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, 212 insertions, 0 deletions

diff --git a/gnu/java/lang/management/MemoryPoolMXBeanImpl.java b/gnu/java/lang/management/MemoryPoolMXBeanImpl.java
new file mode 100644
index 000000000..af718e3ff
--- /dev/null
+++ b/gnu/java/lang/management/MemoryPoolMXBeanImpl.java
@@ -0,0 +1,212 @@
+/* MemoryPoolMXBeanImpl.java - Implementation of a memory pool bean
+   Copyright (C) 2006 Free Software Foundation
+
+This file is part of GNU Classpath.
+
+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.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+package gnu.java.lang.management;
+
+import gnu.classpath.SystemProperties;
+
+import java.lang.management.MemoryPoolMXBean;
+import java.lang.management.MemoryUsage;
+
+/**
+ * Provides access to information about one of the memory 
+ * resources or pools used by the current invocation of the
+ * virtual machine.  An instance of this bean for each memory
+ * pool is obtained by calling
+ * {@link ManagementFactory#getMemoryPoolMXBeans()}.
+ *
+ * @author Andrew John Hughes (gnu_andrew@member.fsf.org)
+ * @since 1.5
+ */
+public final class MemoryPoolMXBeanImpl
+  extends BeanImpl
+  implements MemoryPoolMXBean
+{
+
+  /**
+   * The name of the pool.
+   */
+  private String name;
+
+  /**
+   * Constant for collection usage threshold.
+   */
+  private static final String COLLECTION_USAGE_THRESHOLD = 
+    "gnu.java.lang.management.CollectionUsageThresholdSupport";
+
+  /**
+   * Constant for thread time support.
+   */
+  private static final String USAGE_THRESHOLD = 
+    "gnu.java.lang.management.UsageThresholdSupport";
+
+  /**
+   * Constructs a new <code>MemoryPoolMXBeanImpl</code>.
+   *
+   * @param name the name of the pool this bean represents.
+   */
+  public MemoryPoolMXBeanImpl(String name)
+  {
+    this.name = name;
+  }
+
+  public MemoryUsage getCollectionUsage()
+  {
+    return VMMemoryPoolMXBeanImpl.getCollectionUsage(name);
+  }
+
+  public long getCollectionUsageThreshold()
+  {
+    if (isCollectionUsageThresholdSupported())
+      return VMMemoryPoolMXBeanImpl.getCollectionUsageThreshold(name);
+    else
+      throw new UnsupportedOperationException("A collection usage "+
+					      "threshold is not supported.");
+  }
+
+  public long getCollectionUsageThresholdCount()
+  {
+    if (isCollectionUsageThresholdSupported())
+      return VMMemoryPoolMXBeanImpl.getCollectionUsageThresholdCount(name);
+    else
+      throw new UnsupportedOperationException("A collection usage "+
+					      "threshold is not supported.");
+  }
+
+  public String[] getMemoryManagerNames()
+  {
+    return VMMemoryPoolMXBeanImpl.getMemoryManagerNames(name);
+  }
+
+  public String getName()
+  {
+    return name;
+  }
+
+  public MemoryUsage getPeakUsage()
+  {
+    if (isValid())
+      return VMMemoryPoolMXBeanImpl.getPeakUsage(name);
+    else
+      return null;
+  }
+
+  public MemoryUsage getUsage()
+  {
+    if (isValid())
+      return VMMemoryPoolMXBeanImpl.getUsage(name);
+    else
+      return null;
+  }
+
+  public long getUsageThreshold()
+  {
+    if (isUsageThresholdSupported())
+      return VMMemoryPoolMXBeanImpl.getUsageThreshold(name);
+    else
+      throw new UnsupportedOperationException("A usage threshold " +
+					      "is not supported.");
+  }
+
+  public long getUsageThresholdCount()
+  {
+    if (isUsageThresholdSupported())
+      return VMMemoryPoolMXBeanImpl.getUsageThresholdCount(name);
+    else
+      throw new UnsupportedOperationException("A usage threshold " +
+					      "is not supported.");
+  }
+
+  public boolean isCollectionUsageThresholdExceeded()
+  {
+    return getCollectionUsage().getUsed() >= getCollectionUsageThreshold();
+  }
+
+  public boolean isCollectionUsageThresholdSupported()
+  {
+    return SystemProperties.getProperty(COLLECTION_USAGE_THRESHOLD) != null;
+  }
+
+  public boolean isUsageThresholdExceeded()
+  {
+    return getUsage().getUsed() >= getUsageThreshold();
+  }
+
+  public boolean isUsageThresholdSupported()
+  {
+    return SystemProperties.getProperty(USAGE_THRESHOLD) != null;
+  }
+
+  public boolean isValid()
+  {
+    return VMMemoryPoolMXBeanImpl.isValid(name);
+  }
+
+  public void resetPeakUsage()
+  {
+    checkControlPermissions();
+    VMMemoryPoolMXBeanImpl.resetPeakUsage(name);
+  }
+
+  public void setCollectionUsageThreshold(long threshold)
+  {
+    checkControlPermissions();
+    if (threshold < 0)
+      throw new IllegalArgumentException("Threshold of " + threshold +
+					 "is less than zero.");
+    if (isCollectionUsageThresholdSupported())
+      VMMemoryPoolMXBeanImpl.setCollectionUsageThreshold(name, threshold);
+    else
+      throw new UnsupportedOperationException("A collection usage "+
+					      "threshold is not supported.");
+  }
+
+  public void setUsageThreshold(long threshold)
+  {
+    checkControlPermissions();
+    if (threshold < 0)
+      throw new IllegalArgumentException("Threshold of " + threshold +
+					 "is less than zero.");
+    if (isUsageThresholdSupported())
+      VMMemoryPoolMXBeanImpl.setUsageThreshold(name, threshold);
+    else
+      throw new UnsupportedOperationException("A usage threshold " +
+					      "is not supported.");
+  }
+
+}
+