OPeNDAP Hyrax Back End Server (BES)  Updated for version 3.8.3
BESMemoryGlobalArea.h
Go to the documentation of this file.
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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 <sys/resource.h>
37 
38 #include "BESObj.h"
39 
40 #define MEGABYTE 1024*1024
41 
43 {
44  struct rlimit limit ;
45  static unsigned long _size ;
46  static int _counter ;
47  static void *_buffer ;
48 
49  unsigned long megabytes( unsigned int s )
50  {
51  return s*MEGABYTE ;
52  }
53  void log_limits( const string &msg ) ;
54 
55 public:
58 
59  void release_memory() ;
60  bool reclaim_memory() ;
61  unsigned long SizeOfEmergencyPool() { return _size; }
62 
63  virtual void dump( ostream &strm ) const ;
64 };
65 
66 #endif // BESMemoryGlobalArea_h_
67 
unsigned long SizeOfEmergencyPool()
Base object for bes objects.
Definition: BESObj.h:52
virtual void dump(ostream &strm) const
dumps information about this object
#define MEGABYTE