Added a wakeup() method that allows us to ping the Logger thread to resume

running immediately. Also decreased the sleep interval to 250 millis, so logging
output should be more fluent now.
Reformatted innger GZipper class.

src/helma/util/Logger.java

@@ -280,7 +280,6 @@ public final class Logger {
 	}
     }
 
-
     /**
      *  Return a list of all active Loggers
      */
@@ -290,6 +289,14 @@ public final class Logger {
 	return (List) loggers.clone ();
     }
 
+    /** 
+     *  Notify the runner thread that it should wake up and run.
+     */
+    public static void wakeup () {
+	if (runner != null)
+	    runner.wakeup ();
+    }
+
     private static void rotateAllLogs () {
 	int nloggers = loggers.size();
 	for (int i=nloggers-1; i>=0; i--) {
@@ -307,7 +314,7 @@ public final class Logger {
      */
     static class Runner extends Thread {
 
-	public void run () {
+	public synchronized void run () {
 	    long nextMidnight = nextMidnight ();
 	    while (runner == this  && !isInterrupted ()) {
 	        if (nextMidnight < System.currentTimeMillis ()) {
@@ -327,12 +334,19 @@ public final class Logger {
 	                System.err.println ("Error in Logger main loop: "+x);
 	            }
 	        }
+	        // if there are no active logs, exit logger thread
+	        if (loggers.size() == 0)
+	            return;
 	        try {
-	            sleep (500);
+	            wait (250);
 	        } catch (InterruptedException ix) {}
 	    }
 	}
 	
+	public synchronized void wakeup () {
+	    notifyAll ();
+	}
+
     }
 
     /**