/* ------
   main2.c: simple simulation
   ------ */

#include <stdio.h>
#include <stdlib.h>
#include <ProSim4.h>


double ARRIVAL_DELAY;
double SERVICE_DELAY;


PCBType *Server;	/* The server thread */
PCBType *Generator;	/* The thread that create client threads */

/* -------------------------------------------------------
   Client()
   ------------------------------------------------------- */
void ClientProc()
{
   printf("Now = %lf: Client arrives\n", GetSimTime());
   Enqueue(TAIL, Server, 0, 0, 0);
   ReActivate(Server, 0, 0);

   Passivate(0, 0);

   printf("Now = %lf: Client is done... my delay = %lf\n", 
	   GetSimTime(),
	   GetSimTime() - GetMyArrivalTime() );
   Terminate();
}


/* -------------------------------------------------------
   Client generator process
   ------------------------------------------------------- */
void GeneratorProc()
{
   printf("Generator has started.\n");

   while(1)
    { 
      Hold( ARRIVAL_DELAY );
      Generate("Cli", ClientProc, 0);
    }
}



/* -------------------------------------------------------
   Server()
   ------------------------------------------------------- */
void ServerProc()
{
   PCBType *Client;

   while (1)
   {  
      if (MyQLength() == 0)
      {  Passivate(0, 0);
      }

      Dequeue(HEAD, &Client, NULL, NULL, NULL);
      Hold( SERVICE_DELAY );

      ReActivate(Client, 0, 0);
   }
}

int main(int argc, char **argv)
{
   double SimLength;

   printf("Length of simulation run = "); scanf("%lf", &SimLength);

   printf("Arrival delay = "); scanf("%lf", &ARRIVAL_DELAY);
   printf("Service delay = "); scanf("%lf", &SERVICE_DELAY);

   printf("Init Prosim\n");
   InitProsim(1000, 1000, 1000);

   printf("Create generator\n");
   Generator = Generate("Gen", GeneratorProc, 0);

   printf("Create server\n");
   Server = Generate("Serv", ServerProc, 0);

   printf("Start simulation....\n");
   StartSimulate(SimLength);

   printf("Done.\n");
}