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Java > Open Source Codes > com > caucho > util > CauchoNative


1 /*
2  * Copyright (c) 1998-2006 Caucho Technology -- all rights reserved
3  *
4  * This file is part of Resin(R) Open Source
5  *
6  * Each copy or derived work must preserve the copyright notice and this
7  * notice unmodified.
8  *
9  * Resin Open Source is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation; either version 2 of the License, or
12  * (at your option) any later version.
13  *
14  * Resin Open Source is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
17  * of NON-INFRINGEMENT. See the GNU General Public License for more
18  * details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with Resin Open Source; if not, write to the
22  * Free SoftwareFoundation, Inc.
23  * 59 Temple Place, Suite 330
24  * Boston, MA 02111-1307 USA
25  *
26  * @author Scott Ferguson
27  */
28
29 package com.caucho.util;
30
31 /**
32  * A wrapper for Caucho system variables, allowing tests to override
33  * the default variables.
34  */
35 class CauchoNative {
36   static CauchoNative jni;
37   static boolean isInit;
38
39   private CauchoNative()
40   {
41   }
42
43   static CauchoNative create()
44   {
45     if (jni != null)
46       return jni;
47
48     if (! isInit) {
49       isInit = true;
50       //System.loadLibrary("caucho");
51 //jni = new CauchoNative();
52 }
53
54     return jni;
55   }
56
57   native void calculateUsage();
58
59   native int getPid();
60
61   native double getUserTime();
62   native double getSystemTime();
63   native int getMaxResidentSetSize();
64   native int getResidentSetSize();
65   native int getSwaps();
66   native int getContextSwitches();
67
68   native boolean setUser(String JavaDoc user, String JavaDoc group);
69 }
70
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