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1.1 root 1: /* proc.h 4.1 11/9/80 */
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_cpticks; /* ticks of cpu time */
49: float p_pctcpu; /* %cpu for this process during p_time */
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: };
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