bes Updated for version 3.20.13
BESMemoryGlobalArea.h
1// BESMemoryGlobalArea.h
2
3// This file is part of bes, A C++ back-end server implementation framework
4// for the OPeNDAP Data Access Protocol.
5
6// Copyright (c) 2004-2009 University Corporation for Atmospheric Research
7// Author: Patrick West <pwest@ucar.edu> and Jose Garcia <jgarcia@ucar.edu>
8//
9// This library is free software; you can redistribute it and/or
10// modify it under the terms of the GNU Lesser General Public
11// License as published by the Free Software Foundation; either
12// version 2.1 of the License, or (at your option) any later version.
13//
14// This library 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. See the GNU
17// Lesser General Public License for more details.
18//
19// You should have received a copy of the GNU Lesser General Public
20// License along with this library; if not, write to the Free Software
21// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22//
23// You can contact University Corporation for Atmospheric Research at
24// 3080 Center Green Drive, Boulder, CO 80301
25
26// (c) COPYRIGHT University Corporation for Atmospheric Research 2004-2005
27// Please read the full copyright statement in the file COPYRIGHT_UCAR.
28//
29// Authors:
30// pwest Patrick West <pwest@ucar.edu>
31// jgarcia Jose Garcia <jgarcia@ucar.edu>
32
33#ifndef BESMemoryGlobalArea_h_
34#define BESMemoryGlobalArea_h_ 1
35
36#include <string>
37
38#include "BESObj.h"
39
40#include <sys/resource.h>
41
42#define MEGABYTE 1024*1024
43
45 struct rlimit limit;
46 static unsigned long _size;
47 static int _counter;
48 static void *_buffer;
49
50 unsigned long megabytes(unsigned int s)
51 {
52 return s * MEGABYTE;
53 }
54
55 void log_limits(const std::string &msg);
56
57public:
60
61 void release_memory();
62 bool reclaim_memory();
63 unsigned long SizeOfEmergencyPool() const
64 {
65 return _size;
66 }
67
68 virtual void dump(std::ostream &strm) const;
69};
70
71#endif // BESMemoryGlobalArea_h_
72
virtual void dump(std::ostream &strm) const
dumps information about this object
top level BES object to house generic methods
Definition: BESObj.h:54