1 /*---------------------------------------------------------------------------*\
3 \\ / F ield | OpenFOAM: The Open Source CFD Toolbox
5 \\ / A nd | Copyright (C) 1991-2009 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
42 \*---------------------------------------------------------------------------*/
47 #include "OSspecific.H"
50 #if defined(linux) || defined(linuxAMD64) || defined(linuxIA64)
54 #if defined(LINUX) && defined(__GNUC__)
58 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
63 /*---------------------------------------------------------------------------*\
64 Class sigFpe Declaration
65 \*---------------------------------------------------------------------------*/
71 //- Saved old signal trapping setting
72 static struct sigaction oldAction_;
77 static void *(*old_malloc_hook)(size_t, const void *);
79 //- nan malloc function. From malloc_hook manpage.
80 static void* my_malloc_hook(size_t size, const void *caller);
85 // Static data members
89 //- Handler for caught signals
90 static void sigFpeHandler(int);
110 void set(const bool verbose);
114 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
116 } // End namespace Foam
118 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
122 // ************************************************************************* //