1 /*---------------------------------------------------------------------------*\
3 \\ / F ield | OpenFOAM: The Open Source CFD Toolbox
5 \\ / A nd | Copyright (C) 1991-2008 OpenCFD Ltd.
7 -------------------------------------------------------------------------------
9 This file is part of OpenFOAM.
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.
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
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
29 Set up trapping for floating point exceptions (signal FPE).
31 Controlled by two env vars:
35 initialization of all malloced memory to NaN. If FOAM_SIGFPE
36 also set, this will cause usage of uninitialized scalars to trigger
39 This is the platform specific opaque implementation for class sigFpe.
44 \*---------------------------------------------------------------------------*/
49 #include "OSspecific.H"
52 #if defined(linux) || defined(linuxAMD64) || defined(linuxIA64)
56 #if defined(LINUX) && defined(__GNUC__)
60 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
65 /*---------------------------------------------------------------------------*\
66 Class sigFpeImpl Declaration
67 \*---------------------------------------------------------------------------*/
73 //- Saved old signal trapping setting
74 static struct sigaction oldAction_;
79 static void *(*old_malloc_hook)(size_t, const void *);
81 //- nan malloc function. From malloc_hook manpage.
82 static void* my_malloc_hook(size_t size, const void *caller);
87 // Static data members
91 //- Handler for caught signals
92 static void sigFpeHandler(int);
116 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
118 } // End namespace Foam
120 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
124 // ************************************************************************* //