sigInt.C
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1 /*---------------------------------------------------------------------------*\
2  ========= |
3  \\ / F ield | OpenFOAM: The Open Source CFD Toolbox
4  \\ / O peration |
5  \\ / A nd | Copyright (C) 2011 OpenFOAM Foundation
6  \\/ M anipulation |
7 -------------------------------------------------------------------------------
8 License
9  This file is part of OpenFOAM.
10 
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18  FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
19  for more details.
20 
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22  along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
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24 \*---------------------------------------------------------------------------*/
25 
26 #include "sigInt.H"
27 #include "error.H"
28 #include "JobInfo.H"
29 #include "IOstreams.H"
30 
31 // * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
32 
33 struct sigaction Foam::sigInt::oldAction_;
34 
35 
36 // * * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * //
37 
38 void Foam::sigInt::sigHandler(int)
39 {
40  // Reset old handling
41  if (sigaction(SIGINT, &oldAction_, NULL) < 0)
42  {
44  (
45  "Foam::sigInt::sigHandler()"
46  ) << "Cannot reset SIGINT trapping"
47  << abort(FatalError);
48  }
49 
50  // Update jobInfo file
52 
53  // Throw signal (to old handler)
54  raise(SIGINT);
55 }
56 
57 
58 // * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
59 
61 {
62  oldAction_.sa_handler = NULL;
63 }
64 
65 
66 // * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
67 
69 {
70  // Reset old handling
71  if (sigaction(SIGINT, &oldAction_, NULL) < 0)
72  {
74  (
75  "Foam::sigInt::~sigInt()"
76  ) << "Cannot reset SIGINT trapping"
77  << abort(FatalError);
78  }
79 }
80 
81 
82 // * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
83 
84 void Foam::sigInt::set(const bool)
85 {
86  if (oldAction_.sa_handler)
87  {
89  (
90  "Foam::sigInt::set()"
91  ) << "Cannot call sigInt::set() more than once"
92  << abort(FatalError);
93  }
94 
95  struct sigaction newAction;
96  newAction.sa_handler = sigHandler;
97  newAction.sa_flags = SA_NODEFER;
98  sigemptyset(&newAction.sa_mask);
99  if (sigaction(SIGINT, &newAction, &oldAction_) < 0)
100  {
102  (
103  "Foam::sigInt::set()"
104  ) << "Cannot set SIGINT trapping"
105  << abort(FatalError);
106  }
107 }
108 
109 
110 // ************************************************************************* //
void signalEnd() const
Definition: JobInfo.C:176
Namespace for OpenFOAM.
Useful combination of include files which define Sin, Sout and Serr and the use of IO streams general...
~sigInt()
Destructor.
Definition: sigInt.C:68
void set(const bool verbose)
Activate SIGINT signal handler.
Definition: sigInt.C:84
sigInt()
Construct null.
Definition: sigInt.C:60
errorManip< error > abort(error &err)
Definition: errorManip.H:131
#define FatalErrorIn(functionName)
Report an error message using Foam::FatalError.
Definition: error.H:314
JobInfo jobInfo
Definition: JobInfo.C:35
error FatalError