bes  Updated for version 3.20.6
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 
44 class BESMemoryGlobalArea: public BESObj {
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 
57 public:
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 
BESMemoryGlobalArea
Definition: BESMemoryGlobalArea.h:44
BESObj
top level BES object to house generic methods
Definition: BESObj.h:49
BESMemoryGlobalArea::dump
virtual void dump(std::ostream &strm) const
dumps information about this object
Definition: BESMemoryGlobalArea.cc:205