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 com.sun.management;
27:
28: import sun.management.VMManagement;
29:
30: /**
31: * Implementation class for the operating system.
32: * Standard and committed hotspot-specific metrics if any.
33: *
34: * ManagementFactory.getOperatingSystemMXBean() returns an instance
35: * of this class.
36: */
37: class OperatingSystem extends sun.management.OperatingSystemImpl
38: implements OperatingSystemMXBean {
39:
40: // psapiLock is a lock to make sure only one thread loading
41: // PSAPI DLL.
42: private static Object psapiLock = new Object();
43:
44: OperatingSystem(VMManagement vm) {
45: super (vm);
46: }
47:
48: public long getCommittedVirtualMemorySize() {
49: synchronized (psapiLock) {
50: return getCommittedVirtualMemorySize0();
51: }
52: }
53:
54: private native long getCommittedVirtualMemorySize0();
55:
56: public native long getTotalSwapSpaceSize();
57:
58: public native long getFreeSwapSpaceSize();
59:
60: public native long getProcessCpuTime();
61:
62: public native long getFreePhysicalMemorySize();
63:
64: public native long getTotalPhysicalMemorySize();
65:
66: static {
67: initialize();
68: }
69:
70: private static native void initialize();
71: }
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