1 /* proc.h 3.6 07/11/80 */ 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 * NB: OFFSETS HERE ARE ALSO DEFINED IN proc.m 12 */ 13 struct proc 14 { 15 struct proc *p_link; /* linked list of running processes */ 16 struct proc *p_rlink; 17 struct pte *p_addr; /* u-area kernel map address */ 18 char p_usrpri; /* user-priority based on p_cpu and p_nice */ 19 char p_pri; /* priority, negative is high */ 20 char p_cpu; /* cpu usage for scheduling */ 21 char p_stat; 22 char p_time; /* resident time for scheduling */ 23 char p_nice; /* nice for cpu usage */ 24 char p_slptime; /* time since last block */ 25 char p_cursig; 26 long p_sig; /* signals pending to this process */ 27 long p_siga0; /* low bit of 2 bit signal action */ 28 long p_siga1; /* high bit of 2 bit signal action */ 29 #define p_ignsig p_siga0 /* ignored signal mask */ 30 int p_flag; 31 short p_uid; /* user id, used to direct tty signals */ 32 short p_pgrp; /* name of process group leader */ 33 short p_pid; /* unique process id */ 34 short p_ppid; /* process id of parent */ 35 short p_poip; /* count of page outs in progress */ 36 short p_szpt; /* copy of page table size */ 37 size_t p_tsize; /* size of text (clicks) */ 38 size_t p_dsize; /* size of data space (clicks) */ 39 size_t p_ssize; /* copy of stack size (clicks) */ 40 size_t p_rssize; /* current resident set size in clicks */ 41 size_t p_swrss; /* resident set size before last swap */ 42 swblk_t p_swaddr; /* disk address of u area when swapped */ 43 caddr_t p_wchan; /* event process is awaiting */ 44 struct text *p_textp; /* pointer to text structure */ 45 int p_clktim; /* time to alarm clock signal */ 46 struct pte *p_p0br; /* page table base P0BR */ 47 struct proc *p_xlink; /* linked list of procs sharing same text */ 48 short p_faults; /* faults in last second */ 49 short p_aveflt; /* average of p_faults into past */ 50 short p_ndx; /* proc index for memall (because of vfork) */ 51 short p_idhash; /* hashed based on p_pid for kill+exit+... */ 52 struct proc *p_pptr; /* pointer to process structure of parent */ 53 }; 54 55 #define PIDHSZ 63 56 #define PIDHASH(pid) ((pid) % PIDHSZ) 57 58 #ifdef KERNEL 59 short pidhash[PIDHSZ]; 60 61 struct proc *pfind(); 62 #endif 63 64 #ifdef KERNEL 65 extern struct proc proc[]; /* the proc table itself */ 66 67 #ifdef FASTVAX 68 #define NQS 32 /* 32 run queues */ 69 struct prochd { 70 struct proc *ph_link; /* linked list of running processes */ 71 struct proc *ph_rlink; 72 } qs[NQS]; 73 int whichqs; /* bit mask summarizing non-empty qs's */ 74 #else 75 struct proc *runq; 76 #endif 77 #endif 78 79 /* stat codes */ 80 #define SSLEEP 1 /* awaiting an event */ 81 #define SWAIT 2 /* (abandoned state) */ 82 #define SRUN 3 /* running */ 83 #define SIDL 4 /* intermediate state in process creation */ 84 #define SZOMB 5 /* intermediate state in process termination */ 85 #define SSTOP 6 /* process being traced */ 86 87 /* flag codes */ 88 #define SLOAD 0x000001 /* in core */ 89 #define SSYS 0x000002 /* swapper or pager process */ 90 #define SLOCK 0x000004 /* process being swapped out */ 91 #define SSWAP 0x000008 /* save area flag */ 92 #define STRC 0x000010 /* process is being traced */ 93 #define SWTED 0x000020 /* another tracing flag */ 94 #define SULOCK 0x000040 /* user settable lock in core */ 95 #define SPAGE 0x000080 /* process in page wait state */ 96 #define SKEEP 0x000100 /* another flag to prevent swap out */ 97 #define SDLYU 0x000200 /* delayed unlock of pages */ 98 #define SWEXIT 0x000400 /* working on exiting */ 99 #define SPHYSIO 0x000800 /* doing physical i/o (bio.c) */ 100 #define SVFORK 0x001000 /* process resulted from vfork() */ 101 #define SVFDONE 0x002000 /* another vfork flag */ 102 #define SNOVM 0x004000 /* no vm, parent in a vfork() */ 103 #define SPAGI 0x008000 /* init data space on demand, from inode */ 104 #define SANOM 0x010000 /* system detected anomalous vm behavior */ 105 #define SUANOM 0x020000 /* user warned of anomalous vm behavior */ 106 #define STIMO 0x040000 /* timing out during sleep */ 107 #define SDETACH 0x080000 /* detached inherited by init */ 108 #define SNUSIG 0x100000 /* using new signal mechanism */ 109 110 /* 111 * parallel proc structure 112 * to replace part with times 113 * to be passed to parent process 114 * in ZOMBIE state. 115 * 116 * THIS SHOULD BE DONE WITH A union() CONSTRUCTION 117 */ 118 struct xproc 119 { 120 struct proc *xp_link; 121 struct proc *xp_rlink; 122 struct pte *xp_addr; 123 char xp_usrpri; 124 char xp_pri; /* priority, negative is high */ 125 char xp_cpu; /* cpu usage for scheduling */ 126 char xp_stat; 127 char xp_time; /* resident time for scheduling */ 128 char xp_nice; /* nice for cpu usage */ 129 char xp_slptime; 130 char p_cursig; 131 int xp_sig; /* signals pending to this process */ 132 int xp_siga0; 133 int xp_siga1; 134 int xp_flag; 135 short xp_uid; /* user id, used to direct tty signals */ 136 short xp_pgrp; /* name of process group leader */ 137 short xp_pid; /* unique process id */ 138 short xp_ppid; /* process id of parent */ 139 short xp_xstat; /* Exit status for wait */ 140 struct vtimes xp_vm; 141 }; 142