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- /*
- * One structure allocated per active
- * process. It contains all data needed
- * about the process while the
- * process may be swapped out.
- * Other per process data (user.h)
- * is swapped with the process.
- */
- struct proc
- {
- char p_stat;
- char p_flag;
- char p_pri; /* priority, negative is high */
- char p_sig; /* signal number sent to this process */
- char p_uid; /* user id, used to direct tty signals */
- char p_time; /* resident time for scheduling */
- char p_cpu; /* cpu usage for scheduling */
- char p_nice; /* nice for scheduling */
- int p_ttyp; /* controlling tty */
- int p_pid; /* unique process id */
- int p_ppid; /* process id of parent */
- int p_addr; /* address of swappable image */
- int p_size; /* size of swappable image (*64 bytes) */
- int p_wchan; /* event process is awaiting */
- int *p_textp; /* pointer to text structure */
- } proc[NPROC];
-
- /* stat codes */
- #define SSLEEP 1 /* sleeping on high priority */
- #define SWAIT 2 /* sleeping on low priority */
- #define SRUN 3 /* running */
- #define SIDL 4 /* intermediate state in process creation */
- #define SZOMB 5 /* intermediate state in process termination */
- #define SSTOP 6 /* process being traced */
-
- /* flag codes */
- #define SLOAD 01 /* in core */
- #define SSYS 02 /* scheduling process */
- #define SLOCK 04 /* process cannot be swapped */
- #define SSWAP 010 /* process is being swapped out */
- #define STRC 020 /* process is being traced */
- #define SWTED 040 /* another tracing flag */
-