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1.1 root 1: #ifndef _LNODE_
2: #ifdef KERNEL
3: #include "../h/lnode.h"
4: #else
5: #include <sys/lnode.h>
6: #endif
7: #endif
8:
9: /*
10: * One structure allocated per active
11: * process. It contains all data needed
12: * about the process while the
13: * process may be swapped out.
14: * Other per process data (user.h)
15: * is swapped with the process.
16: */
17:
18: struct proc
19: {
20: struct proc *p_link; /* linked list of running processes */
21: struct proc *p_rlink; /* (used by hardware q instructions) */
22: struct pte *p_addr; /* u-area kernel map address */
23: char p_usrpri; /* user-priority based on p_cpu and p_nice */
24: char p_pri; /* priority, negative is high */
25: u_char p_cpu; /* cpu usage for scheduling */
26: char p_stat;
27: char p_time; /* resident time for scheduling */
28: char p_nice; /* nice for cpu usage */
29: char p_slptime; /* time since last block */
30: char p_cursig;
31: long p_sig; /* signals pending to this process */
32: long p_siga0; /* low bit of 2 bit signal action */
33: long p_siga1; /* high bit of 2 bit signal action */
34: #define p_ignsig p_siga0 /* ignored signal mask */
35: int p_flag;
36: short p_uid; /* user id, used to direct tty signals */
37: short p_pgrp; /* name of process group leader */
38: short p_pid; /* unique process id */
39: short p_ppid; /* process id of parent */
40: KL_p p_lnode; /* per-user scheduling */
41: float p_sharepri; /* priority based on p_nice and p_lnode->kl.l_usage */
42: short p_poip; /* count of page outs in progress */
43: short p_szpt; /* copy of page table size */
44: size_t p_tsize; /* size of text (clicks) */
45: size_t p_dsize; /* size of data space (clicks) */
46: size_t p_ssize; /* copy of stack size (clicks) */
47: size_t p_rssize; /* current resident set size in clicks */
48: size_t p_maxrss; /* copy of u.u_limit[MAXRSS] */
49: size_t p_swrss; /* resident set size before last swap */
50: swblk_t p_swaddr; /* disk address of u area when swapped */
51: caddr_t p_wchan; /* event process is awaiting */
52: struct text *p_textp; /* pointer to text structure */
53: u_short p_clktim; /* time to alarm clock signal */
54: u_short p_tsleep; /* time to tsleep */
55: struct pte *p_p0br; /* page table base P0BR */
56: struct proc *p_xlink; /* linked list of procs sharing same text */
57: short p_cpticks; /* ticks of cpu time */
58: float p_pctcpu; /* %cpu for this process during p_time */
59: short p_ndx; /* proc index for memall (because of vfork) */
60: short p_idhash; /* hashed based on p_pid for kill+exit+... */
61: struct proc *p_pptr; /* pointer to process structure of parent */
62: struct inode *p_trace; /* inode for new process tracing stuff */
63: };
64:
65: #define PIDHSZ 63
66: #define PIDHASH(pid) ((pid) % PIDHSZ)
67:
68: #ifdef KERNEL
69: short pidhash[PIDHSZ];
70:
71: struct proc *pfind();
72: #endif
73:
74: #ifdef KERNEL
75: struct proc *proc, *procNPROC; /* the proc table itself */
76: int nproc;
77:
78: #define NQS 32 /* 32 run queues */
79: struct prochd {
80: struct proc *ph_link; /* linked list of running processes */
81: struct proc *ph_rlink;
82: } qs[NQS];
83: int whichqs; /* bit mask summarizing non-empty qs's */
84: #endif
85:
86: /* stat codes */
87: #define SSLEEP 1 /* awaiting an event */
88: #define SWAIT 2 /* (abandoned state) */
89: #define SRUN 3 /* running */
90: #define SIDL 4 /* intermediate state in process creation */
91: #define SZOMB 5 /* intermediate state in process termination */
92: #define SSTOP 6 /* process being traced */
93:
94: /* flag codes */
95: #define SLOAD 0x00000001 /* in core */
96: #define SSYS 0x00000002 /* swapper or pager process */
97: #define SLOCK 0x00000004 /* process being swapped out */
98: #define SSWAP 0x00000008 /* save area flag */
99: #define STRC 0x00000010 /* process is being traced */
100: #define SWTED 0x00000020 /* another tracing flag */
101: #define SULOCK 0x00000040 /* user settable lock in core */
102: #define SPAGE 0x00000080 /* process in page wait state */
103: #define SKEEP 0x00000100 /* another flag to prevent swap out */
104: #define SDLYU 0x00000200 /* delayed unlock of pages */
105: #define SWEXIT 0x00000400 /* working on exiting */
106: #define SPHYSIO 0x00000800 /* doing physical i/o (bio.c) */
107: #define SVFORK 0x00001000 /* process resulted from vfork() */
108: #define SVFDONE 0x00002000 /* another vfork flag */
109: #define SNOVM 0x00004000 /* no vm, parent in a vfork() */
110: #define SPAGI 0x00008000 /* init data space on demand, from inode */
111: #define SSEQL 0x00010000 /* user warned of sequential vm behavior */
112: #define SUANOM 0x00020000 /* user warned of random vm behavior */
113: #define STIMO 0x00040000 /* timing out during sleep */
114: #define SDETACH 0x00080000 /* detached inherited by init */
115: #define SNUSIG 0x00100000 /* using new signal mechanism */
116: #define SOWEUPC 0x00200000 /* owe process an addupc() call at next ast */
117: #define SSEL 0x00400000 /* selecting: wakeup/waiting danger */
118: #define SPROCTR 0x00800000 /* tracing via /proc */
119: #define SPROCIO 0x01000000 /* doing I/O via /proc, so don't swap */
120: #define SSEXEC 0x02000000 /* stop on exec */
121: #define SPROCWT 0x04000000 /* wanted by /proc after SPAGE */
122:
123: #define PTRACED(p) ((p)->p_trace || ((p)->p_flag&(STRC|SPROCTR|SSEXEC)))
124:
125: /*
126: * parallel proc structure
127: * to replace part with times
128: * to be passed to parent process
129: * in ZOMBIE state.
130: *
131: * THIS SHOULD BE DONE WITH A union() CONSTRUCTION
132: */
133: struct xproc
134: {
135: struct proc *xp_link;
136: struct proc *xp_rlink;
137: struct pte *xp_addr;
138: char xp_usrpri; /* user-priority based on p_cpu and p_nice */
139: char xp_pri; /* priority, negative is high */
140: char xp_cpu; /* cpu usage for scheduling */
141: char xp_stat;
142: char xp_time; /* resident time for scheduling */
143: char xp_nice; /* nice for cpu usage */
144: char xp_slptime;
145: char xp_cursig;
146: long xp_sig; /* signals pending to this process */
147: long xp_siga0;
148: long xp_siga1;
149: int xp_flag;
150: short xp_uid; /* user id, used to direct tty signals */
151: short xp_pgrp; /* name of process group leader */
152: short xp_pid; /* unique process id */
153: short xp_ppid; /* process id of parent */
154: KL_p xp_lnode; /* per-user scheduling */
155: float xp_sharepri; /* priority based on p_nice and p_lnode->kl.l_usage */
156: short xp_xstat; /* Exit status for wait */
157: struct vtimes xp_vm;
158: };
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