| /* VMMemoryManagerMXBeanImpl.java - VM interface for a memory manager 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 java.lang.management.ManagementFactory; |
| import java.lang.management.MemoryPoolMXBean; |
| |
| import java.util.ArrayList; |
| import java.util.Iterator; |
| import java.util.List; |
| |
| /** |
| * Provides access to information about the memory managers |
| * of the virtual machine. An instance of this bean for each |
| * memory manager is obtained by calling |
| * {@link ManagementFactory#getMemoryManagerMXBeans()}. |
| * |
| * @author Andrew John Hughes (gnu_andrew@member.fsf.org) |
| * @since 1.5 |
| */ |
| final class VMMemoryManagerMXBeanImpl |
| { |
| |
| /** |
| * Returns an array containing the names of the memory pools |
| * this memory manager manages. |
| * |
| * @param name the name of the memory manager. |
| * @return an array containing the name of each memory pool |
| * this manager is responsible for. |
| */ |
| static String[] getMemoryPoolNames(String name) |
| { |
| List managedPools = new ArrayList(); |
| Iterator beans = ManagementFactory.getMemoryPoolMXBeans().iterator(); |
| while (beans.hasNext()) |
| { |
| MemoryPoolMXBean bean = (MemoryPoolMXBean) beans.next(); |
| String[] managers = bean.getMemoryManagerNames(); |
| for (int a = 0; a < managers.length; ++a) |
| if (managers[a].equals(name)) |
| { |
| managedPools.add(bean.getName()); |
| break; |
| } |
| } |
| return (String[]) managedPools.toArray(new String[managedPools.size()]); |
| } |
| |
| /** |
| * Returns true if this memory manager is still valid. A memory |
| * manager becomes invalid when it is removed by the virtual machine |
| * and no longer used. |
| * |
| * @param name the name of the memory manager. |
| * @return true if this memory manager is valid. |
| */ |
| static boolean isValid(String name) |
| { |
| return false; |
| } |
| |
| } |