Executes system calls, entered in the form of string lists. More...

#include <systemCall.H>

Inheritance diagram for systemCall:

Collaboration diagram for systemCall:

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Public Member Functions
	TypeName ("systemCall")
	Runtime type information.
	systemCall (const word &name, const Time &runTime, const dictionary &dict)
	Construct from name, Time and dictionary.
virtual	~systemCall ()=default
	Destructor.
virtual bool	read (const dictionary &dict)
	Read the function-object dictionary.
virtual bool	execute ()
	Execute the function-object operations.
virtual bool	write ()
	Write the function-object results.
virtual bool	end ()
	Execute the "endCalls" at the final time-loop.
Public Member Functions inherited from functionObject
	declareRunTimeSelectionTable (autoPtr, functionObject, dictionary,(const word &name, const Time &runTime, const dictionary &dict),(name, runTime, dict))
	functionObject (const word &name, const bool withNamePrefix=defaultUseNamePrefix)
	Construct from components.
autoPtr< functionObject >	clone () const
	Return clone.
virtual	~functionObject ()=default
	Destructor.
virtual const word &	type () const =0
	Runtime type information.
const word &	name () const noexcept
	Return the name of this functionObject.
bool	useNamePrefix () const noexcept
	Return the flag for adding a scoping name prefix.
bool	useNamePrefix (bool on) noexcept
	Modify the flag for adding a scoping name prefix.
virtual bool	execute (const label subIndex)
	Execute using the specified subIndex.
virtual bool	adjustTimeStep ()
	Called at the end of Time::adjustDeltaT() if adjustTime is true.
virtual bool	filesModified () const
	Did any file get changed during execution?
virtual void	updateMesh (const mapPolyMesh &mpm)
	Update for changes of mesh.
virtual void	movePoints (const polyMesh &mesh)
	Update for changes of mesh.

Protected Member Functions
label	dispatch (const stringList &calls)
	Dispatch specified calls.
	systemCall (const systemCall &)=delete
	No copy construct.
void	operator= (const systemCall &)=delete
	No copy assignment.
Protected Member Functions inherited from functionObject
word	scopedName (const word &name) const
	Return a scoped (prefixed) name.

Protected Attributes
stringList	executeCalls_
	List of calls to execute - every step.
stringList	writeCalls_
	List of calls to execute - write steps.
stringList	endCalls_
	List of calls to execute when exiting the time-loop.
bool	masterOnly_
	Perform system calls on the master only.

Additional Inherited Members
Static Public Member Functions inherited from functionObject
static autoPtr< functionObject >	New (const word &name, const Time &runTime, const dictionary &dict)
	Select from dictionary, based on its "type" entry.
Public Attributes inherited from functionObject
bool	log
	Flag to write log into Info.
Static Public Attributes inherited from functionObject
static int	debug
	Flag to execute debug content.
static bool	postProcess
	Global post-processing mode switch.
static bool	defaultUseNamePrefix
	Global default for useNamePrefix.
static word	outputPrefix
	Directory prefix.

Detailed Description

Executes system calls, entered in the form of string lists.

Calls can be made at the following points in the calculation:

every time step
every output time
end of the calculation

Usage

Minimal example by using system/controlDict.functions:

systemCallFO
{
    // Mandatory entries
    type        systemCall;
    libs        (utilityFunctionObjects);
    ...

    // Optional entries
    executeCalls
    (
        "echo execute"
    );
    writeCalls
    (
        "echo === writing data ==="
    );
    endCalls
    (
        "echo === echoing .bashrc ==="
        "cat ~/.bashrc"
        "echo \*\*\* done \*\*\*"
    );

    // Inherited entries
    ...
}

where the entries mean:

Property	Description	Type	Reqd	Deflt
`type`	Type name: systemCall	word	yes	-
`libs`	Library name: utilityFunctionObjects	word	yes	-
`executeCalls`	List of calls on execute	stringList	yes	-
`writeCalls`	List of calls on write	stringList	yes	-
`endCalls`	List of calls on end	stringList	yes	-
`master`	Execute on master only	bool	no	false

The inherited entries are elaborated in:

functionObject.H

Note: Since this function object executes system calls, there is a potential security risk. In order to use the systemCall function object, the allowSystemOperations must be set to '1'; otherwise, system calls will not be allowed.

Additionally, since the system commands are normally sent via the shell, special shell character may require backslash escaping.

Source files

Definition at line 154 of file systemCall.H.