signalMacros.C
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25 
26 Description
27  File-local code for setting/resetting signal handlers.
28 
29 SourceFiles
30  signalMacros.C
31 
32 \*---------------------------------------------------------------------------*/
33 
34 #include "error.H"
35 #include <csignal>
36 
37 // * * * * * * * * * * * * * * * Local Functions * * * * * * * * * * * * * * //
38 
39 namespace Foam
40 {
41 
42 // Saved old signal trapping setting (file-local variable)
43 static __p_sig_fn_t oldAction_ = SIG_DFL;
44 
45 
46 static void resetHandler(const char *what, int sigNum)
47 {
48  const __p_sig_fn_t prev = ::signal(sigNum, oldAction_);
49  oldAction_ = SIG_DFL;
50 
51  if (SIG_ERR == prev)
52  {
53  FatalError
54  << "Cannot unset " << what << " signal (" << sigNum
55  << ") trapping" << endl
56  << abort(FatalError);
57  }
58 }
59 
60 
61 static void setHandler(const char *what, int sigNum, void (*handler)(int))
62 {
63  oldAction_ = ::signal(sigNum, handler);
64 
65  if (SIG_ERR == oldAction_)
66  {
67  FatalError
68  << "Could not set " << what << " signal (" << sigNum
69  << ") trapping" << endl
70  << abort(FatalError);
71  }
72 }
73 
74 } // End namespace Foam
75 
76 
77 // ************************************************************************* //
Foam::resetHandler
static void resetHandler(const char *what, int sigNum)
Definition: signalMacros.C:46
Foam::oldAction_
static __p_sig_fn_t oldAction_
Definition: signalMacros.C:43
Foam::endl
Ostream & endl(Ostream &os)
Add newline and flush stream.
Definition: Ostream.H:369
error.H
Foam::FatalError
error FatalError
Foam
Namespace for OpenFOAM.
Definition: atmBoundaryLayer.C:33
Foam::abort
errorManip< error > abort(error &err)
Definition: errorManip.H:144
Foam::setHandler
static void setHandler(const char *what, int sigNum, void(*handler)(int))
Definition: signalMacros.C:61