Merge pull request #764 in B2/basf2 from feature/DQM-clear-histomem-r…

…elease-06-01-cherry-pick to release/06-01

* commit 'd5c19f7ac0a61715c95565f9fface6f74a728da8':
  Clears TMemFile on each worker also at START.
  * DQM histogram memory is cleared at START.

daq/expreco/src/ERecoEventProcessor.cc

@@ -199,6 +199,11 @@ int ERecoEventProcessor::UnConfigure(NSMmsg*, NSMcontext*)
 
 int ERecoEventProcessor::Start(NSMmsg* nsmm, NSMcontext* nsmc)
 {
+  // Clear DQM histogram memory
+  char cmdline[] = "hsendcommand DQMRC:CLEAR localhost 10391";
+  system(cmdline);
+  printf("ERecoEventProcessor : DQM TMemFile cleared\n");
+
   string rbufin = string(m_conf->getconf("system", "unitname")) + ":" +
                   string(m_conf->getconf("processor", "ringbufin"));
   string rbufout = string(m_conf->getconf("system", "unitname")) + ":" +

daq/expreco/src/ERecoMasterCallback.cc

@@ -328,6 +328,10 @@ void ERecoMasterCallback::start(int expno, int runno)
       perform(NSMCommunicator::select(30));
     } catch (const TimeoutException& e) {}
   }
+  char cmdline[] = "hsendcommand DQMRC:CLEAR erctl 9991";
+  system(cmdline);
+  printf("ERecoMaster : DQM TMemFile cleared\n");
+
   if (m_callback != NULL)
     m_callback->setState(RCState::RUNNING_S);
   RCCallback::setState(RCState::RUNNING_S);