Misc fixes from issues

• Fixed bug when calculating deadlines for algorithms where the ALAP schedule contained laps.

• Replaced all startswith checks with isinstance for operations.

• Updated SchedulingGUI to show "∞" instead of maximum integer for forward and backward slack.

• Added enforcing of execution time in ListScheduler and added test to check that latency-offsets and execution times will raise Exceptions if missing.

• Updated ALAP scheduler to adjust scheduling time if a "gap" appears in the start of the schedule.

Closes: #324 (closed) #322 (closed) #318 (closed) #277 (closed) #327 (closed)

b_asic/scheduler_gui/main_window.py

@@ -916,18 +916,20 @@ class ScheduleMainWindow(QMainWindow, Ui_MainWindow):
 
         self.info_table.insertRow(si)
         self.info_table.setItem(si, 0, QTableWidgetItem("Forward slack"))
-        self.info_table.setItem(
-            si, 1, QTableWidgetItem(str(self.schedule.forward_slack(graph_id)))
-        )
+        forward_slack = self.schedule.forward_slack(graph_id)
+        if forward_slack < sys.maxsize:
+            self.info_table.setItem(si, 1, QTableWidgetItem(str(forward_slack)))
+        else:
+            self.info_table.setItem(si, 1, QTableWidgetItem("∞"))
         si += 1
 
         self.info_table.insertRow(si)
         self.info_table.setItem(si, 0, QTableWidgetItem("Backward slack"))
-        self.info_table.setItem(
-            si,
-            1,
-            QTableWidgetItem(str(self.schedule.backward_slack(graph_id))),
-        )
+        backward_slack = self.schedule.backward_slack(graph_id)
+        if backward_slack < sys.maxsize:
+            self.info_table.setItem(si, 1, QTableWidgetItem(str(backward_slack)))
+        else:
+            self.info_table.setItem(si, 1, QTableWidgetItem("∞"))
         si += 1
 
     def info_table_clear(self) -> None: