proc.h

Variables

proc              X

Macros

SIDL              X
SLOAD             X
SLOCK             X
SRUN              X
SSLEEP            X
SSTOP             X
SSWAP             X
SSYS              X
STRC              X
SWAIT             X
SWTED             X
SZOMB             X

struct's

proc              X

   1: /*
   2:  * One structure allocated per active
   3:  * process. It contains all data needed
   4:  * about the process while the
   5:  * process may be swapped out.
   6:  * Other per process data (user.h)
   7:  * is swapped with the process.
   8:  */
   9: struct  proc
  10: {
  11:     char    p_stat;
  12:     char    p_flag;
  13:     char    p_pri;      /* priority, negative is high */
  14:     char    p_sig;      /* signal number sent to this process */
  15:     char    p_uid;      /* user id, used to direct tty signals */
  16:     char    p_time;     /* resident time for scheduling */
  17:     char    p_cpu;      /* cpu usage for scheduling */
  18:     char    p_nice;     /* nice for scheduling */
  19:     int p_ttyp;     /* controlling tty */
  20:     int p_pid;      /* unique process id */
  21:     int p_ppid;     /* process id of parent */
  22:     int p_addr;     /* address of swappable image */
  23:     int p_size;     /* size of swappable image (*64 bytes) */
  24:     int p_wchan;    /* event process is awaiting */
  25:     int *p_textp;   /* pointer to text structure */
  26: } proc[NPROC];
  27: 
  28: /* stat codes */
  29: #define SSLEEP  1       /* sleeping on high priority */
  30: #define SWAIT   2       /* sleeping on low priority */
  31: #define SRUN    3       /* running */
  32: #define SIDL    4       /* intermediate state in process creation */
  33: #define SZOMB   5       /* intermediate state in process termination */
  34: #define SSTOP   6       /* process being traced */
  35: 
  36: /* flag codes */
  37: #define SLOAD   01      /* in core */
  38: #define SSYS    02      /* scheduling process */
  39: #define SLOCK   04      /* process cannot be swapped */
  40: #define SSWAP   010     /* process is being swapped out */
  41: #define STRC    020     /* process is being traced */
  42: #define SWTED   040     /* another tracing flag */