proc.h

Macros

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

struct's

proc              X
xproc             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:     char    p_stat;
  11:     char    p_flag;
  12:     char    p_pri;      /* priority, negative is high */
  13:     char    p_time;     /* resident time for scheduling */
  14:     char    p_cpu;      /* cpu usage for scheduling */
  15:     char    p_nice;     /* nice for cpu usage */
  16:     short   p_sig;      /* signals pending to this process */
  17:     short   p_uid;      /* user id, used to direct tty signals */
  18:     short   p_pgrp;     /* name of process group leader */
  19:     short   p_pid;      /* unique process id */
  20:     short   p_ppid;     /* process id of parent */
  21:     short   p_addr;     /* address of swappable image */
  22:     short   p_size;     /* size of swappable image (clicks) */
  23:     caddr_t p_wchan;    /* event process is awaiting */
  24:     struct text *p_textp;   /* pointer to text structure */
  25:     struct proc *p_link;    /* linked list of running processes */
  26:     int p_clktim;   /* time to alarm clock signal */
  27: };
  28: 
  29: extern struct proc proc[];  /* the proc table itself */
  30: 
  31: /* stat codes */
  32: #define SSLEEP  1       /* awaiting an event */
  33: #define SWAIT   2       /* (abandoned state) */
  34: #define SRUN    3       /* running */
  35: #define SIDL    4       /* intermediate state in process creation */
  36: #define SZOMB   5       /* intermediate state in process termination */
  37: #define SSTOP   6       /* process being traced */
  38: 
  39: /* flag codes */
  40: #define SLOAD   01      /* in core */
  41: #define SSYS    02      /* scheduling process */
  42: #define SLOCK   04      /* process cannot be swapped */
  43: #define SSWAP   010     /* process is being swapped out */
  44: #define STRC    020     /* process is being traced */
  45: #define SWTED   040     /* another tracing flag */
  46: #define SULOCK  0100        /* user settable lock in core */
  47: 
  48: /*
  49:  * parallel proc structure
  50:  * to replace part with times
  51:  * to be passed to parent process
  52:  * in ZOMBIE state.
  53:  */
  54: struct  xproc {
  55:     char    xp_stat;
  56:     char    xp_flag;
  57:     char    xp_pri;     /* priority, negative is high */
  58:     char    xp_time;    /* resident time for scheduling */
  59:     char    xp_cpu;     /* cpu usage for scheduling */
  60:     char    xp_nice;    /* nice for cpu usage */
  61:     short   xp_sig;     /* signals pending to this process */
  62:     short   xp_uid;     /* user id, used to direct tty signals */
  63:     short   xp_pgrp;    /* name of process group leader */
  64:     short   xp_pid;     /* unique process id */
  65:     short   xp_ppid;    /* process id of parent */
  66:     short   xp_xstat;   /* Exit status for wait */
  67:     time_t  xp_utime;   /* user time, this proc */
  68:     time_t  xp_stime;   /* system time, this proc */
  69: };