--- /dev/null	Wed Jul 21 17:06:42 2010
+++ new/test/gc/6581734/Test6581734.java	Wed Jul 21 17:06:42 2010
@@ -0,0 +1,164 @@
+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test Test6581734.java
+ * @bug 6581734
+ * @summary CMS Old Gen's collection usage is zero after GC which is incorrect
+ * @run main/othervm -server -Xmx512m -verbose:gc -XX:+UseConcMarkSweepGC Test6581734
+ *
+ */
+import java.util.*;
+import java.lang.management.*;
+
+// 6581734 states that memory pool usage via the mbean is wrong
+// for CMS (zero, even after a collection).
+//
+// 6580448 states that the collection count similarly is wrong
+// (stays at zero for CMS collections)
+// -- closed as dup of 6581734 as the same fix resolves both.
+
+
+public class Test6581734 {
+
+private String poolName = "CMS";
+private String collectorName = "ConcurrentMarkSweep";
+
+public static void main(String [] args) {
+
+	Test6581734 t = null;
+        if (args.length==2) {
+            t = new Test6581734(args[0], args[1]);
+        } else {
+            System.out.println("Defaulting to monitor CMS pool and collector.");
+            t = new Test6581734();
+        }
+	t.run();
+
+}
+
+public Test6581734(String pool, String collector) {
+    poolName = pool;
+    collectorName = collector;
+}
+public Test6581734() {
+}
+
+public void run() {
+
+        // Use some memory, enough that we expect collections should
+        // have happened.
+        // Must run with options to ensure no stop the world full GC, 
+        // but e.g. at least one CMS cycle.
+
+        allocationWork(300*1024*1024);
+        System.out.println("Done allocationWork");
+
+        // Verify some non-zero results are stored.
+
+		List<MemoryPoolMXBean> pools = 
+		    ManagementFactory.getMemoryPoolMXBeans();
+                int poolsFound = 0;
+                int poolsWithStats = 0;
+		for (int i=0; i<pools.size(); i++) {
+		    MemoryPoolMXBean pool = pools.get(i);
+		    String name = pool.getName();
+                    System.out.println("found pool: " + name);
+
+		    if (name.contains(poolName)) {
+		        long usage = pool.getCollectionUsage().getUsed();
+			System.out.println(name + ": usage after GC = " + usage);
+			poolsFound++;
+			if (usage > 0) {
+			    poolsWithStats++;
+                        }
+		    }
+		}	
+		if (poolsFound == 0) {
+		    throw new RuntimeException(
+                        "No matching memory pools found: test with -XX:+UseConcMarkSweepGC");
+		} 
+
+                List<GarbageCollectorMXBean> collectors =
+                    ManagementFactory.getGarbageCollectorMXBeans();
+                int collectorsFound = 0;
+                int collectorsWithTime= 0;
+                for (int i=0; i<collectors.size(); i++) {
+                    GarbageCollectorMXBean collector = collectors.get(i);
+                    String name = collector.getName();
+                    System.out.println("found collector: " + name);
+                    if (name.contains(collectorName)) {
+                        collectorsFound++;
+                        
+                        System.out.println(name + ": collection count = " 
+                            + collector.getCollectionCount());
+                        System.out.println(name + ": collection time  = " 
+                            + collector.getCollectionTime());
+                        if (collector.getCollectionCount() <= 0) {
+                          throw new RuntimeException("collection count <= 0");
+                        }
+                        if (collector.getCollectionTime() > 0) {
+                           collectorsWithTime++;
+                        }
+                    }
+                }
+        // verify:
+        if (poolsWithStats < poolsFound) {
+          throw new RuntimeException("pools found with zero stats");
+        } 
+        
+        if (collectorsWithTime<collectorsFound) {
+          throw new RuntimeException("collectors found with zero time");
+
+        }
+
+	System.out.println("Test passed.");
+}
+
+
+    public void allocationWork(long target) {
+
+        long sizeAllocated = 0;
+	List list = new LinkedList();
+	long delay = 50;
+        long count = 0;
+
+        while (sizeAllocated < target) {
+            int size = 1024*1024;
+
+            byte [] alloc = new byte[size];
+            if (count % 2 == 0) {
+                list.add(alloc);
+                sizeAllocated+=size;
+                System.out.print(".");
+                //System.out.println("allocated = " + sizeAllocated + " target = " + target);
+            }
+
+            try { Thread.sleep(delay); } catch (InterruptedException ie) { }
+            count++;
+        }
+    }
+
+
+
+}