// -*- Mode: C++ -*-
// navi.cc
// NavierStokes Class Caller

#include "navi.h"

String	szProgName = "navi";

Bool	bInterrupted = False;

#define	USE_SIGNAL_CONTROLE

#ifdef USE_SIGNAL_CONTROLE
 #include <unistd.h>
 #include <signal.h>
 #define	MY_SIGNAL	SIGUSR1
 void InterruptFunction (int n)
 {
	cerr <<	szProgName << ":"
#ifdef TIME_RECORD
	     << getTimeString () << ":"
#endif
	     << "Interrupt (" << n << ") Received!" << endl;
	
	bInterrupted = True;
	signal (MY_SIGNAL, InterruptFunction);
 }
#endif

void main (int nArgc, String *pszArgv)
{
	cerr << szProgName << ":"
	     << "Navier-Stokes Fuild Motion Simulator" << endl;
#ifdef USE_SIGNAL_CONTROLE
	signal (MY_SIGNAL, InterruptFunction);
	cerr << szProgName << ":Process-ID is " << getpid () << "." <<endl;
#endif
	
	NavierStokes	F;
	F.setParams (nArgc, pszArgv);
	
	int	nReadUnits = F.nReadFileLastUnit ();
	if (nReadUnits > 0) {
		cerr << szProgName << ":"
		     << nReadUnits
		     << " Units Readed from <"
		     << F.szLoadFileName << ">."
		     << endl;
	}{
		cerr << szProgName << ":"
		     << "New Initialized Field is used." << endl;
	}
	cerr << szProgName << ":"
	     << "Save File Name is <" << F.szSaveFileName << ">." << endl;
	
	int	n = 0;
	for (;;) {
		if (F.SaveStep ()) {
			
			cerr << szProgName << ":"
#ifdef TIME_RECORD
			     << getTimeString () << ":"
#endif
			     << "Saved at Time=" << F.nTime << endl;
			
			if (bInterrupted)
				break;
		}
		// Do Calculation Stap
		F.CalculationStep ();
	}
	
	cerr << szProgName << ":"
	     << "Flushed file <" << F.szSaveFileName << "> "
	     << "and Terminated." << endl;
}