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sigIntImpl.C

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00001 /*---------------------------------------------------------------------------*\
00002   =========                 |
00003   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
00004    \\    /   O peration     |
00005     \\  /    A nd           | Copyright (C) 1991-2010 OpenCFD Ltd.
00006      \\/     M anipulation  |
00007 -------------------------------------------------------------------------------
00008 License
00009     This file is part of OpenFOAM.
00010 
00011     OpenFOAM is free software: you can redistribute it and/or modify it
00012     under the terms of the GNU General Public License as published by
00013     the Free Software Foundation, either version 3 of the License, or
00014     (at your option) any later version.
00015 
00016     OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
00017     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
00018     FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
00019     for more details.
00020 
00021     You should have received a copy of the GNU General Public License
00022     along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
00023 
00024 \*---------------------------------------------------------------------------*/
00025 
00026 #include <OpenFOAM/error.H>
00027 #include "sigIntImpl.H"
00028 #include <OpenFOAM/JobInfo.H>
00029 #include <OpenFOAM/IOstreams.H>
00030 
00031 // * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
00032 
00033 struct sigaction Foam::sigIntImpl::oldAction_;
00034 
00035 // * * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * //
00036 
00037 void Foam::sigIntImpl::sigIntHandler(int)
00038 {
00039     // Reset old handling
00040     if (sigaction(SIGINT, &oldAction_, NULL) < 0)
00041     {
00042         FatalErrorIn
00043         (
00044             "Foam::sigIntImpl::sigIntHandler()"
00045         )   << "Cannot reset SIGINT trapping"
00046             << abort(FatalError);    
00047     }
00048 
00049     // Update jobInfo file
00050     jobInfo.signalEnd();
00051 
00052     // Throw signal (to old handler)
00053     raise(SIGINT);
00054 }
00055 
00056 
00057 // * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
00058 
00059 Foam::sigIntImpl::sigIntImpl()
00060 {
00061     oldAction_.sa_handler = NULL;
00062 }
00063 
00064 
00065 // * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
00066 
00067 Foam::sigIntImpl::~sigIntImpl()
00068 {
00069     // Reset old handling
00070     if (sigaction(SIGINT, &oldAction_, NULL) < 0)
00071     {
00072         FatalErrorIn
00073         (
00074             "Foam::sigIntImpl::~sigIntImpl()"
00075         )   << "Cannot reset SIGINT trapping"
00076             << abort(FatalError);    
00077     }
00078 }
00079 
00080 
00081 // * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
00082 
00083 void Foam::sigIntImpl::set(const bool verbose)
00084 {
00085     if (oldAction_.sa_handler)
00086     {
00087         FatalErrorIn
00088         (
00089             "Foam::sigIntImpl::set()"
00090         )   << "Cannot call sigIntImpl::set() more than once"
00091             << abort(FatalError);
00092     }
00093 
00094     struct sigaction newAction;
00095     newAction.sa_handler = sigIntHandler;
00096     newAction.sa_flags = SA_NODEFER;
00097     sigemptyset(&newAction.sa_mask);
00098     if (sigaction(SIGINT, &newAction, &oldAction_) < 0)
00099     {
00100         FatalErrorIn
00101         (
00102             "Foam::sigIntImpl::set()"
00103         )   << "Cannot set SIGINT trapping"
00104             << abort(FatalError);    
00105     }
00106 }
00107 
00108 
00109 // ************************ vim: set sw=4 sts=4 et: ************************ //
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