libperfstat_aix.hpp revision 5969:666e6ce3976c 
1/*
2 * Copyright 2012, 2013 SAP AG. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
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23 */
24
25// encapsulates the libperfstat library.
26//
27// The purpose of this code is to dynamically load the libperfstat library
28// instead of statically linking against it. The libperfstat library is an
29// AIX-specific library which only exists on AIX, not on PASE. If I want to
30// share binaries between AIX and PASE, I cannot directly link against libperfstat.so.
31
32#ifndef OS_AIX_VM_LIBPERFSTAT_AIX_HPP
33#define OS_AIX_VM_LIBPERFSTAT_AIX_HPP
34
35#include <libperfstat.h>
36
37class libperfstat {
38
39public:
40
41  // Load the libperfstat library (must be in LIBPATH).
42  // Returns true if succeeded, false if error.
43  static bool init();
44
45  // cleanup of the libo4 porting library.
46  static void cleanup();
47
48  // direct wrappers for the libperfstat functionality. All they do is
49  // to call the functions with the same name via function pointers.
50  static int perfstat_cpu_total(perfstat_id_t *name, perfstat_cpu_total_t* userbuff,
51                                int sizeof_userbuff, int desired_number);
52
53  static int perfstat_memory_total(perfstat_id_t *name, perfstat_memory_total_t* userbuff,
54                                   int sizeof_userbuff, int desired_number);
55
56  static void perfstat_reset();
57};
58
59#endif // OS_AIX_VM_LIBPERFSTAT_AIX_HPP
60