#ifndef _UNIX_H
#define _UNIX_H

#include "config.h"

#ifndef NUMLINKS
#define NUMLINKS 4
#endif

extern int  availbyte(int fd);
extern char inbyte(int fd);
extern int  outbyte(int fd,char x);
/*
  Under UNIX we use named FS FIFOs for node-node communication.
  The FIFOs are connected to links. 
  All port fifo file deescriptors
  
    
    [N0} P0   --- P0 [N1]
    P1
    |
    |
    P2
    [N2] 
*/
extern char *portfilerd[NUMPORTS];
extern char *portfilewr[NUMPORTS];


int   ioinit();
int   iowait(context_t *C, int nonblock);

char* readFile(char *path);

// FIFO communication 
int   port_open();
void  port_close();

// Timer support
int   timer_init();
int   timer_start(int index, int millis);
int   timer_stop(int index);

void vLog(const char* fmtStr, ...);

#endif