i86/mtx/mtx/samples/LAB5.timer/type.h

   1 typedef unsigned short ushort;
   2
   3 /*********** MTX Multitasking System ************/
   4
   5 #define NULL      0
   6 #define NPROC     9
   7 #define SSIZE  1024
   8 #define NQUEUE NPROC    // at most NPROC ready queues
   9
  10 #define FREE      0     // proc statuc
  11 #define READY     1
  12 #define SLEEP     2
  13 #define ZOMBIE    3
  14
  15
  16 typedef struct proc{
  17     struct proc *next;
  18            int  *ksp; /* offset = 4 bytes */
  19
  20            int   uss, usp;  // at 4, 6
  21
  22            int   pid;       /* pid = 0 to NPROC-1 */
  23            int   status;
  24            int   pri;      /* scheduling priority */
  25            int   ppid;     /* parent pid */
  26
  27            struct proc *parent;
  28            int    event;
  29            char   *deathCry;
  30            int    exitValue;
  31
  32            char name[32];
  33            int time;
  34
  35            int   kstack[SSIZE];   // Kmode per process stack
  36 }PROC;
  37
  38 struct rqueue{
  39        int priority;    // 0, 1,...NQUEUE-1
  40        PROC *queue;     // PROC queue of this priority level
  41 };
  42
  43 extern struct rqueue rqueue[ ];
  44
  45 extern PROC proc[NPROC], *running, *freeList, *sleepList;
  46 extern int nproc;
  47