sigWriteNow.H

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License
    This file is part of OpenFOAM.

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Class
    Foam::sigWriteNow

Description
    Signal handler for interrupt defined by OptimisationSwitches::writeNowSignal

    Write once and continue.

SourceFiles
    sigWriteNow.C

\*---------------------------------------------------------------------------*/

#ifndef sigWriteNow_H
#define sigWriteNow_H

#include <signal.h>

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

namespace Foam
{

class Time;

/*---------------------------------------------------------------------------*\
                         Class sigWriteNow Declaration
\*---------------------------------------------------------------------------*/

class sigWriteNow
{
    // Private Data

        //- Number of signal to use
        static int signal_;

        //- Pointer to Time
        static Time* runTimePtr_;

        //- Saved old signal trapping setting
        static struct sigaction oldAction_;


    // Private Member Functions

        static void sigHandler(int);


public:

    friend class sigStopAtWriteNow;

    //- wip. Have setter have access to signal_
    friend class addwriteNowSignalToOpt;

    // Constructors

        //- Construct null
        sigWriteNow();

        //- Construct from components
        sigWriteNow(const bool verbose, Time& runTime);


    //- Destructor
    ~sigWriteNow();


    // Member Functions

        //- (re)set signal catcher
        static void set(const bool verbose);

        //- Is active?
        bool active() const;
};


// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

} // End namespace Foam

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

#endif

// ************************************************************************* //