std::memory_order_acquire); // waits until at least one pool worker started
+            if (!_jobLists->empty()) {
+                _nRunningJobs.wait(0UZ, std::memory_order_acquire); // waits until at least one pool worker started
+            }
         }
     }