Merge pull request #7829 from omoerbeek/backport-7790

auth backport 7790 to 4.1.x: Minimal fix to avoid busy looping on lots of notifies.
PowerDNS · May 28, 2019 · a3f73e5 · a3f73e5
2 parents c886fa5 + 6fed602
commit a3f73e5
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/pdns/communicator.cc b/pdns/communicator.cc
@@ -136,7 +136,10 @@ void CommunicatorClass::mainloop(void)
           if (extraSlaveRefresh)
             slaveRefresh(&P);
         }
-        else { 
+        else {
+          // eat up extra posts to avoid busy looping if many posts were done
+          while (d_any_sem.tryWait() == 0) {
+          }
           break; // something happened
         }
         // this gets executed at least once every second