timeControl.H

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    Copyright (C) 2019, 2025 OpenCFD Ltd.
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License
    This file is part of OpenFOAM.
 
    OpenFOAM is free software: you can redistribute it and/or modify it
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Class
    Foam::timeControl
 
Description
    General time dependent execution controller.
    The execution parameters are given by the "Control" and (optionally)
    the "Interval", with the default being to execute every time-step.
 
    For example, an "execute" control every tenth write time:
    \verbatim
        executeControl  writeTime;
        executeInterval 10;
    \endverbatim
 
    See Foam::functionObject for a list of known selection types.
 
SourceFiles
    timeControl.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef timeControl_H
#define timeControl_H
 
#include "Time.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
/*---------------------------------------------------------------------------*\
                         Class timeControl Declaration
\*---------------------------------------------------------------------------*/
 
class timeControl
{
public:
 
    //- The time control options
    enum timeControls
    {
        ocNone = 0,           
        ocAlways,             
        ocTimeStep,           
        ocWriteTime,          
        ocRunTime,            
        ocAdjustableRunTime,  
        ocClockTime,          
        ocCpuTime,            
        ocOnStart,            
        ocOnEnd               
    };
 
 
private:
 
        //- The selection names for timeControls enumerations
        static const Enum<timeControls> controlNames_;
 
 
    // Private Data
 
        //- Time object
        const Time& time_;
 
        //- The prefix for the control name (eg, "write", "execute", ...)
        const word prefix_;
 
        //- Type of time control
        timeControls timeControl_;
 
        //- Execution interval steps (timeStep | writeTime).
        //  A value <= 1 means execute at every time-step or writeTime.
        label intInterval_;
 
        //- Execution interval (clockTime | runTime | cpuTime | adjustable)
        scalar interval_;
 
        //- Index of previous execution
        label executionIndex_;
 
 
    // Private Member Functions
 
        //- No copy construct
        timeControl(const timeControl&) = delete;
 
        //- No copy assignment
        void operator=(const timeControl&) = delete;
 
 
public:
 
    // Constructors
 
        //- Construct a control object that executes each time-step.
        //  For places where a time control object is required, but should
        //  not actually intervene.
        explicit timeControl(const Time& runTime, const word& prefix = "");
 
        //- Construct from Time object, dictionary and the prefix for the
        //- control name.
        timeControl
        (
            const Time& runTime,
            const dictionary& dict,
            const word& prefix
        );
 
 
    //- Destructor
    ~timeControl() = default;
 
 
    // Member Functions
 
        //- Identify if a timeControl object is present in the dictionary
        //  Matches prefix + "Control"
        static bool entriesPresent(const dictionary& dict, const word& prefix);
 
        //- Read from dictionary
        void read(const dictionary& dict);
 
        //- Return the Time
        inline const Time& time() const;
 
        //- Return the name (prefix)
        inline const word& name() const;
 
        //- Return the named control enumeration as its 'type'
        inline const word& type() const;
 
        //- Reset control to 'always' - ie, no intervention
        void clear();
 
        //- Return the control enumeration
        inline timeControls control() const;
 
        //- Return true if the control will always execute - ie, no intervention
        inline bool always() const;
 
        //- Flag to indicate whether to execute
        bool execute();
 
        //- Return interval
        inline scalar interval() const;
 
        //- Return the index of the previous execution
        inline label executionIndex() const;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#include "timeControlI.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //