1 /* proc.h 4.10 82/01/30 */ 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 struct proc *p_link; /* linked list of running processes */ 14 struct proc *p_rlink; 15 struct pte *p_addr; /* u-area kernel map address */ 16 char p_usrpri; /* user-priority based on p_cpu and p_nice */ 17 char p_pri; /* priority, negative is high */ 18 char p_cpu; /* cpu usage for scheduling */ 19 char p_stat; 20 char p_time; /* resident time for scheduling */ 21 char p_nice; /* nice for cpu usage */ 22 char p_slptime; /* time since last block */ 23 char p_cursig; 24 long p_sig; /* signals pending to this process */ 25 long p_siga0; /* low bit of 2 bit signal action */ 26 long p_siga1; /* high bit of 2 bit signal action */ 27 #define p_ignsig p_siga0 /* ignored signal mask */ 28 int p_flag; 29 short p_uid; /* user id, used to direct tty signals */ 30 short p_pgrp; /* name of process group leader */ 31 short p_pid; /* unique process id */ 32 short p_ppid; /* process id of parent */ 33 short p_poip; /* count of page outs in progress */ 34 short p_szpt; /* copy of page table size */ 35 size_t p_tsize; /* size of text (clicks) */ 36 size_t p_dsize; /* size of data space (clicks) */ 37 size_t p_ssize; /* copy of stack size (clicks) */ 38 size_t p_rssize; /* current resident set size in clicks */ 39 size_t p_maxrss; /* copy of u.u_limit[MAXRSS] */ 40 size_t p_swrss; /* resident set size before last swap */ 41 swblk_t p_swaddr; /* disk address of u area when swapped */ 42 caddr_t p_wchan; /* event process is awaiting */ 43 struct text *p_textp; /* pointer to text structure */ 44 int p_clktim; /* time to alarm clock signal */ 45 struct pte *p_p0br; /* page table base P0BR */ 46 struct proc *p_xlink; /* linked list of procs sharing same text */ 47 short p_cpticks; /* ticks of cpu time */ 48 float p_pctcpu; /* %cpu for this process during p_time */ 49 short p_ndx; /* proc index for memall (because of vfork) */ 50 short p_idhash; /* hashed based on p_pid for kill+exit+... */ 51 struct proc *p_pptr; /* pointer to process structure of parent */ 52 }; 53 54 #define PIDHSZ 63 55 #define PIDHASH(pid) ((pid) % PIDHSZ) 56 57 #ifdef KERNEL 58 short pidhash[PIDHSZ]; 59 60 struct proc *pfind(); 61 #endif 62 63 #ifdef KERNEL 64 struct proc *proc, *procNPROC; /* the proc table itself */ 65 int nproc; 66 67 #define NQS 32 /* 32 run queues */ 68 struct prochd { 69 struct proc *ph_link; /* linked list of running processes */ 70 struct proc *ph_rlink; 71 } qs[NQS]; 72 int whichqs; /* bit mask summarizing non-empty qs's */ 73 #endif 74 75 /* stat codes */ 76 #define SSLEEP 1 /* awaiting an event */ 77 #define SWAIT 2 /* (abandoned state) */ 78 #define SRUN 3 /* running */ 79 #define SIDL 4 /* intermediate state in process creation */ 80 #define SZOMB 5 /* intermediate state in process termination */ 81 #define SSTOP 6 /* process being traced */ 82 83 /* flag codes */ 84 #define SLOAD 0x000001 /* in core */ 85 #define SSYS 0x000002 /* swapper or pager process */ 86 #define SLOCK 0x000004 /* process being swapped out */ 87 #define SSWAP 0x000008 /* save area flag */ 88 #define STRC 0x000010 /* process is being traced */ 89 #define SWTED 0x000020 /* another tracing flag */ 90 #define SULOCK 0x000040 /* user settable lock in core */ 91 #define SPAGE 0x000080 /* process in page wait state */ 92 #define SKEEP 0x000100 /* another flag to prevent swap out */ 93 #define SDLYU 0x000200 /* delayed unlock of pages */ 94 #define SWEXIT 0x000400 /* working on exiting */ 95 #define SPHYSIO 0x000800 /* doing physical i/o (bio.c) */ 96 #define SVFORK 0x001000 /* process resulted from vfork() */ 97 #define SVFDONE 0x002000 /* another vfork flag */ 98 #define SNOVM 0x004000 /* no vm, parent in a vfork() */ 99 #define SPAGI 0x008000 /* init data space on demand, from inode */ 100 #define SSEQL 0x010000 /* user warned of sequential vm behavior */ 101 #define SUANOM 0x020000 /* user warned of random vm behavior */ 102 #define STIMO 0x040000 /* timing out during sleep */ 103 /* was SDETACH */ 104 #define SNUSIG 0x100000 /* using new signal mechanism */ 105 #define SOWEUPC 0x200000 /* owe process an addupc() call at next ast */ 106 #define SSEL 0x400000 /* selecting; wakeup/waiting danger */ 107 108 /* 109 * parallel proc structure 110 * to replace part with times 111 * to be passed to parent process 112 * in ZOMBIE state. 113 * 114 * THIS SHOULD BE DONE WITH A union() CONSTRUCTION 115 */ 116 struct xproc 117 { 118 struct proc *xp_link; 119 struct proc *xp_rlink; 120 struct pte *xp_addr; 121 char xp_usrpri; 122 char xp_pri; /* priority, negative is high */ 123 char xp_cpu; /* cpu usage for scheduling */ 124 char xp_stat; 125 char xp_time; /* resident time for scheduling */ 126 char xp_nice; /* nice for cpu usage */ 127 char xp_slptime; 128 char p_cursig; 129 int xp_sig; /* signals pending to this process */ 130 int xp_siga0; 131 int xp_siga1; 132 int xp_flag; 133 short xp_uid; /* user id, used to direct tty signals */ 134 short xp_pgrp; /* name of process group leader */ 135 short xp_pid; /* unique process id */ 136 short xp_ppid; /* process id of parent */ 137 short xp_xstat; /* Exit status for wait */ 138 struct vtimes xp_vm; 139 }; 140