projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| e78f0c8d BJ |
1 | /* proc.h 2.1 1/5/80 */ |
| 2 | ||
| 3 | /* | |
| 4 | * One structure allocated per active | |
| 5 | * process. It contains all data needed | |
| 6 | * about the process while the | |
| 7 | * process may be swapped out. | |
| 8 | * Other per process data (user.h) | |
| 9 | * is swapped with the process. | |
| 10 | */ | |
| 11 | struct proc | |
| 12 | { | |
| 13 | char p_stat; | |
| 14 | char p_slptime; /* time since last block */ | |
| 15 | short p_flag; | |
| 16 | short p_cpu; /* cpu usage for scheduling */ | |
| 17 | short p_time; /* resident time for scheduling */ | |
| 18 | char p_pri; /* priority, negative is high */ | |
| 19 | char p_nice; /* nice for cpu usage */ | |
| 20 | short p_sig; /* signals pending to this process */ | |
| 21 | short p_uid; /* user id, used to direct tty signals */ | |
| 22 | short p_pgrp; /* name of process group leader */ | |
| 23 | short p_pid; /* unique process id */ | |
| 24 | short p_ppid; /* process id of parent */ | |
| 25 | short p_addr[UPAGES]; /* page table entries of u-area */ | |
| 26 | short p_poip; /* count of page outs in progress */ | |
| 27 | short p_szpt; /* copy of page table size */ | |
| 28 | size_t p_tsize; /* size of text (clicks) */ | |
| 29 | size_t p_dsize; /* size of data space (clicks) */ | |
| 30 | size_t p_ssize; /* copy of stack size (clicks) */ | |
| 31 | size_t p_rssize; /* current resident set size in clicks */ | |
| 32 | size_t p_swrss; /* resident set size before last swap */ | |
| 33 | swblk_t p_swaddr; /* disk address of u area when swapped */ | |
| 34 | caddr_t p_wchan; /* event process is awaiting */ | |
| 35 | struct text *p_textp; /* pointer to text structure */ | |
| 36 | struct proc *p_link; /* linked list of running processes */ | |
| 37 | int p_clktim; /* time to alarm clock signal */ | |
| 38 | struct pte *p_p0br; /* page table base P0BR */ | |
| 39 | struct proc *p_xlink; /* linked list of procs sharing same text */ | |
| 40 | short p_faults; /* faults in last second */ | |
| 41 | short p_aveflt; /* average of p_faults into past */ | |
| 42 | short p_ndx; /* proc index for memall (because of vfork) */ | |
| 43 | }; | |
| 44 | ||
| 45 | #ifdef KERNEL | |
| 46 | extern struct proc proc[]; /* the proc table itself */ | |
| 47 | ||
| 48 | struct proc *runq; /* pointer to linked list of running processes */ | |
| 49 | #endif | |
| 50 | ||
| 51 | /* stat codes */ | |
| 52 | #define SSLEEP 1 /* awaiting an event */ | |
| 53 | #define SWAIT 2 /* (abandoned state) */ | |
| 54 | #define SRUN 3 /* running */ | |
| 55 | #define SIDL 4 /* intermediate state in process creation */ | |
| 56 | #define SZOMB 5 /* intermediate state in process termination */ | |
| 57 | #define SSTOP 6 /* process being traced */ | |
| 58 | ||
| 59 | /* flag codes */ | |
| 60 | #define SLOAD 0x0001 /* in core */ | |
| 61 | #define SSYS 0x0002 /* swapper or pager process */ | |
| 62 | #define SLOCK 0x0004 /* process being swapped out */ | |
| 63 | #define SSWAP 0x0008 /* save area flag */ | |
| 64 | #define STRC 0x0010 /* process is being traced */ | |
| 65 | #define SWTED 0x0020 /* another tracing flag */ | |
| 66 | #define SULOCK 0x0040 /* user settable lock in core */ | |
| 67 | #define SPAGE 0x0080 /* process in page wait state */ | |
| 68 | #define SKEEP 0x0100 /* another flag to prevent swap out */ | |
| 69 | #define SDLYU 0x0200 /* delayed unlock of pages */ | |
| 70 | #define SWEXIT 0x0400 /* working on exiting */ | |
| 71 | #define SUNUSED 0x0800 /* used to be page out in progress */ | |
| 72 | #define SVFORK 0x1000 /* process resulted from vfork() */ | |
| 73 | #define SVFDONE 0x2000 /* another vfork flag */ | |
| 74 | #define SNOVM 0x4000 /* no vm, parent in a vfork() */ | |
| 75 | #define SPAGI 0x8000 /* init data space on demand, from inode */ | |
| 76 | ||
| 77 | /* | |
| 78 | * parallel proc structure | |
| 79 | * to replace part with times | |
| 80 | * to be passed to parent process | |
| 81 | * in ZOMBIE state. | |
| 82 | */ | |
| 83 | struct xproc | |
| 84 | { | |
| 85 | char xp_stat; | |
| 86 | char xp_slptime; | |
| 87 | short xp_flag; | |
| 88 | short xp_cpu; /* cpu usage for scheduling */ | |
| 89 | short xp_time; /* resident time for scheduling */ | |
| 90 | char xp_pri; /* priority, negative is high */ | |
| 91 | char xp_nice; /* nice for cpu usage */ | |
| 92 | short xp_sig; /* signals pending to this process */ | |
| 93 | short xp_uid; /* user id, used to direct tty signals */ | |
| 94 | short xp_pgrp; /* name of process group leader */ | |
| 95 | short xp_pid; /* unique process id */ | |
| 96 | short xp_ppid; /* process id of parent */ | |
| 97 | short xp_xstat; /* Exit status for wait */ | |
| 98 | time_t xp_utime; /* user time, this proc */ | |
| 99 | time_t xp_stime; /* system time, this proc */ | |
| 100 | }; |