sigWriteNow.H

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License
    This file is part of OpenFOAM.
 
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    the Free Software Foundation, either version 3 of the License, or
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Class
    Foam::sigWriteNow
 
Description
    Signal handler to write once and continue.
    The interrupt is defined by OptimisationSwitches::writeNowSignal
 
SourceFiles
    sigWriteNow.cxx
 
\*---------------------------------------------------------------------------*/
 
#ifndef Foam_sigWriteNow_H
#define Foam_sigWriteNow_H
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
// Forward Declarations
class Time;
 
/*---------------------------------------------------------------------------*\
                         Class sigWriteNow Declaration
\*---------------------------------------------------------------------------*/
 
class sigWriteNow
{
    // Private Data
 
        //- Signal number to use
        static int signal_;
 
 
    // Private Member Functions
 
        //- Handler for caught signals
        static void sigHandler(int);
 
 
public:
 
    //- Allow setter access to signal_
    friend class addwriteNowSignalToOpt;
 
 
    // Constructors
 
        //- Default construct
        sigWriteNow() noexcept = default;
 
        //- Construct with Time reference
        explicit sigWriteNow(Time& runTime, bool verbose=false);
 
 
    //- Destructor
    ~sigWriteNow();
 
 
    // Member Functions
 
        //- Is active?
        static bool active() noexcept { return (signal_ > 0); }
 
        //- The signal number being used
        static int signalNumber() noexcept { return signal_; }
 
        //- Set/reset signal handler
        static void set(bool verbose=false);
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //