mirror of
https://github.com/OpenFOAM/OpenFOAM-6.git
synced 2025-12-08 06:57:46 +00:00
125 lines
3.3 KiB
C++
125 lines
3.3 KiB
C++
/*---------------------------------------------------------------------------*\
|
|
========= |
|
|
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
|
|
\\ / O peration |
|
|
\\ / A nd | Copyright (C) 2011-2016 OpenFOAM Foundation
|
|
\\/ M anipulation |
|
|
-------------------------------------------------------------------------------
|
|
License
|
|
This file is part of OpenFOAM.
|
|
|
|
OpenFOAM is free software: you can redistribute it and/or modify it
|
|
under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
|
|
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
Class
|
|
Foam::sigFpe
|
|
|
|
Description
|
|
Set up trapping for floating point exceptions (signal FPE).
|
|
|
|
Controlled by two env vars:
|
|
- \par FOAM_SIGFPE
|
|
Exception trapping
|
|
- \par FOAM_SETNAN
|
|
Initialization of all malloced memory to NaN. If FOAM_SIGFPE
|
|
also set, this will cause usage of uninitialized scalars to trigger
|
|
an abort.
|
|
|
|
SourceFiles
|
|
sigFpe.C
|
|
|
|
\*---------------------------------------------------------------------------*/
|
|
|
|
#ifndef sigFpe_H
|
|
#define sigFpe_H
|
|
|
|
#include <signal.h>
|
|
|
|
#if defined(linux) || defined(linux64) || defined(linuxIA64) || \
|
|
defined(linuxARM7) || defined(linuxPPC64) || defined(linuxPPC64le)
|
|
#define LINUX
|
|
#endif
|
|
|
|
#if defined(LINUX) && defined(__GNUC__)
|
|
#define LINUX_GNUC
|
|
#endif
|
|
|
|
#include "UList.H"
|
|
|
|
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
|
|
|
|
namespace Foam
|
|
{
|
|
|
|
/*---------------------------------------------------------------------------*\
|
|
Class sigFpe Declaration
|
|
\*---------------------------------------------------------------------------*/
|
|
|
|
class sigFpe
|
|
{
|
|
// Private data
|
|
|
|
//- Saved old signal trapping setting
|
|
static struct sigaction oldAction_;
|
|
|
|
|
|
// Static data members
|
|
|
|
#ifdef LINUX_GNUC
|
|
//- Handler for caught signals
|
|
static void sigHandler(int);
|
|
#endif
|
|
|
|
|
|
public:
|
|
|
|
|
|
// Constructors
|
|
|
|
//- Construct null
|
|
sigFpe();
|
|
|
|
|
|
//- Destructor
|
|
~sigFpe();
|
|
|
|
|
|
// Member functions
|
|
|
|
//- Activate SIGFPE signal handler when FOAM_SIGFPE is %set
|
|
// Fill memory with NaN when FOAM_SETNAN is %set
|
|
void set(const bool verbose);
|
|
|
|
//- Flag to indicate mallocNan is enabled
|
|
static bool mallocNanActive_;
|
|
|
|
#ifdef LINUX
|
|
//- Malloc function which initializes to NaN
|
|
static void* mallocNan(size_t size);
|
|
#endif
|
|
|
|
//- Fill block of data with NaN
|
|
static void fillNan(UList<scalar>&);
|
|
};
|
|
|
|
|
|
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
|
|
|
|
} // End namespace Foam
|
|
|
|
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
|
|
|
|
#endif
|
|
|
|
// ************************************************************************* //
|