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src
OSspecific
POSIX
signals
sigFpeImpl.H
Go to the documentation of this file.
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/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration |
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\\ / A nd | Copyright (C) 1991-2010 OpenCFD Ltd.
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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License
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This file is part of OpenFOAM.
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OpenFOAM is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
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Class
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Foam::sigFpeImpl
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Description
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Set up trapping for floating point exceptions (signal FPE).
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Controlled by two env vars:
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@param FOAM_SIGFPE \n
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exception trapping
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@param FOAM_SETNAN \n
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initialization of all malloced memory to NaN. If FOAM_SIGFPE
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also set, this will cause usage of uninitialized scalars to trigger
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an abort.
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This is the platform specific opaque implementation for class sigFpe.
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SourceFiles
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sigFpeImpl.C
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\*---------------------------------------------------------------------------*/
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#ifndef sigFpeImpl_H
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#define sigFpeImpl_H
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#include <
OpenFOAM/OSspecific.H
>
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#include "FOAMConfig.h"
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#include <signal.h>
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#if (defined(FOAM_HAVE_FENV_H) && defined(FOAM_HAVE_FEENABLEEXCEPT)) || \
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(defined(FOAM_HAVE_SIGFPE_H) && defined(FOAM_HAVE_HANDLE_SIGFPES))
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# define FOAM_USE_FPE_HANDLING
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#endif
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#if defined(FOAM_HAVE_MALLOC_HOOK) && defined(FOAM_USE_FPE_HANDLING)
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# define FOAM_USE_MALLOC_HOOK
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#endif
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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namespace
Foam
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{
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/*---------------------------------------------------------------------------*\
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Class sigFpeImpl Declaration
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\*---------------------------------------------------------------------------*/
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class
sigFpeImpl
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{
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// Private data
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//- Saved old signal trapping setting
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static
struct
sigaction oldAction_;
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# ifdef FOAM_USE_MALLOC_HOOK
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//- Saved old malloc
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static
void
*(*old_malloc_hook)(size_t,
const
void
*);
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//- nan malloc function. From malloc_hook manpage.
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static
void
* my_malloc_hook(
size_t
size,
const
void
*caller);
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# endif
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// Static data members
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# ifdef FOAM_USE_FPE_HANDLING
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//- Handler for caught signals
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static
void
sigFpeHandler(
int
);
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# endif
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public
:
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// Constructors
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sigFpeImpl
();
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// Destructor
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~sigFpeImpl
();
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// Member functions
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void
set
(
const
bool
verbose);
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};
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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}
// End namespace Foam
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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#endif
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// ************************ vim: set sw=4 sts=4 et: ************************ //