2006-07-04 Andrew John Hughes <gnu_andrew@member.fsf.org>

	* NEWS:	Updated.
	* doc/vmintegration.texinfo: Likewise.
	* examples/gnu/classpath/examples/management/TestMemoryPool.java,
	* gnu/java/lang/management/MemoryPoolMXBeanImpl.java:
	New files.
	* java/lang/management/ManagementFactory.java:
	(getMemoryPoolMXBeans()): Implemented.
	* vm/reference/gnu/java/lang/management/VMMemoryPoolMXBeanImpl.java,
	* vm/reference/java/lang/management/VMManagementFactory.java:
	New files.

1 files changed, 93 insertions, 0 deletions

diff --git a/examples/gnu/classpath/examples/management/TestMemoryPool.java b/examples/gnu/classpath/examples/management/TestMemoryPool.java
new file mode 100644
index 000000000..2476ed76f
--- /dev/null
+++ b/examples/gnu/classpath/examples/management/TestMemoryPool.java
@@ -0,0 +1,93 @@
+/* TestMemoryPool.java -- Tests the memory pool beans.
+   Copyright (C) 2006 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath examples.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath 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 for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA. */
+
+package gnu.classpath.examples.management;
+
+import java.lang.management.ManagementFactory;
+import java.lang.management.MemoryPoolMXBean;
+import java.lang.management.MemoryUsage;
+
+import java.util.Arrays;
+import java.util.Iterator;
+
+public class TestMemoryPool
+{
+
+  /**
+   * 1mb in bytes
+   */
+  private static final int MB = 1 << 20;
+
+  public static void main(String[] args)
+  {
+    Iterator beans = ManagementFactory.getMemoryPoolMXBeans().iterator();
+    while (beans.hasNext())
+      {
+	MemoryPoolMXBean bean = (MemoryPoolMXBean) beans.next();
+	System.out.println("Bean: " + bean);
+	System.out.println("Name: " + bean.getName());
+	System.out.println("Collection usage: " + bean.getCollectionUsage());
+	boolean collectionUsage = bean.isCollectionUsageThresholdSupported();
+	System.out.println("Collection usage threshold supported: " 
+			   + collectionUsage);
+	if (collectionUsage)
+	  {
+	    System.out.println("Collection usage threshold: " 
+			       + bean.getCollectionUsageThreshold());
+	    System.out.println("Setting collection usage threshold to 1MB (" 
+			       + MB + " bytes)");
+	    bean.setCollectionUsageThreshold(MB);
+	    System.out.println("Collection usage threshold: " 
+			       + bean.getCollectionUsageThreshold());
+	    System.out.println("Collection usage threshold count: " 
+			       + bean.getCollectionUsageThresholdCount());
+	    System.out.println("Collection usage threshold exceeded: " 
+			       + (bean.isCollectionUsageThresholdExceeded()
+				  ? "yes" : "no"));
+	  }
+	System.out.println("Memory manager names: " 
+			   + Arrays.toString(bean.getMemoryManagerNames()));
+	System.out.println("Peak usage: " + bean.getPeakUsage());
+	System.out.println("Current usage: " + bean.getUsage());
+	System.out.println("Resetting peak usage...");
+	bean.resetPeakUsage();
+	System.out.println("Peak usage: " + bean.getPeakUsage());
+	System.out.println("Current usage: " + bean.getUsage());
+	boolean usage = bean.isUsageThresholdSupported();
+	System.out.println("Usage threshold supported: " + usage);
+	if (usage)
+	  {
+	    System.out.println("Usage threshold: " 
+			       + bean.getUsageThreshold());
+	    System.out.println("Setting usage threshold to 1MB (" 
+			       + MB + " bytes)");
+	    bean.setUsageThreshold(MB);
+	    System.out.println("Usage threshold: " 
+			       + bean.getUsageThreshold());
+	    System.out.println("Usage threshold count: " 
+			       + bean.getUsageThresholdCount());
+	    System.out.println("Usage threshold exceeded: " 
+			       + (bean.isUsageThresholdExceeded()
+				  ? "yes" : "no"));
+	  }
+	System.out.println("Valid: " + (bean.isValid() ? "yes" : "no"));
+      }
+  }
+}