/* file: main.h */
/*
 * Tom Laramee
 * ECE 671 - Simulation #2 - Selective Repeat
 *
 * main.h - header file 
 */

#define TRUE  1
#define FALSE 0

#define YES 1
#define NO  0

#define OLD 0
#define NEW 1

#define fatal(F,M) { printf ("\nFatal!\n%s\n%s\n\n", F, M); exit(-1); }

#define MAX(x, y)  (x>=y)?x:y  

/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~ types of events ~~~~~~~~~~~~~~~~~~~~ */
#define FrameArrival 0
#define AckArrival   1
#define Departure    2
#define ChksumErr    3
#define TimeOut      4
#define NodeFree     5


#define printEVENT(x)  (x==FrameArrival)     ?"FrameArrival      ":  \
                       (x==AckArrival)       ?"AckArrival        ":  \
                       (x==Departure)        ?"Departure         ":  \
                       (x==ChksumErr)        ?"ChksumErr         ":  \
                       (x==TimeOut)          ?"TimeOut           ":  \
                       (x==NodeFree)         ?"NodeFree          ":  \
                       "OTHER" 


/* ~~~~~~~~~~~~~~~~~~~~~~~ prototypes ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */

       /*  -------------------- pre-simulation functions */
short initParams(int argc, char * argv[]);
void initAll( void );
/* void showParameters(FILE * fp); */

      /* --------------------------------debugging aids */
void printQueue( int node );
/* void showCurrentEvent(FILE * fp); */
/* void showEventList(FILE * fp);    */
void queueItUp( int node );

     /* ----------------------event generation functions */
void gen_arrival(int node);
void gen_ackarrival(int node);
void gen_depart(int node);
void gen_nodefree(int node);
void gen_timeout(int node, short kind);

     /* ---------------------event processing functions */
void processFrameArrival( void );
void processAckArrival( void );
void processDeparture( void );
void processNodeFree( void );
void processTimeOut( void );