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b79f4fa9 DF |
1 | /* |
2 | * Copyright (c) 1980 Regents of the University of California. | |
094e80ed | 3 | * All rights reserved. The Berkeley Software License Agreement |
b79f4fa9 DF |
4 | * specifies the terms and conditions for redistribution. |
5 | * | |
094e80ed | 6 | * @(#)proc.h 5.2 (Berkeley) %G% |
b79f4fa9 | 7 | */ |
0b076053 BJ |
8 | |
9 | /* | |
10 | * C shell - process structure declarations | |
11 | */ | |
12 | ||
13 | /* | |
14 | * Structure for each process the shell knows about: | |
15 | * allocated and filled by pcreate. | |
16 | * flushed by pflush; freeing always happens at top level | |
17 | * so the interrupt level has less to worry about. | |
18 | * processes are related to "friends" when in a pipeline; | |
19 | * p_friends links makes a circular list of such jobs | |
20 | */ | |
21 | struct process { | |
22 | struct process *p_next; /* next in global "proclist" */ | |
23 | struct process *p_friends; /* next in job list (or self) */ | |
24 | struct directory *p_cwd; /* cwd of the job (only in head) */ | |
25 | short unsigned p_flags; /* various job status flags */ | |
26 | char p_reason; /* reason for entering this state */ | |
27 | char p_index; /* shorthand job index */ | |
cc519405 SL |
28 | int p_pid; |
29 | int p_jobid; /* pid of job leader */ | |
0b076053 | 30 | /* if a job is stopped/background p_jobid gives its pgrp */ |
ae3d9709 SL |
31 | struct timeval p_btime; /* begin time */ |
32 | struct timeval p_etime; /* end time */ | |
ea775389 | 33 | struct rusage p_rusage; |
0b076053 BJ |
34 | char *p_command; /* first PMAXLEN chars of command */ |
35 | }; | |
36 | ||
37 | /* flag values for p_flags */ | |
38 | #define PRUNNING (1<<0) /* running */ | |
39 | #define PSTOPPED (1<<1) /* stopped */ | |
40 | #define PNEXITED (1<<2) /* normally exited */ | |
41 | #define PAEXITED (1<<3) /* abnormally exited */ | |
42 | #define PSIGNALED (1<<4) /* terminated by a signal != SIGINT */ | |
43 | ||
44 | #define PALLSTATES (PRUNNING|PSTOPPED|PNEXITED|PAEXITED|PSIGNALED|PINTERRUPTED) | |
45 | #define PNOTIFY (1<<5) /* notify async when done */ | |
46 | #define PTIME (1<<6) /* job times should be printed */ | |
47 | #define PAWAITED (1<<7) /* top level is waiting for it */ | |
48 | #define PFOREGND (1<<8) /* started in shells pgrp */ | |
49 | #define PDUMPED (1<<9) /* process dumped core */ | |
50 | #define PDIAG (1<<10) /* diagnostic output also piped out */ | |
51 | #define PPOU (1<<11) /* piped output */ | |
52 | #define PREPORTED (1<<12) /* status has been reported */ | |
53 | #define PINTERRUPTED (1<<13) /* job stopped via interrupt signal */ | |
54 | #define PPTIME (1<<14) /* time individual process */ | |
55 | #define PNEEDNOTE (1<<15) /* notify as soon as practical */ | |
56 | ||
57 | #define PNULL (struct process *)0 | |
58 | #define PMAXLEN 80 | |
59 | ||
60 | /* defines for arguments to pprint */ | |
61 | #define NUMBER 01 | |
62 | #define NAME 02 | |
63 | #define REASON 04 | |
64 | #define AMPERSAND 010 | |
65 | #define FANCY 020 | |
66 | #define SHELLDIR 040 /* print shell's dir if not the same */ | |
67 | #define JOBDIR 0100 /* print job's dir if not the same */ | |
68 | #define AREASON 0200 | |
69 | ||
70 | struct process proclist; /* list head of all processes */ | |
71 | bool pnoprocesses; /* pchild found nothing to wait for */ | |
72 | ||
73 | struct process *pholdjob; /* one level stack of current jobs */ | |
74 | ||
75 | struct process *pcurrjob; /* current job */ | |
76 | struct process *pcurrent; /* current job in table */ | |
77 | struct process *pprevious; /* previous job in table */ | |
78 | ||
79 | short pmaxindex; /* current maximum job index */ | |
80 | ||
0b076053 BJ |
81 | int psigint(); |
82 | struct process *pgetcurr(); | |
83 | struct process *plookup(); | |
84 | struct process *pfind(); |