src/OpenFOAM/db/dlLibraryTable/dlLibraryTable.C

   1 /*---------------------------------------------------------------------------*\
   2   =========                 |
   3   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   4    \\    /   O peration     |
   5     \\  /    A nd           | Copyright (C) 1991-2009 OpenCFD Ltd.
   6      \\/     M anipulation  |
   7 -------------------------------------------------------------------------------
   8 License
   9     This file is part of OpenFOAM.
  10
  11     OpenFOAM is free software; you can redistribute it and/or modify it
  12     under the terms of the GNU General Public License as published by the
  13     Free Software Foundation; either version 2 of the License, or (at your
  14     option) any later version.
  15
  16     OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
  17     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  18     FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  19     for more details.
  20
  21     You should have received a copy of the GNU General Public License
  22     along with OpenFOAM; if not, write to the Free Software Foundation,
  23     Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  24
  25 \*---------------------------------------------------------------------------*/
  26
  27 #include "dlLibraryTable.H"
  28
  29 #include <dlfcn.h>
  30
  31 // * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
  32
  33 Foam::dlLibraryTable Foam::dlLibraryTable::loadedLibraries;
  34
  35
  36 // * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
  37
  38 Foam::dlLibraryTable::dlLibraryTable()
  39 :
  40     HashTable<fileName, void*, Hash<void*> >()
  41 {}
  42
  43
  44 Foam::dlLibraryTable::readDlLibrary::readDlLibrary
  45 (
  46     const dictionary& dict,
  47     const word& libsEntry
  48 )
  49 {
  50     open(dict, libsEntry);
  51 }
  52
  53
  54 // * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
  55
  56 Foam::dlLibraryTable::~dlLibraryTable()
  57 {
  58     forAllIter(dlLibraryTable, *this, iter)
  59     {
  60         dlclose(iter.key());
  61     }
  62 }
  63
  64
  65 // * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
  66
  67 bool Foam::dlLibraryTable::open(const fileName& functionLibName)
  68 {
  69     if (functionLibName.size())
  70     {
  71         void* functionLibPtr =
  72             dlopen(functionLibName.c_str(), RTLD_LAZY|RTLD_GLOBAL);
  73
  74         if (!functionLibPtr)
  75         {
  76             WarningIn
  77             (
  78                 "dlLibraryTable::open(const fileName& functionLibName)"
  79             )   << "could not load " << dlerror()
  80                 << endl;
  81
  82             return false;
  83         }
  84         else
  85         {
  86             if (!loadedLibraries.found(functionLibPtr))
  87             {
  88                 loadedLibraries.insert(functionLibPtr, functionLibName);
  89                 return true;
  90             }
  91             else
  92             {
  93                 return false;
  94             }
  95         }
  96     }
  97     else
  98     {
  99         return false;
 100     }
 101 }
 102
 103
 104 bool Foam::dlLibraryTable::open
 105 (
 106     const dictionary& dict,
 107     const word& libsEntry
 108 )
 109 {
 110     if (dict.found(libsEntry))
 111     {
 112         fileNameList libNames(dict.lookup(libsEntry));
 113
 114         bool allOpened = (libNames.size() > 0);
 115
 116         forAll(libNames, i)
 117         {
 118             allOpened = dlLibraryTable::open(libNames[i]) && allOpened;
 119         }
 120
 121         return allOpened;
 122     }
 123     else
 124     {
 125         return false;
 126     }
 127 }
 128
 129
 130 // ************************************************************************* //