01: /*
02: * Copyright 2003-2005 Sun Microsystems, Inc. All Rights Reserved.
03: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
04: *
05: * This code is free software; you can redistribute it and/or modify it
06: * under the terms of the GNU General Public License version 2 only, as
07: * published by the Free Software Foundation. Sun designates this
08: * particular file as subject to the "Classpath" exception as provided
09: * by Sun in the LICENSE file that accompanied this code.
10: *
11: * This code is distributed in the hope that it will be useful, but WITHOUT
12: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13: * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14: * version 2 for more details (a copy is included in the LICENSE file that
15: * accompanied this code).
16: *
17: * You should have received a copy of the GNU General Public License version
18: * 2 along with this work; if not, write to the Free Software Foundation,
19: * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20: *
21: * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22: * CA 95054 USA or visit www.sun.com if you need additional information or
23: * have any questions.
24: */
25:
26: package sun.management;
27:
28: import sun.management.counter.Counter;
29:
30: /**
31: * Hotspot internal management interface for the runtime system.
32: *
33: * This management interface is internal and uncommitted
34: * and subject to change without notice.
35: */
36: public interface HotspotRuntimeMBean {
37:
38: /**
39: * Returns the number of safepoints taken place since the Java
40: * virtual machine started.
41: *
42: * @return the number of safepoints taken place since the Java
43: * virtual machine started.
44: */
45: public long getSafepointCount();
46:
47: /**
48: * Returns the accumulated time spent at safepoints in milliseconds.
49: * This is the accumulated elapsed time that the application has
50: * been stopped for safepoint operations.
51: *
52: * @return the accumulated time spent at safepoints in milliseconds.
53: */
54: public long getTotalSafepointTime();
55:
56: /**
57: * Returns the accumulated time spent getting to safepoints in milliseconds.
58: *
59: * @return the accumulated time spent getting to safepoints in milliseconds.
60: */
61: public long getSafepointSyncTime();
62:
63: /**
64: * Returns a list of internal counters maintained in the Java
65: * virtual machine for the runtime system.
66: *
67: * @return a <tt>List</tt> of internal counters maintained in the VM
68: * for the runtime system.
69: */
70: public java.util.List<Counter> getInternalRuntimeCounters();
71: }
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