SystemInfoImplMBean


1   /*
2    * Copyright 2004 Outerthought bvba and Schaubroeck nv
3    *
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    *     http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  package org.outerj.daisy.repository.serverimpl;
17  
18  import java.util.Date  ;
19  
20  /**
21   * MBean for providing some general system information.
22   */
23  public interface SystemInfoImplMBean {
24      /**
25       * Shows the current amount of free memory in the VM, measured in bytes.
26       */
27      long getFreeVmMemory();
28  
29      String   getVmMemoryFormatted();
30  
31      /**
32       * Shows the maximum amount of memory that the VM will attempt to use, measured in bytes.
33       */
34      long getMaxVmMemory();
35  
36      /**
37       * Shows the total amount of free memory in the VM, measured in bytes.
38       */
39      long getTotalVmMemory();
40  
41      /**
42       * Shows the number of available processors for the VM
43       */
44      int getAvailableProcessors();
45  
46      /**
47       * Shows the (approx.) time when the system was started.
48       */
49      Date   getStartTime();
50  
51      /**
52       * Shows the (approx.) current system uptime
53       */
54      String   getUpTime();
55  
56      /**
57       * Suggests the VM to run the Garbage Collector
58       */
59      void triggerGarbageCollector();
60  
61      /**
62       * Shows file encoding.
63       */
64      String   getFileEncoding();
65      
66      /**
67       * 
68       */
69      String   getServerVersion();
70  }
71
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