projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 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(); |