Failure not to wait for the same event that the victim does. If the victim...

Failure not to wait for the same event that the victim does. If the victim happened to take it first and reset it then it would lead to unexpected behaviour

dream/simulation/Failure.py

@@ -113,19 +113,21 @@ class Failure(ObjectInterruption):
             elif self.deteriorationType=='onShift':
                 while failureNotTriggered:
                     timeRestartedCounting=self.env.now
-                    # TODO: can also wait for interruptionStart signal of the victim and check whether the interruption is caused by a shiftScheduler
-                    receivedEvent=yield self.env.timeout(remainingTimeToFailure) | self.victim.interruptionStart 
+                    self.isWaitingForVictimOffShift=True                   
+                    receivedEvent=yield self.env.timeout(remainingTimeToFailure) | self.victimOffShift 
                     # the failure should receive a signal if there is a shift-off triggered
-                    if self.victim.interruptionStart in receivedEvent:
-                        # TODO: the signal interruptionStart is reset by the time it is received by the victim. not sure if will be still triggered when it is checked here 
+                    if self.victimOffShift in receivedEvent:
                         assert self.victim.onShift==False, 'shiftFailure cannot recalculate TTF if the victim is onShift'
-                        remainingTimeToFailure=remainingTimeToFailure-(self.env.now-timeRestartedCounting)
-    
+                        self.victimOffShift=self.env.event()
+                        remainingTimeToFailure=remainingTimeToFailure-(self.env.now-timeRestartedCounting)   
                         # wait for the shift to start again
+                        self.isWaitingForVictimonShift=True
                         yield self.victim.interruptionEnd
+                        self.isWaitingForVictimonShift=False
+                        self.victimOnShift=self.env.event()
                         assert self.victim.onShift==True, 'the victim of shiftFailure must be onShift to continue counting the TTF'
-                        # TODO: the signal interruptionStart is reset by the time it is received by the victim. not sure if will be still triggered when it is checked here
                     else:
+                        self.isWaitingForVictimOffShift=False
                         failureNotTriggered=False
             # if time to failure counts only in working time
             elif self.deteriorationType=='working':

dream/simulation/ObjectInterruption.py

@@ -43,6 +43,12 @@ class ObjectInterruption(object):
         from Globals import G
         self.env=G.env
         self.call=False
+        # events that are send by the ShiftScheduler to all the other interruptions that might wait for them
+        self.victimOffShift=self.env.event()
+        self.victimOnShift=self.env.event()
+        # flags that show if the interruption waits for the event
+        self.isWaitingForVictimOffShift=False
+        self.isWaitingForVictimOnShift=False
     
     #===========================================================================
     # the main process of the core object

dream/simulation/ShiftScheduler.py

@@ -74,6 +74,12 @@ class ShiftScheduler(ObjectInterruption):
             if not self.victim.onShift:
                 yield self.env.timeout(float(self.remainingShiftPattern[0][0]-self.env.now))    # wait for the onShift
                 self.reactivateVictim()                 # re-activate the victim in case it was interrupted
+                
+                # if the victim has interruptions that measure only the on-shift time, they have to be notified
+                for oi in self.victim.objectInterruptions:
+                    if oi.isWaitingForVictimOnShift:
+                        oi.victimOnShift.succeed()
+                        
                 self.victim.totalOffShiftTime+=self.env.now-self.victim.timeLastShiftEnded
                 self.victim.onShift=True
                 self.victim.timeLastShiftStarted=self.env.now
@@ -93,6 +99,11 @@ class ShiftScheduler(ObjectInterruption):
                     yield self.victim.endedLastProcessing   
                     self.victim.endedLastProcessing=self.env.event()                
 
+                # if the victim has interruptions that measure only the on-shift time, they have to be notified
+                for oi in self.victim.objectInterruptions:
+                    if oi.isWaitingForVictimOffShift:
+                        oi.victimOffShift.succeed()
+
                 # interrupt the victim only if it was not previously interrupted
                 if not self.victim.interruptionStart.triggered:
                     self.interruptVictim()                      # interrupt the victim