Close window of missing clock action on a heavily loaded system.

The clock thread may not wake up during the daily pause
and daily resume minute, and when it does not, the corresponding
wall clock action will be missed.

The fix is in checkout the time of operations every time the
clock thread wakes up.

There is no longer need for the clock to wake up in the middle of
a wall clock minute.  So we improved the user experience by waking
up this thread at the beginning of every minute.

src/main/java/altk/comm/engine/Broadcast.java

@@ -1021,6 +1021,7 @@ public abstract class Broadcast
 	protected String resume(String reason) {
 		if (reason == ACTION_BY_CLOCK) {
 			boolean inAcceptqble = false;
+			if (this.reason == null) return null;
 			for (String acceptable  : getPauseModesResumableByClock()) {
 				if (this.reason.equalsIgnoreCase(acceptable)) inAcceptqble = true;
 			}
@@ -1437,6 +1438,8 @@ public abstract class Broadcast
 		if (state == BroadcastState.ABORTED) return;
 		if (!withinOperatingHours()) {
 			pause(ACTION_BY_CLOCK, null);
+		} else {
+			resume(ACTION_BY_CLOCK, null);
 		}
 	}
 

src/main/java/altk/comm/engine/CommEngine.java

@@ -95,25 +95,15 @@ public abstract class CommEngine extends HttpServlet
 		{
 			while (!threadShouldStop)
 			{
-		    	String timeOfDay = LocalTime.now().format(DateTimeFormatter.ofPattern("HH:mm"));
 		    	// Check for pause
 				for (Broadcast broadcast : broadcasts.values())
-				{;
-			    	// Check for pause
-					if (broadcast.daily_stop.length() > 0)
-					{
-						if (timeOfDay.equals(broadcast.daily_stop)) broadcast.pause("clock", null);
-					}
-
-			    	// Check for resume
-					if (broadcast.daily_start.length() > 0)
-					{
-						if (timeOfDay.equals(broadcast.daily_start)) broadcast.resume(Broadcast.ACTION_BY_CLOCK);
-					}
+				{
+					broadcast.enforceOperationHours();
 				}
 
+				// sleep till next wall clock minute
 				long currentTime = System.currentTimeMillis();
-				long sleepTime = 60000 + 30000 - currentTime % 60000;
+				long sleepTime = 60000 - currentTime % 60000;
 				if (sleepTime > 0)
 				{
 					try