[Grapevine-cvs-commits] cvs: grapevine /raisen/grapevine version.xml /test-client Universe.java

[blackh <gra...@li...>]

blackh		Sun Nov 30 22:27:10 2003 EDT

  Modified files:              
    /grapevine/raisen/grapevine	version.xml 
    /grapevine/test-client	Universe.java 
  Log:
  
  
Index: grapevine/test-client/Universe.java
diff -u grapevine/test-client/Universe.java:1.3 grapevine/test-client/Universe.java:1.4
--- grapevine/test-client/Universe.java:1.3	Mon Nov  4 02:51:53 2002
+++ grapevine/test-client/Universe.java	Sun Nov 30 22:27:10 2003
@@ -39,6 +39,9 @@
     listeners.remove(listener);
   }
 
+  private static final int maxThreads = 6;
+  private int noOfThreads;
+
   public void run()
   {
     try {
@@ -53,10 +56,17 @@
             toVisit.wait();
           for (int i = 0; i < toVisit.size(); i++) {
             final Node node = (Node) toVisit.elementAt(i);
+              // Hold off if there are too many threads running at once.
+            while (noOfThreads > maxThreads)
+              toVisit.wait();
             new Thread() {
               public void run()
               {
                 try {
+                  synchronized (toVisit) {
+                    noOfThreads++;
+                  }
+
                     // Retrieve the neighbours from the network
                   System.out.println("Retrieving neighbours for " + node);
                   List neighbours = node.getNeighbours();
@@ -75,6 +85,12 @@
                 }
                 catch (IOException e) {
                   System.err.println(e.toString());
+                }
+                finally {
+                  synchronized (toVisit) {
+                    noOfThreads--;
+                    toVisit.notify();
+                  }
                 }
               }
             }.start();