KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > com > sun > enterprise > admin > monitor > stats > JVMThreadStats


1 /*
2  * The contents of this file are subject to the terms
3  * of the Common Development and Distribution License
4  * (the License). You may not use this file except in
5  * compliance with the License.
6  *
7  * You can obtain a copy of the license at
8  * https://glassfish.dev.java.net/public/CDDLv1.0.html or
9  * glassfish/bootstrap/legal/CDDLv1.0.txt.
10  * See the License for the specific language governing
11  * permissions and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL
14  * Header Notice in each file and include the License file
15  * at glassfish/bootstrap/legal/CDDLv1.0.txt.
16  * If applicable, add the following below the CDDL Header,
17  * with the fields enclosed by brackets [] replaced by
18  * you own identifying information:
19  * "Portions Copyrighted [year] [name of copyright owner]"
20  *
21  * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
22  */
23
24 /*
25  * Copyright 2004-2005 Sun Microsystems, Inc. All rights reserved.
26  * Use is subject to license terms.
27  */
28
29 package com.sun.enterprise.admin.monitor.stats;
30 import javax.management.j2ee.statistics.Stats JavaDoc;
31 import javax.management.j2ee.statistics.CountStatistic JavaDoc;
32 import com.sun.enterprise.admin.monitor.stats.StringStatistic;
33
34 /**
35  * A Stats interface, to expose the monitoring information
36  * about the thread system of the JVM.
37  * @since 8.1
38  */
39 public interface JVMThreadStats extends Stats JavaDoc {
40     
41     /**
42      * Returns the current number of live daemon and non-daemon
43      * threads
44      * @return CountStatistic current number of live threads
45      */
46     public CountStatistic JavaDoc getThreadCount();
47     
48     /**
49      * Returns the peak live thread count, since the JVM started or
50      * the peak was reset
51      * @return CountStatistic peak live thread count
52      */
53     public CountStatistic JavaDoc getPeakThreadCount();
54     
55     /**
56      * Returns the total number of threads created and also started
57      * since the JVM started
58      * @return CountStatistic total number of threads started
59      */
60     public CountStatistic JavaDoc getTotalStartedThreadCount();
61     
62     /**
63      * Returns the current number of live daemon threads
64      * @return CountStatistic current number of live daemon threads
65      */
66     public CountStatistic JavaDoc getDaemonThreadCount();
67     
68     /**
69      * Returns a comma separated list of all live thread ids
70      * @return StringStatistic live thread ids
71      */
72     public StringStatistic getAllThreadIds();
73     
74     /**
75      * Returns the CPU time for the current thread in nanoseconds, if
76      * CPU time measurement is enabled. Else returns -1
77      * @return CountStatistic CPU time for the current thread
78      */
79     public CountStatistic JavaDoc getCurrentThreadCPUTime();
80     
81     /**
82      * Returns a comma separated list of thread ids that are
83      * monitor deadlocked
84      * @return StringStatistic
85      */
86     public StringStatistic getMonitorDeadlockedThreads();
87     
88 }
89
Popular Tags