Using thread to determine running, isntead of Popen.

boxmox/experiment.py

@@ -114,6 +114,7 @@ class Experiment:
         self.lastLog     = None
 
         self.pid         = None
+        self.thread      = None
 
         self.__new()
 
@@ -192,10 +193,10 @@ class Experiment:
         '''
         Check if simulation is running (if started with asynchronous=True).
         '''
-        if self.pid is None:
+        if self.thread is None:
             return False
         else:
-            return self.pid.poll() is None
+            return self.thread.isAlive()
 
     def _run(self, dumbOutput=False):
         try:
@@ -225,8 +226,8 @@ class Experiment:
         os.chdir(self.path)
 
         if asynchronous:
-            thread = threading.Thread(target=self._run, args=(dumbOutput,))
-            thread.start()
+            self.thread = threading.Thread(target=self._run, args=(dumbOutput,))
+            self.thread.start()
             os.chdir(pwd)
             return
         else:
@@ -320,6 +321,7 @@ class ExperimentFromExample(Experiment):
         self.lastLog     = None
 
         self.pid         = None
+        self.thread      = None
 
         self.input       = {}
         self.output      = {}
@@ -362,6 +364,7 @@ class ExperimentFromExistingRun(Experiment):
         self.lastLog     = None
 
         self.pid         = None
+        self.thread      = None
 
         self.input       = {}
         self.output      = {}