Rewritten the Carbon model (#260)

1 files changed, 5 insertions, 2 deletions

diff --git a/opendc-compute/opendc-compute-simulator/src/main/java/org/opendc/compute/simulator/service/ComputeService.java b/opendc-compute/opendc-compute-simulator/src/main/java/org/opendc/compute/simulator/service/ComputeService.java
index 8df0d7d8..b6a69209 100644
--- a/opendc-compute/opendc-compute-simulator/src/main/java/org/opendc/compute/simulator/service/ComputeService.java
+++ b/opendc-compute/opendc-compute-simulator/src/main/java/org/opendc/compute/simulator/service/ComputeService.java
@@ -346,8 +346,11 @@ public final class ComputeService implements AutoCloseable {
 
     public void setTaskToBeRemoved(ServiceTask task) {
         this.tasksToRemove.add(task);
-        if ((tasksTerminated + tasksCompleted) == tasksExpected) {
-            metricReader.loggState(); // Logg the state for the final time. This will also delete all remaining tasks.
+        if ((this.tasksTerminated + this.tasksCompleted) == this.tasksExpected) {
+            if (this.metricReader != null) {
+                this.metricReader
+                        .loggState(); // Logg the state for the final time. This will also delete all remaining tasks.
+            }
         }
     }