sigSegv.C
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25 
26 #include "sigSegv.H"
27 #include "error.H"
28 #include "JobInfo.H"
29 #include "IOstreams.H"
30 
31 // * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
32 
33 struct sigaction Foam::sigSegv::oldAction_;
34 
35 
36 // * * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * //
37 
38 void Foam::sigSegv::sigHandler(int)
39 {
40  // Reset old handling
41  if (sigaction(SIGSEGV, &oldAction_, nullptr) < 0)
42  {
44  << "Cannot reset SIGSEGV trapping"
45  << abort(FatalError);
46  }
47 
48  // Update jobInfo file
50 
51  error::printStack(Perr);
52 
53  // Throw signal (to old handler)
54  raise(SIGSEGV);
55 }
56 
57 
58 // * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
59 
61 {
62  oldAction_.sa_handler = nullptr;
63 }
64 
65 
66 // * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
67 
69 {
70  // Reset old handling
71  if (sigaction(SIGSEGV, &oldAction_, nullptr) < 0)
72  {
74  << "Cannot reset SIGSEGV trapping"
75  << abort(FatalError);
76  }
77 }
78 
79 
80 // * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
81 
82 void Foam::sigSegv::set(const bool)
83 {
84  if (oldAction_.sa_handler)
85  {
87  << "Cannot call sigSegv::set() more than once"
88  << abort(FatalError);
89  }
90 
91  struct sigaction newAction;
92  newAction.sa_handler = sigHandler;
93  newAction.sa_flags = SA_NODEFER;
94  sigemptyset(&newAction.sa_mask);
95  if (sigaction(SIGSEGV, &newAction, &oldAction_) < 0)
96  {
98  << "Cannot set SIGSEGV trapping"
99  << abort(FatalError);
100  }
101 }
102 
103 
104 // ************************************************************************* //
void signalEnd() const
Definition: JobInfo.C:175
error FatalError
#define FatalErrorInFunction
Report an error message using Foam::FatalError.
Definition: error.H:319
sigSegv()
Construct null.
Definition: sigSegv.C:60
Useful combination of include files which define Sin, Sout and Serr and the use of IO streams general...
~sigSegv()
Destructor.
Definition: sigSegv.C:68
errorManip< error > abort(error &err)
Definition: errorManip.H:131
prefixOSstream Perr(cerr, "Perr")
Definition: IOstreams.H:54
JobInfo jobInfo
Definition: JobInfo.C:35
void set(const bool verbose)
Activate SIGSEGV signal handler.
Definition: sigSegv.C:82
Namespace for OpenFOAM.